Questions related to Catalyst
I am trying to prepare a Ni-based catalyst(Ni/Ce2O3) by co-precipitation method. I was wondering what is the best precipitation agent and PH.
I am looking for examples where markets have developed mainly through public procurement as a consumer rather than via policy making.
can we use the ANN-GA optimisation algorithm to optimize chemical reactions?
if yes minimum how much data is required?
currently, I am working with a catalytic process I want to optimize the performance of the catalyst corresponding to the process parameters. previous research papers used from 32 to 48 process data. is it enough to predict and optimize the process parameters?
Please help me reg..this
If I want to doping Co in NiFe2O4 with 3 wt%,
For example, Fe(NO3)3.9H2O (1 g), Ni(NO3)2.6H2O (1 g) and Co(NO3)2·6H2O (3wt%). So, 2 g x 3/100 = 0.06 g of Co(NO3)2·6H2O. The result will be (0.97 g for Fe(NO3)3.9H2O and Ni(NO3)2.6H2O) and (0.06 for Co(NO3)2·6H2O), With the appropriate solvent.
Please, Let me know if I’m wrong and correct me.
thank you in advance.
For HER reaction for a halide based photocatalyst I get the different results of hydrogen after all repeated result even experimental conditions are same.
CALL FOR CHAPTERS
The Evolution of Artificial Intelligence in Higher Education: Challenges, Risks, and Ethical Considerations
Editors: Miltiadis D. Lytras, Afnan Alkhaldi, Sawsan Malik
Publisher: Emerald Publishing
Emerald Studies in Active and Transformative Learning in Higher Education,
Scope, Strategy and Topics Covered
This volume serves as a reference edition for the challenges, opportunities, risks and adoption of Artificial Intelligence in all aspects of Higher Education. With emphasis on the diverse facets of the AI, namely procedural, methodological, technical and ethical this book covers in a holistic way the evolution of the AI in Higher Education. Case Studies, Lessons Learnt and Research and Development Projects of the utilization of AI in Higher Education are also covered promoting the debate on the future of AI in Higher Education
The aim of this volume is to cover the excessive needs of faculty, administrators, policy makers and stakeholders in the Higher Education industry on timely and trusted knowledge on the impact of the Artificial Intelligence in the Higher Education Institutions and Ecosystem. Our volume is one of the first efforts to accommodate in a single volume the diverse aspects of the phenomenon with a constructive, progressive approach aiming to investigate the positive footprint of the application of the AI in the HE.
The selected structure of our volume is also representative of our own unique strategy. The following are the sections that will host the chapters:
- Section 1. AI as a Catalyst for the Higher Education Ecosystem and Value proposition
- Section 2. Threats, Opportunities, Challenges and Risks on the Adoption of AI in HE
- Section 3. A new era of AI-enabled instructional and learning strategic, engagement and interactivity in Higher Education
- Section 4. Enrichment of Learning Experience and Social Impact through AI in Higher Education
- Section 5. Administrative and Ethical issues: Managing AI as a core function of Higher Education Process
- Section 6. ChatGPT, Generative AI, OpenAI special focus: Hype, Functional and Strategic Perspectives on its use on HE institutions.
In this book, there is an integrated coverage of significant items in the relevant agenda providing a unique value proposition for the relevant area. The following list is indicative and not exhaustive.
- AI as a catalyst for the Higher Education Ecosystem
- AI as an enabler of Digital Transformation in Higher Education: Threats, Promises, implementation strategies and intended impact
- AI as an innovative approach to next generation instructional methods and learning strategies?
- The context of Disrupting Education: How Artificial Intelligence revolutionizes the higher education landscape
- Deployment of Artificial Intelligence in the value chain of the Higher Education.
- The role of the AI in the implementation of Active Learning in STEAM courses in Higher Education
- Promoting interactivity, inclusion and engagement in Higher Education
- Enhancing interactive learning experiences and student engagement through ChatGPT, Generative AI, OpenAI
- The role of ChatGPT, Generative AI, OpenAI in Revolutionizing Lifelong Learning in Higher Education
- Innovative methodological frameworks for the integration of AI in Higher Education
- Ethical issues on the use of AI in Higher Education
- Using ChatGPT, Generative and Open AI in teaching HE courses
- Enhanced Decision Making in Higher Education Administration with Artificial Intelligence
- Technology Literacy and adoption of AI and ChatGPT, Generative AI, OpenAI in Higher Education
- Adopting ChatGPT, Generative AI, OpenAI for designing training modules for HE Courses
- ChatGPT, Generative AI, OpenAI in Higher Education: Hype or a new pillar of developing next generation skills to students
This edition can serve as a reference edition as well as a teaching book for postgraduate studies on the relevant domain.
