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In relation to this article, we declare that there is no conflict of interest.
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Received April 8, 2018
Accepted May 27, 2018
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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Methane combustion over Pd/Ni-Al oxide catalysts: Effect of Ni/Al ratio in the Ni-Al oxide support

Department of Chemical Engineering, Chungbuk National University, Chungbuk 28644, Korea 1Department of Environmental Engineering, Chungbuk National University, Chungbuk 28644, Korea
chshin@chungbuk.ac.kr
Korean Journal of Chemical Engineering, September 2018, 35(9), 1815-1822(8), 10.1007/s11814-018-0090-0
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Abstract

We prepared xNi-2Al oxide (x=0-1.1) supports via a hydrothermal method, and applied Pd/xNi-2Al catalysts in the catalytic methane combustion reaction. It was found that the physicochemical properties of the xNi-2Al supports varied as a function of the Ni content, and the interaction between support and impregnated Pd was also influenced by the Ni content. Furthermore, variation in the Ni content significantly affected the chemical state and reducibility of the impregnated Pd species. Finally, the catalytic activity and stability of prepared Pd/xNi-2Al catalysts in the methane combustion reaction exhibited a volcano-shaped curve as a function of Ni content, with a maximum being observed for the Pd/1.0Ni-2Al catalyst, which corresponded to the highest Pd2+ composition and reducibility.

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