Journal of Applied Electrochemistry

, Volume 38, Issue 8, pp 1151–1157

Electrochemical promotion of Pt impregnated catalyst for the treatment of automotive exhaust emissions

  • Antonio de Lucas-Consuegra
  • Fernando Dorado
  • Carmen Jiménez-Borja
  • José Luís Valverde
Original Paper

Abstract

This study has shown that Pt/K-βAl2O3 electrochemical catalyst can reach high catalytic activity for the selective reduction of N2O by C3H6. In addition it was also demonstrated that Electrochemical Promotion could be a solution to reduce the adverse effects of poisons (O2 and H2O) on the catalytic activity. For instance, in the presence of O2 (1%) and H2O (3%) in the reactive stream, electrochemical pumping of potassium ions to the Pt catalyst increased the N2O reduction rate by a factor of 7.4 at 400 °C. We have also demonstrated that the wet impregnation procedure led to a very stable Pt film, with very good resistance to thermal sintering under real operation conditions. Therefore, the use of Pt impregnated films deposited on K-βAl2O3 solid electrolytes is a feasible solution for the treatment of automotive exhaust gases.

Keywords

Selective catalytic reduction N2Electrochemical promotion Pt impregnated catalyst NEMCA effect 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Antonio de Lucas-Consuegra
    • 1
  • Fernando Dorado
    • 1
  • Carmen Jiménez-Borja
    • 1
  • José Luís Valverde
    • 1
  1. 1.Departamento de Ingeniería Química, Facultad de Ciencias QuímicasUniversidad de Castilla La ManchaCiudad RealSpain

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