发明名称 |
Vanadium phosphorus oxide catalyst having a thermally conductive support |
摘要 |
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.
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申请公布号 |
US6660681(B1) |
申请公布日期 |
2003.12.09 |
申请号 |
US20010958584 |
申请日期 |
2001.10.09 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
LEDOUX MARC J.;HEINRICH BAUDAIN;LEROU JAN JOSEPH;CROUZET CLAUDE;BOUCHY CHRISTOPHE;KOURTAKIS KOSTANTINOS |
分类号 |
B01J27/198;B01J27/22;B01J27/224;B01J27/24;C07C51/215;(IPC1-7):B01J27/198;B01J31/00;B01J21/02 |
主分类号 |
B01J27/198 |
代理机构 |
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