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Catalytic behavior of decomposed molybdophosphoric acid supported on alumina for oxidative dehydrogenation of ethane to ethylene |
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| Authors: | A. Sri Hari Kumar V. N. Kalevaru A. Qiao A. Alshammari N. Lingaiah Ch. Sailu P. S. Sai Prasad A. Martin |
| Affiliation: | 1. Inorganic & Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad, 500 607, India 2. Leibniz-Institut für Katalyse e.V. an der Universit?t Rostock, 18059, Rostock, Germany 3. National Nanotechnology Research Center, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia 4. Univ. College of Technology, Osmania University, Hyderabad, 500 013, India |
| Abstract: | Oxidative dehydrogenation of ethane (ODHE) to ethylene was investigated over a series of alumina supported molybdophosphoric acid (MPA) catalysts. The MPA was transformed into surface Mo oxides on Al2O3 when subjected to calcination at 600°C. The catalysts were characterized by N2-adsorption, XRD, FT-IR spectroscopy and TPR techniques. The results showed that MPA loading and the source of Mo precursor had a clear influence on the catalytic performance. The evaluation of the catalysts for ODHE at temperatures between 450 and 550°C revealed superior ethane conversion (X～24%) and ethylene selectivity (S = ca. 65%) over 20 wt % MPA/Al2O3 catalyst. The transformation of MPA into finely dispersed Mo oxides on Al2O3 appeared to be responsible for this improved performance. |
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