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, Hyun Seog Roh

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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

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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    Na, H. S., Shim, J. O., Jang, W. J., Jeon, K. W., Kim, H. M., Lee, Y. L., Lee, D. W., Yoo, S. Y., Bae, J. W., Rode, C. V., & Roh, H. S. (2018). The effect of titration time on the catalytic performance of Cu/CeO2 catalysts for water-gas shift reaction. Catalysis Today, 309, 83-88. https://doi.org/10.1016/j.cattod.2017.10.007