With the development of economic and society, the dosage of fuel raise dramatically. More attentions pay to the harm brought by the combustion of fuel sulfides and much lower standard of sulfur fuel demanded by the environmental policy. The deep desulfurization for fuel becomes a stern problem for the petroleum industry in our country. At present, hydrodesulfurization is still the main desulfurization for the fuel. So further study of the mechanism of desulfurization of active sites and supprot of hydrodesu...