Document Type and Number:
Japanese Patent JPS5195057
Kind Code:
A
Abstract:
A continuous process for producing gamma-butyrolactone 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 DEG to 100 DEG C. in the first stage and at 190 DEG to 220 DEG C. in the second stage.
Application Number:
JP373276A
Publication Date:
August 20, 1976
Filing Date:
January 14, 1976
Export Citation:
International Classes:
B01J21/00; B01J23/00; B01J23/89; C07D307/33; C07B61/00; C07D307/04; C07D315/00; (IPC1-7): B01J21/08; B01J23/74; C07D307/32
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