COMO BIMETALLIC NITRIDE CATALYSTS FOR THIOPHENE HDS

CoMo bimetallic nitride catalysts were prepared by temperature-program med reduction of CoMo oxides with flowing ammonia, and the effects of cobalt addition on the thiophene hydrodesulfurization (HDS) reaction w ere investigated. MoO3 transformed into Mo2N, while cobalt oxide was j ust reduced to Co metal rather than Co nitride. When Co was added to M o, the surface area decreased significantly but the new bimetallic nit ride phase of Co3Mo3N was produced. The addition of Co could improve t he HDS conversion, and the high specific activity of the bimetallic ni tride catalyst was believed to be related with the new Co3Mo3N phase.