PRODUCTION OF 1,2-PROPANEDIOL

摘要

This invention relates to a process for producing 1,2 -propanediol by hydrogenolysis of glycerol in the presence of a supported metal catalyst and hydrogen. Glycerol having a water content of less than 3 % by weight and hydrogen are introduced into a reactor and reacted in the presence of a copper-based catalyst at a pressure of 20-150 bar and a temperature of 150-4000°C. Water formed in the reaction is removed from the reactor to keep the water content in the obtained reaction solution at less than 5 % by weight.