文献类型：期刊文献

英文题名：Deep oxidative desulfurization catalyzed by an ionic liquid-type peroxotungsten catalystDeep oxidative desulfurization catalyzed by an ionic liquid-type peroxotungsten catalyst

作者：Chen, Jizhong[1];Chen, Chen[1];Zhang, Ran[1];Guo, Li[1];Hua, Li[1];Chen, Angjun[1];Xiu, Yuhe[1];Liu, Xuerui[1];Hou, Zhenshan[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：33

起止页码：25904

外文期刊名：RSC ADVANCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000351494800036)】；

基金：The authors are grateful for support from the National Natural Science Foundation of China (21373082), Innovation Program of Shanghai Municipal Education Commission (15ZZ031), and the Fundamental Research Funds for the Central Universities.

语种：英文

摘要：New peroxotungsten anion-based ionic liquid-type catalysts were synthesized and characterized using NMR, IR, TG, etc. Then, these salts were used as catalysts for the deep desulfurization of model oil containing dibenzothiophene (DBT) with H2O2 as an oxidant. The effects of the temperature, H2O2/DBT molar ratio, and catalyst loading on the desulfurization activity have been investigated in detail. The present catalysts showed excellent desulfurization activity under solvent-free and mild reaction conditions. Moreover, this catalyst could be recycled at least ten times without any decrease in activity. It was found that the H-bonding interaction between the H-2-proton in imidazolium and the basic S atom in the DBT molecule played a very important role in enhancing the catalytic activity. On the basis of the activity measurements and characterization of the catalyst, the reaction mechanism for the oxidative desulfurization process has been suggested.