Jose Iglesias

Jose Iglesias
King Juan Carlos University | URJC · Chemical and Energy Technology

Chemical Engineering

About

81
Publications
17,347
Reads
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3,341
Citations
Additional affiliations
September 1999 - present
King Juan Carlos University
Position
  • Professor (Associate)
September 1999 - present
Escuela Superior de Ciencias Experimentales y Tecnologia
Position
  • Professor (Associate)
Education
September 1999 - June 2005
King Juan Carlos University
Field of study
  • Ph.D. on Chemical Engineering
September 1994 - September 1999
Complutense University of Madrid
Field of study
  • Chemical Engineering

Publications

Publications (81)
Article
Full-text available
Sn-USY materials have been prepared through an optimized post-synthetic catalytic metalation procedure. These zeolites displayed, upon ion exchange with alkaline metals, an outstanding activity in the direct transformation of glucose into methyl lactate, yielding more than 70% of the starting glucose as the target product, and an overall combined r...
Article
Life cycle analysis and exergy analysis are applied to compare the production of maleic anhydride from different feedstock, both biomass‐ and petrochemical‐derived raw materials, in order to evaluate the sustainability of alternative biorefinery processes to conventional routes. The considered processes involve two options: gas and aqueous phase fu...
Article
The strong Brønsted and Lewis acid sites are active in the tandem conversion of levulinic acid into ethyl valerate. The intrinsic activity of the former is more significant and the Pd/HBEA catalyst deactivation is partially reversible by calcination.
Article
Nowadays, the computer skills acquisition by Chemical Engineering (ChE) students is based on practical uses of specialized software packages in different applications. Process optimization courses use high‐level algebraic programming languages, such as GAMS (General Algebraic Modeling System) or AMPL (A Mathematical Programming Language), which are...
Article
This study evaluates the influence of the presence of oxygenated groups created onto the surface of activated carbon (AC) on its ability to disperse platinum (Pt) or palladium (Pd) particles and on its catalytic performance to drive the transformation of glycerol into lactic acid. AC pretreatment consisted of oxidation in the presence of HNO3 aqueo...
Article
Full-text available
Polymers are ubiquitously present in our daily life because they can meet a wide range of needs and fields of applications. This success, based on an irresponsible linear consumption of plastics and the access to cheap oil, is creating serious environmental problems. Two lines of actions are needed to cope with them: to adopt a circular consumption...
Article
Full-text available
The one-pot conversion of biomass-derived platform molecules such as levulinic acid (LA) and furfural (FAL) into γ-valerolactone (GVL) is challenging because of the need for adequate multi-functional catalysts and high-pressure gaseous hydrogen. As a more sustainable alternative, here we describe the transfer hydrogenation of LA to GVL using isopro...
Article
Full-text available
Biomass, in its many forms—oils and fats, lignocellulose, algae, etc [...]
Article
Full-text available
The sustainability of glucose production from two different feedstocks, maize starch (MS) and woody biomass residues (WBR), was evaluated by means of life cycle assessment (LCA) methodology. The aim of this work was to compare the environmental performance of conventional technology (glucose from MS by enzymatic hydrolysis) with a novel alternative...
Article
Currently, much attention is being paid to the development of sustainable catalytic processes for the production of chemicals (biofuels, bioproducts, and so on) from lignocellulosic biomass. This minireview pursues to give an exhaustive overview about the heterogeneous catalytic technologies proposed for the oxidation of four key platform molecules...
Article
The direct one-pot transformation of glucose into γ-valerolactone (GVL) can be accomplished by means of a cascade of reactions in which Brønsted acid-catalyzed transformations are combined with catalytic transfer hydrogenation (CTH) by using 2-propanol as sacrificial alcohol, avoiding the use of high-pressure hydrogen. Catalysts containing Zr Lewis...
Article
Full-text available
Sorbitol production from glucose was studied through catalytic transfer hydrogenation (CTH) over Raney nickel catalysts in alcohol media, used as solvents and hydrogen donors. It was found that alcohol sugars, sorbitol and mannitol, can be derived from two hydrogen transfer pathways, one produced involving the sacrificing alcohol as a hydrogen dono...
Article
The hydrogenation of aqueous solutions of glucose into sorbitol has been tackled in the presence of ruthenium-functionalized catalysts using mesostructured pure-silica SBA-15 and ZrO2-coated SBA-15 materials as supports. The influence of the metal loading and the presence of ZrO2 in the supports on the catalytic activity of these materials have bee...
