Enhanced investigation of CO methanation over Ni/Al 2O 3 catalysts for synthetic natural gas production

Dacheng Hu; Jiajian Gao; Yuan Ping; Lihua Jia; Poernomo Gunawan; Ziyi Zhong; Guangwen Xu; Fangna Gu; Fabing Su

doi:10.1021/ie300049f

Enhanced investigation of CO methanation over Ni/Al ₂O ₃ catalysts for synthetic natural gas production

Dacheng Hu, Jiajian Gao, Yuan Ping, Lihua Jia, Poernomo Gunawan, Ziyi Zhong, Guangwen Xu, Fangna Gu^*, Fabing Su

^*Corresponding author for this work

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

285 Scopus citations

Abstract

CO methanation reaction over the Ni/Al ₂O ₃ catalysts for synthetic natural gas production was systematically investigated by tuning a number of parameters, including using different commercial Al ₂O ₃ supports and varying NiO and MgO loading, calcination temperature, space velocity, H ₂/CO ratio, reaction pressure, and time, respectively. The catalytic performance was greatly influenced by the above-mentioned parameters. Briefly, a large surface area of the Al ₂O ₃ support, a moderate interaction between Ni and the support Al ₂O ₃, a proper Ni content (20 wt %), and a relatively low calcination temperature (400 °C) promoted the formation of small NiO particles and reducible β-type NiO species, which led to high catalytic activities and strong resistance to the carbon deposition, while addition of a small amount of MgO (2 wt %) could improve the catalyst stability by reducing the carbon deposition; other optimized conditions that enhanced the catalytic performance included high reaction pressure (3.0 MPa), high H ₂/CO ratio (>3:1), low space velocity, and addition of quartz sand as the diluting agent in catalyst bed. The best catalyst combination was 20-40 wt % of NiO supported on a commercial Al ₂O ₃ (S ₄) with addition of 2-4 wt % of MgO, calcined at 400-500 °C and run at a reaction pressure of 3.0 MPa. On this catalyst, 100% of CO conversion could be achieved within a wide range of reaction temperature (300-550 °C), and the CH ₄ selectivity increased with increasing temperature and reached 96.5% at a relatively low temperature of 350 °C. These results will be very helpful to develop highly efficient Ni-based catalysts for the methanation reaction, to optimize the reaction process, and to better understand the above reaction.

Original language	English
Pages (from-to)	4875-4886
Number of pages	12
Journal	Industrial and Engineering Chemistry Research
Volume	51
Issue number	13
DOIs	https://doi.org/10.1021/ie300049f
State	Published - 4 Apr 2012
Externally published	Yes

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@article{6e056f09a50b4b37ba24ffe959d36881,

title = "Enhanced investigation of CO methanation over Ni/Al 2O 3 catalysts for synthetic natural gas production",

abstract = "CO methanation reaction over the Ni/Al 2O 3 catalysts for synthetic natural gas production was systematically investigated by tuning a number of parameters, including using different commercial Al 2O 3 supports and varying NiO and MgO loading, calcination temperature, space velocity, H 2/CO ratio, reaction pressure, and time, respectively. The catalytic performance was greatly influenced by the above-mentioned parameters. Briefly, a large surface area of the Al 2O 3 support, a moderate interaction between Ni and the support Al 2O 3, a proper Ni content (20 wt %), and a relatively low calcination temperature (400 °C) promoted the formation of small NiO particles and reducible β-type NiO species, which led to high catalytic activities and strong resistance to the carbon deposition, while addition of a small amount of MgO (2 wt %) could improve the catalyst stability by reducing the carbon deposition; other optimized conditions that enhanced the catalytic performance included high reaction pressure (3.0 MPa), high H 2/CO ratio (>3:1), low space velocity, and addition of quartz sand as the diluting agent in catalyst bed. The best catalyst combination was 20-40 wt % of NiO supported on a commercial Al 2O 3 (S 4) with addition of 2-4 wt % of MgO, calcined at 400-500 °C and run at a reaction pressure of 3.0 MPa. On this catalyst, 100% of CO conversion could be achieved within a wide range of reaction temperature (300-550 °C), and the CH 4 selectivity increased with increasing temperature and reached 96.5% at a relatively low temperature of 350 °C. These results will be very helpful to develop highly efficient Ni-based catalysts for the methanation reaction, to optimize the reaction process, and to better understand the above reaction.",

author = "Dacheng Hu and Jiajian Gao and Yuan Ping and Lihua Jia and Poernomo Gunawan and Ziyi Zhong and Guangwen Xu and Fangna Gu and Fabing Su",

year = "2012",

month = apr,

day = "4",

doi = "10.1021/ie300049f",

language = "英语",

volume = "51",

pages = "4875--4886",

journal = "Industrial and Engineering Chemistry Research",

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T1 - Enhanced investigation of CO methanation over Ni/Al 2O 3 catalysts for synthetic natural gas production

