Science topic

Catalyst Synthesis - Science topic

Explore the latest questions and answers in Catalyst Synthesis, and find Catalyst Synthesis experts.
Questions related to Catalyst Synthesis
  • asked a question related to Catalyst Synthesis
Question
2 answers
For example, Cu/Zn/Al catalyst. 0.1M, NaOH soIution use for pH maintain. Desired pH achived without completing this NaOH solution. I wonder about rest of this solution is wastage?
Relevant answer
Answer
Yuxi Xu I really appreciate you clearing up the confusion.
  • asked a question related to Catalyst Synthesis
Question
6 answers
I am looking for the oil for oil bath application.
My target temperature is 300 C so, I found this oil
PX0045-3 in the Sigma Aldrich, but I am not sure I can use it for oil bath application.
Can I use this? or if you have an available oil for the high temperature application, please let me know!
Silicon is can be used below 250 C I think.
Relevant answer
You will be able to control the temperature precisely, if a heating coil connected to a Variac (Dimmerstat) is wound around the reaction flask. By varying the voltage the temperature can be maintained at 300C similar to an oil bath.
  • asked a question related to Catalyst Synthesis
Question
1 answer
Special ZSM-5 catalyst (synthesis and technical data) for converting C4+ olefines to light olefines.
Relevant answer
Answer
I would like to suggest you two publications. I hope you will find date for your research.
  • asked a question related to Catalyst Synthesis
Question
7 answers
I am confused between the meaning of loaded and supported catalysts. Are these two terms same or different?
Please clarify my doubt.
Relevant answer
Answer
  • asked a question related to Catalyst Synthesis
Question
4 answers
I was wondering if anyone can share their experience regarding the calculation of required Salt and water(solvent) to prepare mixed metal oxide catalysts through the Co-precipitation method. For instance, CeZrO2 of 90:10 Ce/Zr molar ratio using Ce(NO3)3·6H2O and Zr(NO3)4·5H2O salts.
I typically start the calculations knowing the molar ratio of active components and the total weight of the catalyst
I suppose there are better approaches, for instance, calculating the required salts and solvents without having a specific weight of the end catalysts product in mind
  • asked a question related to Catalyst Synthesis
Question
20 answers
I would like to make some modifications of my flavonoids for the sake to enhance the pharmaological activity.
Is it possible and practical ? And what kind of reagents will be more convenient?
Any suggestions or articles will be more valuable.
Thank you,
Relevant answer
Answer
Dear Alexander Sinko many thanks for sharing this very interesting technical question with the RG community. Flavonoids normally have several –OH groups at different positions, so that a variety of fluorinated derivatives are possible. There are some literature references available in which the authors describe the use of elemental fluorine (diluted with nitrogen) as fluorinating agent. However, most organic chemistry laboratories are not properly equipped for woorking with elemental fluorine.
An alternative synthetic route involves the synthesis of fluorinated flavonoids starting from fluorinated benzene derivatives. For more information, please have a look at the following potentially useful articles:
Synthesis and anti-rhinovirus properties of fluoro-substituted flavonoids
and
Separation of Quercetin’s Biological Activity from Its Oxidative Property through Bioisosteric Replacement of the Catecholic Hydroxyl Groups with Fluorine Atoms
The first article is freely available as public full text from the internet (please see the attached pdf file). The second article has not been posted as public full text on RG. However, one of the authors has an RG pprofile (https://www.researchgate.net/profile/Suh-Cho-2). Thus you can easily contact him directly via RG and request the full text.
I also came across a Master thesis which could provide useful information about this topic:
Synthesis of Fluoroflavones as Potential Neuroprotective Agents
(also attached)
Good luck with your research and best wishes, Frank Edelmann
P.S. Please also share this question with the "flavonoid guru" Yasser Fakri Mustafa
  • asked a question related to Catalyst Synthesis
Question
5 answers
Please suggest a method to determine this practically. Please avoid mentioning the publications having the final results. The guidelines or procedure for measurement is required. Any related discussion or fruitful comments are warmly welcomed.
Relevant answer
Answer
It can be calculated from UV data of photocatalyst as well as DRS data of photocatalyst. While using UV data Tauce's equation is used. While in other case kubelka munk equation is ised
  • asked a question related to Catalyst Synthesis
Question
11 answers
Microsoft excel sheet required.
Relevant answer
  • asked a question related to Catalyst Synthesis
Question
3 answers
I would like to know which is a better approach,
Doing catalyst synthesis and characterization, performance testing of catalysts and then doing the kinetic and mechanistic study OR studying the reaction mechanistic via software tools like DFT before carrying out the catalyst synthesis and performance testing? I am asking the question in context with the steam reforming reaction over Ni-based bimetallic catalyst.
Thanks
Relevant answer
Answer
Dear Steve,
You may choose either of the technique.
However, doing a DFT study, in the beginning, will save the material and may help in the prediction of the reaction mechanisms.
Whereas, carrying out the kinetic and mechanistic study of the catalyst supported by XRD, XPS, and DRIFT studies will help in the prediction of the actual reaction mechanism taking place for your catalyst system.
  • asked a question related to Catalyst Synthesis
Question
2 answers
Yang Li, Yu X, Li H, et al. Detailed kinetic modeling of homogeneous H2S-CH4 oxidation under ultra rich condition for H-2 production[J]. Applied Energy, 2017, 208: 905–919.
In this document of preparing CS2 by thermal catalytic conversion of CH4 and H2S, the product will be forced air-cooled by quartz tube after coming out of the reactor to convert S from gaseous state to solid state. Will CS2 also change from gas to liquid? Can you continue to enter GC to detect the output?
Relevant answer
Answer
Dear Jundao Wu I assume that the carbon disulfide formed during the reaction will stay gaseous under the given reaction conditions. It will then be identified together with the other gases present in the mixture. Did you check the Supplementary Material provided with the article? It contains some useful details about the gas chromatography configuration. For your information please find attached a pdf file. Good luck with your experiments and best wishes!
  • asked a question related to Catalyst Synthesis
Question
8 answers
I am trying to impregnate 10wt%Cu-10 wt%Fe on alumina pellets (1/8" in diameter, Alfa Aesar). The procedure I am following right now is mixing the alumina pellets and metal nitrate solutions (copper nitrate and iron (III) nitrate) with a weight of support to the volume of deionised water ratio of 1:5. The solution+support is mixed using a rotavapor for 3 hours and then the pellets are filtered out . Obviously, the filtration method will not ensure the required Cu-Fe loading on the alumina pellets. The problem is that when I mix and rotate the solution+pellets, the color of the solution changes from green to brown (I suspect some reaction of alumina with the metal nitrates). I tried to evaporating the metal precursor solution after impregnation using the rotavapor at 60°C of the water bath temperature (instead of the filtration step), but it led to the deposition of brown residue on the alumina pellets. What suggestions you will have to have an effective impregnation?
