Process for producing a phosphorus-vanadium oxide catalyst precu

Details Process for producing a phosphorus-vanadium oxide catalyst precu Process for producing a phosphorus-vanadium oxide catalyst precu

1994-12-20

1996-06-25

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549262, 502150, 502167, 502172, 502209, 502210, 502213, 423305, 423306, C07D30734, C07D30736, B01J 27198, C01B 1516

Patent

active

055301444

ABSTRACT:
A process for producing a precursor of a phosphorus-vanadium oxide catalyst for production of maleic anhydride by vapor phase oxidation of a hydrocarbon having 4 carbon atoms, which comprises reacting phosphoric acid and a pentavalent vanadium compound in an organic solvent capable of reducing at least a portion of the pentavalent vanadium to a valence state of +4, the phosphoric acid being substantially composed of orthophosphoric acid, and a phosphoric acid solution whose concentration is 88 to 96% being used as a source of the phosphoric acid; and a process for producing the catalyst comprising dry-pulverizing the catalyst precursor.

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