PROCESS FOR THE PREPARATION OF PROPANE 1,3 DIOL BY VAPOR PHASE HYDROGENATION OF 3 HYDROXYPROPANAL, BETA PROPIOLACTONE, OLIGOMERS OF BETA PROPIOLACTONE, ESTERS OF 3 HYDROXYPROPANOIC ACID OR MIXTURES THEREOF.

摘要

A process is described for the production of propane 1,3 diol. The process comprises subjecting a vaporous feed mixture comprising a hydrogen containing gas and a feedstock selected from 3 hydroxypropanal, bgr; propiolactone, oligomers of bgr; propiolactone, esters of 3 hydroxypropanoic acid, and mixtures of two or more thereof to hydrogenation conditions in a hydrogenation zone in the presence of a heterogeneous hydrogenation catalyst, and recovering a reaction product comprising propane 1,3 diol.