A5007919320- Catalysis for Biomass Conversion
- Biofuel production and bioconversion
- Chemical Synthesis and Reactions
- Mesoporous Materials and Catalysis
- Ultrasound and Cavitation Phenomena
- Carbohydrate Chemistry and Synthesis
- Enzyme Catalysis and Immobilization
- Advanced Cellulose Research Studies
- Catalysis and Hydrodesulfurization Studies
- Carbon dioxide utilization in catalysis
- Ionic liquids properties and applications
- Asymmetric Hydrogenation and Catalysis
- Lignin and Wood Chemistry
- Catalytic Processes in Materials Science
- Porphyrin and Phthalocyanine Chemistry
- Metal-Catalyzed Oxygenation Mechanisms
- biodegradable polymer synthesis and properties
- Innovative Microfluidic and Catalytic Techniques Innovation
- Polyoxometalates: Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Multicomponent Synthesis of Heterocycles
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Microbial Metabolites in Food Biotechnology
- Crystallization and Solubility Studies
Institut de Chimie des Milieux et des Matériaux de Poitiers
2016-2025
Université de Poitiers
2016-2025
Institut de Chimie
2016-2025
Centre National de la Recherche Scientifique
2016-2025
CEA LITEN
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2024
Université Grenoble Alpes
2024
Solvay (Belgium)
2020
The Salvation Army China
2017-2019
Fédération française de cardiologie
2018
Glycerol, an organic waste generated by the biodiesel industry, has been recently proposed as a valuable green solvent. This review summarizes advantages, disadvantages and potential uses of glycerol solvent for catalysis, synthesis, separations materials chemistry. In particular, through selected examples we show here that may combine advantages water (low toxicity, low price, large availability, renewability) ionic liquids (high boiling point, vapour pressure, solubility in scCO2). More...
Abstract Since their introduction in 2004, deep eutectic solvents (DESs) have attracted interest different fields of chemistry. In the case biomass, DESs are particularly interesting, not only because low cost and biodegradability, but also due to unique property interact with hydrogen‐bond donors such as renewably sourced polyols or carboxylic acids. Through selected examples, we report contribution for dissolution extraction/purification bioderived chemicals, conversion carbohydrates...
Abstract The hydrogenation of furfural to furfuryl alcohol was performed in the presence a Co/SBA‐15 catalyst. High selectivity (96 %) at conversion higher than 95 % is reported over this catalytic system. As occurs metallic Co sites, effect reduction temperature, H 2 pressure, and reaction temperature were studied. Optimum conditions were: 150 °C, 1.5 h, 2.0 MPa . catalyst recyclable, recovered with purity 90 %. solvent concentration also With minimum 50 wt solvent, remained high (both 80...
This review describes the rapid evolution of chemistry in context a sustainable development our society. Written collaboration between scientists from different horizons, either public organizations or chemical companies, we aim here at providing recommendations to accelerate emergence eco-designed products on market.
To investigate metal oxide surface catalysis, determining an appropriate Hubbard U-correction term is a challenge for the density functional theory (DFT) community and identifying realistic reaction intermediates their corresponding X-ray photoelectron spectroscopy (XPS) shifts experimental researchers, when these methods are used independently. In this study, using CuO as model transition oxide, we demonstrate that DFT XPS applied synergistically, determination of U value identification...
A new generation of cheap and sustainable choline-derived ionic solvents is reported. These are capable rapidly dissolving decrystallizing microcrystalline cellulose (MCC) in only a few minutes, thus offering an eco-efficient alternative to the traditional use imidazolium-based liquids (see scheme). Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please...
We show here that betaine hydrochloride (BHC), a co-product of the carbohydrate industry, can be used for design cheap and safe media capable promoting dehydration fructose inulin to HMF. In particular, in these BHC-based media, HMF was obtained with up 84% yield, thus offering competitive route traditional imidazolium-based ionic liquids.
Glycerol was oxidized selectively to oxalic and tartronic acids in 78% yield over a highly crystalline CuO catalyst prepared within few minutes by sonochemical synthesis.
Here we report an effective cooperation between Pd/C and Amberlyst-15 for the catalytic conversion of fructose inulin to 5-hydroxymethyl-2,5-hexanedione in a one-pot process.
We report here, and rationalize, a synergistic effect between non-noble metal oxide catalyst (CuO) high-frequency ultrasound (HFUS) on glucose oxidation. While CuO HFUS are able to independently oxidize gluconic acid, the combination of with led dramatic change reaction selectivity, glucuronic acid being formed as major product. By means density functional theory (DFT) calculations, we show that, under ultrasonic irradiation water at 550 kHz, surface lattice oxygen traps H· radicals stemming...
The selective transformation of furfural to 1,4-pentanediol has been achieved with up 90% yield in a CO<sub>2</sub>/H<sub>2</sub>/H<sub>2</sub>O system over Ru catalytic species supported on mesoporous carbon.
Abstract We report the synthesis of biomass‐derived functionalized aromatic chemicals from furfural, a building block nowadays available in large scale low‐cost biomass. The scientific strategy relies on Diels–Alder/aromatization sequence. By controlling rate each step, it was possible to produce exclusively meta isomer. In particular, through this route, we describe renewably sourced ‐xylylenediamine (MXD). Transposition work other furfural‐derived is also discussed and reveals that...
A novel Pd-based catalyst hosted over a nitrogen enriched fibrous porous-organic-polymer with high density of step sites and exhibits versatile catalytic performance different types vegetable oils to furnish long chain diesel-range alkanes.
Formaldehyde was used as a versatile C1 building block to forge either acyclic or heterocyclic molecules <italic>via</italic> multicomponent reactions with the potential be more sustainable than lengthier alternatives.
We demonstrate a catalytic base-free strategy for the selective oxidation of microcrystalline cellulose to oxalic acid (OA) by combining low frequency ultrasound as an unconventional activation technique and Au/Fe 2 O 3 catalyst.
Direct etherification of glycerol with alkyl alcohols, olefins and dibenzyl ethers was successfully catalyzed by acid functionalized silica, allowing the first catalytic access to valuable monoalkyl glyceryl ethers.
Abstract Whereas the beneficial effect of water on reaction rate is decreased with an increase reactant′s hydrophobicity, we report here that use glycerol as solvent was able to considerably accelerate organic even starting from more hydrophobic substrates than those usually used water. Moreover, possibility directly using crude generated by biodiesel industry economically and environmentally improves interest solvent.
Biomass breakdown: The reactivity of recalcitrant cellulose towards hydrolysis is enhanced by pretreatment with a nonthermal atmospheric plasma. Glucose was produced in up to 25 wt % yield from microcrystalline and α-cellulose (see picture). This technology also applicable the deconstruction starch inulin.
In this paper, we show that ultrasound technology is a powerful tool for enhancing the reactivity of microcrystalline cellulose (MCC) in presence solid acid catalyst. The effects sonication on MCC structure were studied using different characterization methods. particular found pretreatment by ultrasounds resulted drastic decrease particle size (<0.4 μm), leading to better interaction with catalyst surfaces. As result, subsequent hydrolysis sonicated over recyclable sulfonated carbon was be...