Preparation method, noble metal hydrogenation catalyst and the application of noble metal hydrogenation catalyst

摘要

The present invention relates to a process for preparing a noble metal hydrogenation catalyst comprising preparing a support from a molecular sieve having a 10-membered ring structure and / or an amorphous porous material; preparing a noble metal impregnation solution from one or more noble metal compounds Pt, Pd, Ru, Rh, Re, and Ir and deionized water or an acidic solution; and preparing noble metal impregnation solutions in a concentration gradient in the range of 0.05 to 5.0% by weight with deionized water, and sequential impregnation of the support with the impregnating solutions low to high concentrations during the impregnation process of the support, or the preparation of a noble metal impregnation solution at a low concentration in the range of 0.05 to 0.5% by weight and the impregnation of the support by gradually increasing the concentration of the noble metal impregnation solution from 2.0 to 5.0% by weight in the impregnation process, followed by homogenization, drying and calcination, as well as a catalyst noble metal hydrogenation process, its use, and a process for preparing lubricant base oil. The catalyst of the present invention has high activity and stability, and the lubricant base oil produced has a high viscosity index and a low pour point.