Relevant answer
Answer
Based on my experience, when Cu is introduced by the wet impregnation, the solvent elimination using filtration is not sufficient for some supports. However, the rotary evaporator might be used instead. I have also observed the change in color, however, it did not affect the properties of the calcined catalyst.
  • asked a question related to Catalyst Synthesis
Question
4 answers
I am trying to make hard pellets of a NiO powder for Van Der Pauw conductivity measurements. Although I have a small steel iron pellet press (1.5cm diameter) and I go as high as 15,000.00 PSI, the pellets disintegrate as soon as I apply even a small pressure on them. I can't use a binder because it would change electronic conductivity, and I tried adding drops of ethanol or heating to 75 degrees °C but no luck. Any advice? 
Relevant answer
Answer
you have to use binder solution and make dow out of it,,then extrude it in a extruder. Further, it must be dried and calcined.
  • asked a question related to Catalyst Synthesis
Question
4 answers
Could an electronegative support act as an electron sink to facilitate the oxidation of low-valence metal ions to higher valences?
If it could then Does electronegative support affect the catalyst efficiency in chemical water oxidation process?
Relevant answer
Answer
Dear Chinnaraja Eswaran I checked that link but It doesn't related to my question.
  • asked a question related to Catalyst Synthesis
Question
8 answers
In the case of water splitting the water oxidation (OER) is the bottleneck for the process and because of the harsh conditions of the WO reaction, molecular catalysts with high TOFs are not stable in the matrix and quickly decompose. On the other hand heterogeneous catalysts are more stable but they often do not have high TOF quantities. Now what is your opinion about the future catalyst type? Will the ideal catalysts fabricated by turning the molecular catalysts to heterogeneous catalysts ( by loading the molecular catalysts on the solid surfaces ) or it will be from the single atom heterogeneous catalyst type?
Relevant answer
Answer
Dear Sina Safavi thank you for initiating this interesting RG discussion. Although we are inorganic chemists, I'm not an expert in this field. However, I agree with Yurii V Geletii in that there is no such thing as a true catalyst. In this context I suggest that you have a look at the following relevant article which has been published Open Access. It is stated there that future catalysts should be "low-cost and earth-abundant":
Earth-Abundant Electrocatalysts for Water Splitting: Current and Future Directions
(see attached pdf file)
  • asked a question related to Catalyst Synthesis
Question
4 answers
In your opinion, what’s the best strategy to approach the preparation of single atom site catalyst synthesis? Let’s suppose our substrate is zeolite or silica, and we want to impregnate Au/Ag on there edifice. Any suggestion will be appreciated.
Relevant answer
Answer
Dear Latif Ullah thank you for your very interesting technical question. Although I'm an inorganic chemist, I would not call myself a proven expert in this field of research. However, I found the following potentially useful reference which might help answering your question:
Single-Atom Catalysts: From Design to Application
This paper is freely available as public full text on RG. It is a review article and should provide you with a good initial overview of the field. Moreover, it contains a list of 226 references to original research articles in the field.
  • asked a question related to Catalyst Synthesis
Question
2 answers
Hello
Nitrooxy group (nitrate esters) is used in the preparation of vasodilators.
The use of silver nitrate to convert alkyl halides to nitrate esters is very common.
A. McKillop & M. E. Ford used mercury nitrate in organic media, but not repeated by someone else.
Can other nitrate salts be used to convert halides to nitrate esters?
Thanks all.
Emami, Mut orgsynth.student
Relevant answer
Answer
Hello Mr.Grice
Some good leaving groups like tosylate ,tms ,.. are good.(base on reported works)
But halids are relatively inert in some reactions .
Use of I as leaving group in allylic position is a Conventional method but problem is cost.
Nucleophilc replacement of NO3/X since Hughes & Ingold is Well known but other cations participation or catalysis is unkown...
  • asked a question related to Catalyst Synthesis
Question
10 answers
Typically xylene isomerization catalysts convert ethylbenzene (EB) to benzene. But for example, IFP's Oparsi plus catalyst convert EB to xylenes isomers.
It is a big help if anybody tells me what promoter can do this reaction.
I know hydrogenation metals like Pd can convert EB to naphthenes and acid sites of zeolite support are suitable for the conversion of naphthenes to xylene. But I think conventional catalysts have noble metals like Pd and they convert EB to benzene.
Relevant answer
Answer
The present invention relates to a method for converting a feed mixture comprising an aromatic C8 mixture of xylenes and ethylbenzene in which the para-xylene content of the xylene portion of the feed is less than equilibrium to produce a product mixture of reduced ethylbenzene content and a greater amount of para-xylene, which method comprises contacting the feed mixture at conversion conditions with a first catalyst having activity for the conversion of ethylbenzene, and with a second catalyst having activity for the isomerization of a xylene.
  • asked a question related to Catalyst Synthesis
Question
7 answers
Good-day! Some researchers mention using Hydroquinone solution as a polymerization inhibitor in acrylic acid. How this solution can be prepared ?
What is the CAS number of the starting material involved. Thank you so much !!
Relevant answer
Answer
As Professor Frank T. Edelmann has mentioned, The CAS number is 123-31-9
All the best
  • asked a question related to Catalyst Synthesis
Question
8 answers
Al incorporation into the SBA-15 structure can be done with limitations.
Upto what extent we can load Al into the SBA-15 structure, without creating an extra framework of alumina in the synthesized material?
Relevant answer
Answer
I agree with Evgeny Alexandrovich Belopukhov
  • asked a question related to Catalyst Synthesis
Question
4 answers
As you know some MOFs are flexible and the way the flexible MOF behaves toward external stimuli such as temperature, pressure can affect their diameter (e.g., breathing) and many other physical properties.
How these changes can be related to the diffusion coefficient as it depends on catalyst diameter?
Relevant answer
Answer
Dear Noor Aljammal
De diffusivity of the reactive specie depends of the solvent (nussel Difusivity) and the catalyst contribute with the effective diffusivity according the porosity and tortuosity.
