A5087289653- Catalysis for Biomass Conversion
- Polyoxometalates: Synthesis and Applications
- Catalysis and Oxidation Reactions
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- biodegradable polymer synthesis and properties
- Chemical Synthesis and Reactions
- Microbial Metabolic Engineering and Bioproduction
- Enzyme Catalysis and Immobilization
- Carbon dioxide utilization in catalysis
- Oxidative Organic Chemistry Reactions
- Zeolite Catalysis and Synthesis
- Biofuel production and bioconversion
- Process Optimization and Integration
- Metal-Organic Frameworks: Synthesis and Applications
- Catalysts for Methane Reforming
- Biodiesel Production and Applications
- Asymmetric Hydrogenation and Catalysis
- Supercapacitor Materials and Fabrication
- Lignin and Wood Chemistry
- Extraction and Separation Processes
- Covalent Organic Framework Applications
- Edible Oils Quality and Analysis
- Minerals Flotation and Separation Techniques
Unité de catalyse et de chimie du solide de Lille
2015-2024
École Centrale de Lille
2014-2024
Université de Lille
2014-2024
Université d'Artois
2016-2024
Centre National de la Recherche Scientifique
2014-2024
Catalyse
2014-2023
École Nationale Supérieure de Chimie de Lille
2016-2019
Institut Universitaire de France
2016
University of Colorado Colorado Springs
2012-2015
Université Lille Nord de France
2010-2015
Due to its three hydroxyl groups, glycerol is a potential starting material for various high value fine chemicals such as dihydroxyacetone, tartronic acid and mesoxalic acid. The corresponding oxidation reactions are catalysed by metals palladium, platinum, bismuth or gold. Nevertheless, the selectivity not only depends on type of active phase, but also influenced numerous parameters metal particles size, pore size support pH reaction medium. This review describes recent developments in...
Catalytic dehydration of glycerol to acrolein has the potential valorise glut crude issuing from biodiesel production. This reaction requires catalysts with appropriate acidity, and intensive research activities have been focused on application families including zeolites, heteropolyacids, mixed metal oxides (oxo)-pyrophosphates, as their acidic properties are well-known. Nevertheless, deactivation by coking remains main obstacle in way large-scale industrial applications. Considering this...
Catalytic dehydration is one of the possible reactions to valorize large amounts glycerol yielding from transesterification process. Thus, since biodiesel boom in 2004–2005, many publications proposing various catalytic systems can be found. In this review, current state art based on most recent presented and discussed detail with respect observed performance as well long-term stability. Next applied development new catalysts, a main focus influence critical parameter: acidity catalyst its...
While the initial catalytic performances of silica-supported silicotungstic acid are high in glycerol dehydration reaction, they rapidly decrease with time on stream and acrolein yield quickly decreases.
The gas phase decarbonylation of lactic acid was performed over various silica-supported heteropolyacids. obtained performances were, by far, higher than those previously described in the literature. In particular, best results were for silicotungstic acid-based catalysts, which showed very high yields acetaldehyde (81–83%) at conversion (up to 91%).
The indirect ammoxidation of glycerol to acrylonitrile via intermediate formation acrolein was studied using a tandem reactor coupling dehydration step with an step. For the first acrolein, we used previously optimized WO3/TiO2 catalyst, while Sb-V-O or Sb-Fe-O catalysts were developed and for subsequent Especially, found highly selective thus more-deeply investigated. corresponding characterized by nitrogen physisorption, X-ray powder diffraction, thermogravimetric analysis, photoelectron...
The selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF) was studied over vanadium phosphate oxide (VPO)-based heterogeneous catalysts in the liquid phase. selectivity DFF highly increased when using intercalated oxides under mild conditions (1 atm oxygen, 110 °C) an aromatic solvent. We found that length ammonium alkyl chain had no clear influence on catalytic performances, and a maximum yield 83% could be achieved C14VOPO4 C14VOHPO4 after 6 h reaction....
