Abstract: A method is for the preparation of furoic acid or of one of its derivatives of formula (I): in which R1, R2, R3 and R4 represent, independently of each other, a hydrogen atom, a linear or branched C1-C6 alkyl group, a —C(?O)—H group or a —COOH group, by heterogeneous catalytic oxidation of furfural or a derivative thereof of formula (II). The oxidation is carried out in the presence of a supported catalyst based on gold nanoparticles, and in a non-alkaline aqueous medium. A composition useful in the method includes at least furfural and supported gold nanoparticles.

Abstract: A method is for the preparation of furoic acid or of one of its derivatives of formula (I): in which R1, R2, R3 and R4 represent, independently of each other, a hydrogen atom, a linear or branched C1-C6 alkyl group, a —C(?O)—H group or a —COOH group, by heterogeneous catalytic oxidation of furfural or a derivative thereof of formula (II). The oxidation is carried out in the presence of a supported catalyst based on gold nanoparticles, and in a non-alkaline aqueous medium. A composition useful in the method includes at least furfural and supported gold nanoparticles.

Abstract: The present invention relates to the use of rhenium-containing supported heterogeneous catalysts for the deoxydehydration of glycerol to allyl alcohol, as well as to a process for the production of allyl alcohol from glycerol, in the presence of such heterogeneous catalysts.

Abstract: The invention concerns a synthesis process of a compound of the following formula (I) or one of the salts thereof, wherein R represents a COOH, CH2OH or CHO group, comprising the step according to which the but-3-ene-1,2-diol (BDO) is subjected to an oxidation in the presence of a catalyst, said catalyst comprising an active phase based on at least one noble metal selected from palladium, gold, silver, platinum, rhodium, osmium, ruthenium and iridium, and a support containing alkaline sites. The invention also concerns the application of this reaction to the preparation of bioavailable compounds of methionine used, in particular, in animal nutrition.

Abstract: The present invention relates to the use of haloapatites as catalysts of the dehydration reaction of ?-hydroxylated carboxylic acids or acid esters, in particular of lactic acid or of methyl lactate, and also to a process for producing unsaturated carboxylic acids or acid esters, in particular acrylic acid or methyl acrylate, in the gas phase in a stainless steel reactor, in the presence of such a catalyst.

Abstract: The present invention relates to the use of molybdenum and vanadium mixed oxides, optionally iron doped, as catalysts for the oxidation of unsaturated alcohols, in particular allyl alcohol, and also to a process for the production of unsaturated carboxylic acids, in particular acrylic acid, in the gas phase, in the presence of such a catalyst.

Abstract: The present invention relates to the use of molybdenum and vanadium mixed oxides, optionally iron doped, as catalysts for the oxidation of unsaturated alcohols, in particular allyl alcohol, and also to a process for the production of unsaturated carboxylic acids, in particular acrylic acid, in the gas phase, in the presence of such a catalyst.

Abstract: The present invention relates to the use of molybdenum and vanadium mixed oxides, optionally iron doped, as catalysts for the oxidation of unsaturated alcohols, in particular allyl alcohol, and also to a process for the production of unsaturated carboxylic acids, in particular acrylic acid, in the gas phase, in the presence of such a catalyst.

Abstract: The present invention relates to the use of rhenium-containing supported heterogeneous catalysts for the deoxydehydration of glycerol to allyl alcohol, as well as to a process for the production of allyl alcohol from glycerol, in the presence of such heterogeneous catalysts.

Abstract: The present invention relates to a process for production of hydrogen at low temperature starting from alcohols without formation of carbon using an oxyhydride material based on cerium and nickel and to the use of such a material as catalyst for transformation of alcohols to hydrogen.

Abstract: The present invention relates to the use of haloapatites as catalysts of the dehydration reaction of ?-hydroxylated carboxylic acids or acid esters, in particular of lactic acid or of methyl lactate, and also to a process for producing unsaturated carboxylic acids or acid esters, in particular acrylic acid or methyl acrylate, in the gas phase in a stainless steel reactor, in the presence of such a catalyst.

