| abstract |
A catalyst for hydrogenation of unsaturated hydrocarbons, comprises an active metal, selected from palladium, platinum, nickel, copper and ruthenium, and is supported on a carrier and a silane group, and the silane group is grafted by silylation, and makes up 0.05 wt%-25 wt% of the total weight of the catalyst. The carrier is chosen from the group consisting of Al2O3, TiO2, V2O5, SiO2, ZnO, SnO2, ZrO2, MgO, activated carbon, kaolin and diatomite. The catalyst further comprises a metallic promoter, which makes up 0.01-10 wt% of the total weight of the catalyst, and comprises more than one metal chosen from sodium, potassium, caesium, calcium, magnesium, barium, gallium, indium, lead and bismuth. The process for preparing the catalyst involves supporting an active metallic component on the carrier, reducing the active metallic component to a metallic state, such as with hydrogen, or vulcanising it to a vulcanised state and silanising the catalyst using an organic silane, siloxane, silazane chlorosilane or mixtures thereof, to graft the silane group. |