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Reduction of NO by H2 on Carbon Film Supported Ni Catalysts – in situ FTIR Study

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Abstract

The NO/H2 reaction has been studied over a Ni loaded carbon film catalysts using in situ FTIR spectroscopy at the temperature range 25–350°C. On these catalysts, the differences in activity and selectivity were found depending on the nature of the surface functional groups. These differences were correlated with transient infrared spectral features which appeared during the reaction. It has been proved experimentally that the chemical character of the support is of vital importance during the process. The rise in NO conversion and N2 selectivity was observed when the surface of the catalysts was changed by the NH3 chemisorption. Amide and/or imide species formed due to the reduction of ammonium salts of carboxylic acids can play a significant role as active centers during the NO reduction.

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Authors and Affiliations

  1. Faculty of Chemistry, N. Copernicus University, Gagarin St. 7, 87–100, Toruñ, Poland

    Marek Wiśniewski & Jerzy Zawadzki

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  1. Marek Wiśniewski
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  2. Jerzy Zawadzki
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Correspondence to Marek Wiśniewski.

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Wiśniewski, M., Zawadzki, J. Reduction of NO by H2 on Carbon Film Supported Ni Catalysts – in situ FTIR Study. Catalysis Letters 94, 135–141 (2004). https://doi.org/10.1023/B:CATL.0000020538.16361.85

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  • DOI: https://doi.org/10.1023/B:CATL.0000020538.16361.85

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