High-Performance Ni-Fe Redox Catalysts for Selective CH4 to Syngas Conversion via Chemical Looping

Jijiang Huang; Wen Liu; Yanhui Yang; Bin Liu

doi:10.1021/acscatal.7b03964

High-Performance Ni-Fe Redox Catalysts for Selective CH₄ to Syngas Conversion via Chemical Looping

Jijiang Huang
, Wen Liu
, Yanhui Yang^*
, Bin Liu

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

110 Citations (Scopus)

Abstract

In traditional steam reforming of CH₄, the CH₄ conversion and its selectivity to CO and H₂ are thermodynamically limited. In this work, we designed a series of Ni-Fe redox catalysts with varying Ni/Fe ratios. The Ni-Fe redox catalysts could function as oxygen carriers to selectively convert CH₄ to syngas via chemical looping. The selectivity to CO was dramatically enhanced via a selective conversion route of CH₄ to C and H₂ in the reduction, followed by C gasification to syngas with hot steam. Taking the advantages of the highly reactive Ni species for CH₄ activation and Fe species for water splitting, together with the resulting NiFe alloy in the reduced catalyst for catalytic CH₄ decomposition, high CH₄ conversion up to 97.5% and CO selectivity up to 92.9% were achieved at 900 °C with productivity of CO and H₂ of 9.6 and 29.0 mol kg_catalyst^-1, respectively, on equimolar Ni-Fe catalyst. © 2018 American Chemical Society.

Original language	English
Pages (from-to)	1748-1756
Journal	ACS Catalysis
Volume	8
Issue number	3
DOIs	https://doi.org/10.1021/acscatal.7b03964
Publication status	Published - 2 Mar 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

carbon deposition
chemical looping
Ni-Fe redox catalyst
steam reforming of methane
syngas production

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Cite this

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title = "High-Performance Ni-Fe Redox Catalysts for Selective CH4 to Syngas Conversion via Chemical Looping",

abstract = "In traditional steam reforming of CH4, the CH4 conversion and its selectivity to CO and H2 are thermodynamically limited. In this work, we designed a series of Ni-Fe redox catalysts with varying Ni/Fe ratios. The Ni-Fe redox catalysts could function as oxygen carriers to selectively convert CH4 to syngas via chemical looping. The selectivity to CO was dramatically enhanced via a selective conversion route of CH4 to C and H2 in the reduction, followed by C gasification to syngas with hot steam. Taking the advantages of the highly reactive Ni species for CH4 activation and Fe species for water splitting, together with the resulting NiFe alloy in the reduced catalyst for catalytic CH4 decomposition, high CH4 conversion up to 97.5\% and CO selectivity up to 92.9\% were achieved at 900 °C with productivity of CO and H2 of 9.6 and 29.0 mol kgcatalyst-1, respectively, on equimolar Ni-Fe catalyst. {\textcopyright} 2018 American Chemical Society.",

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T1 - High-Performance Ni-Fe Redox Catalysts for Selective CH4 to Syngas Conversion via Chemical Looping

AU - Huang, Jijiang

AU - Liu, Wen

AU - Yang, Yanhui

AU - Liu, Bin

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/3/2

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N2 - In traditional steam reforming of CH4, the CH4 conversion and its selectivity to CO and H2 are thermodynamically limited. In this work, we designed a series of Ni-Fe redox catalysts with varying Ni/Fe ratios. The Ni-Fe redox catalysts could function as oxygen carriers to selectively convert CH4 to syngas via chemical looping. The selectivity to CO was dramatically enhanced via a selective conversion route of CH4 to C and H2 in the reduction, followed by C gasification to syngas with hot steam. Taking the advantages of the highly reactive Ni species for CH4 activation and Fe species for water splitting, together with the resulting NiFe alloy in the reduced catalyst for catalytic CH4 decomposition, high CH4 conversion up to 97.5% and CO selectivity up to 92.9% were achieved at 900 °C with productivity of CO and H2 of 9.6 and 29.0 mol kgcatalyst-1, respectively, on equimolar Ni-Fe catalyst. © 2018 American Chemical Society.

AB - In traditional steam reforming of CH4, the CH4 conversion and its selectivity to CO and H2 are thermodynamically limited. In this work, we designed a series of Ni-Fe redox catalysts with varying Ni/Fe ratios. The Ni-Fe redox catalysts could function as oxygen carriers to selectively convert CH4 to syngas via chemical looping. The selectivity to CO was dramatically enhanced via a selective conversion route of CH4 to C and H2 in the reduction, followed by C gasification to syngas with hot steam. Taking the advantages of the highly reactive Ni species for CH4 activation and Fe species for water splitting, together with the resulting NiFe alloy in the reduced catalyst for catalytic CH4 decomposition, high CH4 conversion up to 97.5% and CO selectivity up to 92.9% were achieved at 900 °C with productivity of CO and H2 of 9.6 and 29.0 mol kgcatalyst-1, respectively, on equimolar Ni-Fe catalyst. © 2018 American Chemical Society.

KW - carbon deposition

KW - chemical looping

KW - Ni-Fe redox catalyst

KW - steam reforming of methane

KW - syngas production

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DO - 10.1021/acscatal.7b03964

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