PROCESS FOR PREPARING A REFORMING CATALYST COMPRISING A SUPPORT, A GROUP VIIIB METAL AND A GROUP VIIB METAL
申请人:Oudart Yohan
公开号:US20090143224A1
公开(公告)日:2009-06-04
For preparing a reforming catalyst comprising a support, a group VIIIB metal and a group VIIB metal, comprises the following steps in the order a) then b) or b) then a):
a step a) impregnating the support with an aqueous solution of hydrochloric acid comprising a group VIIIB metal;
a step b) impregnating the support with an aqueous solution comprising a group VIIB metal and a sulphur-containing complexing agent in a reducing environment, or a step b) impregnation with an aqueous solution comprising a group VIIB metal, then with a solution comprising a sulphur-containing complexing agent in a reducing environment.
The reducing environment is any reducing atmosphere comprising more than 0.1% by weight of a reducing gas or a mixture of reducing gases; or reducing solutions comprising, with respect to the group VIIB metal, in the range 0.1 to 20 equivalents of reducing metals, reducing organic compounds or inorganic reducing compounds.