Please read my article: La-, Mn-and Fe-Doped Zirconia Washcoats Deposited on Monolithic Reactors via Sol-Gel Method: Characterization and Evaluation of their Mass Transfer Phenomena and Kinetics in Trichloroethylene Combustion 2017International Journal of Chemical Reactor Engineering
15(5),20170027, where I calculated both types of diffusivities.
The heat transfer is analogous.
  • asked a question related to Catalyst Synthesis
Question
5 answers
I need to know if it's possible to do the sabatier reaction to produce methane without catalyst, and the temperature that would require. The temperature must be higher (than with catalyst) due to the higher activation energy, right?
Sabatier reaction:
CO2 + 4H2 <-> CH4 + 2H2O
Relevant answer
Answer
Hi,
Sabatier reaction is a catalytic method for conversion of CO2 to CH4 by the definition. A very wide catalytic system is available to operate this transformation. A review of the materials and their performances has been presented together with some industrial applications in the following link.
However, if you mean catalyst-free conversion of CO2 to methane gas, as far as I know, there is no feasible method for that and if there is any, it would probably need very high temperatures.
  • asked a question related to Catalyst Synthesis
Question
4 answers
I'm using GO as a catalyst to synthesis polycyclic compound.
I want to know a better way to recover Graphene Oxide from the reaction.
Relevant answer
Answer
@Jay Soni
After your reaction completion u have to centrifuged ur reaction mixture at 15000 rpm for 5 min and remove organic compounds. and wash GO by 5 times with certain solvent and take out all ur reaction mixture. Finally drie GO at 100 degree temp. for certain hr. it is ready for further use.
  • asked a question related to Catalyst Synthesis
Question
7 answers
Recently, I was synthesized Zeolites Y with the mix of Ludox and NaAlO3. Is there any literature or good tip for me to modify Zeolites Y into Ultra-stable Zeolite Y? best regards.
Relevant answer
Answer
Yes, Halima, but the question was how po prepare Ultrastable zeolite Y. For the increase the stability of Y-zeolite to the level "Ultrastable" its structure must be quite strongly dealuminated, by wery low acid concentration it can be prepared only H-form of Y-zeolite with very small dealumination, and, as you mentioned, it is necessary to calcine it very carefully to keep the crystallinity. Ultrastable Y-zeolite must by prepared by hydrothermal treatment at the temperatures above 500 °C - at this condition a hydrolysis of framework aluminumum occurs creating extra-framework Al-species (EFAL), and Al-vacancies in framework are partially replaced by Si-atoms. Then, EFAL species could be partially extracted by mineral acid - its concentration can be even higher, because after hydrothermal dealumination in e.g. deep-bed conditions at 550-750 °C the dealuminated structure of USY is strong enough to be stable against acid treatment. There are also another methods how to dealuminate the structure of Y-zeolite - slow extraction by H4EDTA-acid, but the hydrothermal steaming is the most used method for the prepartation of Ultrastable Y-zeolite. Method you propose is suitable for H-form of Y-zeolite preparation, but without higher stability.
  • asked a question related to Catalyst Synthesis
Question
7 answers
Hello everybody
I measured BET surface area and Electrochemically active surface area (EASA) of synthesized MnO2 nanomaterial. EASA was obtained by using Cyclic voltammetry at different scan rates (considering slope (Cdl) by plotting current (mA) vs. scan rates (mV/s)). the slope was obtained to be 0.0487 mF. Here, the carbon clothes (1 cm2) was used as a substrate for MnO2 nanomaterial, and considered Cs = 0.02 mF/cm2. EASA calculated from Cdl/Cs. The mass loading of the MnO2 on carbon cloth was about 0.00036 g/cm2.
1- First question is that "considering Cs=0.02 mF/cm2 as specific capacitance of an atomically smooth carbon meterials" is correct?
2- Second question is that : The BET surface area of MnO2 was obtained to be 17.5 m2/g. But EASA was obtained to be 0.0487 mF (slope), 2.435 cm2 (from Cdl/Cs), and 0.68 m2/g. Why there is high difference between obtained BET surface area (17.5 m2/g) and EASA (0.68 m2/g). Is there somethings wrong with the EASA result or it is correct?
I will be thankful if you could help me regarding two above questions.
Thank you
Relevant answer
Answer
Your measurements are what one would expect. BET will probe the entire surface area available to N2 gas (at - 196C) - ~ 14 Angstroms2 and this includes the meso- and macropores. Your active surface area will be much smaller than this.
Always believe what a calibrated/verified instrument delivers.
  • asked a question related to Catalyst Synthesis
Question
2 answers
I use a commercial Vulcan carbon as a support for multimetallic nanparticle catalyst. I notice in the EDS spectrum a peak of Si and another of S. I tend to think these are impurities in the carbon precusor itself and wonder what possible ways to clean the carbon from such impurities especially the sulphur which may poison the catalyst.
Relevant answer
Answer
Thank you, I have tried washing the carbon powder with water, acetone and ethanol followed by vacuum oven drying hoping these will screen out the impurities but they still exist.
  • asked a question related to Catalyst Synthesis
Question
8 answers
I am using Surfactants i.e CTAB, P-123 and F-127 in meso-structured materials synthesis. After synthesis i want to remove these surfacrtants by washing the materials with boiling EtOH for 6h. Is such kind of washing will be enough to remove surfactants because in my case calcination is not suitable for the as synthesized materials. So only washing will be enough to remove CTAB, P-123, F-127? kindly share your kind suggestions.
Relevant answer
Answer
In my experience, it is difficult to absolutely remove ionic CTAB by hot EtOH. Because of good solubility of CTAB in water, I think hot water could be chosen. For removal of P-123 and F-127, my senior have ever used refluxing EthOH in Soxhlet extractor.
  • asked a question related to Catalyst Synthesis
Question
23 answers
Kindly explain the major differences between the concept of catalyst inhibitors and catalyst poisons with suitable examples.
Thanks a lot.
Relevant answer
Answer
Miroslaw,
I think of fouling as a blockages that cause maldistribution. A burn will sometimes remove a blockage (e.g. if it is coke blocking a pore) but sometimes it will not and dumping and reloading catalyst is often necessary, especially if he blockage is caused by scale/metals instead of hydocarbons.
Coking/carbon disposition is the most common way for commercial Hydrotreating, Catalytic Cracking and Hydrocracking catalyst to lose actiity. Historically these catalyst were :regenerated" with a burn but recently the trend has been to dump catalyst and send it to an offsite regeneration facitity for screnning and coke burning. Arsenic and lead are posons that will permanently deactivate most catalyst and cause them to be unregenerable via burn.
