Anti-sintering ZrO2-modified Ni/α-Al2O3 catalyst for CO methanation

Qing Liu; Fangna Gu; Ziyi Zhong; Guangwen Xu; Fabing Su

doi:10.1039/c5ra28057e

Anti-sintering ZrO₂-modified Ni/α-Al₂O₃ catalyst for CO methanation

Qing Liu, Fangna Gu^*, Ziyi Zhong, Guangwen Xu, Fabing Su

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

To obviously reduce the sintering behavior of Ni particles in Ni/α-Al₂O₃ catalysts during CO methanation reaction, ZrO₂ was deposited onto the Ni/α-Al₂O₃ catalyst surface by a modified impregnation method. It was observed that the ZrO₂-modified catalyst with an appropriate amount of ZrO₂ showed enhanced catalytic activity due to the increased H₂ uptake and Ni dispersion. During the 103h-lifetime test, the ZrO₂-modified catalyst exhibited higher stability and anti-sintering performance than the unmodified one, because the partial coverage of ZrO₂ particles could effectively prevent Ni particles from sintering during the reaction at high temperatures. The findings obtained in this study should be conducive to the design and development of supported metal catalysts for high temperature reactions with enhanced stability.

Original language	English
Pages (from-to)	20979-20986
Number of pages	8
Journal	RSC Advances
Volume	6
Issue number	25
DOIs	https://doi.org/10.1039/c5ra28057e
State	Published - 2016
Externally published	Yes

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title = "Anti-sintering ZrO2-modified Ni/α-Al2O3 catalyst for CO methanation",

abstract = "To obviously reduce the sintering behavior of Ni particles in Ni/α-Al2O3 catalysts during CO methanation reaction, ZrO2 was deposited onto the Ni/α-Al2O3 catalyst surface by a modified impregnation method. It was observed that the ZrO2-modified catalyst with an appropriate amount of ZrO2 showed enhanced catalytic activity due to the increased H2 uptake and Ni dispersion. During the 103h-lifetime test, the ZrO2-modified catalyst exhibited higher stability and anti-sintering performance than the unmodified one, because the partial coverage of ZrO2 particles could effectively prevent Ni particles from sintering during the reaction at high temperatures. The findings obtained in this study should be conducive to the design and development of supported metal catalysts for high temperature reactions with enhanced stability.",

author = "Qing Liu and Fangna Gu and Ziyi Zhong and Guangwen Xu and Fabing Su",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

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doi = "10.1039/c5ra28057e",

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volume = "6",

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T1 - Anti-sintering ZrO2-modified Ni/α-Al2O3 catalyst for CO methanation

AU - Liu, Qing

AU - Gu, Fangna

AU - Zhong, Ziyi

AU - Xu, Guangwen

AU - Su, Fabing

N1 - Publisher Copyright: © The Royal Society of Chemistry 2016.

PY - 2016

Y1 - 2016

N2 - To obviously reduce the sintering behavior of Ni particles in Ni/α-Al2O3 catalysts during CO methanation reaction, ZrO2 was deposited onto the Ni/α-Al2O3 catalyst surface by a modified impregnation method. It was observed that the ZrO2-modified catalyst with an appropriate amount of ZrO2 showed enhanced catalytic activity due to the increased H2 uptake and Ni dispersion. During the 103h-lifetime test, the ZrO2-modified catalyst exhibited higher stability and anti-sintering performance than the unmodified one, because the partial coverage of ZrO2 particles could effectively prevent Ni particles from sintering during the reaction at high temperatures. The findings obtained in this study should be conducive to the design and development of supported metal catalysts for high temperature reactions with enhanced stability.

AB - To obviously reduce the sintering behavior of Ni particles in Ni/α-Al2O3 catalysts during CO methanation reaction, ZrO2 was deposited onto the Ni/α-Al2O3 catalyst surface by a modified impregnation method. It was observed that the ZrO2-modified catalyst with an appropriate amount of ZrO2 showed enhanced catalytic activity due to the increased H2 uptake and Ni dispersion. During the 103h-lifetime test, the ZrO2-modified catalyst exhibited higher stability and anti-sintering performance than the unmodified one, because the partial coverage of ZrO2 particles could effectively prevent Ni particles from sintering during the reaction at high temperatures. The findings obtained in this study should be conducive to the design and development of supported metal catalysts for high temperature reactions with enhanced stability.

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U2 - 10.1039/c5ra28057e

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Anti-sintering ZrO₂-modified Ni/α-Al₂O₃ catalyst for CO methanation

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