Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1976-08-20
1978-04-11
Shine, W. J.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252460, 252474, 2603436, B01J 2106, B01J 2342, B01J 2344, B01J 2372
Patent
active
040838099
ABSTRACT:
Hydrogenation catalyst and a process for producing gamma-butyrolactone by hydrogenating a feed compound -- selected from the group consisting of maleic acid, succinic acid, maleic anhydride, succinic anhydride, and mixtures of any of the foregoing -- in the vapor phase, in the presence of said catalyst, which is a highly selective elemental Cu-Pd or Cu-Pt catalyst, in order to produce high yields of gamma-butyrolactone and minimize the formation of by-products.
REFERENCES:
patent: 3076858 (1963-02-01), Frevel et al.
patent: 3228991 (1966-01-01), Dulaney et al.
patent: 3274286 (1966-09-01), Reich
patent: 4001282 (1977-01-01), Miller
patent: 4021374 (1977-05-01), Petro et al.
De Thomas Waldo
Hort Eugene V.
GAF Corporation
Katz Walter
Kehm Walter C.
Shine W. J.
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