I think of an inhibitor as a material that competes with reactant for catalyst sites inhibition is reversable. If the inhibitor is removed from the feed the rate of the desired reaction will increase. An inhibitor may also increase the rate of coking. If the calayst site is coked up it will usually require a burn(with air or O2) to remove the coke. that has closed up catalysyt pores and/or blocked active sites
.
Poisoning and coking are forms of catalyst deactivation that usually require a stoppage either for regeneration or catalyst replacement.You seem to disagree with the comment it can sometimesbe removed during a regeneration (usually a burn with air or O2). I agree it is not really a "poison" if you can remove it with air/ burn.
All catalyst can be "regenerated" if you take extreme enough measures.
For my purposes - in the refining indusrty- catalyst is not regenerable if activity can not be recovered with a simple burn or other relatively minor procedures like a wash with a solvent.
However even then the active metals can be reclamed and used to make new catalyst.
  • asked a question related to Catalyst Synthesis
Question
26 answers
I want know the best method for calculating Bronsted as well as Lewis acid sites of a catalyst?
Relevant answer
You can make measurements of FTIR using adsorption of pyridine.
Parry, E.P.
An infrared study of pyridine adsorbed on acidic solids. Characterization of surface acidity
(1963) Journal of Catalysis, 2 (5), pp. 371-379
  • asked a question related to Catalyst Synthesis
Question
3 answers
I want to use this powder to impregnate it in multi walled carbon nanotubes.
Relevant answer
Answer
Electrochemical preparation of PbO2 is well-known , you can use it to get a thick plate that can be crushed into the desired particle size
  • asked a question related to Catalyst Synthesis
Question
4 answers
--
Relevant answer
Answer
Be careful with low range of 2theta. Remember that the accuracy (error) of 2theta - is strongly depends on the angle. Thus, observation of a shift at angles > 50-60 2theta is more accurate and right. Just compare, if any shift is found in parallel to low angle-distortion. Please, see the attachment.
Mrs. Luma M. Ahmed,
A "red shift" is a non-relevant term in XRD - it is about the spectroscopy.
  • asked a question related to Catalyst Synthesis
Question
1 answer
I am getting dibenzylidene acetone with my product on doing separation by column. I do column at 1 to 2 % ethyl acetate /hexane. Any suggestion to remove dibenzylidene acetone
Relevant answer
Answer
You might try a different solvent system for your chromatography.  Based on how little EtOAc composition you have, I would suggest a hexane / DCM system.  I've used this solvent system for very nonpolar separations with good success.  Try testing different compositions by TLC first to see if this will work.  You should easily be able to visualize the dba impurity by a DNP stain.  Hope this helps.
  • asked a question related to Catalyst Synthesis
Question
3 answers
Acid site and metal site can affect together in the reaction condition. So, it can reduce the catalytic activity since the metal nanoparticle sites cannot survive in the presence of acidic situation. 
Relevant answer
Answer
I recommend to you, after the preparation of the catalyst to submit it to stability tests. In order to transform the unstable species or tear the active species, and after the stability tests you can prove the catalytic properties in the interest reactions.
In addition, you can determinate the catalytic species who survive to the stability tests.
  • asked a question related to Catalyst Synthesis
Question
2 answers
there are many parameters that effect to the formation of products in CO2 reduction such as catalyst, reductant.... Can you give me your opinion about this problem?. Thank you so much!
Relevant answer
Answer
Hi Hai Hoang Truong
The product selectivity of CO2 photoreductions generally depends on the type of metal co-catalyst you put on the surface of your photocatalyst (most photocatalysts generally have poor activities for CO2 photoreduction in the absence of a co-catalyst).
As a rule of thumb, for CO2 photoreduction in aqueous media, Ag and Au co-catalysts will yield CO, and Cu, Pt and Ni co-catalysts will yield CH4. This selectivity pattern results from the very weak adsorption energies of CO on Ag and Au, meaning CO desorbs before it can be hydrogenated to CH4. The band edges of the photocatalyst and the reaction conditions also influence the product distribution of CO2 photoreduction.
I suggest that you consult the primary literature around the particular photocatalyst system(s) your are working on, and use that information as a framework for predicting the products of your photoreductions.
Best regards
Geoff
  • asked a question related to Catalyst Synthesis
Question
10 answers
Dear Research Partners, How are you all so far? I have some questions for you please: Can a coffee husk based activated carbon be used for de colorization or de-pigmentation of herbal extracts in liquid form?....Is the process of preparing activated carbon from coffee husk an expensive process? Is there any paper or patent you know on the preparation of activated carbon from coffee husk for the same de pigmentation purpose? Hoping to hear from you ... Thanks very much
Relevant answer
Answer
Activated carbon is a versatile adsorbent, hence, it can be used for decolorization purpose. Generally, preparation of AC is inexpensive, therefore it is one of the most used adsorbent for removal of different pollutants. However, the choice of your activation source may play a major role in terms of cost effectiveness. Here, is a simple procedure for obtaining activated carbon. First dry the husk, put it in a close contained n carbonized in an muffel furnace at 800 degree Celsius for 2-3 hours (you may vary the temperature of your choice from 400-1000 as per your requirement), ground the carbon into a fine powder (you can use planetary ball mill to obtain fine uniform particle size). After, which you can activate the carbon either with oxidizing or reducing agent. For instance, if you are using Nitric acid as your activating agent, then added the fine carbon powder (10-15 g) in a beaker, and add 0.01 M Nitric acid solution into the beaker slowly until the carbon is fully submerged and stirred it for 2 hours. Filter, wash with DW to remove excess of acid and dry the product, keep it in an air container for further analysis.  
  • asked a question related to Catalyst Synthesis
Question
5 answers
How to convert neutral alumina to acidic alumina to be used as catalyst for Selective monoesterification of dicarboxylic acids.
Relevant answer
Answer
There is no acidic aluminum oxide. Aluminum oxide has amphoteric properties. It reacts with both acids and bases. Selective monoestherification of dicarboxylic acids should be done in an alkaline medium. Then the alumina will exhibit acidic properties.
