Method for preparing a catalyst

C - Chemistry – Metallurgy – 07 – D

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252/98, 260/365.

C07D 307/32 (2006.01) B01J 27/18 (2006.01) B01J 27/198 (2006.01) C07C 51/215 (2006.01)

Patent

CA 1042449

ABSTRACT The productivity of phosphorus-vanadium-oxygen catalysts useful for converting saturated hydrocarbons containing from 4 to 10 carbon atoms to maleic anhydride can be increased by the order of preparatory steps used to prepare such catalysts. Phosphorus-vanadium-oxygen catalysts are prepared by mixing phosphorus and vanadium compounds to form precursors, shaping the precursors and then calcining the precursors to form the catalysts. The catalysts are particularly beneficial for the conversion of butane to maleic anhydride.

191893

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