Patent ID: 7754650
Filing Date: 2010-07-13
Classification: B01D,B01J,C10G,Y10S

Abstract:
1. A trifunctional catalyst for sulphur transfer, denitrogenation and combustion promoting, comprising an absorbent and an oxidative catalyst which is physically dispersed over the absorbent, wherein said oxidative catalyst is composed of cerium dioxide, cerium oxyfluoride, and vanadium pentoxide; the raw material for forming the cerium dioxide and cerium oxyfluoride is hamartite powder; and said absorbent is a spinel-like composite oxide having the following formula: where A represents the alkaline-earth element Mg of periodic table of elements, B represents the group IIIA metallic element Al, B′ represents the transition metallic element Fe, x represents 0.01-0.5, y represents 0.2-1.2, and the magnesium oxide exists in its free form; wherein said cerium dioxide and cerium oxyfluoride combined represent 20%-35% of the weight of the trifunctional catalyst; and wherein said vanadium pentoxide is 2%-4% of the weight of the trifunctional catalyst, and the rest of the trifunctional catalyst is absorbent.