Continuous process for producing gammabutyrolactone by...

Details Continuous process for producing gammabutyrolactone by... Continuous process for producing gammabutyrolactone by...

C - Chemistry, Metallurgy

07

D

260/366.8

C07D 307/32 (2006.01) B01J 23/89 (2006.01) C07D 315/00 (2006.01)

Patent

CA 1060461

CONTINUOUS PROCESS FOR PRODUCING GAMMA-BUTYROLACTONE BY CATALYTIC HYDROGEN OF MALEIC ANHYDRIDE (D#71,200-DTA-100-F) ABSTRACT OF THE DISCLOSURE A continuous process for producing gamma-butyro- lactone by hydrogenating maleic anhydride in two stages in the presence of a catalyst composed of cobalt oxide and palladium on a support of silica. The hydrogenation is performed at a hydrogen pressure of 100 to 125 atmospheres and at a temperature of 50 to 100°C. in the first stage and at 190 to 220°C. in the second stage. -I-

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