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Effect of CeO2 on CO removal over CeO2-modified Ni catalyst in CO-rich syngas

  • Catalysis, Reaction Engineering
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Abstract

A CeO2-modified Ni catalyst has been studied as a substitute for Ni bulk catalyst in a CO removal reaction using various characterization methods. CO removal was enhanced slightly and presented at lower reaction temperatures following promotion of CeO2 on Ni. The enhanced ability to reduce CO was mainly a result of methanation rather than WGS during a CO removal reaction. Based on X-ray diffraction and temperature-programmed reduction, CeO2 appeared to change the Ni surface properties. Because the bond strength between C and O atoms in CO was weakened by the surface oxygen of CeO2 on Ni, the CeO2-promoted Ni catalyst showed higher CO conversion and lower selectivity to WGS than Ni bulk catalyst.

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Authors and Affiliations

  1. School of Chemical and Biological Engineering & Research Center for Energy Conversion and Storage, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-744, Korea

    Sung Ho Kim, Weon-Doo Lee & Ho-In Lee

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  1. Sung Ho Kim
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  2. Weon-Doo Lee
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  3. Ho-In Lee
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Correspondence to Ho-In Lee.

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This article is dedicated to Prof. Gon Seo on the occasion of his retirement from Chonnam National University.

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Kim, S.H., Lee, WD. & Lee, HI. Effect of CeO2 on CO removal over CeO2-modified Ni catalyst in CO-rich syngas. Korean J. Chem. Eng. 30, 860–863 (2013). https://doi.org/10.1007/s11814-013-0007-x

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  • DOI: https://doi.org/10.1007/s11814-013-0007-x

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