3- - - 3- -13- PROCESS FOR THE PREPARATION OF PROPANE-13-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 for producing propane-1,3-diol is described. The process of the present invention is characterized in that the process is carried out essentially in the presence of a hydrogen-containing gas and a mixture of at least one of a hydrogen-containing gas and an ester of 3-hydroxypropanoic acid, Comprising reacting a gaseous raw material mixture comprising a feed source of anhydrous feed under hydrogenation conditions in a hydrogenation reaction zone in which a heterogeneous hydrogenation catalyst is present and recovering the propane-1,3-diol containing reaction product do.