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Issue 4, 2006
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TXRF analysis of aged three way catalysts

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Abstract

A methodology for the quantitative analysis of the elements present in car exhaust catalysts by TXRF is described. Some of the most relevant catalytic components (Zr, Rh, Pd) and contaminant elements (P, Pb, Zn, Pt, Ca and Ni) on car Three Way Catalysts were quantified during vehicle aging. The study was conducted along the main axis of a Ford Focus 1.6i catalytic cartridge, aiming to obtain the axial profile of the elements retained or eliminated after more than 59 000 km. The analysis of a fresh Three Way Catalysts (0 km) was also conducted for comparative purposes. The existence of a strong differences for elemental concentration in the interphase between the two blocks of the catalytic cartridge has been quantitatively measured for first time. In addition, the behaviour of the contaminant absorption capacity of both catalytic blocks has been obtained. Finally, the loss of the contaminant elements Pb and Zn to the environment has been proven.

Graphical abstract: TXRF analysis of aged three way catalysts

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Publication details

The article was received on 22 Sep 2005, accepted on 14 Feb 2006 and first published on 09 Mar 2006


Article type: Paper
DOI: 10.1039/B513508G
Citation: Analyst, 2006,131, 590-594

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    TXRF analysis of aged three way catalysts

    R. Fernández-Ruiz, F. C. Galisteo, C. Larese, M. L. Granados, R. Mariscal and J. L. G. Fierro, Analyst, 2006, 131, 590
    DOI: 10.1039/B513508G

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