Article ID Journal Published Year Pages File Type
58612 Catalysis Today 2006 7 Pages PDF
Abstract

Selective catalytic reduction (SCR) among the approaches for alleviating NOx emission was much attracted. Zeolites have the advantage for adsorption of propene, and noble metal catalyst has the advantage for oxidation of NO to NO2. Pt (or Au)/Al2O3 (or SiO2) were used as the lower layer of double wash-coated monolith catalysts. Zeolites (H-mordenite or ZSM-5) were coated as the upper layer. The catalytic performance of the double wash-coated catalyst was, remarkably, improved. Also, temperature window was shifted to lower temperature and broadened. It was known that the combined noble metal monolith catalyst with zeolite was very effective in removing NOx by SCR with hydrocarbons.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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