Measurement and Characterization of a High-Temperature, Coke-Resistant Bi-functional Ni/BZY15 Water-Gas-Shift Catalyst Under Steam-Reforming Conditions

Dylan M. Jennings; Canan Karakaya; Huayang Zhu; Chuancheng Duan; Ryan O’Hayre; Gregory S. Jackson; Ivar E. Reimanis; Robert J. Kee

doi:10.1007/s10562-018-2553-7

Measurement and Characterization of a High-Temperature, Coke-Resistant Bi-functional Ni/BZY15 Water-Gas-Shift Catalyst Under Steam-Reforming Conditions

Dylan M. Jennings, Canan Karakaya, Huayang Zhu, Chuancheng Duan, Ryan O’Hayre, Gregory S. Jackson, Ivar E. Reimanis, Robert J. Kee

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

9 Scopus citations

Abstract

Abstract: This paper characterizes the bi-functional behavior of a unique, nano-dispersed Ni/BZY15 water-gas-shift catalyst under steam-reforming conditions. The catalyst is highly active above 500 ^∘C and has been found to be exceptionally stable in a hydrocarbon steam reforming environment. The performance can be attributed to two features: (1) well dispersed, nano-sized Ni particles with high surface area, and (2) the ability of the redox-active BZY15 support to remove carbon from the Ni. The bi-functionality is demonstrated through a comparison of WGS activity with BZY15 alone and with a traditional Al ₂O ₃ support. The WGS activity is measured under a range of operating temperatures, steam-to-carbon ratios, and feed-gas flow rates. A series of elementary reaction steps are proposed to explain the bi-functionality and to provide a basis for development of a detailed reaction mechanism. Graphical Abstract: [Figure not available: see fulltext.].

Original language	English
Pages (from-to)	3592-3607
Number of pages	16
Journal	Catalysis Letters
Volume	148
Issue number	12
DOIs	https://doi.org/10.1007/s10562-018-2553-7
State	Published - Dec 1 2018
Externally published	Yes

Funding

Acknowledgements This research was supported by the National Science Foundation via Grant DMR1563754. Additional support was provided by Office of Naval Research via Grant N00014-16-1-2780 and Advanced Research Projects Agency-Energy (ARPA-E) for funding under the REBELS program (award DE-AR0000493). We gratefully acknowledge numerous insightful and helpful discussions with our colleagues at the Colorado School of Mines, Prof. Sandrine Ricote, Dr. Madison Kelley and Mr. Luca Imponenti.

Keywords

BZY15
Bi-functional catalyst
Ni catalyst
Reforming
Water-gas shift

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10.1007/s10562-018-2553-7

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title = "Measurement and Characterization of a High-Temperature, Coke-Resistant Bi-functional Ni/BZY15 Water-Gas-Shift Catalyst Under Steam-Reforming Conditions",

abstract = "Abstract: This paper characterizes the bi-functional behavior of a unique, nano-dispersed Ni/BZY15 water-gas-shift catalyst under steam-reforming conditions. The catalyst is highly active above 500 ∘C and has been found to be exceptionally stable in a hydrocarbon steam reforming environment. The performance can be attributed to two features: (1) well dispersed, nano-sized Ni particles with high surface area, and (2) the ability of the redox-active BZY15 support to remove carbon from the Ni. The bi-functionality is demonstrated through a comparison of WGS activity with BZY15 alone and with a traditional Al 2O 3 support. The WGS activity is measured under a range of operating temperatures, steam-to-carbon ratios, and feed-gas flow rates. A series of elementary reaction steps are proposed to explain the bi-functionality and to provide a basis for development of a detailed reaction mechanism. Graphical Abstract: [Figure not available: see fulltext.].",

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author = "Jennings, {Dylan M.} and Canan Karakaya and Huayang Zhu and Chuancheng Duan and Ryan O{\textquoteright}Hayre and Jackson, {Gregory S.} and Reimanis, {Ivar E.} and Kee, {Robert J.}",

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doi = "10.1007/s10562-018-2553-7",

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AU - Jennings, Dylan M.

AU - Karakaya, Canan

AU - Zhu, Huayang

AU - Duan, Chuancheng

AU - O’Hayre, Ryan

AU - Jackson, Gregory S.

AU - Reimanis, Ivar E.

AU - Kee, Robert J.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Abstract: This paper characterizes the bi-functional behavior of a unique, nano-dispersed Ni/BZY15 water-gas-shift catalyst under steam-reforming conditions. The catalyst is highly active above 500 ∘C and has been found to be exceptionally stable in a hydrocarbon steam reforming environment. The performance can be attributed to two features: (1) well dispersed, nano-sized Ni particles with high surface area, and (2) the ability of the redox-active BZY15 support to remove carbon from the Ni. The bi-functionality is demonstrated through a comparison of WGS activity with BZY15 alone and with a traditional Al 2O 3 support. The WGS activity is measured under a range of operating temperatures, steam-to-carbon ratios, and feed-gas flow rates. A series of elementary reaction steps are proposed to explain the bi-functionality and to provide a basis for development of a detailed reaction mechanism. Graphical Abstract: [Figure not available: see fulltext.].

AB - Abstract: This paper characterizes the bi-functional behavior of a unique, nano-dispersed Ni/BZY15 water-gas-shift catalyst under steam-reforming conditions. The catalyst is highly active above 500 ∘C and has been found to be exceptionally stable in a hydrocarbon steam reforming environment. The performance can be attributed to two features: (1) well dispersed, nano-sized Ni particles with high surface area, and (2) the ability of the redox-active BZY15 support to remove carbon from the Ni. The bi-functionality is demonstrated through a comparison of WGS activity with BZY15 alone and with a traditional Al 2O 3 support. The WGS activity is measured under a range of operating temperatures, steam-to-carbon ratios, and feed-gas flow rates. A series of elementary reaction steps are proposed to explain the bi-functionality and to provide a basis for development of a detailed reaction mechanism. Graphical Abstract: [Figure not available: see fulltext.].

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Measurement and Characterization of a High-Temperature, Coke-Resistant Bi-functional Ni/BZY15 Water-Gas-Shift Catalyst Under Steam-Reforming Conditions

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