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977601 
Journal Article 
Ruthenium-exchanged US-Y Zeolites for NO reduction by CO 
Labhsetwar, N; Dhakad, M; Rayalu, S; Minamino, H; Wanjari, S; Kumar, S; Doggali, P; Tijare, S; Valechha, D; Watanabe, A; Mitsuhashi, T; Haneda, H 
2008 
Yes 
Current Science
ISSN: 0011-3891
EISSN: 0011-3905 
95 
6 
778-782 
English 
WOS:000260084600028 
Ruthenium-exchanged H and Na forms of ultra stable-Y (US-Y) zeolite-based catalysts have been prepared by ion-exchange method. These catalysts have been characterized in detail, and evaluated for their catalytic activity towards NO-CO reaction. Highest catalytic activity was shown by 3 wt% Ru-Na-US-Y and almost 100% NO conversion was observed at 260 degrees C under stoichiometric conditions. The activity aears to be a factor of ruthenium content, while Na also shows a promotional effect for this reaction, possibly through donation of electron. High hydrothermal stability of these catalysts and their compatibility with commonly used cordierite honeycomb supports make them potential candidates for various environmental applications. 
Catalyst; carbon-monoxide; ion-exchange method; nitric oxide; ultra stable-zeolite;SUPPORTED RHODIUM CATALYSTS; ALUMINA; BEHAVIOR; KINETICS; SURFACE; CO-O2