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Effect of CexZryLazOδ Mixed Oxides on the Structural and Catalytic Behavior of Monometallic Catalytic Converters Under Simulated Exhaust Conditions

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Abstract

The effect of CeO2, La2O3 and ZrO2 structural stabilizers/promoters, in the form of CexZryLazOδ mixed oxides, on the catalytic performance and thermal stability of monometallic (Pt), monolithic-type, Al2O3-washcoated three-way catalytic converters (TWCs) was investigated under simulated exhaust conditions. The evolution of textural, structural and surface behavior of CexZryLazOδ modified TWCs were identified by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) and diffuse reflectance infrared spectroscopy (DRIFTS) and appropriately correlated with the catalytic behavior and thermal stability of TWCs.

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Acknowledgement

The authors acknowledge financial support of this work by the PENED 03ED606 research project, implemented within the framework of the “Reinforcement Programme of Human Research Manpower” (PENED) and co-financed by National and Community Funds (75% from E.U.-European Social Fund and 25% from the Greek Ministry of Development-G.S.R.T.).

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Authors and Affiliations

  1. Department of Sciences, Laboratory of Physical Chemistry and Chemical Processes, Technical University of Crete, 73100, Chania, Crete, Greece

    V. Matsouka, M. Konsolakis & I. V. Yentekakis

  2. School of Mining Engineering and Metallurgy, National Technical University of Athens, Iroon Polytechniou 9, Zografou Campus, 15780, Athens, Greece

    A. Papavasiliou & A. Tsetsekou

Authors
  1. V. Matsouka
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  2. M. Konsolakis
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  3. I. V. Yentekakis
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  4. A. Papavasiliou
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  5. A. Tsetsekou
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Corresponding authors

Correspondence to M. Konsolakis or I. V. Yentekakis.

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Matsouka, V., Konsolakis, M., Yentekakis, I.V. et al. Effect of CexZryLazOδ Mixed Oxides on the Structural and Catalytic Behavior of Monometallic Catalytic Converters Under Simulated Exhaust Conditions. Top Catal 52, 1873–1879 (2009). https://doi.org/10.1007/s11244-009-9348-4

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