Journal
CATALYSIS COMMUNICATIONS
Volume 5, Issue 1, Pages 35-39Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2003.11.006
Keywords
glow discharge; plasma; Pt/NaZSM-5; NO reduction; methane
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A novel catalyst preparation for NO reduction by CH4 has been conducted using a glow discharge plasma treatment followed by calcinations thermally. Such plasma prepared Pt/NaZSM-5 catalyst exhibits a high dispersion of metal active species. A remarkable improvement in the activity and stability, compared to the catalysts prepared conventionally, has been achieved. Especially, an excellent low temperature activity over the plasma-treated Pt/NaZSM-5 catalyst has been obtained. For example, the conventional 0.1 wt% Pt/NaZSM-5 catalyst shows no activity at temperatures below 673 K, while at 673 K, the NO conversion to nitrogen reaches 61.3% over the plasma-treated 0.1 wt% Pt/NaZSM-5 catalyst. The initiated temperature for the plasma-treated 0.1 wt% Pt/ NaZSM-5 catalyst can be as low as 548 K. (C) 2003 Elsevier B.V. All rights reserved.
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