Promoting effect of CeO2 on NOx reduction with propene over SnO2/Al2O3 catalyst studied with in situ FT-IR spectroscopy
The mechanistic cause of the promoting effect of CeO2 on the activity of SnO2/Al2O3 catalyst for the SCR of NO (x) by propene was investigated using X-ray photoelectron spectra (XPS) and in situ Fourier transform infrared (FT-IR) spectroscopy. FT-IR measurements have revealed that the role of CeO2 on the CeO2-SnO2/Al2O3 catalyst is to contribute to the formation of formate, acetate and nitrate species, and to promote the reaction between nitrates and hydrocarbon-derived species to form isocyanate (-NCO), which is a reaction intermediate for NO (x) reduction.
- Publisher
- SPRINGER
- Issue Date
- 2008-01
- Language
- English
- Article Type
- Article
- Keywords
BURN ENGINE EXHAUST; SELECTIVE REDUCTION; HIGHER HYDROCARBONS; PT/AL2O3 CATALYSTS; ALUMINA CATALYSTS; ZEOLITE CATALYSTS; NITRIC-OXIDE; MECHANISM; PT/ZSM-5; OXYGEN
- Citation
CATALYSIS LETTERS, v.120, no.1-2, pp.143 - 147
- ISSN
- 1011-372X
- Appears in Collection
- CBE-Journal Papers(저널논문)
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