Journal
FUEL
Volume 169, Issue -, Pages 87-92Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2015.12.009
Keywords
Mn/TiO2 catalyst; SCR; Na; Sb; Resistance; Promotion mechanism
Categories
Funding
- Natural Science Foundation of China [21546014]
- Natural Science Foundation of Shanghai, China [14ZR1417800]
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Na has a serious deactivation effect on Mn/TiO2 catalyst for selective catalytic reduction of NO with NH3. In this study, it was found that Sb had a promotion effect on the Na resistance of MnOx/TiO2 catalyst. Then the promotion mechanism was investigated based on the characterization results of BET, XRD, H-2-TPR, NH3-TPD, XPS and in situ DRIFT. The results of H-2-TPR and NH3-TPD showed that the addition of Sb on MnOx/TiO2 could enhance the redox ability and surface acidity respectively, and the results of DRIFT indicated that the addition of Sb on MnOx/TiO2 could generate strong Lewis acid sites on the catalyst surface for NH3 adsorption. Therefore, the doping of Sb has a promotion effect on the Na resistance of Mn/TiO2 catalyst. (C) 2015 Elsevier Ltd. All rights reserved.
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