  • asked a question related to Catalyst Synthesis
Question
4 answers
Zeolite Preparation(for basic compounds like Silica)
Relevant answer
Answer
yes you can do the kinetric study of zeolites , by changing the conditions of molar ratio of Si/Al; the concentration of template , the concentration of sodium, the sources of the  reagents , the temperature , the duration , ect )  , this kinetic will be followed by XDR analysis  each time ( you have to estimate the timing , may  be  each two hours , or each day ect 
  • asked a question related to Catalyst Synthesis
Question
3 answers
The reaction is CO methanation(i.e CO + 3H2 = CH4 + H2O). Since the input gases are CO2 and H2 at the surface of catalyst, the rate of former reaction is zero. As CO2 methanation and Reverse water-gas shift occurs along the radius of catalyst towards the center CO, H2O and CH4 are formed which will initiate the CO methanation reaction which was initially zero at the surface of the catalyst.
Relevant answer
Answer
Dear Pratheek,
Example –1Turnover Frequency in Fischer–Tropsch Synthesis
CO   +  3H = 2 CH 4 +     H 2 O
The Fischer–Tropsch synthesis was studied using a commercial 0.5 wt % Ru on  -Al 2 O 3 . The catalyst dispersion percentage of atoms exposed, determined fromhydrogen chemisorption, was found to be 49%.At a pressure of 988 kPa and a tem-perature of 475 K, a turnover frequency, , of 0.044 s  l  was reported for methane.What is the rate of formation of methane, , in mol/s  g of catalyst (metal plus sup-port)?
See this file
  • asked a question related to Catalyst Synthesis
Question
9 answers
In hydrogenation process of phenylacetylene over Pd/C catalyst, when we calculate TON and TOF, we need to calculate the active site in the Pd/C catalyst.
Relevant answer
Answer
Hi Hussein Al-Wadhaf,
You can determine the number of active site of deposited metals by H2-pulse chemisorption measurements, and their strength by further H2-TPD analysis; both analysis can be performed in sequence. Although H2 is the most applied probe, it can be replaced by other probe molecules such as CO and NO. The choice of which probe to use depends on the adsorption mechanism, I know that the use of H2 to determine active sites on nobel metals like Ru and Os works well. However I believe that CO is a better probe molecule for Pd. I did a quick check and it seems that H2 embrittle Pd. I have included here links that might help in your studies.
Best Regards,
Alexandre.
  • asked a question related to Catalyst Synthesis
Question
5 answers
Usually before hydrogenation phenylacetylene using a supported catalyst, catalyst purged with hydrogen at a certain time and temperature after that add phenylacetylene.
Relevant answer
Answer
About this question i found this article
  • asked a question related to Catalyst Synthesis
Question
4 answers
From the characterization analyses, it was found that the addition of the new functional group to the adsorbent decreased the rigidity of the material itself. However, the modified adsorbent are still giving the best performance during the regeneration and reusability study? Could anyone elaborate the findings, giving some theoretical evidence?
Relevant answer
Answer
The decrease in rigidity while maintaining the performance (or higher performance) may have been due to variations in the pore structure, in particular the increase in the porosity of the adsorbent particle and increase in specific surface.
Regards,
  • asked a question related to Catalyst Synthesis
Question
3 answers
possible reaction mechanism?
Relevant answer
Answer
There are different reactive sides in the two reactions
the it is difficult to precise the reactions products
But I think that they can produce 1,2,3-triazoe and thiazolone respectively 
  • asked a question related to Catalyst Synthesis
Question
1 answer
Siliceous zeolites or with low Si/Al are synthesized with easily, however, high Al-containing zeolite synthesis end up with mixed phases of amorphous silica-alumina with desired zeolite. Please suggest me some literature. 
Relevant answer
Answer
 The pH of the reaction mixture should be maintained at a value of 10 or 11 to stabilize the zeolite precursors formed and avoid going to polymerization
  • asked a question related to Catalyst Synthesis
Question
4 answers
I want to convert phenol into cyclohexane via hydrodeoxygenation process. Most literatures suggest to use bifunctional HZSM-5 (acid catalyst) supported Pd catalyst (metal catalyst). However, I want to replace HZSM-5 with other material. I guess natural zeolite can be used to replace HZSM-5. However, I also have to consider the Bronsted acidity and porosity of natural zeolite. How can I tune those properties of natural zeolite? Reference will be very helpful.
Relevant answer
Answer
One of the advantages of Zeolites is the turnability of the pore structure. As Afol mentioned, the first step is to de-aluminate to increase the silica/alumina ratio. That will also enhance the acidity, porosity as well as surface area. You can check my article on zeolite modification "Synthesis and application of hierarchical mesoporous HZSM-5 for biodiesel production from shea butter"; de-alumination of kaolin "Synthesis of hierarchical nanoporous HY zeolites from activated kaolin, a central composite design optimization study", "Synthesis and characterization of hierarchical nanoporous HY zeolites from acid‐activated kaolin", "Kaolinite properties and advances for solid acid and basic catalyst synthesis" and "Synthesis and characterization of sulfated hierarchical nanoporous Faujasite zeolite for efficient transesterification of shea butter". The article titled "Insight into catalyst deactivation mechanism and suppression techniques in thermocatalytic deoxygenation of bio-oil over zeolites". Kaolin is a mineral clay with almost the same components as raw zeolites. 
  • asked a question related to Catalyst Synthesis
Question
2 answers
Be able to synthesize M1 phase of MoVTeNb catalyst. Later, I'm planning to synthesis M1 phase of MoVTeNb catalyst supported on Silica.  
Relevant answer
Answer
Thank you Tariq Aqeel
  • asked a question related to Catalyst Synthesis
Question
2 answers
I have no prior knowledge of synthesizing Hematite but now I need to make it.
Complete synthesis process of Hematite by any simple method is desired.
Relevant answer
Answer
A simple hydrothermal process for fabrication of hematite (α-Fe2O3) nanostructures with narrow size distribution was developed by using PVP as surfactant and NaAc as precipitation agent. 
The present study is to synthesize iron oxide nanoparticles on different polysaccharide templates calcined at controlled temperature
Best regards.
  • asked a question related to Catalyst Synthesis
Question
6 answers
Carbon formed on the catalyst used for dry reforming. From the attached SEM image can I know the type of carbon. Thank you
  • asked a question related to Catalyst Synthesis
Question
6 answers
Hai, I am working with catalysis using metal nanoparticles (check my publication for details). Currently, I am studying the reduction of methyl orange using gold nanoparticles under continuous flow system. When studying the reduction kinetics, methyl orange is degrading to 90% at first but then the peak reappears after some time and the degradation is reduced to 50%. The catalyst is active. This I confirmed by washing the catalyst and reusing it for a fresh batch of methyl orange/BH solution. Can someone provide me with some insights to this problem?
