Alumina-supported vanadium oxide, VOx/Al2O 3, and binary vanadium-antimony oxides, VSbOx/Al 2O3, have been tested in the ethylbenzene dehydrogenation with carbon dioxide and characterized by SBET, X-ray diffraction, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction and CO2 pulse methods. VSbOx/Al2O3 exhibited enhanced catalytic activity and especially on-stream stability compared to VOx/Al2O3 catalyst. Incorporation of antimony into VOx/Al2O3 increased dispersion of active VOx species, enhanced redox properties of the systems and formed a new mixed vanadium-antimony oxide phase in the most catalytically efficient V0.43Sb0.57Ox/Al 2O3 system.
Bibliographical noteFunding Information:
This work was performed for the Greenhouse Gas Research Center, one of the Critical Technology-21 Programs, funded by the Ministry of Science and Technology of Korea (MOST). VPV thanks the MOST for the visiting scientist fellowship. We thank Daebo Industries Co. (Korea) for financial support.
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