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Catalysts 2017, 7(1), 21; doi:10.3390/catal7010021

Core-Shell Structured Ni@SiO2 Catalysts Exhibiting Excellent Catalytic Performance for Syngas Methanation Reactions

1
,
1
and
1,2,*
1
School of Chemistry and Chemical Engineering of Shihezi University, Shihezi 832000, Xinjiang, China
2
Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi 832000, Xinjiang, China
*
Author to whom correspondence should be addressed.
Academic Editors: Benoît Louis, Qiang Wang and Marcelo Maciel Pereira
Received: 24 November 2016 / Revised: 17 December 2016 / Accepted: 5 January 2017 / Published: 9 January 2017
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Abstract

In this study, we prepared core-shell structured Ni@SiO2 catalysts using chemical precipitation and modified Stöber methods. The obtained Ni@SiO2 samples exhibited excellent catalysis performances, including high CO conversion of 99.0% and CH4 yield of 89.8%. Moreover, Ni@SiO2 exhibited excellent catalytic stability during a 100 h lifetime test, which was superior to that of the Ni/SiO2 catalyst. The prepared samples were characterized using a series of techniques, and the results indicated that the catalytic performance for syngas methanation reaction of the Ni@SiO2 sample was markedly improved owing to its nanoreactor structure. The strong interaction between the Ni core and the SiO2 shell effectively restrained the growth of particles, and the deposition of C species. View Full-Text
Keywords: syngas methanation; Ni@SiO2; anti-carbon deposition; catalytic stability syngas methanation; Ni@SiO2; anti-carbon deposition; catalytic stability
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Han, Y.; Wen, B.; Zhu, M. Core-Shell Structured Ni@SiO2 Catalysts Exhibiting Excellent Catalytic Performance for Syngas Methanation Reactions. Catalysts 2017, 7, 21.

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