| 摘要 |
PROBLEM TO BE SOLVED: To obtain a mixture of butanediol and a specific diol in high yield by allowing a mixture of succinic acid and a specific dicarboxylic acid to react with hydrogen in the presence of a specific catalyst and water. SOLUTION: A mixture of (A) succinic acid and (B) a dicarboxylic acid of the formula: HOOC-R-COOH (R is a 3-20C saturated divalent hydrocarbon), (C) hydrogen are allowed to react with each other in the presence of (D) a catalyst prepared by carrying one or more metals selected from ruthenium and tin, rhenium, molybdenum, palladium, silver and nickel supported by carbon carrier that is preliminarily treated with steam and/or carbon dioxide and (E) water under a pressure of 1-25 Mpa, at 100-300 deg.C to obtain a mixture of 1,4- butandiol and a diol of the formula: HO-CH2-R-CH2OH. As a mixture of the component A and the component B, are cited preferably a mixtures of dicarboxylic acids including the component A, glutaric acid and adipic acid. |
