Process for producing gamma-butyrolactone

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

1994-08-03

1996-07-16

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502244, C07D30720, C07D30733

Patent

active

055368492

ABSTRACT:
Gamma-butyrolactone is produced by catalytic hydrogenation of maleic anhydride in the vapor phase in the presence of copper chromite based catalysts in reduced form. The reaction is carried out using a substantially uniform catalyst derived substantially from the three components cupric oxide, chromic oxide, and silicon dioxide. The ratio of CuO to Cr.sub.2 O.sub.3 to SiO.sub.2 is preferably about 78:20:2. It can prove advantageous to use an inert gas such as nitrogen as a diluent.

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