Article
The aqueous phase hydrogenation of maleic acid (MAc) to succinic acid (SAc) is demonstrated in the absence of any organic solvent and using stoichiometric amount of formic acid (FAc) as...
Article
Distillation is a very important operation for purification and separation in Chemical Engineering field. The determination of the optimal distillation sequence is key to minimize the total investment and operating cost and it can be posed as a mixed integer‐linear programming (MILP) problem. To solve them and due to the high number of variables an...
Article
Improving the environmental performance of the industrial processes for the production of biomass-derived platform molecules is nowadays mandatory to achieve real sustainable bio-refineries. In this work, the sorbitol production starting from corn starch has been evaluated using a cradle-to-gate life cycle assessment (LCA) approach. The objective i...
Article
The consumption and production of biodiesel has grown dramatically in recent decades, motivated by a strong interest in renewable energy. This has generated a surplus of its main by‐product, glycerol. Several catalytic processes have been proposed to generate alternatives for using this excess glycerol, mainly focusing on its transformation into hi...
Article
Lactic acid and ester derivatives, important precursors of a wide variety of products, can be prepared via retro-aldol sugar condensation in the presence of Sn-containing zeolites. However, the preparation of such materials, often complex and requiring zeolitic structures difficult to obtain on a commercial scale, hinders the access of this technol...
Article
The integration of GVL production in a lignocellulosic biorefinery where furfural and levulinic acid are co-produced is investigated in a one-pot process over Zr-Al-Beta bi-functional catalyst. Under the synthesis and reaction conditions previously optimized for the transformation of furfural, the yield to GVL for the different mixtures of levulini...
Article
Full-text available
Raney nickel catalysts have been tested in the transformation of glucose into sorbitol through a hydrogen transfer pathway in the presence of short chain alcohols. Comparison between different sacrificing alcohols evidenced that catalytic hydrogen transfer (CHT) was only possible from ethanol under the tested neutral conditions. Catalytic tests sho...
Article
Controlling the thickness of zirconia monolayers coated over SBA-15 offers an effective way to tune catalytic performance for the acid-mediated and hydrogen transfer (Meerwein Ponndorf Verley, MPV) cascade transformation of furfural to γ-valerolactone. Complementary mechanistic and kinetic modelling establishes the existence of the two distinct zir...
Article
The optimization of the production of γ-valerolactone (GVL) from furfural (FAL) through a cascade of transformations involving hydrogen transfer and different acid-driven reactions has been tackled by using a bifunctional Zr-Al-beta zeolite as catalyst. The study involved the simultaneous evaluation of the influence of the main reaction parameters...
Article
This article reviews the recent advances in the development of zeolite catalysts for biomass valorization processes to produce both biofuels and/or bio-based chemicals, which is an emerging and fast expanding field. The work deals with different types of feedstocks, including vegetable oils, lignocellulose and sugars, as well as with a number of re...
Article
The one-pot conversion of xylose into γ-gammavalerolactone in 2-propanol over bifunctional Zr-Al-Beta zeolites, prepared via a post-synthetic route, was optimized in terms of both catalyst synthesis and reaction conditions. In the catalyst preparation, the use of Zr(NO3)4 as zirconium source as well as the tuning of the amount of water used during...
Article
Full-text available
The catalytic performance of two types of heterogeneous acid catalysts—sulfonic acid-functionalized materials and aluminum containing zeolites,—in the dehydration of sorbitol to isosorbide, in solventless and autogenous pressure conditions, has been studied. Catalysts screening evidenced strong differences between sulfonic acid-based materials and...
Article
A series of bifunctional USY zeolite catalysts with different Al/Zr ratios were synthesised. The incorporation of Zr into the structure was accomplished after partial dealumination of H-USY. Structural and spectroscopic characterization confirmed the preservation of the zeolite network as well as the isolated incorporation of Zr atoms in Al vacanci...
Article
Full-text available
SBA-15 materials were functionalized through a post-synthetic methodology with molybdenum-Schiff bases to provide catalytic activity in epoxidation reactions. Thus, glycidoxypropyl functionalities were first attached to the surface of the mesostructured silica, followed by the reaction of the immobilized oxirane groups with 2-amino propyl pyridine....
