An improved nickel-tin hydrogenation catalyst additionally comprising palladium provides a highly active catalyst more easily activated than conventional nickel hydrogenation catalysts, and a process employing the improved catalyst to stabilize lubricating oils to ultraviolet radiation is disclosed....http://www.google.com.hk/patents/US4673487?utm_source=gb-gplus-share專利 US4673487 - Hydrogenation of a hydrocrackate using a hydrofinishing catalyst comprising palladium
