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The role of surface species on the SCR of NO by C3H6 under lean-burn conditions over platinum catalyst

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Abstract

The nature of the surface species on Pt/Al2O3 for the SCR of NO by C3H6 under excess oxygen has been investigated. An experiment consisting of three steps shows that there are at least three types of surface species occurring on the catalyst surface. However, a reactivity test and an investigation of surface species after adding a second metal (Fe, Sn, Co, Cr or W) to Pt/Al2O3 indicate that only (ClHmOn)HT species play an important role in NO reduction at a low operating temperature.

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Authors and Affiliations

  1. Research Center on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Chulalongkorn University, Bangkok, 10330, Thailand

    Choowong Chaisuk & Piyasan Praserthdam

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  1. Choowong Chaisuk
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  2. Piyasan Praserthdam
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Correspondence to Piyasan Praserthdam.

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Chaisuk, C., Praserthdam, P. The role of surface species on the SCR of NO by C3H6 under lean-burn conditions over platinum catalyst. Reaction Kinetics and Catalysis Letters 78, 99–105 (2003). https://doi.org/10.1023/A:1022565900568

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