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In relation to this article, we declare that there is no conflict of interest.
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Received August 28, 2017
Accepted December 12, 2017
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Low-temperature CO oxidation of Pt/Al0.1Ce0.9Ox catalysts: Effects of supports prepared with different precipitants

Greenhouse Gas Resources Research Group, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea 1Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Korea
chshin@chungbuk.ac.kr
Korean Journal of Chemical Engineering, March 2018, 35(3), 645-653(9), 10.1007/s11814-017-0343-3
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Abstract

We prepared 0.1Al-0.9Ce supports using various precipitants such as NH4OH, KOH, NaOH, K2CO3, and Na2CO3 to prepare Pt-based CO oxidation catalysts. Of the studied catalysts, the Pt/0.1Al-0.9Ce_NH4OH catalyst showed the optimum activity for CO oxidation. Catalysts prepared with carbonate-form precipitants revealed relatively lower activity than carbonate-free precipitants. A temperature at 50% CO conversion of all samples was observed in the low-temperature region in the presence of water vapor because of the promotional effect of the water-gas shift reaction. Several characterization results revealed that catalytic activity was related to oxygen capacity and Pt dispersion was attributable to precipitant nature.

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