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Received October 14, 2013
Accepted December 8, 2013
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Study of SO2 oxidation over V2O5/activated carbon catalyst using in situ diffuse reflectance infrared Fourier transformation spectroscopy
1State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China 2University of Chinese Academy of Sciences, Beijing 100049, P. R. China 3, China
zghuang@sxicc.ac.cn
Korean Journal of Chemical Engineering, May 2014, 31(5), 794-800(7), 10.1007/s11814-013-0270-x
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Abstract
The SO2 oxidation over V2O5/AC catalyst was studied using an in situ diffuse reflectance infrared Fourier transformation spectroscopy technique at 120 oC. Results reveal that the surface oxygen groups could neither act as active sites for SO2 oxidation nor supply the oxygen needed for VV_x000D_
↔VIV redox cycle. The vanadia species and gas phase oxygen are essential for SO2 oxidation. During SO2 oxidation over V2O5/AC, the surface hydroxyl groups involve in the formation of sulfate species. The role of water vapor in flue gas might be to supplement the hydroxyl groups_x000D_
consumed so that the SO2 oxidation could continue.
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