- 25th November, 2023; Submission of Abstracts (Use the Emerald Template attached)
- 15th February, 2024, Submission of Full Chapters
- 15th March, 2024, Final chapters due (review comments incorporated)
- November 2024, Publication
- There is no charge for contributing authors
- Emerald Publishing is offering complementary ebook for all contributors
- The volume is Scopus Indexed (typically 3-5 months after publication)
Editors (send your abstract to any of them)
Miltiadis D. Lytras, Effat University, Saudi Arabia, firstname.lastname@example.org
Afnan Alkhaldi, Arab Open University, Kuwait Branch, Kuwait, email@example.com
Sawsan Malik, Arab Open University, Kuwait Branch, Kuwait, firstname.lastname@example.org
The photodegradation experiment materials included RhB, catalyst (catalyst does not include carbon or carbon compounds), crystallizing dish, and magnetic stirrer. After 2 hours of irradiation, the RhB is decolorized by the catalyst, and the RhB dye color changes from pink to transparent (do not observe any pink on the catalyst). The mixture included Catalyst and RhB centrifuged for 10 min to remove the catalyst. The irradiated RhB and not irradiated RhB were filled into glass vials for TOC analysis. However, the results could not be accepted. The not irradiated RhB TOC concentration is large than the TOC of irradiated RhB. Wondering if any professor could give suggestions or comments.
What I am doing recently is to load bismuth oxybromide on foam nickel. The hydrothermal method is adopted. After hydrothermal treatment, foam nickel is dried in an 80 degree oven to degrade rhodamine. During the degradation process, catalyst particles will fall off. How can I make the catalyst load more firmly.
JAS Google AI BARD LLM (Cut & Paste)
Is SPRT real? Can it be mass produced for a given purpose?
View other drafts
SPRT, or Self-Propagating Room Temperature Synthesis, is a real process that has been demonstrated in laboratory settings. It is a method of manufacturing materials at room temperature by using a chemical reaction to generate heat. The heat then propagates through the material, causing it to synthesize.
SPRT has the potential to be mass-produced for a given purpose. However, there are still some challenges that need to be addressed before it can be commercialized. One challenge is that SPRT reactions can be difficult to control, and there is a risk of explosions. Another challenge is that SPRT reactions can produce harmful byproducts.
Researchers are working on addressing these challenges, and there has been significant progress in recent years. For example, researchers have developed new SPRT catalysts that make the reactions more controllable and less likely to explode. They have also developed methods for capturing and disposing of harmful byproducts.
It is likely that SPRT will be mass-produced for commercial purposes in the next few years. However, it is difficult to say exactly when this will happen, as it depends on the progress that is made in addressing the remaining challenges.
Here are some potential applications for mass-produced SPRT:
- Manufacturing materials for batteries, solar cells, and other electronic devices
- Producing catalysts for chemical reactions
- Creating new materials for aerospace and automotive applications
- Developing new medical implants and drug delivery systems
Overall, SPRT is a promising technology with the potential to revolutionize the way that materials are manufactured. However, there are still some challenges that need to be addressed before it can be commercialized.
The organic pollutant I chose was diethyl phlatate using MIL-125 (Ti) catalyst and irradiated with a UV lamp, but the results I obtained with increasing time, the DEP concentration increased. What could be the factors that influence this?
Researchers have used different range of log abs J, depending upon what criteria? I want to calculate tafel slope of my catalyst NiS, what range should i choose ? Here my polarisation curve.
I tried to measure the EIS of my photocatalyst by using only a working electrode (my catalyst was dip dropped on FTO) and a counter electrode (Pt), but most of the times it showed a high impedance and every time l run it wasn't the same with the other trying.
