A study of the mechanism of iron-based sulfate catalyst for selective catalytic reduction of NO with NH3
| Autor: | Yufeng Zhao, Bo Zhao, Changhe Chen, Yuqun Zhuo, Xuchang Xu |
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| Rok vydání: | 2011 |
| Předmět: |
Reaction mechanism
Diffuse reflectance infrared fourier transform Renewable Energy Sustainability and the Environment General Chemical Engineering Inorganic chemistry Selective catalytic reduction Catalysis chemistry.chemical_compound Ammonia X-ray photoelectron spectroscopy chemistry Sulfate Waste Management and Disposal Stoichiometry |
| Zdroj: | Asia-Pacific Journal of Chemical Engineering. 7:581-589 |
| ISSN: | 1932-2135 |
| Popis: | The catalytic activity of iron-based sulfate catalyst in selective catalytic reduction (SCR) of NO with NH3 in the presence/absence of O2 was investigated. Powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) are applied to study the iron-based sulfate catalyst. The iron-based sulfate catalyst shows considerable catalytic activity for the SCR reaction at 350–450 °C in the presence of O2. NO and NH3 reacted with the stoichiometry ratio of 1:1 over iron-based sulfate catalysts in the absence of O2 at 350 °C. By the comparison of NO conversion in the absence/presence of O2, an SCR reaction mechanism that included NH3 oxidation by Fe3+ and the re-oxidation of Fe2+ is inferred on the basis of the results obtained from XRD, XPS, and DRIFT. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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