The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction

Hyun Suk Na, Jae Oh Shim, Won Jun Jang, Kyung Won Jeon, Hak Min Kim, Yeol Lim Lee, Da We Lee, Seong Yeun Yoo, Jong Wook Bae, Chandrashekhar V. Rode, Hyunseog Roh

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We herein report the preparation of ceria (CeO2) via a simple precipitation method for use as a catalyst support in the water-gas shift (WGS) reaction. More specifically, we optimized the titration time required to obtain highly active CeO2-supported catalysts for the WGS reaction. As such, Cu was employed as the active metal coupled with the CeO2 support. Notably, the CeO2–0 supported Cu catalyst (where the precipitant was immediately injected into a cerium nitrate solution) exhibited the highest CO conversion at a gas hourly space velocity of 36,050 h−1. This high catalytic activity of the Cu/CeO2–0 catalyst was mainly due to its high Brunauer-Emmett-Teller (BET) surface area, enhanced Cu dispersion, high number of oxygen vacancies, and enhanced reducibility.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalCatalysis Today
Volume309
DOIs
Publication statusPublished - 2018 Jul 1

Fingerprint

Water gas shift
Titration
Catalyst supports
Catalysts
Cerium compounds
Oxygen vacancies
Cerium
Carbon Monoxide
Nitrates
Catalyst activity
Gases
Metals

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Na, Hyun Suk ; Shim, Jae Oh ; Jang, Won Jun ; Jeon, Kyung Won ; Kim, Hak Min ; Lee, Yeol Lim ; Lee, Da We ; Yoo, Seong Yeun ; Bae, Jong Wook ; Rode, Chandrashekhar V. ; Roh, Hyunseog. / The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction. In: Catalysis Today. 2018 ; Vol. 309. pp. 83-88.
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Na, HS, Shim, JO, Jang, WJ, Jeon, KW, Kim, HM, Lee, YL, Lee, DW, Yoo, SY, Bae, JW, Rode, CV & Roh, H 2018, 'The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction', Catalysis Today, vol. 309, pp. 83-88. https://doi.org/10.1016/j.cattod.2017.10.007

The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction. / Na, Hyun Suk; Shim, Jae Oh; Jang, Won Jun; Jeon, Kyung Won; Kim, Hak Min; Lee, Yeol Lim; Lee, Da We; Yoo, Seong Yeun; Bae, Jong Wook; Rode, Chandrashekhar V.; Roh, Hyunseog.

In: Catalysis Today, Vol. 309, 01.07.2018, p. 83-88.

Research output: Contribution to journalArticle

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T1 - The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction

AU - Na, Hyun Suk

AU - Shim, Jae Oh

AU - Jang, Won Jun

AU - Jeon, Kyung Won

AU - Kim, Hak Min

AU - Lee, Yeol Lim

AU - Lee, Da We

AU - Yoo, Seong Yeun

AU - Bae, Jong Wook

AU - Rode, Chandrashekhar V.

AU - Roh, Hyunseog

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AB - We herein report the preparation of ceria (CeO2) via a simple precipitation method for use as a catalyst support in the water-gas shift (WGS) reaction. More specifically, we optimized the titration time required to obtain highly active CeO2-supported catalysts for the WGS reaction. As such, Cu was employed as the active metal coupled with the CeO2 support. Notably, the CeO2–0 supported Cu catalyst (where the precipitant was immediately injected into a cerium nitrate solution) exhibited the highest CO conversion at a gas hourly space velocity of 36,050 h−1. This high catalytic activity of the Cu/CeO2–0 catalyst was mainly due to its high Brunauer-Emmett-Teller (BET) surface area, enhanced Cu dispersion, high number of oxygen vacancies, and enhanced reducibility.

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