AU - Hu, Dacheng

AU - Gao, Jiajian

AU - Ping, Yuan

AU - Jia, Lihua

AU - Gunawan, Poernomo

AU - Zhong, Ziyi

AU - Xu, Guangwen

AU - Gu, Fangna

AU - Su, Fabing

PY - 2012/4/4

Y1 - 2012/4/4

N2 - CO methanation reaction over the Ni/Al 2O 3 catalysts for synthetic natural gas production was systematically investigated by tuning a number of parameters, including using different commercial Al 2O 3 supports and varying NiO and MgO loading, calcination temperature, space velocity, H 2/CO ratio, reaction pressure, and time, respectively. The catalytic performance was greatly influenced by the above-mentioned parameters. Briefly, a large surface area of the Al 2O 3 support, a moderate interaction between Ni and the support Al 2O 3, a proper Ni content (20 wt %), and a relatively low calcination temperature (400 °C) promoted the formation of small NiO particles and reducible β-type NiO species, which led to high catalytic activities and strong resistance to the carbon deposition, while addition of a small amount of MgO (2 wt %) could improve the catalyst stability by reducing the carbon deposition; other optimized conditions that enhanced the catalytic performance included high reaction pressure (3.0 MPa), high H 2/CO ratio (>3:1), low space velocity, and addition of quartz sand as the diluting agent in catalyst bed. The best catalyst combination was 20-40 wt % of NiO supported on a commercial Al 2O 3 (S 4) with addition of 2-4 wt % of MgO, calcined at 400-500 °C and run at a reaction pressure of 3.0 MPa. On this catalyst, 100% of CO conversion could be achieved within a wide range of reaction temperature (300-550 °C), and the CH 4 selectivity increased with increasing temperature and reached 96.5% at a relatively low temperature of 350 °C. These results will be very helpful to develop highly efficient Ni-based catalysts for the methanation reaction, to optimize the reaction process, and to better understand the above reaction.

AB - CO methanation reaction over the Ni/Al 2O 3 catalysts for synthetic natural gas production was systematically investigated by tuning a number of parameters, including using different commercial Al 2O 3 supports and varying NiO and MgO loading, calcination temperature, space velocity, H 2/CO ratio, reaction pressure, and time, respectively. The catalytic performance was greatly influenced by the above-mentioned parameters. Briefly, a large surface area of the Al 2O 3 support, a moderate interaction between Ni and the support Al 2O 3, a proper Ni content (20 wt %), and a relatively low calcination temperature (400 °C) promoted the formation of small NiO particles and reducible β-type NiO species, which led to high catalytic activities and strong resistance to the carbon deposition, while addition of a small amount of MgO (2 wt %) could improve the catalyst stability by reducing the carbon deposition; other optimized conditions that enhanced the catalytic performance included high reaction pressure (3.0 MPa), high H 2/CO ratio (>3:1), low space velocity, and addition of quartz sand as the diluting agent in catalyst bed. The best catalyst combination was 20-40 wt % of NiO supported on a commercial Al 2O 3 (S 4) with addition of 2-4 wt % of MgO, calcined at 400-500 °C and run at a reaction pressure of 3.0 MPa. On this catalyst, 100% of CO conversion could be achieved within a wide range of reaction temperature (300-550 °C), and the CH 4 selectivity increased with increasing temperature and reached 96.5% at a relatively low temperature of 350 °C. These results will be very helpful to develop highly efficient Ni-based catalysts for the methanation reaction, to optimize the reaction process, and to better understand the above reaction.

UR - http://www.scopus.com/inward/record.url?scp=84859466182&partnerID=8YFLogxK

U2 - 10.1021/ie300049f

DO - 10.1021/ie300049f

M3 - 文章

AN - SCOPUS:84859466182

SN - 0888-5885

VL - 51

SP - 4875

EP - 4886

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 13

ER -

Enhanced investigation of CO methanation over Ni/Al ₂O ₃ catalysts for synthetic natural gas production

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