Oxidative dehydrogenation of ethane to ethylene over V2O5/Nb2O5 catalysts |
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| Affiliation: | 1. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a 18059 Rostock, Germany;2. Inorganic & Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad-500 007, India;1. College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, PR China;2. Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, PR China;1. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;2. Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education), Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | V2O5/Nb2O5 catalysts with various V2O5 contents were prepared by impregnation and characterized by various techniques in detail. Oxidative dehydrogenation of ethane was carried out in a fixed bed quartz reactor at 500–600 °C. XPS analysis indicated a clear enrichment of vanadium on the near-surface-region and UV–vis diffuse reflectance spectroscopy revealed the nature of VOx structures formed. 10 wt.% V2O5/Nb2O5 catalyst has displayed the best performance (X = 28%, S = 38% at 600 °C) due to enrichment of vanadium in the near-surface-region and formation of optimum amount of monomeric/oligomeric VOx species. |
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