The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO₂-NiO-Co₃O₄/Ce 0.2 Zr 0.8 O₂/Cordierite Three Way Catalyst

This paper compares different coating methods ( solid combustion, hybrid deposition, secondary growth on seed, suspension, double deposition of wet impregnation and suspension) to deposit Ce Zr O₂ mixed oxides on cordierite substrates, for use as a three way catalyst. Among them, the double depositi...

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Bibliographic Details
Published in:Materials 2014-09, Vol.7 (9), p.6237
Main Authors: Pham, Phuong Thi Mai, Le, Minh Thang, Nguyen, Tien The, Bruneel, Els, Van Driessche, Isabel
Format: Article
Language:English
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Summary:This paper compares different coating methods ( solid combustion, hybrid deposition, secondary growth on seed, suspension, double deposition of wet impregnation and suspension) to deposit Ce Zr O₂ mixed oxides on cordierite substrates, for use as a three way catalyst. Among them, the double deposition was proven to be the most efficient one. The coated sample shows a BET (Brunauer-Emmett-Teller) surface area of 25 m²/g, combined with a dense and crack free surface. The catalyst with a layer of MnO₂-NiO-Co₃O₄ mixed oxides on top of the Ce Zr O₂/cordierite substrate prepared by this method exhibits good activity for the treatment of CO, NO and C₃H₆ in exhaust gases (CO conversion of 100% at 250 °C, C₃H₆ conversion of 100% at 400 °C and NO conversion of 40% at 400 °C).
ISSN:1996-1944
1996-1944