The role of additives (Ba, Zr, and Nd) on Ce/Cu/Al2O3 catalyst for water-gas shift reaction

Hyun Suk Na; Seon Yong Ahn; Yeol Lim Lee; Kyoung Jin Kim; Won Jun Jang; Jae Oh Shim; Hyun Seog Roh

doi:10.1016/j.ijhydene.2020.06.278

The role of additives (Ba, Zr, and Nd) on Ce/Cu/Al₂O₃ catalyst for water-gas shift reaction

Hyun Suk Na, Seon Yong Ahn, Yeol Lim Lee, Kyoung Jin Kim, Won Jun Jang, Jae Oh Shim, Hyun Seog Roh

Division of Environmental Engineering

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

1 Citation (Scopus)

Abstract

Enhanced catalytic performance is required to increase the efficiency of hydrogen production from waste-derived synthesis gas via the high-temperature water-gas shift reaction (HT-WGSR). Herein, the effects of barium, zirconium, and neodymium doping on the physico-chemical properties of a Ce/Cu/Al₂O₃ catalyst as well as its catalytic performance for HT-WGSR are investigated. Ce/Cu/Al₂O₃ catalysts with various additives (barium, zirconium, and neodymium) prepared via a sequential impregnation method have been characterized by using N₂ adsorption-desorption isotherms, X-ray powder diffraction (XRPD), N₂O-titration, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and hydrogen temperature-programmed reduction (H₂-TPR). Advantageously, barium and zirconium addition enhance the HT-WGSR activity and stability of the Ce/Cu/Al₂O₃ catalyst, whereas neodymium doping has a negative effect. Regarding the correlation of catalytic performance with the characterization results, it was found that catalytic activity and stability strongly depended on their oxygen vacancy concentration and strong-metal to support interaction.

Original language	English
Pages (from-to)	24726-24737
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	46
DOIs	https://doi.org/10.1016/j.ijhydene.2020.06.278
Publication status	Published - 2020 Sep 21

Bibliographical note

Funding Information:
This work was conducted under the framework of research and development program of the Korea Institute of Energy Research ( B7-2424 ).

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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title = "The role of additives (Ba, Zr, and Nd) on Ce/Cu/Al2O3 catalyst for water-gas shift reaction",

abstract = "Enhanced catalytic performance is required to increase the efficiency of hydrogen production from waste-derived synthesis gas via the high-temperature water-gas shift reaction (HT-WGSR). Herein, the effects of barium, zirconium, and neodymium doping on the physico-chemical properties of a Ce/Cu/Al2O3 catalyst as well as its catalytic performance for HT-WGSR are investigated. Ce/Cu/Al2O3 catalysts with various additives (barium, zirconium, and neodymium) prepared via a sequential impregnation method have been characterized by using N2 adsorption-desorption isotherms, X-ray powder diffraction (XRPD), N2O-titration, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and hydrogen temperature-programmed reduction (H2-TPR). Advantageously, barium and zirconium addition enhance the HT-WGSR activity and stability of the Ce/Cu/Al2O3 catalyst, whereas neodymium doping has a negative effect. Regarding the correlation of catalytic performance with the characterization results, it was found that catalytic activity and stability strongly depended on their oxygen vacancy concentration and strong-metal to support interaction.",

author = "Na, {Hyun Suk} and Ahn, {Seon Yong} and Lee, {Yeol Lim} and Kim, {Kyoung Jin} and Jang, {Won Jun} and Shim, {Jae Oh} and Roh, {Hyun Seog}",

note = "Funding Information: This work was conducted under the framework of research and development program of the Korea Institute of Energy Research ( B7-2424 ). ",

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doi = "10.1016/j.ijhydene.2020.06.278",

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T1 - The role of additives (Ba, Zr, and Nd) on Ce/Cu/Al2O3 catalyst for water-gas shift reaction

AU - Na, Hyun Suk

AU - Ahn, Seon Yong

AU - Lee, Yeol Lim

AU - Kim, Kyoung Jin

AU - Jang, Won Jun

AU - Shim, Jae Oh

AU - Roh, Hyun Seog

N1 - Funding Information: This work was conducted under the framework of research and development program of the Korea Institute of Energy Research ( B7-2424 ).

PY - 2020/9/21

Y1 - 2020/9/21

N2 - Enhanced catalytic performance is required to increase the efficiency of hydrogen production from waste-derived synthesis gas via the high-temperature water-gas shift reaction (HT-WGSR). Herein, the effects of barium, zirconium, and neodymium doping on the physico-chemical properties of a Ce/Cu/Al2O3 catalyst as well as its catalytic performance for HT-WGSR are investigated. Ce/Cu/Al2O3 catalysts with various additives (barium, zirconium, and neodymium) prepared via a sequential impregnation method have been characterized by using N2 adsorption-desorption isotherms, X-ray powder diffraction (XRPD), N2O-titration, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and hydrogen temperature-programmed reduction (H2-TPR). Advantageously, barium and zirconium addition enhance the HT-WGSR activity and stability of the Ce/Cu/Al2O3 catalyst, whereas neodymium doping has a negative effect. Regarding the correlation of catalytic performance with the characterization results, it was found that catalytic activity and stability strongly depended on their oxygen vacancy concentration and strong-metal to support interaction.

AB - Enhanced catalytic performance is required to increase the efficiency of hydrogen production from waste-derived synthesis gas via the high-temperature water-gas shift reaction (HT-WGSR). Herein, the effects of barium, zirconium, and neodymium doping on the physico-chemical properties of a Ce/Cu/Al2O3 catalyst as well as its catalytic performance for HT-WGSR are investigated. Ce/Cu/Al2O3 catalysts with various additives (barium, zirconium, and neodymium) prepared via a sequential impregnation method have been characterized by using N2 adsorption-desorption isotherms, X-ray powder diffraction (XRPD), N2O-titration, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and hydrogen temperature-programmed reduction (H2-TPR). Advantageously, barium and zirconium addition enhance the HT-WGSR activity and stability of the Ce/Cu/Al2O3 catalyst, whereas neodymium doping has a negative effect. Regarding the correlation of catalytic performance with the characterization results, it was found that catalytic activity and stability strongly depended on their oxygen vacancy concentration and strong-metal to support interaction.

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