| 摘要 |
PROBLEM TO BE SOLVED: To obtain 1,6-hexanediol in high yield by reaction of a specific compound such as adipic acid with hydrogen in a liquid phase in the presence of a catalyst prepared by bearing ruthenium and tin on a carbonaceous carrier previously treated with an acid. SOLUTION: This 1,6-hexanediol is obtained by hydrogenation of a compound selected from adipic acid, oxycaproic acid and caprolactone in a liquid phase pref. under a pressure of 1-25 Mpa at 100-250 deg.C in the presence of a catalyst prepared by beating ruthenium and tin on a carbonaceous carrier. Specifically, the above catalyst is prepared, for example, by the following process: a carbonaceous carrier (pref. active carbon) is put into a 5-60 wt.% aqueous nitric acid solution pref. at 50-90 deg.C for 10 min or longer to conduct an acid treatment, and the resultant carrier is dried until its moisture content comes to pref. <=1 wt.% and then immersed in a solution prepared by dissolving stock compounds (e.g. mineral acid salts) of the metallic components in a solvent (e.g. water) to effect bearing pref. each 1-20 wt.% of ruthenium and tin and, as necessary, platinum at 0.1-5 wt. times based on the ruthenium on the carrier. |
