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AssigneeE. I. Du Pont de Nemours and Company
InventorsMarc J. Ledoux, Baudain Heinrich, Jan Joseph Lerou, Claude Crouzet, Christophe Bouchy, Kostantinos Kourtakis
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A catalyst comprising vanadium phosphorus oxide combined with a thermally conductive material is particularly useful for the selective hydrocarbon oxidations (e.g., butane to maleic anhydride) and can be prepared by forming a suspension comprising a vanadium (IV) phosphate compound in a liquid medium (via hydrochloric acid digestion of V2O5 and H3PO4 in an aqueous solvent or via heating vanadium pentoxide with at least one substantially anhydrous unsubstituted alcohol having 1-10 carbon atoms, 1-3 hydroxyl groups free from olefinic double bonds to form a feed of vanadium pentoxide reduced to a valence between 4 and 4.6, and then contacting the feed with a solution of orthophosphoric acid and at least one unsubstituted alcohol), adding a thermally conductive material to the suspension under agitation at moderated temperature between 40° C. and 120° C., followed by drying, optionally but preferably washing and calcining (either in situ or ex situ) the material thus formed.
A process for preparing a catalyst comprising vanadium phosphorus oxide combined with a thermally conductive material, comprising the steps of:
A process for preparing a catalyst comprising vanadium phosphorus oxide combined with a thermally conductive material, comprising the steps of:
A process for the oxidation of a hydrocarbon comprising contacting a hydrocarbon with a catalyst comprising vanadium phosphorus oxide combined with a thermally conductive material wherein the contacting is performed at a temperature of from 400° C. to 650° C.
Dependencies are inferred from the claim text.