| 摘要 |
F-4215 A process for hydrocracking 343.degree.C + feed containing polycyclic aromatics to form a lube base stock having enhanced oxidation stability and viscosity index is disclosed. The hydrocracking catalyst is a layered silicate, such as magadiite, which contains interspathic polymeric silica and interspathic polymeric oxides of one or more elements selected from the group consisting of Al, B, Cr, Ga, In, Mo, Nb, Ni, Ti, Tl, W and Zr, preferably Al. The catalyst may contain a hydrogenation component, e.a, palladium. |
