| abstract |
PROBLEM TO BE SOLVED: To provide 1,4-cyclohexanedimethanol (CHD) by two-stage hydrogenation of terephthalic acid dialkyl ester In the production of M), there is provided a method for producing CHDM, wherein the second-stage hydrogenation reaction can be carried out under milder conditions. SOLUTION: The method for producing 1,4-cyclohexanedimethanol by hydrogenating dialkyl terephthalate comprises: 1) hydrogenating dialkyl terephthalate using a noble metal-based nuclear hydrogenation catalyst to obtain 1,4-cyclohexane; A first step of obtaining a dialkyl dicarboxylate; and 2) hydrogenolysis of the 1,4-cyclohexanedicarboxylic dialkyl ester obtained in the first step using a copper-zinc-alumina catalyst to give 1,4 -A second step of obtaining cyclohexanedimethanol. |