申请人:SAMSUNG ELECTRONICS CO., LTD.
公开号:EP1211234A2
公开(公告)日:2002-06-05
The present invention relates to a process for preparing 1,3-alkandiols from 3-hydroxyesters. More specifically, the present invention relates to a process for preparing 1,3-alkandiols from 3-hydroxyesters, which comprising hydrogenating 3-hydroxyesters in an alcohol-containing solvent in the presence of a novel hydrogenation catalyst, wherein said alcohol-containing solvent is a pure alcohol or a mixed solvent consisting of an alcohol and a high-boiling point solvent which boils at a higher temperature than the 1, 3-alkandiol does, and said catalyst was prepared by adding alkaline precipitator, such as alkali metal carbonates or sodium hydroxide, to an aqueous solution containing copper salt to form particles, and then ageing said particles following addition of colloidal silica thereto. According to the process of the present invention, 1,3-alkandiols can be selectively produced from 3-hydroxyesters in a high yield.
本发明涉及一种从 3-羟基酯制备 1,3-烷二醇的工艺。更具体地说,本发明涉及一种从 3-羟基酯制备 1,3-烷二醇的工艺,该工艺包括在新型氢化催化剂存在下,在含醇溶剂中氢化 3-羟基酯,其中所述含醇溶剂为纯醇或由醇和高沸点溶剂组成的混合溶剂,高沸点溶剂的沸点高于 1、3-烷二醇,而所述催化剂的制备方法是:在含有铜盐的水溶液中加入碱式沉淀剂,如碱金属碳酸盐或氢氧化钠,形成颗粒,然后在其中加入胶体二氧化硅,使所述颗粒老化。根据本发明的工艺,1,3-烷二醇可以选择性地从 3-羟基酯中高产制得。