Hi all, I've read hundreds of articles on the use of TiO2 as a photocatalyst to degrade Methylene Blue from water. I have also conducted my own work on this particularly via the sol-gel route as well as nano powder slurries and nano powder immobilised in PVA crosslinked with PEG. I've replicated 10 or so methods from various papers, often with completely different results than they had. Actually with failures. The one thing I did not replicate, is when they specify they used a UVC (254nm) light, I did not. I always used an 11W UVA (385nm) light (replacing the bulb often for certainty. In trying to find what my error was, I switched to a UVC light and got the same results as the authors. I then removed the catalyst and also still got the same results, with a UVC light only. Indicating Methylene Blue was being degraded via Photolysis. My results always checked on a Thermo Helios Spectrophotometer with an absorbance peak of 664. My question is, are these research articles, none of whom described running a control without the catalyst, actually achieving photocatalysis in their lab reactors? Or are they being led to believe they've succeeded due to Photolysis? Why is no-one talking about removal of Methylene Blue via 254nm UVC light? My reactor is Quartz glass with the UVC light sitting externally and the reaction occurring under stirring. I have replicated it 8 times with the same results. When I switch to 385nm only, I get no removal of MB. When I install a TiO2 catalyst, I also get no changes. Clearly my catalysts are flawed but I've asked that in another question with no real answers so far.
As GHSV, gas hourly space velocity is basically the ratio of volumes of feed gas at STP/hr to the volume of the reactor or catalyst. Can we report the GHSV based on mL*gr-1cat h−1 because it would be difficult to calculate the exact volume of a catalyst powder?
Good evening everyone
I am working on green synthesis of selenium nanoparticles from leaf extract. The research article mentions that during selenium nanoparticle synthesis, ascorbic acid should be used as a catalyst. so why there is a need to use a catalyst?., and what is the best drying method for synthesized selenium nanoparticles?
- BJH Adsorption cumulative volume of pores between 2.0000 nm and 300.0000 nm diameter: 0.067637 cm³/g
- BJH Desorption cumulative volume of pores between 2.0000 nm and 300.0000 nm diameter: 0.113131 cm³/g
From the above data, which data should be added to the manuscript?
Using Pt based and iridium based catalysts for PEM electrolyzer is quite expensive and is a biggest challenge. But what're the other technical challanges encountered using such catalysts? What're the possible ways to bring down the cost as well the rest of challanges?
Looking for potential answers pls
I am synthesizing P3HT by oxidative polymerization of 3-Hexylthiophene by using FeCl3 as catalyst. While going through the relevant literature, I came to know that polymerization has to be conducted in the inert atmosphere (N2 or Ar). But, I couldn't understand the exact reason for doing so. Can someone help me with this?
Any insights is much appreciated. Thank you!
Pt has been remarkable Hydrogen Evolution Reaction electrocatalyst in Acid which perform good even in large scale electrolysers.
While there are plenty of engineered HER catalyst reports most of them fail at reasonably high currents and long term testing. I wonder if there is any catalyst with higher intrinsic activity than Pt?
I am about to conduct a photocurrent analysis on my synthesized catalysts, but I have no idea about the appropriate potential that needs to be applied to obtain accurate photocurrent measurements.
When I am going to do HER on glassy carbon supported nanocatalyst in 1M KOH solution, catalyst has fallen. What will be the possible solution?
Hello - I've been with working with XRD and I've heard people say that increased dispersion of a metal on a support can lead to scattering away of the x-rays from the oxide lattice faces, leading to a decreased intensity of the support peaks. However, XRD is a bulk technique, and given the same metal loading, I'd don't actually see why this is true, and don't want to mention that in a paper without a reference.
Does anyone have an explanation and a reference at least for this happening, if not a reference for an explanation?
currently I am modeling the membrane reactor. hydrogen (reaction product) as a permeated substance. when modeling a packed bed reactor I use:
D= diffusion coefficient
d1=reactor diameter (to membrane line)
to calculate the effective radial diffusion coefficient in packed bed (m2/s) and the results are in accordance with experimental.
but when modeling the membrane packed bed reactor, the simulation experienced an error.
Are there any suggestions regarding the diffusion coefficient equation for permeated substances that is more suitable for me to use?
Your answer will be greatly appreciated.