Article
The conversion of furfuryl alcohol, a highly versatile biomass-derived platform molecule, into a large variety of bio-products, including ethers, lactones and levulinates, has been evaluated in alcohol media using different solid acid catalysts, such as commercial zeolites, sulfonic acid-functionalized materials, and sulfated zirconia. Reaction pat...
Chapter
In this chapter, we will highlight different chemical routes to convert highly functionalized sugars (glucose and xylose) coming from the hydrolysis of nonedible lignocellulosic biomass into high-energy-density biofuels with reduced oxygen content and improved H/C ratio. Firstly, this chapter will be focused on the chemical catalytic upgrading of l...
Article
Propyl sulfonic acid functionalized mesostructured SBA-15 silicas have been used to promote the dehydration of sorbitol to isosorbide, in melted phase, under atmospheric pressure. These materials were prepared with different acid capacities and modified with different types of methylsilane functionalities, looking for an enhancement of the catalyti...
Article
The one-pot conversion of xylose into GVL in 2-propanol has been achieved over bifunctional Zr- and Al-containing beta zeolite catalysts, prepared via a post-synthetic route, possessing both Brønsted and Lewis functionalities. A GVL yield of 35 mol% was obtained at 190 °C after 48 h.
Article
Different solid acid catalysts, which include several zeolites, zirconium oxide based catalysts, and materials that contain sulfonic acids, have been evaluated in the dehydration of xylose to furfural in alcohol media. Alcohol media were selected to reduce side reactions, many of which occur in aqueous media. Among the tested alcohols, 2-propanol p...
Article
The efficiency of two white-rot fungi (WRF), Trametes versicolor and Ganoderma lucidum, to eliminate thirteen pharmaceutical pollutants with concomitant biodiesel production from the accumulating lipid content after treatment, was examined. The removal efficiency was studied using both individual and combined strains. The results of individual and...
Article
The use of sulfonic acid-functionalized heterogeneous catalysts in conjunction with the use of dimethyl sulfoxide (DMSO) as co-solvent in the catalytic transformation of fructose in ethanol to produce 5-ethoxymethyl furfural (EMF) is shown as an interesting alternative route for the production of this advanced biofuel. Arenesulfonic acid-modified S...
Article
Full-text available
Zr-SBA-15 Lewis acid catalyst has demonstrated an outstanding catalytic activity in the reduction of several carbonyl compounds by means of Meerwein Ponndorf Verley (MPV) reaction, using several secondary alcohols, and showing a very high selectivity towards the desired products. Special focus was addressed in the catalytic activity of Zr-SBA-15 ma...
Article
Two different approaches have been investigated for the production of biodiesel from glycerides and free fatty acids (FFAs) extracted from sewage sludge. The first one is a two-step process consisting of organic solvent extraction followed by acid-catalyzed esterification/transesterification of the isolated oil fraction. The second one is a one-ste...
Article
Arene-SO3H-SBA-15 is shown as a remarkable catalyst for FAME production from highly acidic crude palm oil.•Arene-SO3H-SBA-15 yields high FFA contents in the final biodiesel as a consequence of hydrolysis reactions.•Several strategies have been proposed to improve its catalytic performance (increasing FAME yield and lowering FFA content).•A decreasi...
Article
Arenesulfonic-acid functionalized SBA-15 materials have been used in the production of biodiesel from low grade oleaginous feedstock. These materials display an outstanding catalytic activity, being able to promote the transformation of crude palm oil with methanol into fatty acid methyl esters with high yield (85%) under mild reaction conditions....
Article
Zirconium-containing SBA-15 materials have been used in the production of fatty acid methyl esters from low grade oleaginous feedstock. Its resistance against deactivation has been assessed by means of studying the effect of conventional impurities present in lipid wastes over the catalytic performance of this material. Alkaline metal cations like...
Article
Full-text available
Here we describe a simple route to creating conformal sulphated zirconia monolayers throughout an SBA-15 architecture that confers efficient acid-catalysed one-pot conversion of glucose to ethyl levulinate.
Article
Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydration of C-6 monosaccharides into 5-hydroxymethylfurfural (HMF) using dimethyl sulfoxide (DMSO) as solvent. Sulfonic commercial resin Amberlyst-70 was the most active catalyst, which was ascribed to its higher concentration of sulfonic acid sites as comp...
