Ifp Energies Nouvelles

Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Marc Jacquin

Damien Delcroix

Rejane Dastillung

Nuno Pacheco

Beatrice Fischer

Margarita Dorato

Sophie Drozdz

Pierre-Antoine Bouillon

Sophie Couderc

Raphael Huyghe

Damien Leinekugel Le Cocq

Claire Rannoux

Myriam Souleymanou

Celine Hognon

Romain Richard

Justine Denis

Frederic Augier

Ludovic Raynal

Julien Grandjean

Caroline Aymard

Alain Methivier

Amandine Cabiac

Etienne Girard

Thierry Huard

Nicolas Cadran

Adrien Gomez

Claire Fauvarque-Nuytten

Claire Fauvarque Nuytien

Emilie Brule

Céline Hognon

The present invention relates to a process for treating a lignocellulosic biomass pretreated beforehand (), said process comprising the extraction of the free sugars from said pretreated biomass using an alcoholic or aqueous-alcoholic extraction solution (), so as to obtain a liquid phase enriched in free sugars, called liquor (), and a solid phase depleted in free sugars, called must ().

Process for treating lignocellulosic biomass

The invention relates to a process for synthesizing 5-hydroxymethylfurfural from a fructose-containing feedstock in the presence of at least one aprotic polar solvent and at least one dehydration catalyst, in which process the maximum instantaneous fructose concentration 5.0 wt %.

Process for synthesizing 5-hydroxymethylfurfural

The invention relates to a process for converting a feedstock comprising at least one sugar into 5-hydroxymethylfurfural, wherein said feed is brought into contact with one or more inorganic dehydration catalysts and one or more chloride sources in the presence of at least one aprotic polar solvent alone or as a mixture, at a temperature of between 30&#xb0; C. and 200&#xb0; C., and at a pressure of between 0.1 MPa and 10 MPa.

Process for producing 5-hydroxymethylfurfural in the presence of an inorganic dehydration and a chloride source

The invention relates to a novel process for converting a feedstock comprising at least one sugar into 5-hydroxymethylfurfural, wherein said feedstock is brought into contact with one or more organic dehydration catalysts and one or more chloride sources in the presence of at least one aprotic polar solvent alone or as a mixture, at a temperature of between 30&#xb0; C. and 200&#xb0; C., and at a pressure of between 0.1 MPa and 10 MPa.

Process for producing 5-hydroxymethylfurfural in the presence of an organic dehydration catalyst and a chloride source

The invention relates to a process for separating furanic compounds from a feedstock additionally containing dimethoxysulfoxide (DMSO). These furanic compounds are in particular 5-hydroxymethylfurfural (5-HMF), 2,5-diformylfuran (DFF), 2,5-furanedicarboxylic acid (FDCA) or dimethyl 2,5-furandicarboxylate (DMFDCA). The process successively comprises a) bringing the feedstock into contact with water originating from step c), then b) a liquid-liquid extraction with an organic solvent followed by a back extraction c) by the water added in order to obtain an organic extract rich in furanic compounds. The extract may then be subjected to a crystallization step d) and then a filtration in order to obtain the solid furanic compound. The water-rich or solvent-rich effluents are advantageously recycled respectively to the back extraction and the extraction.

Process for separating furanic compounds, in particular 5-hydroxymethylfurfural, from dimethoxysulfoxide by liquid-liquid extractions

The invention relates to a method for producing butadiene that is fed with a butanediol feedstock, with said method comprising at least:

Method for producing and purifying 1,3-butadiene

The invention relates to a method for producing 1,3-butanediene from a butanediol feedstock that includes:

Method for producing butadiene from butanediols

The invention relates to a process for the production of 5-hydroxymethylfurfural from a feedstock comprising at least one sugar using a combination of at least one catalyst selected from the homogeneous Lewis acids, the heterogeneous Lewis acids and the heterogeneous bases and at least one homogeneous Br&#xf8;nsted acid catalyst selected from the families of the thioureas, the sulphonic acids and the phosphorus-containing organic compounds, alone or in a mixture, in the presence of at least one aprotic polar solvent, at a temperature comprised between 30&#xb0; C. and 300&#xb0; C., and at a pressure comprised between 0.1 MPa and 10 MPa.

