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Catalysts for Combustion Containing Tin and Copper Overloaded on ZSM-5 Zeolite

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Abstract

Three samples of modified HZSM-5 zeolite with tin and copper were prepared by ion exchange and coprecipitation under basic conditions. The catalytic activity of prepared catalysts was tested in CO and methane combustion after pretreatments done at 873, 1088 and 1273 K. The XRD analysis and TG-DTA were used to interpret thermal stability of catalysts. Introduction of tin as the third element to well-known copper-overloaded ZSM-5 combustion catalysts improves their thermal stability. It was found that CO combustion is independent of the zeolite structure and probably adjacent sites are necessary to activate carbon monoxide and oxygen in the vicinity. Contrarily, non-dehydroxylated zeolite is indispensable as an active element together with copper or tin to catalyze methane combustion.

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Authors and Affiliations

  1. IChO PAN, Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland

    Piotr T. Wierzchowski & L. Wieslaw Zatorski

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  1. Piotr T. Wierzchowski
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  2. L. Wieslaw Zatorski
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Wierzchowski, P.T., Zatorski, L.W. Catalysts for Combustion Containing Tin and Copper Overloaded on ZSM-5 Zeolite. Catalysis Letters 78, 171–176 (2002). https://doi.org/10.1023/A:1014989708836

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  • DOI: https://doi.org/10.1023/A:1014989708836

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