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Facile synthesis of efficient pentaethylenehexamine-phosphotungstic acid heterogeneous catalysts for oxidative desulfurization

查看全文 作　　者：Chongfu [1,2,3]Wu;Changsheng [1,2,3]Chen;Zhaoyang [1,2,3]Qi;Jie [1,2,3]Chen;Qinglian [1,2,3]Wang;Changshen [1,2,3]Ye;Ting [1,2,3]Qiu 高影响力作者 机构地区：[1]College of Chemical Engineering,Fuzhou University,Fuzhou 350108,China;[2]Qingyuan Innovation Laboratory,Quanzhou 362801,China;[3]Engineering Research Center of Reactive Distillation,Fujian Province Higher Education Institutes,Fuzhou 350108,China高影响力机构 出　　处：《Chinese Journal of Chemical Engineering》索引2023年第63卷第11期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(22378065,22278077);the Fujian Province Department of Science&Technology,China(2019YZ017001)。 摘　　要：The ultra-deep desulfurization of oil needs to be solved urgently due to various problems,including environmental pollution and environmental protection requirements.Oxidative desulfurization(ODS)was considered to be the most promising technology.The facile synthesis of highly efficient and stable HPW-based heterogeneous catalysts for oxidative desulfurization is still a challenging task.In this paper,pentamethylene hexamine(PEHA)and phosphotungstic acid(HPW)were combined by a simple one-step method to prepare a heterogeneous catalyst of PEHA-HPW for the production of ultra-deep desulfurization fuel oil.The composite material exhibited excellent catalytic activity and high recyclability,which could reach a 100% dibenzothiophene(DBT)removal rate in 30 min and be recycled at least 5 times.Experiments and DFT simulations were used to better examine the ODS mechanism of PEHA-HPW.It was proved that the rich amino groups on the surface of PEHA-HPW play a crucial role.This work provides a simple and feasible way for the manufacture of efficient HPW-based catalysts. 关 键 词：OXIDATION CATALYST DESULFURIZATION FUEL Phosphotungstic acid AMINO
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