What is the purpose of adding pyridine in these reactions (O.G. Backeberg and B. Staskun, J. Chem. Soc., 1962, 3961–3963),
where Raney Nickel is used as a catalyst for reducing nitriles to aldehydes in the presence of NaH2PO2 by using AcOH/H2O/pyridine as the solvent system?
Additionally, are there any suitable reagents that can replace pyridine in this reaction?
Until now, the majority of literature concerning the reaction involving Raney nickel and NaH2PO2 employs AcOH/H2O/pyridine as the solvent system.
I am recently conducting research on the use of PTFE as a catalyst binder applied to carbon paper. The catalyst I use is Platinum. When I did the OCV test on the electrode I made, the voltage produced was very low. The OCV value can only reach 0.5V and continuously decreases to 0.1 V.
My question: Is there a special stage or treatment in using PTFE as a catalyst binder? Because when I use Nafion as a catalyst binder, the OCV value is 0.9V (normal value).
Thank you for your kind attention
I want to brominate three phenyl groups in one molecule by using Fe powder as the catalyst. but I always end up in very small yield. instead, mono and dibromo product were produced. is there any tips for working on bromination reaction by using Br2 and Fe powder? thank you.
i used the deep eutectic solvent as reaction solvent, but it really thick. so i want add other solvent to reduce the thick problem, like dichloromethane. The react is esterification reaction, i don't konw that adding dichloromethane has any effect for the deep eutectic solvent and the reaction.
Many noble metal catalysts require hydrogen pretreatment for the oxidation of carbon monoxide. What is the purpose of this?
"I'm searching for a new technology to effectively reduce the accumulation of iron pentacarbonyl during methanol synthesis. This compound has negative effects on the process, mainly by poisoning the reaction catalyst. Current methods for its removal are not fully effective. I'm interested in finding a solution that can significantly lower the concentration of iron pentacarbonyl in an efficient and environmentally sustainable manner."
I need to add an acetone to a catalyst surface with the primitive orthorhombic structure and I need a help to how predict the atom positions manually (without the help of VESTA or Avogadro), can anyone please recommend a book or guide me how to do it?
Note that it is a slab and it has a vacuum space and the acetone is added to the catalyst surface in that space.
Is polymerization of low molecular weight diols with DMC catalyst possible? If so, what is the parameters we should follow? Because DMC can be activated by minimum 400 molecular weight polyols which is derived from KOH.
This topic has generated a lot discussion on the ethical implications of using language models like ChatGPT in academic settings. It drives us to consider potential biases, accuracy issues, and professionalism in academia while employing such technology. Furthermore, it encourages the investigation of alternate ways or complementary approaches that can improve academic success while resolving concerns about the incorporation of ChatGPT.
By considering the use of ChatGPT as a catalyst, and given the controversy surrounding their role, what are the potential benefits and drawbacks of introducing ChatGPT or similar language models into the academic product creation process? and does it assist the academic researcher in producing an efficient and engaging academic output, or does it cause the researcher to lose their ability to communicate ideas clearly and concisely and conveying arguments in a logical and convincing manner?
i already have a model but i am having challenges regarding the catalyst effect. If anyone can give me a guidance ?
I synthesized GO-SiO2 as a catalyst following the usual procedure; and next, I decided to halve, double, and triple the amount of TEOS that I used in the procedure of synthesis to reach different ratios of graphene oxide to SiO2 and compare their performance as a catalyst. Was this something sensible and scientifically correct? Should I mention this in my article? (I'm no chemistry expert).
Worth mentioning that increasing the amount of TEOS led to remarkably greater porosity of the final GO-SiO2 Nano-material.
Really grateful for your responses in advance.
What is the minimum pressure required for the hydrogenation reaction for the removal of oxygen in a De-Oxo reactor? The feed to the reactor is 99.7% H2 & 0.3% O2 at a temperature of 80 degC. The catalyst inside De-Oxo reactor can be Pd or Pt.
I am working on HER nanocatalysts, i have synthesized the catalyst with various temperatures. after we did BET analysis. it shows each sample has various range of size and pore volume. can we correlate this data with the electrochemical performance of the catalyst?.
Please clarify this for me....
i have this when i read this paper "Single atom alloy catalyst for SO3 decomposition: enhancement of platinum catalyst's performance by Ag atom embedding".
