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Received February 2, 2010
Accepted March 4, 2010
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IR study on the reduction of NO and NO2 by hydrazine monohydrate over Fe-BEA zeolite
School of Applied Chemical Engineering and the Center for Functional Nano Fine Chemicals, Chonnam National University, Gwangju 500-757, Korea 1Heesung Catalyst Corporation, 1251-6 Jungwang-dong, Shihung, Gyeonggi 429-450, Korea
gseo@chonnam.ac.kr
Korean Journal of Chemical Engineering, November 2010, 27(6), 1738-1743(6), 10.1007/s11814-010-0287-3
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Abstract
The adsorption of NO and NO2 and their subsequent reduction by hydrazine monohydrate (HDM) over Fe-BEA zeolite were investigated using an FT-IR spectrophotometer equipped with an in-situ cell. Although NO and NO2 molecules were adsorbed on Fe species in an unaltered state, some of them reacted with oxygen atoms, resulting in the adsorption of NO2 and NO3-, respectively. The reducing species that had originated from HDM on Fe-BEA selectively_x000D_
reduced these molecules to N2, while a small amount of N2O was formed in the reduction of NO by HDM. NO and NO2 were rapidly reduced by HDM through their adsorbed state even at 150 ℃, and Fe species were required for their adsorption and for the formation of reducing species from HDM.
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References
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