Effect of Bi promoter on the performances of selective oxidation of isobutane to methacrolein over MoVO/AlPO_4 catalysts

The effects of Bi on the catalytic performance of selective oxidation of isobutane to methacrolein over MoVO/AlPO4 catalyst were investigated by XRD, FT-Raman, XPS, UV-vis DRS techniques. The results show that the addition of Bi component into the MoVO/AlPO4 catalyst obviously improves the catalytic...

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Published in天然气化学杂志：英文版 Vol. 21; no. 2; pp. 165 - 169
Main Author Xitao Wang Mei Li Fen Wang Shunhe Zhong Shi Jiang Sihe Wang
Format Journal Article
LanguageEnglish
Published 01.03.2012
Subjects
RS技术
X射线光电子能谱
催化剂
催化性能
异丁烷
氧化性能
紫外可见
选择性氧化
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Summary:The effects of Bi on the catalytic performance of selective oxidation of isobutane to methacrolein over MoVO/AlPO4 catalyst were investigated by XRD, FT-Raman, XPS, UV-vis DRS techniques. The results show that the addition of Bi component into the MoVO/AlPO4 catalyst obviously improves the catalytic performance, and the selectivity to methacrolein can increase from 14.2% to 45.1% with the increase of Bi/V molar ratio from 0 to 1. Combining the characterization results with the reaction evaluation, it is concluded that the catalytic activities of the MoV0.3Bix/AlPO4 catalysts are related to the crystalline phase composition and the dispersion of molybdenum and vanadium oxides species in general, and also to the V5＋/V4＋ molar ratio on the surface in particular.
Bibliography:The effects of Bi on the catalytic performance of selective oxidation of isobutane to methacrolein over MoVO/AlPO4 catalyst were investigated by XRD, FT-Raman, XPS, UV-vis DRS techniques. The results show that the addition of Bi component into the MoVO/AlPO4 catalyst obviously improves the catalytic performance, and the selectivity to methacrolein can increase from 14.2% to 45.1% with the increase of Bi/V molar ratio from 0 to 1. Combining the characterization results with the reaction evaluation, it is concluded that the catalytic activities of the MoV0.3Bix/AlPO4 catalysts are related to the crystalline phase composition and the dispersion of molybdenum and vanadium oxides species in general, and also to the V5＋/V4＋ molar ratio on the surface in particular.
sol-gel method; selective oxidation of isobutene; methacrolein; MoVBiO/AlPO4 catalyst
Xitao Wang , Mei Li, Fen Wang, Shunhe Zhong, Shi Jiang, Sihe Wang（ 1. Tianjin Key Laboratory of Applied Catalysis Science and Technology, College of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 2. Nature Gas Company, Dagang Oil Field, Tianjin 300280, China ）
21-1484/O4
ISSN:1003-9953
DOI:10.1016/S1003-9953(11)60349-6