I am trying to compare the OER performance of different catalyst systems. I have done the CV for each. however, I can see different non-faradaic regions. should I calculate ECSA for each using its non-faradaic window or must I use the same potential window for all of the catalyst?
I am going to do a parallel experiement with and without Pd-base catalyst, and it came across a question on the catalyst with and without metal basis purity, which one should be purchased? For example, there are 98.0%, 99.9% and 99.99%, regardless of the cost. How much difference come along with the catalyst with and without metal basis purity?
BTW, our purpose is simple to see how the kinetic pattern/trends, if there is with catalyst, on with and without catalyst. Besides, if there would be significant and/or insignificant difference in the products.
Any other suggestions on ordering catalyst, with and without metal basis purity? Here it's a kind of general question.
Thank you so much for all your help and suggestions in advance.
What are the management strategies to improve the soil organic dynamics as catalyst of crop resource capture in climate smart agriculture?
I have experimented with various methodologies, but I am getting p-cresol in end instead of vanillyl alcohol. Can anyone suggest any suitable parameters?
I have synthesized a metal nanoparticle incorporated membrane catalyst. I wanted to analyze the same by HRTEM. Could anybody please suggest a method to prepare the grid for this kind of membrane sample for HRTEM analysis?
What are the methods to improve the degree of N-methylation reaction of aliphatic amines using formaldehyde formic acid as raw materials or methanol and catalyst as raw materials?
I am currently running a biomass pyrolysis process in a vertical tubular reactor made of quartz. I am looking for suggestions for a typical type of catalyst and sample holder to use. Can you provide any recommendations?
I want to know if there is any general notation regarding the surface acidic properties of spinel phase catalyst. Does acidity increase or decrease after a bimetallic catalyst's phase change (spinel)?
i am try to synthesize the schiff base compound from aniline derivatives and vanillin use ethanol as a solvent and i am try first without catalyst no precipitate form then i use glacial acetic acid also no precipitate form but when i use sodium hydroxide as catalyst the yellow -white precipitate form with deffer melting point than reactant but when i mentoring by TLC the spot appear in vanillin and the elemental analysis of C,H,N give result deffer from my product can you help me ?
I'm currently trying to polymerize PLA by ring opening bulk polymerization using Sn(Oct)2 as a catalyst and lauryl alcohol as an initiator. The best result I've got was reducing the amount of catalyst by 5.6wt% and initiator by 3.8wt%. Below are the processes of experiment.
1. Melting of D,L - Lactide at 145°C
2. Mixing D,L - Lactide, catalyst, initiator reagents by using magnetic bar at 180°C
Haven't tried nitrogen purging and other processes regarding purification of chemicals, which were used as served. If I lower the amount of catalyst and initiator, I can't see any trace of polymerization while all I get is oligomeric state of lactide. Any advices would be greatly appreciated.
Hi everyone I want to test the electrocatalytic activity (Overall potential at 10 mA/cm2 and long-term stability) of my Bifunctional electrodes in a two-electrode system which means that I have to take both anode and cathode of the same materials. I am a bit confused about the setup and how will I assemble my experimental setup (Potentiostat) to measure these parameters? Expert answers will be highly appreciated.
I have a Ru based catalysts. I know the value of moles of gas per gram of sample (12.43) and wt % of metal (0.97 %) in the sample. The stoichiometric ration is 0.5. By using following information how can I calculate the Dispersion % of Ru the metal.
I am a researcher in chemistry, in which I have to use Pd as a catalyst. In every reaction, I have to change the millimoles of the reactants. But I can't understand how to calculate the millimoles of catalyst that should be used in a reaction according to millimoles of reactants or according to millimoles of the reactant on which the catalyst is attached during the reaction mechanism.
I have engine data to calculate oxygen storage capacity of three way catalyst for lean and rich condition with varying temperature (in transient condition). I need to calculate oxygen release rate or oxygen storage rate as a function of temperature for rich and lean condition, respectively. Is there any equation for it or how do I calculate it?
Kindly, see the attach file for available experimental data with me.
we can see the obvious differences in photo-degradation efficiency and adsorption of water pollutant by changing the dopant in catalysts, especially the adsorption. I always think about what processes and reactions can be happened to this change?
How we describe the stability of the catalyst before and after the reaction?