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.

Funders	Funder number
Advanced Research Projects Agency-Energy	DE-AR0000493
National Science Foundation	DMR1563754
Office of Naval Research	N00014-16-1-2780

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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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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