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Alumina-Based Supports for Automotive Palladium Catalysts

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Abstract

Addition of La, Ba and Ce to Pd 3-way exhaust catalysts has been studied. The effect of these additives and temperature of calcination were studied on the activity of the catalysts stabilized in a simulated exhaust gas at 570°C (1 h), using an experimental design. The catalytic activities were measured in the simulated exhaust gas as a function of temperature. Also, the activity of the catalysts for the NO - CO - O2 system, was measured while changing the oxygen content. The results show that La promotes the reduction of NO at temperatures below 250°C. Improved catalysts have a high thermal stability.

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Authors
  1. M. Rashidzadeh
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  2. M.H. Peyrovi
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  3. R. Mondegarian
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Rashidzadeh, M., Peyrovi, M. & Mondegarian, R. Alumina-Based Supports for Automotive Palladium Catalysts. Reaction Kinetics and Catalysis Letters 69, 115–122 (2000). https://doi.org/10.1023/A:1005605228566

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