Catalyst and process for preparing maleic anhydride from C.sub.4

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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252435, 26034674, B01J 2718

Patent

active

040495744

ABSTRACT:
A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an alkali or alkaline earth metal.

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patent: 3478063 (1969-11-01), Friedrichsen et al.
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patent: 3736354 (1973-05-01), Yanagita et al.
patent: 3980585 (1976-09-01), Kerr et al.

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