Article
Organic electrolyte solutions (OES) prepared by combination of an ionic liquid (1-Butyl-3-methylimidadozium chloride) with dimethyl sulfoxide (DMSO) have been tested as reaction media for the controlled hydrolysis of cellulose. The use of these mixtures is justified because of they provide an excellent media for the solubilization of cellulose, whi...
Article
Zr-SBA-15 material has been agglomerated with bentonite clay to form a macroscopic structured catalyst with particle sizes of 1.5 mm with the purpose of being used in the continuous production of biodiesel from waste cooking oil on a packed bed reactor. The influence of different reaction parameters was assessed including methanol to oil molar rati...
Chapter
This chapter provides an overview of the templated synthesis of porous inorganic architectures with special focus on new synthetic trends. Moreover, the specific role of these porous materials in the field of clean energy, sustainable processes, and environmental protection has been addressed.
Article
Abstract Sulfonic mesoporous silicas have demonstrated an outstanding catalytic performance in the esterification of levulinic acid with different alcohols to produce alkyl levulinates, a family of chemicals considered to be excellent oxygenated fuel extenders for gasoline, diesel and biodiesel. Catalyst screening indicated that propylsulfonic acid...
Article
Zirconium-containing periodic mesoporous organosilicas (Zr-PMOs) with varying framework organic content have been synthesized through a direct synthesis method. These materials display the excellent textural properties of the analogous inorganic solid acid Zr-SBA-15 material. However, the substitution of silica by organosilicon species provides a s...
Article
The production of biodiesel by methanolysis of highly acidic crude palm oil has been optimized for the Zr-SBA-15 heterogeneous acid catalyst. A dual optimization procedure has been carried out using surface response methodology and selecting the yield towards fatty acid methyl esters (FAMEs) as main response factor. Selected target variables for th...
Article
Full-text available
Within the present contribution we highlight the feasibility of standard refinery units for the production of biofuels from different biomass-derived feedstock. The energy densification of biomass, as well as it’s logistics and incorporation within the refinery supply chain is thoroughly discussed. Likewise, special attention is focused on the cata...
Article
Weakly acidic Zr-SBA-15 materials were synthesized by using a novel method to maximize the accessibility of zirconium sites in view of their catalytic applications. Synthesized materials at different ageing temperatures were characterized by means of several techniques such as XRD, N2 physisorption, TEM, ammonia temperature-programmed desorption, a...
Article
One of the main challenges that the biodiesel industry faces nowadays is that the production costs are still not competitive with conventional petrol fuels. Furthermore, biodiesel production is based on expensive edible biomass as raw material. In this way, innovative technologies are needed to produce biofuels from a wider range of biomass resourc...
Article
The feasibility of standard refinery units for the production of biofuels from different biomass-derived feedstocks is highlighted. Special attention is focused on the catalytic cracking and hydrotreating of triglyceride-rich biomass feedstock, probably the most suitable for co-processing in conventional refinery conversion units. Opportunities of...
Article
Different lipidic wastes and low-grade oils and fats have been characterized and evaluated as feedstocks for the acid-catalyzed production of FAME. The characterization of these materials has revealed significant contents of free fatty acids, Na, K, Ca, Mg, P, unsaponifiable matter and humidity. Arenesulfonic acid-functionalized SBA-15 silica catal...
Article
The synthesis of Zr-SBA-15 materials from zirconocene dichloride as metal precursor has been investigated. These materials can be prepared with a high loading of zirconium while preserving good mesoscopic ordering. Zr-SBA-15 materials display acid properties which have revealed to confer high catalytic activity in the transesterification of crude p...
Article
Hybrid organic–inorganic amino alcohol containing PGMA–SBA-15 materials have been prepared by first tethering poly(glycidyl methacrylate) (PGMA) chains onto the surface of SBA-15 materials using the atom transfer radical polymerization (ATRP) technique. The procedure involves the functionalization of silica-based SBA-15 materials with aminopropyl g...
Article
The synthesis of a chiral PMO SBA-15-type material from 100% purely organic monomers, 1,2-bis(triethoxysilyl)ethane and bis-silylated chiral ligands, by an easy one-pot methodology has been studied. Furthermore, these chiral periodic mesoporous solid materials with an incorporation as high as 50mol% of dimethyl tartrate-derived chiral auxiliary pre...