Thanks
Aruni
Relevant answer
Answer
Thank you Dr. Mirgorod. I think this clears my question of complete degradation of methyl orange in presence of borohydride and gold at first and then the reduction in degradation efficiency.
  • asked a question related to Catalyst Synthesis
Question
9 answers
Hi. I need to prepare metal supported alumina catalyst for my project. I found several methods in literature which can be applied including precipitation and impregnation methods as the most important ones but I do not know the exact difference between these two methods. Can anyone tell me the differences these two methods have in basic principles? Will the metal particles load in different places using these two methods?
Relevant answer
Answer
 I highly recommend you to read this technical report (MANUAL OF METHODS AND PROCEDURES FOR CATALYST CHARACTERIZATION) by  J. HABER et a., 1995
  • asked a question related to Catalyst Synthesis
Question
3 answers
i 'm cuurently doing my reserch in waste water treatment .
Relevant answer
Answer
1 ppm means 1 mg in 1000 mL.
For 500 ppm add 500 mg (0.5 gm) of Rh5 in 1000 mL.
  • asked a question related to Catalyst Synthesis
Question
4 answers
I did not find any article on synthesis which mentions yield. 
Relevant answer
Answer
This would be a standard question for someone starting in chemistry (and thus there is no reference as it's 'obvious' to someone skilled in the art), so obviously you are not a chemist, but your information is incomplete to answer it  You do not state the form of the precursor 'cerium nitrate'.  You finish with CeO2 (cerium in the +4 oxidation state).  The most common nitrate of cerium is the hexahydrate [Ce(NO3)3.6H2O] and this is Ce in the +3 oxidation state - other nitrates are, of course, known - hydrated and unhydrated and Ce in various oxidation states.  However, this can be taken as a pertinent example.  The molecular mass of the Ce (+3) nitrate hexahydrate is 434.22. The molecular mass of CeO2 is 172.115.  So 434.22 g of the hexahydrate will lead to 172.115 g of CeO2 (100% yield). So if you start with 1 mg of the nitrate you'll end up with 172.115/434.22 mg of the oxide. This is around 0.4 mg (0.396 is more pedantic).  So the chemistry of your starting material is crucial.  You ask 'how much?'  I think in terms of nanoparticles then the question should be 'how many?'  You would need then to calculate how many NP's of say 50 nm would be produced from (say) 0.4 mg of the oxide.  This should be an easy question for you to answer with a knowledge of the density of the CeO2 and some assumption about the finished shape of particle.
  • asked a question related to Catalyst Synthesis
Question
4 answers
The reaction is in the file. which catalysts can be used for the reaction instead of NbCl5? Thank you.
Relevant answer
Answer
thanks a lot for your attentions 
  • asked a question related to Catalyst Synthesis
Question
4 answers
What is the best pH range for Pd catalytic H2O2 generation by H2 and O2?Thanks!
Relevant answer
Answer
H2Ohas acidic character. So it should be more stable in acidic medium.
  • asked a question related to Catalyst Synthesis
Question
5 answers
what is the procedure to estimate the active surface area of liquid catalysts?
Relevant answer
Answer
For such a small size centrifugal separation might be more appropriate. If you can get a clear liquid layer by filtering or centrifugation the method can be used. Centrifuge to excess has risk of removing adsorbed pure component from catalyst.
Nano filtration can go as low as 150 molecular weight.  Ultra filtration can go to about 3000 molecular weight. Microfiltration is limited at about 50,000 molecular weight.
If the pure component is a much smaller molecule than the effective catalyst size, then filtration is preferred and only a small amount of clear liquid is needed.
If catalyst and pure component are about the same size but different densities, mild centrifugation might be possible.
  • asked a question related to Catalyst Synthesis
Question
4 answers
Hi. I am synthesizing a Ag/TiO2-MCM-41 catalyst by using wet impregnation in a reflux system. I am using a AgNO3 solution as the Ag source, and I'm not sure if it is necessary to keep the solution protected from light during the synthesis, and/or also after it. Thanks in advance.
Relevant answer
Answer
Dear Tatiana Zanette,
It would be necessary depending on which method you do use to the silver reduction. If you will use a chemical method I strongly recommend protect the solution from the light. This is due tath the light reduce the Ag+ ions. I'm not an expert on your field but it is repported the use of ambiental light to reduce silver ion and coat nanoparticles (i.e. doi:10.1021/la035330m). Then you could use the light to reduce the silver ions. I would expect different reaction rates and mechanism of nanoparticles coating or formation if you will use a chemical and thermal reduction or if you will use ambient or even monochromatic light.
So it is an important factor to take in account on any synthesis. When in our lab we use silver salts to synthesis we always protect the reactives (silver salts) and reaction solution from the light. I hope this information would be useful. Regards.
Juan
  • asked a question related to Catalyst Synthesis
Question
10 answers
Note that, I have calcined my catalyst at 800 oC based on TGA result which became stable, with no weight loss after 800 oC.
The reaction temperature is 900 oC
Relevant answer
Answer
Yes it is better to calcine the catalyst material at higher temperature than the catalytic reaction temperature as catalytic activity would be affected for following reasons.
1) Sintering reduces the surface area of catalyst.
2) Phase change/Phase segregation can result at higher temperature.
3) Reduction in amount of lattice/surface oxygen can occur with increase in temperature.
4) Increase in availability of lower oxidation states of metals at surface can occur due to decrease in lattice oxygen.
So for stable and durable catalyst it is important i feel.
  • asked a question related to Catalyst Synthesis
Question
2 answers
We synthesized ZnO/ZrO2 catalyst in different content but we used same method which chemical precipitation. surprisingly all composites exhibites different morphology one of them is pencil-like other is star like etc. please help me is it possible and what is this reason?
Relevant answer
Answer
thank you very much Dr Coker. This explanation remarkably help to me. Thank you again. 
  • asked a question related to Catalyst Synthesis
Question
3 answers
What happen if I evaporate solvent at the same temperature which equal to rotary evaporator.
 
Is rotary evaporator under pressure reduction necessary?
Relevant answer
Answer
thank you very much
  • asked a question related to Catalyst Synthesis
Question
3 answers
Due to the lack of data on the electrical properties of zeolite 3A, data available for zeolite A was used.
