TS-1/H2O2催化模拟汽油中噻吩的选择氧化研究

随着环境法规的日益严格,世界各国对于燃料中硫质量分数做了新的规定,要求车用燃料的硫控制在10×10-6~50×10-6,燃料电池硫的质量分数控制为(1×10-6。要达到这样高的脱硫深度,传统的脱硫方法面临着极大的挑战1]。因此,其他非HDS脱硫方法受到研究者关注,其中氧化萃取深度脱硫

Selective oxidation of thiophene from model gasoline over TS-1/H2O2

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.