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 ).

Publisher Copyright:
© 2020 Hydrogen Energy Publications LLC

All Science Journal Classification (ASJC) codes

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

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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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 ). Publisher Copyright: {\textcopyright} 2020 Hydrogen Energy Publications LLC",

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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 ). Publisher Copyright: © 2020 Hydrogen Energy Publications LLC

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.

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