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Cesium salts supported heteropoly acid for oxidation of methacrolein to methacrylic acid
Zhou, Lilong1,2; Wang, Lei1; Diao, Yanyan1; Yan, Ruiyi1; Zhang, Suojiang1
2017-05-01
发表期刊MOLECULAR CATALYSIS
ISSN2468-8231
卷号433页码:153-161
摘要

A series of novel heteropoly catalysts (H4PMo11VO40/Cs4PMo11VO40) with core shell structure were designed and synthesized for effective oxidation of methacrolein to methacrylic acid. The effects of H4PMo11VO40 supporting amount on catalytic properties were investigated. With the hydrothermal treatment temperature increased from 25 to 180 degrees C, the surface area of Cs4PMo11VO40 decreased from 123.6 to 7.7 m(2) g(-1), while the acidity and oxidation susceptibility of Cs4PMo11VO40 were enhanced due to its re-crystallization. The XRD results showed that the crystalline form of H4PMo11VO40 changed from triclinic to cubic form because of the guidance effect of Cs4PMo11VO40. BET, NH3-TPD and XPS results indicated that compared with bulk H4PMo11VO40, surface area and oxidation susceptibility of the supported one increased significantly, and the acidity decreased. The sui thickness of H4PMo11VO40 layer on Cs4PMo11VO40 was a key point to tune the surface area, oxidation susceptibility and acidity of catalysts. At 310 degrees C, the methacrolein conversion and methacrylic acid selectivity on the optimum supported catalyst were more than 85% and 75%, respectively, which were much better than those on bulk H4PMo11VO40 (39% and 46%), Cs4PMo11VO40 (15.6% and 0%) and Cs2.6H1.4PMo11VO40 (99.9% and 36.5%). (C) 2017 Elsevier B.V. All rights reserved.

关键词Catalysts Polyoxometalate Methacrolein Selective Oxidation Methacrylic Acid
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.mcat.2017.01.023
收录类别SCI
语种英语
关键词[WOS]Selective Oxidation ; 12-molybdophosphoric Acid ; Acrolein Oxidation ; Catalysts ; Isobutane ; Silica ; Stability ; Mcm-41
WOS研究方向Chemistry
WOS类目Chemistry, Physical
项目资助者National Key Research and Development Program of China(2016YFB0601303) ; Chinese Academy of Sciences(XDA07070600) ; National Natural Science Funds for Distinguished Young Scholar(21425625) ; National Natural Science Foundation of China(21476239)
WOS记录号WOS:000400562600020
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22844
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhou, Lilong,Wang, Lei,Diao, Yanyan,et al. Cesium salts supported heteropoly acid for oxidation of methacrolein to methacrylic acid[J]. MOLECULAR CATALYSIS,2017,433:153-161.
APA Zhou, Lilong,Wang, Lei,Diao, Yanyan,Yan, Ruiyi,&Zhang, Suojiang.(2017).Cesium salts supported heteropoly acid for oxidation of methacrolein to methacrylic acid.MOLECULAR CATALYSIS,433,153-161.
MLA Zhou, Lilong,et al."Cesium salts supported heteropoly acid for oxidation of methacrolein to methacrylic acid".MOLECULAR CATALYSIS 433(2017):153-161.
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