Method of preparing 1,3-propanediol

摘要

A method for preparing 1,3-propanediol is disclosed which comprises the hydration of acrolein in the presence of an acidic cation exchanger resin and the hydrogenation of the 3-hydroxypropionaldehyde obtained in the first stage. The volume-time yield was able to be increased in the hydration stage by using a cation exchanger resin with phosphonic acid groups, preferably a cation exchanger with chelating aminophosphonic acid groups. The hydrogenation catalyst can be repeatedly reused without appreciable loss of activity.