Arkema France

Centre National De La Recherche Scientifique

Université Des Sciences Et Technologies De Lille 1

Pivert

Université De Lille

Université Des Sciences Et Technologies De Lille

Ecole Centrale De Lille

Mickaël Capron

Jean-Luc Dubois

Franck Dumeignil

Markus Brandhorst

Louise Duhamel

Elzbieta Skrzynska

Christophe Dujardin

Pierre Miquel

Jérémy Faye

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 CeO, basic AlOoptionally doped with a calcium or cerium oxide, an amphoteric resin, ZrO, 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.

Method for synthesising glycolic acid

The present invention concerns a method for directly synthesizing acrolein or methacrolein from a mixture of methanol and ethanol or propanol. The method of the invention comprises two successive phases: oxidation in the presence of a selective oxidation catalyst of the light alcohols of the feedstock, then condensation by aldolization of the aldehydes formed during oxidation in the presence of a condensation catalyst (aldolization). Alternatively, the two phases can be carried out in the presence of a single catalyst, in particular in the presence of a molybdenum-based selective oxidation catalyst. These two phases can be conducted in a single reactor or in two cascade reactors.

Method for directly synthesizing unsaturated aldehydes from alcohol mixtures

The use of a complex oxide having the following composition (I). MoVXXXXO(I) wherein Mo is molybdenum; V is vanadium; O is oxygen; Xis at least one element selected from tungsten, titanium, tantalum and niobium; Xis at least one element selected from copper, antimony, tellurium and bismuth; Xis at least one element selected from alkaline earth metals; Xis at least one element selected from alkaline metals; and O&#x3c;a&#x2266;10; O&#x2266;b&#x2266;4; O&#x3c;c&#x2266;5; O&#x2266;d&#x2266;2; O&#x2266;e&#x2266;2; and x is a numerical value determined by the extents of the oxidation of the other elements, as a catalyst in the preparation of a partial oxidation product of a lower alcohol by direct oxidation of a lower alcohol in the vapor phase.

Process for preparing partial oxidation products of lower alcohols by direct oxidation of a lower alcohol and catalysts for use in that process

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Bachy, France

Mickaël Capron