Effect of preparation method on the oxygen vacancy concentration of CeO2-promoted Cu/γ-Al2O3 catalysts for HTS reactions

Jae Oh Shim; Hyun Suk Na; Ajay Jha; Won Jun Jang; Dae Woon Jeong; In Wook Nah; Byong Hun Jeon; Hyun Seog Roh

doi:10.1016/j.cej.2016.08.030

Effect of preparation method on the oxygen vacancy concentration of CeO₂-promoted Cu/γ-Al₂O₃ catalysts for HTS reactions

Jae Oh Shim, Hyun Suk Na, Ajay Jha, Won Jun Jang, Dae Woon Jeong, In Wook Nah, Byong Hun Jeon, Hyun Seog Roh

Division of Environmental Engineering

Research output: Contribution to journal › Article

37 Citations (Scopus)

Abstract

To investigate the effect of preparation method on the CeO₂-promoted Cu/γ-Al₂O₃ catalyst for the high-temperature water gas shift reaction over simulated waste-derived synthesis gas, Ce/Cu/γ-Al₂O₃, Ce-Cu/γ-Al₂O₃, Cu/Ce/γ-Al₂O₃, and Cu/γ-Al₂O₃ catalysts were applied to the target reaction. Among the prepared catalysts, Ce/Cu/γ-Al₂O₃ showed the highest activity due to its high oxygen vacancy concentration and large amount of reduced Cu species, supported by XPS, Raman, and PL analysis. Additionally, TPR results showed that the catalyst preparation method effected the transformation of bulk CuO species to highly dispersed Cu-species, which influenced the catalyst activity.

Original language	English
Pages (from-to)	908-915
Number of pages	8
Journal	Chemical Engineering Journal
Volume	306
DOIs	https://doi.org/10.1016/j.cej.2016.08.030
Publication status	Published - 2016 Dec 15

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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Shim, J. O., Na, H. S., Jha, A., Jang, W. J., Jeong, D. W., Nah, I. W., Jeon, B. H., & Roh, H. S. (2016). Effect of preparation method on the oxygen vacancy concentration of CeO₂-promoted Cu/γ-Al₂O₃ catalysts for HTS reactions. Chemical Engineering Journal, 306, 908-915. https://doi.org/10.1016/j.cej.2016.08.030

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title = "Effect of preparation method on the oxygen vacancy concentration of CeO2-promoted Cu/γ-Al2O3 catalysts for HTS reactions",

abstract = "To investigate the effect of preparation method on the CeO2-promoted Cu/γ-Al2O3 catalyst for the high-temperature water gas shift reaction over simulated waste-derived synthesis gas, Ce/Cu/γ-Al2O3, Ce-Cu/γ-Al2O3, Cu/Ce/γ-Al2O3, and Cu/γ-Al2O3 catalysts were applied to the target reaction. Among the prepared catalysts, Ce/Cu/γ-Al2O3 showed the highest activity due to its high oxygen vacancy concentration and large amount of reduced Cu species, supported by XPS, Raman, and PL analysis. Additionally, TPR results showed that the catalyst preparation method effected the transformation of bulk CuO species to highly dispersed Cu-species, which influenced the catalyst activity.",

author = "Shim, {Jae Oh} and Na, {Hyun Suk} and Ajay Jha and Jang, {Won Jun} and Jeong, {Dae Woon} and Nah, {In Wook} and Jeon, {Byong Hun} and Roh, {Hyun Seog}",

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T1 - Effect of preparation method on the oxygen vacancy concentration of CeO2-promoted Cu/γ-Al2O3 catalysts for HTS reactions

AU - Shim, Jae Oh

AU - Na, Hyun Suk

AU - Jha, Ajay

AU - Jang, Won Jun

AU - Jeong, Dae Woon

AU - Nah, In Wook

AU - Jeon, Byong Hun

AU - Roh, Hyun Seog

PY - 2016/12/15

Y1 - 2016/12/15

N2 - To investigate the effect of preparation method on the CeO2-promoted Cu/γ-Al2O3 catalyst for the high-temperature water gas shift reaction over simulated waste-derived synthesis gas, Ce/Cu/γ-Al2O3, Ce-Cu/γ-Al2O3, Cu/Ce/γ-Al2O3, and Cu/γ-Al2O3 catalysts were applied to the target reaction. Among the prepared catalysts, Ce/Cu/γ-Al2O3 showed the highest activity due to its high oxygen vacancy concentration and large amount of reduced Cu species, supported by XPS, Raman, and PL analysis. Additionally, TPR results showed that the catalyst preparation method effected the transformation of bulk CuO species to highly dispersed Cu-species, which influenced the catalyst activity.

AB - To investigate the effect of preparation method on the CeO2-promoted Cu/γ-Al2O3 catalyst for the high-temperature water gas shift reaction over simulated waste-derived synthesis gas, Ce/Cu/γ-Al2O3, Ce-Cu/γ-Al2O3, Cu/Ce/γ-Al2O3, and Cu/γ-Al2O3 catalysts were applied to the target reaction. Among the prepared catalysts, Ce/Cu/γ-Al2O3 showed the highest activity due to its high oxygen vacancy concentration and large amount of reduced Cu species, supported by XPS, Raman, and PL analysis. Additionally, TPR results showed that the catalyst preparation method effected the transformation of bulk CuO species to highly dispersed Cu-species, which influenced the catalyst activity.

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