The catalytic dehydration of 1,3<italic>-</italic>butanediol into butadiene was investigated over various aluminosilicates with different SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios and pore architectures.
Abstract The dehydration reaction of glycerol to acrolein is catalyzed by acid catalysts. These catalysts tend suffer from the formation carbonaceous species on their surface (coking), which leads substantial degradation performances (deactivation). To regenerate as‐deactivated catalysts, various techniques have been proposed so far, such as co‐feeding oxygen, continuous regeneration using a moving catalytic bed, or alternating between and regeneration. Herein, we study supported...
Abstract The deoxydehydration (DODH) of glycerol was studied using several Re‐based catalysts in the liquid phase under atmospheric pressure conditions. best performance observed over 10 wt.% ReOx/Al2O3 with 2‐hexanol as a reductive agent giving allyl alcohol an exceptional yield 91%. reaction confirmed to be catalysed heterogeneously, since stopped upon removal catalyst by hot filtration. corresponding further successfully reused three times without any leaching rhenium species, shown...
Abstract The dehydration of lactic acid to produce acrylic is a renewable alternative the mostly used production from propene. In this review, recent developments and state art for are presented critically commented. most publications on topic discussed inetail with respect observed catalysts process performance data. Among different developed, three main groups can be distinguished: zeolites, sulphates, phosphates. latter, especially hydroxyapatites, have recently attracted attention...
Biomass valorization is a booming field. Especially, the of platform molecules by catalytic processes has driven large interest in recent years, and many groups are actively working on transformation biosourced substrates to variety upgraded chemicals. In this context, present paper we put perspectives scientific works our research team. We first classified transformations industrial according number carbons starting material, from C1 C6. They involve, among others, acid catalysts (e.g., for...
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTGlycerol-Derived Renewable Polyglycerols: A Class of Versatile Chemicals Wide Potential ApplicationRosaria Ciriminna†, Benjamin Katryniok‡§, Sébastien Paul‡§, Franck Dumeignil*§∥⊥, and Mario Pagliaro*†View Author Information† Istituto per lo Studio dei Materiali Nanostrutturati, CNR, via U. La Malfa 153, 90146 Palermo, Italy‡ Unité de Catalyse et Chimie du Solide, UCCS UMR CNRS 8181, F-59650, Villeneuve d'Ascq, France§ Ecole Centrale Lille, ECLille,...
A series of mixed Keggin-type heteropolysalts Csx(NH4)3−xHPMo11VO40 with various ammonia/caesium ratios was prepared by the precipitation method and characterized TGA, N2 adsorption/desorption, XRD, FT-IR, NH3-TPD techniques. Correlations between ratio specific surface area, as well total number acid sites, were established. Furthermore, introduction Cs to catalytic formulation beneficial stabilization Keggin structure helped limiting elimination V atoms from primary structure. The...
Abstract A Pd/CeO 2 catalyst with a prominent reversible H storage capacity revealed high activity and selectivity in the direct amination of benzyl alcohol aniline ammonia via borrowing hydrogen mechanism.
Abstract SBA‐15 catalysts doped with variable aluminum amounts were prepared through a facile evaporation‐induced self‐assembly process. The textural properties and acidity of the could be tuned simply by varying content. genesis acid sites weak medium strength during reaction was directly correlated to catalytic activity for dehydration 1,3‐butanediol into butadiene (BD). best performance achieved over an Al‐SBA‐15 sample silica/alumina ratio 76, exhibiting stable BD yield 59 % at...
One of the most interesting intermediates for chemical industry is acrylic acid, which can be derived from lactic acid by catalytic dehydration in gas phase. The realization this reaction complex due to a strong thermal activation leading formation undesired by-products (acetaldehyde, propanoic acid…) as well polymerization. We studied over hydroxyapatites modified substitution hydroxyl groups fluoride. This notably enabled increasing selectivity while reducing acetaldehyde. Introduction...