Effect Of Different Supports And Promoters On Performance Of Nitride Tungsten Catalyst

Strict environmental regulation for the amount of sulfur in fuel can be expected to be the driving force for deeper HDS of the more stable sulfur-containing molecules. Hydrotreating catalysts based upon transition metal sulfides can not meet the need of deep HDS because of the structures and properties. Developing transition metal nitride catalysts with high activities, which surface properties and catalytic activities are the same as noble metals, is an effective method to eliminate undesirable sulfur. In this thesis a series of supported nitride catalysts with different supports and promoters were prepared by temperture-programed nitriding of the oxidic...