Abstract: The invention concerns a synthesis process of a compound of the following formula (I) or one of the salts thereof, wherein R represents a COOH, CH2OH or CHO group, comprising the step according to which the but-3-ene-1,2-diol (BDO) is subjected to an oxidation in the presence of a catalyst, said catalyst comprising an active phase based on at least one noble metal selected from palladium, gold, silver, platinum, rhodium, osmium, ruthenium and iridium, and a support containing alkaline sites. The invention also concerns the application of this reaction to the preparation of bioavailable compounds of methionine used, in particular, in animal nutrition.

Abstract: A method for oxidation of glycerol into glyceric acid is described, which includes a step of treating glycerol with a supported metal catalyst in the presence of oxygen, said catalyst including platinum and a metal element selected from the group comprising tin, molybdenum, bismuth and a mixture thereof.

Abstract: A method for synthesising a second ester from a first ester, the method including the following steps: a) placing a first ester and a catalyst in the presence of dihydrogen such as to obtain a first alcohol and a second alcohol; b) extracting the second alcohol from the reaction medium; c) reacting the first alcohol with the catalyst of step a) in order to obtain a second ester and dihydrogen; and d) recirculating the dihydrogen obtained in step c) by injecting same into step a).

Abstract: The invention relates to a device (1) for evaluation of at least one performance criterion of heterogeneous catalysts, comprising; at least one reactant source (2), at least one reaction zone equipped with at least one catalyst and connected to at least one reactant source (2) in such a way as to produce, in each reaction zone, a heterogeneous catalytic reaction between each catalyst present in the reaction zone and the reactant or reactants coming from each reactant source (2) connected to the reaction zone, and means for evaluation of at least one performance criterion of heterogeneous catalysts, characterized in that the device (1) further comprises a gas chromatograph and in that each reaction zone (9) is situated in an injector (8) of the gas chromatograph.

Abstract: A compound of the formula SbxFe1Oy (I) in which x varies from 0.4 to 1 inclusive and y varies from 1.6 to 4 inclusive, may be used as a catalyst for catalyzing the ammoxidation reaction of an alcohol of following formula (II) CH2?C(R1)—CH2—OH (II) in which R1 represents a hydrogen atom or a methyl radical, to give nitrile of following formula (III) CH2?C(R1)—C?N (III) in which R1 has the same meaning as in above formula (II), the said reaction being carried out in the gas phase, the said gas phase comprising at least oxygen and ammonia. The present invention also relates to the process for the ammoxidation of an alcohol of formula (II) employing a compound of formula (I) as catalyst.

Abstract: The invention relates to a method for synthesizing glycolic acid or one of the salts thereof, including the following step: placing glycerol and an oxidizing agent in contact with one another in a reaction medium in the presence of a silver-based catalyst on a substrate, said substrate including a material selected from the group consisting of CeO2, basic Al2O3 optionally doped with a calcium or cerium oxide, an amphoteric resin, ZrO2, and a mixture of said materials. The invention also relates to the use of a silver-based catalyst on a substrate that can be used in said method.

Abstract: The present invention concerns a process for the production of an aldehyde compound by an oxidation reaction of an alcohol compound in the presence of a mesostructured vanadium phosphorus mixed oxide catalyst, at a temperature comprised between 50° C. and 200° C., in presence of an oxidant. The reaction medium may also comprise a solvent.

Abstract: A method for synthesising a second ester from a first ester, the method including the following steps: a) placing a first ester and a catalyst in the presence of dihydrogen such as to obtain a first alcohol and a second alcohol; b) extracting the second alcohol from the reaction medium; c) reacting the first alcohol with the catalyst of step a) in order to obtain a second ester and dihydrogen; and d) recirculating the dihydrogen obtained in step c) by injecting same into step a).

Abstract: A method for synthesising esters from alcohols by dehydrogenating coupling in the presence of a catalyst of formula 1 as well as to the use of catalysts of formula 1 for synthesising esters. The method according to the invention can be used in particular for the production of dihydrogen. The invention also relates to novel catalysts as well as to the uses thereof.