1
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Process for dehydrating glycerol to acrolein. Arkema France, Steven D Boyd, July 8, 2008: US07396962 (25 worldwide citation)

The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycero ...


2
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich, Jacques Kervennal: Process for dehydrating glycerol to acrolein. Arkema France, Steven D Boyd, February 2, 2010: US07655818 (12 worldwide citation)

The present invention relates to a process for manufacturing acrolein by gas-phase dehydration of glycerol in the presence of strongly acidic solid catalysts with a Hammett acidity H0 of between −9 and −18 and preferably between −10 and −16.


3
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Method for producing acrylic acid from glycerol. Arkema France, Steven D Boyd, March 22, 2011: US07910771 (8 worldwide citation)

The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction preferably carried out in gaseous phase in the presence of a suitable catalyst.


4
Jean-luc Dubois
Jean Luc DuBois, Edmond Payen, Michel Fournier, Pascal Blanchard, Anne Griboval: Process for preparing water-treatment catalysts. Elf Antar France, Burgess Ryan & Wayne, July 18, 2000: US06090745 (8 worldwide citation)

The invention provides a method for preparing catalysts, containing metals of groups VI and VIII on a carrier. The metals of groups VI and VIII metals are introduced in the form of a compound of formula M.sub.x A B.sub.12 O.sub.40 in which M is cobalt and/or nickel, A is phosphorus, silicon and/or b ...


5
Jean-luc Dubois
Jean Luc Dubois: Acrolein Preparation Method. Arkema France, Steven D Boyd, May 12, 2009: US07531699 (5 worldwide citation)

The invention relates to a method for preparing acrolein from propylene, consisting of a first glycerol dehydration step preformed in the presence of a gas containing propylene and, more specifically, in the presence of the reaction gas originating from the propylene to acrolein oxidation step. The ...


6
Jean-luc Dubois
Jean Luc Dubois, Fabienne Desdevises, Stéphanie Serreau, Damien Vitry, Wataru Ueda: Process for the production of acrylic acid from propane. Arkema, Buchanan Ingersoll & Rooney PC, February 19, 2008: US07332625 (4 worldwide citation)

The invention concerns a method for producing acrylic acid from propane, which consists in passing a gas mixture including propane, water, vapor, and optionally an inert gas and/or molecular oxygen, on a catalyst of formula (I): Mo1VaSbbNbcSidOx, wherein: a ranges between 0.006 and 1, inclusively; b ...


7
Jean-luc Dubois
Jean Luc Dubois, Markus Brandhorst, Mickaël Capron, Christophe Dujardin: Process for preparing partial oxidation products of lower alcohols by direct oxidation of a lower alcohol and catalysts for use in that process. Arkema France, Collard & Roe P C, July 20, 2010: US07759525 (4 worldwide citation)

The use of a complex oxide having the following composition (I). Mo12VaX1bX2cX3dX4eOx (I) wherein Mo is molybdenum; V is vanadium; O is oxygen; X1 is at least one element selected from tungsten, titanium, tantalum and niobium; X2 is at least one element selected from copper, antimony, tellurium and ...


8
Jean-luc Dubois
Jean Luc Dubois, Yasuhiro Magatani, Kimito Okumura: Process for manufacturing acrolein or acrylic acid from glycerin. Arkema France, Lynn B Morreale, August 28, 2012: US08252960 (3 worldwide citation)

The subject of the present invention is a process for preparing acrolein by dehydration of glycerin, characterized in that the dehydration is carried out in the presence of a catalyst comprising mainly a compound in which protons in a heteropolyacid are exchanged at least partially with at least one ...


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Jean-luc Dubois
Jean Luc Dubois: Process for manufacturing acrolein from glycerol. Arkema France, Lynn B Morreale, February 19, 2013: US08378136 (2 worldwide citation)

The subject of the present invention is a process for preparing acrolein by dehydration of glycerol in the presence of a catalyst system comprising oxygen, phosphorus and at least one metal chosen from vanadium, boron or aluminium. The process is preferably carried out in the gas phase in the presen ...



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