HYDROGENATION PROCESS

摘要

A hydrogenation process for reducing the unsaturation of lubricants uses a catalyst which is based on an ultra-arge pore crystalline material. The crystalline material has pores of at least 1.3 nm (13 A) diameter arranged in a uniform manner and exhi- bits unusually large sorption capacity demonstrated by its benzene adsorptio n capacity of greater than 15 grams benzene/100 grams (6.7 kPa/50 torr and 25.degree.C). A preferred form of the catalyst ha s a hexagonal structure which exhibits a hexagonal elec- tron diffraction pattern that can be indexed with a d100 value greater than 1.8 nm (18 A). The hydrogenation catalysts based on these materials are capable of reducing the unsaturation in poly alpha olefi n lubricants to a low level.