Abstract
Rhodium—alumina-mixed oxides have been investigated as catalysts for selective catalytic reduction of NO x by propene, as a part of the R&D Project of Next Generation Catalysts Research Institute. The results indicated that the NO x reduction activity increases with a decrease in the reducibility of rhodium, suppressing wasteful consumption of propene by the reaction with oxygen. Coprecipitation method for the preparation of Rh-alumina catalysts was effective for the formation of the less-reducible rhodium sites, and the addition of zirconium and gallium further enhanced the formation of those sites and increased the selectivity of NO x reduction.
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Hatano, M. Rhodium–Aluminum-Mixed Oxide Catalysts for Selective Reduction of NO x by Hydrocarbons. Catalysis Surveys from Asia 7, 281–285 (2003). https://doi.org/10.1023/B:CATS.0000008167.89438.ee
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DOI: https://doi.org/10.1023/B:CATS.0000008167.89438.ee