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Investigation of Cu- and Fe-Doped CsH3PMo11VO40 Heteropoly Compounds for the Selective Oxidation of Methacrolein to Methacrylic Acid
Zhang, Heng; Yan, Ruiyi; Yang, Li; Diao, Yanyan; Wang, Lei; Zhang, Suojiang
2013-03-27
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume52Issue:12Pages:4484-4490
AbstractSelective oxidation of methacrolein to methacrylic acid was carried out over Cu- and Fe-doped acidic cesium salts of molybdovanadophosphoric acids. The influences of preparation conditions on the structure and catalytic properties of the catalysts were investigated. Results showed that the addition method of NH4+ in the precursors greatly affected the structure of the calcined catalysts. When MoO3, V2O5, and H3PO4 were used to prepare the parent heteropoly acid, which further reacted with the mixed metal nitrates to form the Keggin-type precursor, the addition of ammonia promoted the formation of single-phase cubic secondary structure of the precursor. After being calcined at 360 degrees C for 12 h, ammonium ions totally decomposed, and vanadium ions were partially expelled from the primary Keggin units. The catalytically less active MoO3 phase, observed in the sample calcined in air, did not exist in the sample calcined in N-2. When NH4VO3 was used to replace V2O5 and ammonia to prepare the precursor, the ammonium exhibited higher thermal stability, and the calcination atmosphere had almost no effect on the phase composition of the calcined catalysts. It is also found that Cu and Fe as counterions can improve the redox property and thereby enhance the performance of the catalyst.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordISOBUTYRIC ACID ; CATALYTIC PERFORMANCE ; ISOBUTANE OXIDATION ; METHANOL OXIDATION ; REDOX PROPERTIES ; KEGGIN ; STABILITY ; DEHYDROGENATION ; DEHYDRATION ; CONVERSION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000317031700014
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13482
Collection研究所(批量导入)
AffiliationChinese 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
Recommended Citation
GB/T 7714
Zhang, Heng,Yan, Ruiyi,Yang, Li,et al. Investigation of Cu- and Fe-Doped CsH3PMo11VO40 Heteropoly Compounds for the Selective Oxidation of Methacrolein to Methacrylic Acid[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(12):4484-4490.
APA Zhang, Heng,Yan, Ruiyi,Yang, Li,Diao, Yanyan,Wang, Lei,&Zhang, Suojiang.(2013).Investigation of Cu- and Fe-Doped CsH3PMo11VO40 Heteropoly Compounds for the Selective Oxidation of Methacrolein to Methacrylic Acid.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(12),4484-4490.
MLA Zhang, Heng,et al."Investigation of Cu- and Fe-Doped CsH3PMo11VO40 Heteropoly Compounds for the Selective Oxidation of Methacrolein to Methacrylic Acid".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.12(2013):4484-4490.
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