Relevant answer
Answer
Dear Saeed Golmohamadi, 
I suggest to read the following papers.In case you need the full papers  you can request.
Best regards.
  • asked a question related to Catalyst Synthesis
Question
12 answers
catalyst synthesis 
Relevant answer
Answer
Hi
I think firstly, you need to prepare a good surface area, large pore volume and highly acidic alumina support. Please find the attached paper that discuss the preparation of different phases of alumina
Best regards
  • asked a question related to Catalyst Synthesis
Question
7 answers
What I have read from some publications is that gamma-alumina can be synthesized from aluminium hydroxide through Boehmite formation as an intermediate compound. Is there any direct method to synthesize this compound?
Relevant answer
Answer
Hi
I think the attached paper is a good one to differentiate between different phases of alumina
Thaks
  • asked a question related to Catalyst Synthesis
Question
7 answers
So we can conclude that the catalyst has basic sites that relate to Bronsted Basic and Lewis Basic sites, or acidic sites that relate to Bronsted Acidic and Lewis Acidic sites.
Relevant answer
Answer
Hi
you can use DRIFTS-Pyridine to distinguish between different acidic sites as Bronsted or Lewis and TPD-CO2 for basic sites
Have a very good day
  • asked a question related to Catalyst Synthesis
Question
6 answers
I have synthesized a catalyst and I am applying it in catalysing biomass pyrolysis reaction to obtain bio-oil. The catalyst shows best performance when it is used at a concentration of 7% giving the maximum amount of bio-oil. We do not see any further increase in the amount of bio-oil even after increasing the catalyst concentration beyond 7%. Why is it so?
Relevant answer
Answer
Many homogeneous catalysts decompose by pathways that involve multiple catalytic centers coming together. Whether it is formation of a stable off-cycle dimer, disproportionation, comproportionation, or aggregation/precipitation, these reactions will be 2nd order or higher in catalyst, while the desired reaction is usually 1st order in catalyst. Therefore, there is a catalyst concentration above which the reaction will suffer.
Another possibility is that there is a byproduct of catalyst activation that can interfere with the reaction. I once ran a reaction using a Pd2dba3 precatalyst where the displaced dba caused problems if I used too much...
  • asked a question related to Catalyst Synthesis
Question
6 answers
The acid value for my west cooking oil is 18.4 .So can I use base catalyst for biodiesel?
or can I use catalyst with 2 function acid and base ?
Relevant answer
Answer
you have to subject your oil with high FFA to acid esterification prior base transesterification  to avoid soap formation
  • asked a question related to Catalyst Synthesis
Question
5 answers
I want to increase the crystallinity of a water-insoluble phosphate by use of an autoclave.
In literature the phosphate/water dispersion was kept at 180 °C for one week. Cooling rate was not mentioned.
I wonder if it makes sense to slowly cool down the autoclave or if holding at high temperature is the important step.
I could find out by experiment, but that will take a long time, so any experience would be quite helpful.
Relevant answer
Answer
It depends too much on the system, as sometimes the crystallization occurs on cooling down a solution (cooling down makes the solution become supersaturated), but in solvothermal synthesis anything can happen and I've seen with my eyes crystals growing during heating. 
If your phosphate gets dissolved at 180°C it makes sense to cool down slowly, because new nucleation has to occur and you want only few nuclei, and to grow them slowly.
But if they keep it for 1 week I suppose it stays as a suspension therefore you're trying to improve the crystals you already have, growing them bigger at the expenses of the small ones and/or more ordered.... in this case the cooling rate matters less I think.
Just for fun put 2 autoclaves in the oven, program for slow cooling, but take 1 out after the heating time...
DISCLAIMER: I have no experience with what you're trying to do, I just found the question interesting and sharing my thoughts. I might as well be wrong.
  • asked a question related to Catalyst Synthesis
Question
5 answers
From CO pulse titration, dispersion of Pt particles, volume of CO adsorbed, diameter of particles and metal surface area are found. I need the value to find the CO coverage on Pt/SBA-15.
Relevant answer
Answer
I am not 100% sure about your question. But I can provide some information. As I understand, CO pulse titration can only do "surface" Pt, not bulk Pt. If you'd like to know total (bulk) numbers of Pt, ICP and AAS would work. If you just want to estimate this value, you can calculate your Pt dispersion first, then use a curve ( G. Ertl, H., Handbook of Heterogeneous Catalysis, pp740-741) to roughly obtain your total Pt numbers.
  • asked a question related to Catalyst Synthesis
Question
6 answers
Why when I increase the doping metal the TPD-NH3 show increasing in acidity then show me decrease at high consecration of the metal?
I am using Ce doped with activated carbon when I increas the  consecration of Ce the acidity was increase then Show me decrease is there any explanation for this phenomena 
thanks
Relevant answer
Answer
By the way, I have noticed that you used activated carbon (AC) as support. You'd better check the acidity of AC first.
  • asked a question related to Catalyst Synthesis
Question
2 answers
After catalytic preparation of NVP through dehydration reaction, the product smells a bad odor. This also occurs for NMP production and the odor is like a dead fish odor! how to deodorize these products?
Thank you in advance for your help.
Relevant answer
Answer
 Dear Rafik,
Thank you for your answer. In the presence of activated carbon, NVP would hydrolyze into pyrrolidone and acetaldehyde and so the purity decreases ultimately. I think the ppm impurities are amine type!
I would appreciate if anyone could help me. Thank you.
  • asked a question related to Catalyst Synthesis
Question
3 answers
I am working on heterogeneous catalysis and i want to dope magnesium (Mg) on catalyst support can it be effective? if yes then can i use Magnesium hydroxide for wet impregnation method to get Mg ions on the catalyst support surface please guide me for the preparation of this catalyst.
Relevant answer
Answer
You can use both wet and dry impregnation and use of carbonate and nitrate salts are better than chloride salts.
  • asked a question related to Catalyst Synthesis
Question
3 answers
In general, reaction of NiCl2.6H2O and dppp yield Ni(dppp)Cl2; whether NiCl2.6H2O can be replaced by anhydrous NiCl2 for the same reaction?
Relevant answer
Answer
Hi - I guess you are learning to work with nickel- the answer of course is that it's quite easy. If you need any advice for coordination chemistry; the tricks the professions use then just ask, best wishes, Ian.
  • asked a question related to Catalyst Synthesis
Question
4 answers
Any papers comparing activity, metal-support interactions and dispersion of the catalysts prepared by these varying methods?