Method for producing 5-hydroxymethylfurfural in the presence of a Lewis acid catalyst and/or a heterogeneous base catalyst and a homogeneous organic Br&#xf8;nsted acid catalyst in the presence of at least one aprotic polar solvent

The invention pertains to a method for converting butanediol into butadiene that is fed with a butanediol feedstock, where said method comprises at least an esterification step, a pyrolysis step, and a step for separation of the pyrolysis effluent comprising at least one section for cooling said pyrolysis effluent and producing a liquid pyrolysis effluent and a steam pyrolysis effluent and a gas-liquid washing section that is fed at the top with a fraction of the butanediol diester effluent obtained from the esterification step and at the bottom with the steam pyrolysis effluent, where said section produces a butadiene effluent at the top and a washing effluent at the bottom.

Conversion of butanediol into butadiene, with scrubbing using diesters

The invention relates to a process for purifying an aqueous solution comprising ethanol, acetaldehyde and diethylacetal comprising: a step A) of countercurrent liquid-liquid extraction comprising an extraction section supplied at the top by said aqueous solution as a mixture with at least one fraction of the water/ethanol/acetaldehyde raffinate resulting from the back extraction step B), and at the bottom by an extraction solvent, and producing an extract at the top and a purified feedstock at the bottom; &#x2014;a step B) of countercurrent liquid-liquid back extraction comprising a back extraction section supplied at the top by an acidic aqueous solution, the pH of which is between 0.5 and 5, and at the bottom by the extract resulting from step A), and producing an extract at the top and a water/ethanol/acetaldehyde raffinate at the bottom.

Process for purifying an aqueous solution comprising diethylacetal

The invention relates to a conversion method that is fed with a diol feedstock that comprises at least 90% by weight of diol and a carboxylic acid feedstock that comprises at least 80% by weight of carboxylic acid. The method comprising at least:

Method for esterification of a diol using a reactive distillation

The invention relates to a novel process for the conversion of a feedstock comprising at least one sugar to 5-hydroxymethylfurfural, in which said feedstock is contacted with one or more catalysts of the family of the homogeneous sulphonic acids in the presence of at least one aprotic polar solvent, used alone or in a mixture, at a temperature comprised between 30&#xb0; C. and 200&#xb0; C., and at a pressure comprised between 0.1 MPa and 10 MPa in which said catalysts are selected from the compounds of general formula 

Method for producing 5-hydroxymethylfurfural in the presence of catalysts of the family of homogeneous sulfonic acids in the presence of at least one aprotic polar solvent

A process for the production of butadiene from an ethanol feed having at least 80% by weight of ethanol, A) converting ethanol into acetaldehyde B) converting an ethanol/acetaldehyde mixture into butadiene, C1) hydrogen treatment, D1) butadiene extraction, a first butadiene purification D2), a subsequent butadiene purification D3), an effluent treatment E1), E2) eliminating impurities and brown oils and F) scrubbing with water.

Method for the production of butadiene and hydrogen from ethanol in two low-water and low-energy-consumption reaction steps

The invention pertains to the use of a solvent that comprises a Lewis donor compound that is selected from the group made up of unsaturated fatty acids that have between 12 and 18 carbon atoms, phosphate esters that have between 12 and 30 carbon atoms, and mixtures thereof to separate the impurities from a feedstock that contains ethanol, acetaldehyde, and impurities.

Use of a Lewis donor solvent to purify a feedstock that contains ethanol, acetaldehyde, and impurities

A method for producing 1,3-butadiene from a 1,4-butanediol feedstock:

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Lyons, France

Marc Jacquin