期刊
CATALYSIS COMMUNICATIONS
卷 8, 期 3, 页码 589-592出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2006.05.015
关键词
non-thermal plasma; selective catalytic reduction; lean burn; NOx; Ag/gamma-Al2O3; propene
SO2 strongly decreased the catalytic activities of low loading Ag/Al2O3 below 500 degrees C in selective catalytic reduction (SCR) of NOx by propene with or without the assistance of non-thermal plasma (NTP), which was mainly attributed to the competition between SO2 and NO. By controlling the loadings of Ag and Ag+ over alumina, the resistance of SO2 was remarkably enhanced between 400 degrees C and 500 degrees C in thermal SCR. In the NTP-assisted SCR, most of the NOx conversions were also apparently recovered from 250 degrees C to 500 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
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