US 8,785,340 B2 · Catalyst exhibiting hydrogen spillover effect

Abstract

The catalyst exhibiting hydrogen spillover effect relates to the composition of a catalyst exhibiting hydrogen spillover effect and to a process for preparing the catalyst. The catalyst has a reduced transition base metal of Group VIB or Group VIIIB, such as cobalt, nickel, molybdenum or tungsten, supported on a high porous carrier, such as saponite, the base metal being ion-exchanged with at least one precious metal of Group VIIIB. The process includes the steps of loading the base metal onto the support, reducing the base metal, preferably with H2 at 600° C., and thereafter ion-exchanging the precious metal with the base metal. Preferred examples of the catalyst include a saponite support loaded with about 10-20 wt % cobalt and about 0.1-1 wt % precious metal. The catalyst is optimized for reactions that occur in commercial processes at about 360-400° C., such as in hydrocracking.

Claims3

Dependent claims

A catalyst exhibiting hydrogen spillover effect for hydrocracking aromatic feedstocks, consisting essentially of:

a porous support made from saponite clay, the porous support having a surface area between 400 and 600 m2/g and a total pore volume between 0.45 and 0.75 ml/g;
palladium loaded on the porous support, the palladium being reduced by H2 at about 600° C. after being loaded on the porous support, the reduced palladium forming about 1 wt % of the catalyst;
a base metal impregnated on the reduced palladium-loaded saponite support, the base metal being cobalt and oxides or salts thereof, a portion of the cobalt and oxides or salts thereof being reduced by H2 at about 600° C. after being impregnated on the support;
and
rhodium or water soluble salts or oxides thereof ion-exchanged with the reduced cobalt and oxides or salts thereof and the reduced palladium and forming about 0.1 wt % of the catalyst, wherein the catalyst exhibits maximum hydrogen spillover effect between 360° C. and 400° C.

2 more elements

Dependencies are inferred from the claim text.

Catalyst exhibiting hydrogen spillover effect

Life of this patent

Catalyst exhibiting hydrogen spillover effect

Life of this patent

Abstract

Claims3