Aerobic oxidative desulfurization via magnetic mesoporous silica-supported tungsten oxide catalysts  

作　　者：Wei Jiang Xiang Gao Lei Dong Jin Xiao Lin-Hua Zhu Guang-Ying Chen Su-Hang Xun Chong Peng Wen-Shuai Zhu Hua-Ming Li 

机构地区：[1]Institute for Energy Research,School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,People’s Republic of China [2]School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,People’s Republic of China [3]School of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,Hainan,People’s Republic of China [4]Dalian Research Institute of Petroleum and Petrochemicals,SINOPEC,Nankai Road 96 of Lushunkou City,Dalian 116045,People’s Republic of China

出　　处：《Petroleum Science》2020年第5期1422-1431,共10页石油科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21978119,21576122,and 21766007);a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions;the support of the Jiangsu Government Scholarship for oversea studies。

摘　　要：It is usually difficult to remove dibenzothiophenes from diesel fuels by oxidation with molecular oxygen as an oxidant.In the study,tungsten oxide was supported on magnetic mesoporous silica by calcination to form a magnetically separable catalyst for oxidative desulfurization of diesel fuel.By tuning different calcining temperatures,the catalyst calcined at 500℃showed a high catalytic activity with molecular oxygen as the oxidant.Under optimal reaction conditions,the sulfur removal of DBT reached 99.9%at 120℃after 8 h.Furthermore,the removals of 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene could also get up to 98.2%and 92.3%under the same conditions.The reaction mechanism was explored by selective quenching experiments and FT-IR spectra.

关 键 词：Oxidative desulfurization Molecular oxygen Magnetic separation Mesoporous structure Tungsten oxide 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]