The present invention relates to a process for preparing diols by hydrogenating a mixture comprising carboxylic acid, carboxylic anhydrides and/or carboxylic esters/lactones by means of a cobalt-comprising catalyst, wherein alkali metal and/or alkaline earth metal ions are added to the hydrogenation feed, excluding alkali metal and/or alkaline earth metal ions of mineral acids.
本发明涉及一种通过使用含
钴催化剂氢化包含
羧酸、
羧酸酐和/或
羧酸酯/内酯的混合物来制备二醇的方法,其中向氢化原料中添加碱
金属和/或碱土
金属离子,但不包括矿酸中的碱
金属和/或碱土
金属离子。