Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation

Qing Liu; Fangna Gu; Xiaopeng Lu; Youjun Liu; Huifang Li; Ziyi Zhong; Guangwen Xu; Fabing Su

doi:10.1016/j.apcata.2014.09.028

Enhanced catalytic performances of Ni/Al₂O₃ catalyst via addition of V₂O₃ for CO methanation

Qing Liu, Fangna Gu^*, Xiaopeng Lu, Youjun Liu, Huifang Li, Ziyi Zhong, Guangwen Xu, Fabing Su

^*Corresponding author for this work

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

114 Scopus citations

Abstract

Highly active and coking resistant Ni-V₂O₃/Al₂O₃ catalysts were prepared by co-impregnation method for CO and CO₂ methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V₂O₃/Al₂O₃ catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO₂ methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni₃V₂O₈ was formed during the calcination of the Ni-V₂O₃/Al₂O₃ catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V₂O₃/Al₂O₃ catalysts for CO methanation was mainly due to the larger H₂ uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V₂O₃ could increase the oxygen vacancies, which enhanced the dissociation of CO₂ by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation.

Original language	English
Pages (from-to)	37-47
Number of pages	11
Journal	Applied Catalysis A: General
Volume	488
DOIs	https://doi.org/10.1016/j.apcata.2014.09.028
State	Published - 2014
Externally published	Yes

Keywords

CO methanation
CO methanation
Ni/AlO catalyst
NiVO
Vanadium oxide

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10.1016/j.apcata.2014.09.028

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@article{58f32b96b6a8481785f7dffe11b5ac6c,

title = "Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation",

abstract = "Highly active and coking resistant Ni-V2O3/Al2O3 catalysts were prepared by co-impregnation method for CO and CO2 methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V2O3/Al2O3 catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO2 methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni3V2O8 was formed during the calcination of the Ni-V2O3/Al2O3 catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V2O3/Al2O3 catalysts for CO methanation was mainly due to the larger H2 uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V2O3 could increase the oxygen vacancies, which enhanced the dissociation of CO2 by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation.",

keywords = "CO methanation, CO methanation, Ni/AlO catalyst, NiVO, Vanadium oxide",

author = "Qing Liu and Fangna Gu and Xiaopeng Lu and Youjun Liu and Huifang Li and Ziyi Zhong and Guangwen Xu and Fabing Su",

year = "2014",

doi = "10.1016/j.apcata.2014.09.028",

language = "英语",

volume = "488",

pages = "37--47",

journal = "Applied Catalysis A: General",

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T1 - Enhanced catalytic performances of Ni/Al2O3 catalyst via addition of V2O3 for CO methanation

AU - Liu, Qing

AU - Gu, Fangna

AU - Lu, Xiaopeng

AU - Liu, Youjun

AU - Li, Huifang

AU - Zhong, Ziyi

AU - Xu, Guangwen

AU - Su, Fabing

PY - 2014

Y1 - 2014

N2 - Highly active and coking resistant Ni-V2O3/Al2O3 catalysts were prepared by co-impregnation method for CO and CO2 methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V2O3/Al2O3 catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO2 methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni3V2O8 was formed during the calcination of the Ni-V2O3/Al2O3 catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V2O3/Al2O3 catalysts for CO methanation was mainly due to the larger H2 uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V2O3 could increase the oxygen vacancies, which enhanced the dissociation of CO2 by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation.

AB - Highly active and coking resistant Ni-V2O3/Al2O3 catalysts were prepared by co-impregnation method for CO and CO2 methanation. The influence of vanadium oxide addition on catalyst structure, distribution and reducibility of Ni species, morphology and surface characteristics, was investigated in detail. Compared to the catalyst without vanadium, the Ni-V2O3/Al2O3 catalysts showed significant improvement in the activity, thermal stability, and resistance to coke formation in CO methanation. In addition, these catalysts also showed high activities for CO2 methanation at both atmospheric and 2.0 MPa pressures. It was found that Ni3V2O8 was formed during the calcination of the Ni-V2O3/Al2O3 catalysts, which led to the formation of smaller Ni particle sizes (ca. 3.0 nm) as compared to the case without vanadium oxide addition. The higher catalytic activity over the Ni-V2O3/Al2O3 catalysts for CO methanation was mainly due to the larger H2 uptake, the higher Ni dispersion as well as the smaller metallic Ni nanoparticles. The oxidation-reduction cycle of V2O3 could increase the oxygen vacancies, which enhanced the dissociation of CO2 by-product and generated surface oxygen intermediates, thus preventing carbon deposition on the Ni particles in CO methanation.

KW - CO methanation

KW - Ni/AlO catalyst

KW - NiVO

KW - Vanadium oxide

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DO - 10.1016/j.apcata.2014.09.028

M3 - 文章

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SN - 0926-860X

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JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

ER -

Enhanced catalytic performances of Ni/Al₂O₃ catalyst via addition of V₂O₃ for CO methanation

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