期刊
APPLIED SURFACE SCIENCE
卷 378, 期 -, 页码 513-518出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2016.03.211
关键词
Ce/TiO2; SCR; Cl; Deactivation; TPD; DRIFT
类别
资金
- Natural Science Foundation of Shanghai, China [21546014]
- Natural Science Foundation of Shanghai [14ZR1417800]
The poisoning mechanism of Cl on Ce/TiO2 catalyst was investigated based on temperature programmed desorption (TPD) and the in situ diffuse reflectance infrared transform spectroscopy (DRIFT) studies. The results of NH3-TPD and NO-TPD indicated that the addition of Cl on Ce/TiO2 catalyst would inhibit the adsorption of NH3 species and NOx species on it. As can be seen from the results of in situ DRIFT study, the NH3-SCR reaction over Ce/TiO2 and Ce/TiO2-Cl were all followed both the Eley-Rideal mechanism and the Langmuir-Hinshelwood mechanism. And the decreased adsorption ability of NH3 species and NOx species on the surface of Ce/TiO2-Cl should be mainly responsible for its low SCR activity. (C) 2016 Elsevier B.V. All rights reserved.
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