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Sorption–desorption of NO x from a lean gas mixture on H3PW12O40 · 6H2O supported on carbon nanotubes

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Abstract

NO x sorption capacities and efficiencies were measured on a new type of sorbent formed by 12-tungstophosphoric acid (HPW) supported on carbon nanotubes. On such a system, the sorption of both NO and NO2 was observed but compared with HPW alone, a complementary sorption of NO x is possible leading to a capacity of 25 mg/gHPW at 300 °C with an efficiency of 50%. The sorption results from the formation of a [H+(NO2 −),NO+)]. complex on HPW and an additional mode of adsorption by a free-nitrate which was identified by the bands at 2261, 1384 and 1295 cm−1 using infrared spectroscopy.

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Authors and Affiliations

  1. LMSPC, Laboratoire de Matériaux, Surfaces et Procédés pour la Catalyse, UMR 7515 du CNRS-ECPM, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France

    M. A. Gómez-García, V. Pitchon & A. Kiennemann

  2. Laboratoire de Catalyse, Chimie Fine et Polymères, Ecole Nationale Supérieure des Ingénieurs en Arts Chimiques et Technologiques, 118 route de Narbonne, 31077, Toulouse Cedex 4, France

    M. Corrias, Ph. Kalck & Ph. Serp

Authors
  1. M. A. Gómez-García
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  2. V. Pitchon
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  3. A. Kiennemann
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  4. M. Corrias
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  5. Ph. Kalck
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  6. Ph. Serp
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Gómez-García, M.A., Pitchon, V., Kiennemann, A. et al. Sorption–desorption of NO x from a lean gas mixture on H3PW12O40 · 6H2O supported on carbon nanotubes. Topics in Catalysis 30, 229–233 (2004). https://doi.org/10.1023/B:TOCA.0000029754.25117.e1

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  • DOI: https://doi.org/10.1023/B:TOCA.0000029754.25117.e1

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