Process for preparing 1,3-alkanediols

摘要

A process for preparing 1,3-alkanediols via the hydrogenation of 3-hydroxyalkanals wherein the process comprises passing an aqueous 3-hydroxyalkanal solution to a hydrogenation zone and in contact with a fixed-bed hydrogenation catalyst under hydrogenation conditions to form an aqueous 1,3-alkanediol solution, characterized in that the aqueous 3-hydroxyalkanal solution has a 3 hydroxyalkanal concentration within the range of 0.2 to 5 wt.%.