Article
Biodiesel production from crude palm oil containing high percentage of free fatty acids over sulfonic acid-functionalized SBA-15 materials (propyl-SO3H, arene-SO3H, perfluoro-SO3H) has been studied. The catalytic results showed that sulfonic acid-modified mesostructured materials were more active than conventional ion-exchange sulfonic resins (Ambe...
Article
The catalytic activity of different heterogeneous sulfonic acid-modified catalysts has been assayed in the simultaneous esterification of FFA and transesterification of triglycerides of crude palm oil (FFA content of 5.6wt%) with methanol, demonstrating the applicability of this kind of acid solids to the one-step production of biodiesel from FFA-c...
Article
Ti-MCM-41 materials have been prepared by co-condensation of tetraethylorthosilicate with two different titanium sources: titanocene dichloride and titanium isopropoxide. The hydrophobic nature of cyclopentadienyl rings has been used to enhance the interaction between the titanocene dichloride starting compound and the surfactant micelles leading t...
Article
The synthesis of alkenyl-SBA-15 materials has been carried out through different methodologies. The direct-synthesis method used for the functionalization of SBA-15 involving the co-condensation of the alkenyl-silicon precursor together with silicon alkoxides is clearly superior than any other post-synthetic pathway, even if acid catalysts are used...
Article
Modification of dimethyl tartrate has been investigated through transesterification with aminoalcohols to provide reactive functionalities for the covalent bonding of chiral tartrate to polyhedral oligomeric silsesquioxanes. The transesterification of dimethyl tartrate has been widely studied using different catalytic systems and reaction condition...
Article
The reduction of oil resources and the consequent increasing price of oil distillates as well as the environmental concerns of conventional fuels has renewed and increased interest on the preparation of biofuels from renewable resources. One of those interests is nowadays focused on biodiesel, which is usually prepared from crude and refined trigly...
Article
For the first time, the synthesis of Sn–zeolites starting from SiO2–SnO2 xerogels is described. The influence of several synthesis parameters in the physico–chemical properties of the xerogels and the zeolites subsequently generated has been investigated. Two different tin sources were assayed in the synthesis of xerogels (anhydrous SnCl4 and SnCl4...
Chapter
The discovery in early nineties of mesostructured silicas led to a new generation of solid materials featured by an opened architecture of ordered mesopores with very narrow pore sizes distributions. Many examples of these materials have been reported since, as the number of available structure directing agents has been expanded during the last yea...
Article
Transesterification of refined and crude vegetable oils was carried out with a sulfonic acid-modified mesostructured catalyst. This catalyst has yielded fatty acid methyl ester (FAME) purity over 95 wt % for oil conversion close to 100% under best reaction conditions (temperature 180 °C, methanol/oil molar ratio 10, and catalyst loading 6 wt % with...
Article
Organically-modified Ti-SBA-15 materials have been prepared through a direct synthesis procedure based on the co-condensation of tetraethyl orthosilicate (TEOS), alkyltriethoxysilanes (R-TES) and titanocene dichloride as silicon, organic species and titanium sources respectively. The prehydrolysis time for the TEOS and the amount and type of alkyl...
Article
Titanium-containing SBA-15 material has been agglomerated with bentonite clay to form macroscopic structured catalyst particles with the purpose of being used in continuous epoxidation processes on a fixed bed reactor. The binding conditions, the mass ratio catalyst to binding agent as well as the calcination temperature of the material were studie...
Article
The synthesis of chiral periodic mesoporous organosilicas (ChiMO) of MCM-41 type using a bis-silylated tartramide derived from l-(+)-dimethyl tartrate (Sharpless and Kagan ligand) has been studied. The ChiMO materials were characterized by powder XRD, TEM, and nitrogen adsorption–desorption measurements, verifying their successful preparation. The...
Article
Organic-inorganic mesostructured materials were functionalized with titanium by direct synthesis under strong acidic conditions using non-ionic surfactants as structure directing agent and titanocene dichloride as titanium precursor. Materials with different organic content were synthesized with a high mesoscopic order and with incorporation of tit...
Article
Molybdenum-containing SBA-15 materials have been prepared using a co-condensation method with a wide range of metal loadings under acidic conditions and using non-ionic surfactants. These materials display good catalytic activity in the epoxidation of olefins with alkyl hydroperoxides, being the catalytic activity correlated with the nature of supp...