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Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic acid
Zheng, Yanxia1,2; Zhang, Heng2,3; Wang, Lei2; Zhang, Suojiang2; Wang, Shaojun1
2016-03-01
Source PublicationFRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
ISSN2095-0179
Volume10Issue:1Pages:139-146
Abstract

Heteropoly compounds with the general formula Cs1M0.5x+H3-0.5xP1.2Mo11VO40 (M = Fe, Co, Ni, Cu or Zn) and Cs1CuyH3-'2yP1.2Mo11VO40 (y = 0.1, 0.3 or 0.7) were synthesized and then used as catalysts for the selective oxidation of methacrolein to methacrylic acid. The effects of the transition metals on the structure and activity of the catalysts were investigated. FTIR spectra showed that the transition metal-doped catalysts maintained the Keggin structure of the undoped catalysts. X-ray diffraction results indicated that before calcination, the catalysts doped with Fe and Cu had cubic secondary structures, while the catalysts doped with Co, Ni or Zn had both triclinic and cubic phases and the Co-doped catalyst had the highest content of the triclinic form. Thermal treatment can decrease the content of the triclinic phase. NH3 temperature-programmed desorption and H-2 temperature-programmed reduction results showed that the transition metals changed the acid and redox properties of the catalysts. The addition of Fe or Cu had positive effects on the activities of the catalyst which is due to the improvement of the electron transfer between the Fe or Cu and the Mo. The effects of the copper content on structure and catalytic activity were also investigated. The Cs1Cu0.3H2P1.2Mo11VO40 catalyst had the best performance for the selective oxidation of methacrolein to methacrylic acid.

KeywordHeteropoly Compounds Transition Metals Selective Oxidation Methacrolein
SubtypeArticle
Subject AreaEngineering, Chemical ; Engineering
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11705-015-1548-9
URL查看原文
Indexed BySCI
Language英语
WOS KeywordKeggin-type Heteropolyacids ; Phosphomolybdic Acid ; Isobutane Oxidation ; Vox/ceo2 Catalysts ; Molybdovanadophosphoric Acids ; 12-molybdophosphoric Acid ; Redox Properties ; Isobutyric Acid ; Alkali Salts ; Dehydrogenation
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationChinese Academy of Sciences(XDA07070600) ; National Natural Science Foundation of China(21206179 ; 21127011)
WOS IDWOS:000371615000012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20683
Collection研究所(批量导入)
Corresponding AuthorWang, Shaojun
Affiliation1.Dalian Polytech Univ, Sch Light Ind & Chem Engn, Dalian 116034, Peoples R China
2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, State Key Lab Multiphase Complex Syst,Key Lab Gre, Beijing 100190, Peoples R China
3.Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Yanxia,Zhang, Heng,Wang, Lei,et al. Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic acid[J]. FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,2016,10(1):139-146.
APA Zheng, Yanxia,Zhang, Heng,Wang, Lei,Zhang, Suojiang,&Wang, Shaojun.(2016).Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic acid.FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING,10(1),139-146.
MLA Zheng, Yanxia,et al."Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic acid".FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 10.1(2016):139-146.
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