Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1994-06-27
1997-02-11
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562538, 562547, 562577, 562599, 502 38, C07C 5116
Patent
active
056022808
ABSTRACT:
Disclosed are a process for producing an unsaturated aldehyde and an unsaturated carboxylic acid which comprises subjecting propylene, isobutylene or tertiary butanol to gas phase catalytic oxidation with molecular oxygen in the presence of (i) a catalyst comprising composite oxide of the formula Mo.sub.a Bi.sub.b Fe.sub.c A.sub.d B.sub.e C.sub.f D.sub.g O.sub.x and (ii) a molybdenum oxide which in itself is substantially inert to the gas phase catalytic oxidation; a process for reusing the catalyst deteriorated due to the gas phase catalytic oxidation after mixing it with the molybdenum oxide; and a method of regenerating the deteriorated catalyst by mixing it with the molybdenum oxide.
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patent: 4425255 (1984-01-01), Toyoda et al.
patent: 4709070 (1987-11-01), Sasaki et al.
patent: 4757038 (1988-07-01), Sasaki et al.
patent: 5276178 (1994-01-01), Onodera et al.
Nagai Koichi
Nagaoka Yoshihiko
Nomura Yoshisaburou
Geist Gary
Sumitomo Chemical Company Limited
Williams Rosalynd A.
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