Porous phosphomolybdate-based poly(ionic liquid) hybrids with reversible water absorption for enhancement of oxidative desulfurization
摘要:A novel porous phosphomolybdate-based poly(ionic liquid) catalyst containing 70 % water (PDIM-PMo-W70%) was assembled with H3PMo12O40 (HPMo) and poly-[3-dodecyl-1-vinylimidazolium] bromine (PDIMBr), and characterized by FT-IR, UV–vis, XRD, XPS, Contact angle test, SEM, TEM, TGA, and N2 adsorption–desorption analysis. The turnover frequency (TOF) value of PDIM-PMo-W70% for (dibenzothiophene) DBT removal can reach 41.15 h?1 at 50 °C, which is 35.47 and 9.92 times higher than that of HPMo and PDIM-PMo. The catalyst could be recycled at least five times without a significant change in catalytic activity. The water content of the catalyst, reaction temperature, the molar ratio of H2O2/S, catalyst dosage and different sulfur-containing compounds upon oxidative desulfurization (ODS) performance were studied in detail. Most notably, the effects of water on the microstructure and catalytic activity of polyoxometalate-based poly(ionic liquid) were systematically investigated for the first time. As well as the water absorption behavior on the catalyst was reversible, and the dehydrated catalysts after soaking in water could still show excellent catalytic activity. In addition, a reasonable reaction mechanism was proposed with the aid of EPR analysis and radical quenching experiments. ? 2022 Elsevier Ltd
ISSN号:1556-5068
卷、期、页:333卷
发表日期:2023-02-01
影响因子:6.609000
期刊分区(SCI为中科院分区):一区
收录情况:EI(工程索引)
发表期刊名称:Fuel
参与作者:Mao, Shao-Xu,Zhou, Qi-Hang,Guo, Hui-Li,Du, Ming,Li, Hua-Ming,Pang, Jing-Yu,Dang, Dong-Bin,Bai, Yan
第一作者:朱文帅
论文类型:期刊论文
论文概要:Mao, Shao-Xu,Zhou, Qi-Hang,Guo, Hui-Li,Du, Ming,朱文帅,Li, Hua-Ming,Pang, Jing-Yu,Dang, Dong-Bin,Bai, Yan,Porous phosphomolybdate-based poly(ionic liquid) hybrids with reversible water absorption for enhancement of oxidative desulfurization,Fuel,2023,333卷
论文题目:Porous phosphomolybdate-based poly(ionic liquid) hybrids with reversible water absorption for enhancement of oxidative desulfurization