Relevant answer
Answer
 Thanks very much for the assistance.
  • asked a question related to Catalyst Synthesis
Question
5 answers
there are many methods for synthesis of catalysts such as nitrate, co-precipitation, .... is the change of the synthesis method for an oxide affect and change it's band gap?
Relevant answer
Answer
If a significant amount of dopants are introduced into the oxide during synthesis, it will create doping state, even doping band in the gap, which usually reduced the band gap of oxide. 
  • asked a question related to Catalyst Synthesis
Question
2 answers
I have commercially available weakly acidic alumina provided by SIgma ALdrich. Can I use it instead of gamma alumina for catalyst loading? 
Relevant answer
Answer
Yes you can, if the acidity and the surface area are the same, as I think both of them should be mesoporous . It also depend on the reaction 
if you want more information about the phases of alumina, you can find it in this article
  • asked a question related to Catalyst Synthesis
Question
10 answers
Dear all,
I want to prepare metal oxide catalyst, which is CaO-ZnO/Al2O3.
So, which the best method for that; is it co-precipitation method or incipient wetness method? or you can suggest another method.
Thank you so much in advance.
Relevant answer
Answer
Efficient catalysts can be prepared by impregnation of alumina with Ca and Znsalts and further calcination, if low percentages of calcium and zinc are used. See for example
Particuology Volume 8, Issue 3, June 2010, Pages 225–230
  • asked a question related to Catalyst Synthesis
Question
23 answers
Of course, colorless molecules are better choices for photocatalytic activity test, but I mean if we are still interested in using dyes because of simple, low-cost protocol for determining their concentration spectrophotometrically. As it is known, many dyes show hypo/bathochromically shifted absorption peaks after degradation test, possibly due to the presence of degradation products. 
Relevant answer
Answer
Dear Hanggara,
To the contrary, a study entitled " Is Methylene Blue An Appropriate Substrate for A Photocatalytic Activity Test? A Study with Visible-Light Responsive Titania" revealed the following: 
An analysis of decomposition of methylene blue (MB) in an aerated aqueous solution by its action spectrum has shown that sulfur-doped titania (S–TiO₂) has activity under visible-light irradiation and that the decomposition mechanism depends on the excitation wavelength. This suggests that photosensitive materials are not suitable as probe chemicals for photocatalytic activity tests, especially those for evaluation of activity under visible light. It is confirmed using acetic acid instead of MB that S–TiO₂, but not ordinary non-doped titania, leads to the photocatalytic reaction under visible radiation below 600 nm, which corresponds to its absorption spectrum.
4. Conclusion
The results indicate that there are two significant problems in the photocatalytic
activity test. One is the inadequacy of MB as a probe molecule for semiconductor
photocatalysis, since the photoinduced reaction by MB photoabsorption may mislead into  believing that a given semiconductor material has visible-light photocatalytic activity. Dyes other than MB [35] should also be examined for their suitability as a probe molecule. The other problem is the photoirradiation systems for the activity test. As above, action spectrum analyses enable us to discriminate the origin of photoresponse by checking the wavelength
dependence. However, when the samples are irradiated in MB solutions, for example, with a set of optical cut-off filters that transmit light of a wavelength longer than a given wavelength, as customarily employed, the results cannot be a proof of visible-light sensitizing ability, i.e., real photocatalytic activity.
In summary, the use of transparent substrates in the region of working wavelengths is strongly recommended, if at all possible, in a photocatalytic activity test for photocatalysts and for action spectrum analysis. By using the preferred test system, the present S-TiO2 has been proved really photoactive in the visible region, at least for the decomposition of AcOH into CO2. However, the present finding does not guarantee the visible-light activity for other frequently-used substrates such as acetone or toluene, which need careful individual examination.
For more details, see attached paper.
Hoping this will be helpful,
Rafik
  • asked a question related to Catalyst Synthesis
Question
20 answers
I wanna use Deposition Precipitation Method to load metal on the support. For example, I need 10%Metal loading on the support. Kindly guide me, in Deposition Precipitation Method, is it possible to have theoretical metal loading equal to actual metal loading?
Relevant answer
Answer
The following steps is to estimate the weight of metal in compound:
1- Calculate moles of Co(NO3)2.6H2O= Wt. of Co(NO3)2.6H2O/Mwt. of Co(NO3)2.6H2O.
2- 1 mole of Cobalt(II) Nitrate Hexahydrate = 1 mole of Cobalt.
3- Number of moles in step one = number of moles of Co metal
4- weight of Co metal = step 3 * Mwt. of Co.
Now, you should follow the same steps with your support to estimate the weight of its metal.
After that, Wt.% = [step 4 / (Step 4 + Wt. of support metal)] * 100
Hopefully, my answer will be useful.
Cheers
  • asked a question related to Catalyst Synthesis
Question
3 answers
I have to use FeCl3 as a catalyst for synthesis guanidine group from NH2 and CN group, but after this step I need to remove Fe from the reaction with HCl. Since my product is polar, I can not use aqueous HCl. also I tried with HCl 2M.Et2O, It is work but still I am losing a part my product and the yield is not good. Could you guide me to solve this problem?    Thank you so much
Relevant answer
Answer
you may use a solid absorbant containing SH  group to remove FeCl3 from the liquid reaction system.
  • asked a question related to Catalyst Synthesis
Question
3 answers
MoVTeNb, Bronsted-Lewis acid site during propane oxidation to acrylic acid
Relevant answer
Answer
First of all, please edit your write up properly before posting it.
Also use capital letter while mentioning the names of scientists. Here you are talking about Brønsted–Lowry or Lewis, just check these things. Do not mix them up.
  • asked a question related to Catalyst Synthesis
Question
3 answers
The usual pH of the starting gel for the synthesis of phosphate-based materials such as aluminophosphates and SAPOs is slightly acidic to slightly alkaline (typically, starting pH = 4-8). Why this pH condition favors the synthesis of SAPO catalysts? And why is this condition different for aluminosilicate zeolites? I would be grateful if someone could explain it to me from the molecular point of view.
Relevant answer
Answer
Dear Mohadese,
you have asked me in a different discussion regarding the synthesis of zeolites/SAPOs and I think it is better to answer here (in terms of clarity).
Unfortunately I do not have much experience with the synthesis zeolites and other porous materials. I have done all my experiments with commercial material. My whole synthesis knowledge is based on the common textbooks and papers written about these topics.
Perhaps these papers could help you.