Oxidative deep desulfurization was considered as one of the most promising non-HDS process.In the present work,thiophene selective oxidation was studied over TS-1 using hydrogen peroxide as oxidant in model gasoline.The oxidation of thiophene was investigated in the presence of hydrocarbons.Effect of these typical hydrocarbons on selective oxidation of thiophene can be obtained: n-octane and cyclohexane have no effect on removal of thiophene from model gasoline.Benzene also has no effect on final thiophene removal from model gasoline,but has a little effect on initial removal rate of thiophene.n-Octene will seriously influence the removal of thiophene from model gasoline.Therefore further study is required to improve the selectivity of TS-1 in model gasoline containing alkene.Loading silver or copper on TS-1 will increase its selectivity in thiophene oxidative removal from model gasoline containing alkene.The best amount of silver or copper on TS-1 is 0.05% or 0.07%,respectively.
