TWO-STAGE PROCESS FOR THE PRODUCTION OF 1,3-PROPANEDIOL BY CATALYTIC HYDROGENATION OF 3-HYDROXYPROPANAL

摘要

A two-stage process for producing 1,3-propanediol by first hydrogenating at a temperature of 30 ~C to 80 ~C in the presence of an oxide-supported metal hydrogenation catalyst. Second, the resulting reaction solution is hydrogenated at a temperature of 80 ~C to 180 ~C to a 3-hydroxypropanal conversion of substantially 100 % in the presence of an activated carbon- supported metal hydrogenation catalyst.