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Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde
Yang, Dan1,2; Wang, Gang1,2; Wu, Hui2; Guo, Xinpeng2; Zhang, Suojiang2; Li, Zengxi1; Li, Chunshan2
2018-10-15
Source PublicationCATALYSIS TODAY
ISSN0920-5861
Volume316Pages:122-128
Abstract

Improvement in activity for the Zr doped VPO catalyst appears to be a general observation in aldol condensation of methyl acetate and formaldehyde to methyl acrylate. The deactivation behavior significantly differs between VPO and VPO-Zr catalysts. In this work, the deactivation/reactivation behavior and carbon formation in aldol condensation on VPO and VPO-Zr catalysts were investigated. After partial deactivation of the conversion of methyl acetate and formaldehyde to methyl acrylate with a fixed-bed reactor, the deactivated catalysts were fractionated from the reactor. The samples were then analyzed by spectroscopic techniques, gas adsorption measurements and thermogravimetry. The VPO-Zr catalyst showed differences in deactivation/reactivation behavior from the VPO catalyst under same reaction conditions. This finding could be partially ascribed to different coke locations in the deactivated catalysts with varied porosity. The I-V (4+) /I-V (5+) ratio of V atom remarkably differed among fresh, used, and refreshed catalysts, which could be a key factor affecting catalyst deactivation. The relations of carbon formation and reaction time were fitted by empirical Voorhies equation over VPO and VPO-Zr catalysts.

KeywordVpo Vpo-zr Aldol Condensation Deactivation Behavior Carbon Formation
DOI10.1016/j.cattod.2018.06.019
Language英语
WOS KeywordPhosphorus Oxide Catalysts ; N-butane Oxidation ; Vanadium Pyrophosphate Oxides ; Acrylic-acid ; Acetic-acid ; Maleic-anhydride ; Methacrylic-acid ; Propionic-acid ; Coke Formation ; Propane
Funding ProjectNational Science Fund for Excellent Young Scholars[21422607] ; National Natural Science Foundation of China[21676270] ; NSFC-Key Projects of Shanxi Coal Based Low Carbon Joint Fundation[U1610222] ; National Key Projects for Fundamental Research and Development of China[2016YFB0601303] ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Key Laboratory of Applied Surface and Colloid Chemistry (Shanxi Normal University)
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
Funding OrganizationNational Science Fund for Excellent Young Scholars ; National Natural Science Foundation of China ; NSFC-Key Projects of Shanxi Coal Based Low Carbon Joint Fundation ; National Key Projects for Fundamental Research and Development of China ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Key Laboratory of Applied Surface and Colloid Chemistry (Shanxi Normal University)
WOS IDWOS:000443966900017
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25922
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Chunshan
Affiliation1.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Natl Key Lab Clean & Efficient Coking Technol, Beijing Key Lab Ion Liquids Clean Proc,Coll Chem, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yang, Dan,Wang, Gang,Wu, Hui,et al. Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde[J]. CATALYSIS TODAY,2018,316:122-128.
APA Yang, Dan.,Wang, Gang.,Wu, Hui.,Guo, Xinpeng.,Zhang, Suojiang.,...&Li, Chunshan.(2018).Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde.CATALYSIS TODAY,316,122-128.
MLA Yang, Dan,et al."Deactivation behavior on VPO and VPO-Zr catalysts in the aldol condensation of methyl acetate and formaldehyde".CATALYSIS TODAY 316(2018):122-128.
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