Presulfuration of a hydrogenation catalyst

摘要

The presulfuration of a hydrogenation catalyst consists of contacting the catalyst with elemental sulfur at a temperature which allows the former to penetrate the pores of the catalyst by sublimation and/or fusion. The process consists of a mixture comprising of an olefin, elemental sulfur and a promoter which is heated at 100-220 degrees C during 0.5 h or more in which the number of moles of elemental S is greater than the number of moles of double bonds of the olefin, and the ratio of the promoter used is 10-80 wt.% of the elemental S used.