Oxidation Reactivities of Organic Sulfur Compounds in Fuel Oil Using Immobilized Heteropoly Acid as Catalyst

Heteropoly acid of Keggin structure phosphotungstic(HPW)and phosphomolybdic(HPMo) were chemically anchored to the modified SBA-15 channel.The materials were used as catalyst for oxidative desulfurization of organic sulfur compounds including benzothiophene(BT),dibenzothiophene(DBT)and 4,6-dimethydibenzothiophene(4,6-DMDBT).The experimental results show that the catalysts are efficient and reusable,the catalytic activity is hardly reduced even in the 5th cycle of use.