| 摘要 |
PURPOSE: To enhance productivity of cyclohexylamine or the like and to prolong the life of a catalyst by depositing specific compsn. ratios of Ru, Pd and Pt on an Al2 O3 or Al spinel carrier treated with Cr and Mn, thereby forming the Ru catalyst. CONSTITUTION: Compds. of Cr and Mn are applied on the carrier consisting of Al2 O3 or aluminum spinel and is treated and, thereafter, the carrier is treated at 200 to 450 deg.C. A noble metal and more preferably a basic alkali metal compd. are then applied and deposited to and on the carrier. The carrier is subsequently dried at 90 to 130 deg.C, by which the Ru catalyst is formed. In such a case, the total deposition weight of the noble metal is specified to 0.05 to 5 wt.% and the compounding ratio is specified to 1:9 to 9:1 Ru:Pd, Ru:Pt or Ru:Pd/Pt. Aniline is hydrogenated under pressurization at 80 to 240 deg.C in the presence of the Ru catalyst, by which cyclohexylamine and its mixture with dicyclohexylamine are obtd. |
