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Materials 2014, 7(9), 6237-6253; doi:10.3390/ma7096237

The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst

1
Laboratory of Environmental Friendly Materials and Technology, Advanced Institute of Science and Technology, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi 10000, Vietnam
2
Department of Organic and Petrochemical Technology, School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi 10000, Vietnam
3
Department of Inorganic and Physical Chemistry, SCRiPTS, Ghent University, Krijgslaan 281-S3, Gent 9000, Belgium
*
Author to whom correspondence should be addressed.
Received: 16 May 2014 / Revised: 29 July 2014 / Accepted: 6 August 2014 / Published: 2 September 2014
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Abstract

This paper compares different coating methods (in situ solid combustion, hybrid deposition, secondary growth on seed, suspension, double deposition of wet impregnation and suspension) to deposit Ce0.2Zr0.8O2 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 Ce0.2Zr0.8O2/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). View Full-Text
Keywords: cordierite; oxidation; propylene; NO; CO; manganese; nickel; cobalt oxide catalysts; ceria—zirconia cordierite; oxidation; propylene; NO; CO; manganese; nickel; cobalt oxide catalysts; ceria—zirconia
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Pham, P.T.M.; Le, M.T.; Nguyen, T.T.; Bruneel, E.; Van Driessche, I. The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst. Materials 2014, 7, 6237-6253.

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