Process for producing gamma-butyrolactone

Details Process for producing gamma-butyrolactone Process for producing gamma-butyrolactone

C - Chemistry, Metallurgy

07

D

C07D 307/33 (2006.01) C07D 315/00 (2006.01)

Patent

CA 2129709

Process for Producing Gamma-butyrolactone ABSTRACT OF THE DISCLOSURE Gamma-butyrolactone is produced by catalytic hydrogenation of maleic anhydride in the vapor phase in the presence of catalysts on the basis of copper chromite in reduced form. The reaction is carried out using a substantially uniform catalyst derived substantially from the 3 components cupric oxide, chromic oxide, and silicon dioxide. The ratio of CuO to Cr2O3 to SiO2 is preferably about 78:20:2. It can prove advantageous to use an inert gas such as nitrogen as a di- luent.

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