A study was made into thermal deactivation of Pt/Rh/Ce three way conversion (TWC) catalyst by the use of aging engines, as well as the changes in catalytic properties developed by thermal deactivation. As a result, crystallization of Pt and CeO2 and the accompanied decrease in O2 storage capacity were found as factors resulting from the thermal deactivation.To minimize the thermal deactivation of the catalyst, CeO2 became a focus of the study and a method to inhibit CeO2 crystallization was pursued. The results of engine high temperature durability testing on improved catalysts employing the new technique confirmed inhibition effects of thermal deactivation.The study successfully resulted in a new TWC catalyst minimizing thermal deactivation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Study on Three Way Conversion Catalyst Thermal Deactivation and improvement


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Funabiki, Masaki (Autor:in) / Yamada, Teiji (Autor:in)

    Kongress:

    1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1988



    Erscheinungsdatum :

    1988-10-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A study on three way conversion catalyst thermal deactivation and improvement

    Funabiki,M. / Yamada,T. / Nippon Engelhard,JP | Kraftfahrwesen | 1988


    Thermal effect on three-way catalyst deactivation and improvement

    Ihara,K. / Ohkubo,K. / Niura,Y. et al. | Kraftfahrwesen | 1987


    High Temperature Deactivation of Three-Way Catalyst

    Mann, G. S. / Carol, L. A. / Newman, N. E. | SAE Technical Papers | 1989


    High temperature deactivation of three-way catalyst

    Carol,L.A. / Newman,N.E. / Mann,G.S. et al. | Kraftfahrwesen | 1989


    Thermal Deactivation of a Three-Way Catalyst: Changes of Structural and Performance Properties

    Stenbom, Bertil / Wirmark, Goran / Smedler, Gudmund et al. | SAE Technical Papers | 1990