Phosphorous poisoning on customer-aged catalysts was investigated by material analysis and performance testing. Most of the phosphorus was associated with the oxide components in the washcoat. These contaminants were roughly classified as aluminum phosphate, cerium phosphate, zinc-calcium phosphate. Deactivation of the catalyst with aluminum phosphate was strong and followed a linear correlation from oxalic acid testing. Phosphorus scavenging additives were researched to inhibit increase of aluminum phosphate. According to thermodynamic calculations, lower free energy of compounds of additive and phosphate is expected to prevent formation of aluminum phosphate.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Analysis of Phosphorus Poisoning on Exhaust Catalysts from Compact-Class Vehicle


    Additional title:

    Sae Technical Papers


    Contributors:
    Sadai, A. (author) / Sumida, H. (author) / Kyogoku, M. (author) / Takato, M. (author) / McCabe, R.W. (author) / Ichikawa, S. (author) / Koda, Y. (author) / Miwa, Y. (author)

    Conference:

    SAE 2004 World Congress & Exhibition ; 2004



    Publication date :

    2004-03-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Analysis of phosphorus poisoning on exhaust catalysts from compact-class vehicle

    Sumida,H. / Koda,Y. / Sadai,A. et al. | Automotive engineering | 2004


    Analysis of Phosphorus Poisoning on Exhaust Catalysts from Compact-Class Vehicle

    Sumida, H. / Koda, Y. / Sadai, A. et al. | British Library Conference Proceedings | 2004


    2004-01-0147 Analysis of Phosphorus Poisoning on Exhaust Catalysts from Compact-Class Vehicle

    Sumida, H. / Koda, Y. / Sadai, A. et al. | British Library Conference Proceedings | 2004


    Phosphorous poisoning and phosphorous exhaust chemistry with diesel oxidation catalysts

    Bunting,B.G. / More,K. / Lewis,S. et al. | Automotive engineering | 2005


    Modeling of Phosphorus Poisoning Phenomena over Diesel Oxidation Catalysts

    Nagata, Makoto / Tanaka, Yasushi | SAE Technical Papers | 2010