Abstract
Utilization of CO2 as a soft oxidant in the oxidative dehydrogenation of ethylbenzene to styrene, a remarkable V2O5–Sb2O5–CeO2/TiO2–ZrO2 catalyst has been accomplished. Preparation of TiO2–ZrO2 support by co-precipitation followed by a single step deposition of V and Ce and Sb as stabilizers yielded a highly active and selective catalyst. Acid–base and redox properties including sustained stability of active species (V5+) are responsible for high activity of V2O5–Sb2O5–CeO2/TiO2–ZrO2 catalyst. The redox cycle is related to the dispersed V5+ and lattice reduced vanadium site in the VSbO4 phase. The antimony oxide inhibits the easy redox cycle between different vanadia species.
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Acknowledgments
This work is funded by Saudi Arabia Basic Industries Corporation, Kingdom of Saudi Arabia National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 20090083525) and INHA University, Korea.
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Burri, A., Jiang, N., Ji, M. et al. Oxidative Dehydrogenation of Ethylbenzene to Styrene with CO2 Over V2O5–Sb2O5–CeO2/TiO2–ZrO2 Catalysts. Top Catal 56, 1724–1730 (2013). https://doi.org/10.1007/s11244-013-0108-0
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DOI: https://doi.org/10.1007/s11244-013-0108-0