CATALYST FOR HYDROGENATION OF AROMATIC HYDROCARBONS AND METHOD OF PREPARATION THEREOF Russian patent published in 1999 - IPC

FIELD: petrochemistry and hydrogenation catalysts. SUBSTANCE: catalyst including platinum on aluminum carrier is distinguished by containing iridium with following component contents: platinum 0.01-0.05 wt %, iridium 0.01-0.05 wt %, and aluminum, the balance. Catalyst preparation procedure includes immersing, for 90-150 min, preliminarily oxidized aluminum metal carrier into aqueous solution, containing 0.05-0.01 mole/g potassium hydroxide and ammonia platinum complex [Pt(NH₃)₄]Cl₂, placed in closed space at 170-210 C. Novelty consists in that concentration of mentioned platinum-ammonia complex ranges from 5•10^-5 to 6•10^-4 M and iridium complex [Ir(NH₃)₅Cl]Cl₂ is added in concentration 5•10^-5-6•10^-4 M, while carrier is immersed into solution at ratio of loose volume of granulated aluminum to solution volume from 1: 15 to 1:11. EFFECT: enabled high yield of desired products with high mechanical strength and reduced expenses. 2 cl, 2 tbl