Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts

Hyunseog Roh, H. S. Potdar, Ki Won Jun, Sang Yun Han, Jae Woo Kim

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Pt/Ce-ZrO2 catalysts have been designed and applied to selective CO oxidation at low temperature. Both tetragonal and cubic phase Ce-ZrO 2 supports were prepared by co-precipitation method to get high surface area materials after calcination at 500°C for 6 h in air. Selective CO oxidation was conducted using stoichiometric amounts of O2. Cubic Ce-ZrO2 supported Pt catalyst exhibited 78% CO conversion and 96% CO2 selectivity even at 60°C, while Pt/Al2O 3 catalyst showed less than 1% CO conversion at the same condition. The higher CO conversion and CO2 selectivity (to CO2 as opposed to H2O) of Pt/Ce-ZrO2 catalyst is mainly due to the high oxygen storage capacity of Ce-ZrO2 and nano-crystalline nature of cubic Ce0.8Zr0.2O2.

Original languageEnglish
Pages (from-to)203-207
Number of pages5
JournalCatalysis Letters
Volume93
Issue number3-4
Publication statusPublished - 2004 Mar 1

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Carbon Monoxide
Oxidation
Catalysts
Coprecipitation
Catalyst supports
Calcination
Temperature
Crystalline materials
Oxygen
Air

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Roh, H., Potdar, H. S., Jun, K. W., Han, S. Y., & Kim, J. W. (2004). Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts. Catalysis Letters, 93(3-4), 203-207.
Roh, Hyunseog ; Potdar, H. S. ; Jun, Ki Won ; Han, Sang Yun ; Kim, Jae Woo. / Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts. In: Catalysis Letters. 2004 ; Vol. 93, No. 3-4. pp. 203-207.
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Roh, H, Potdar, HS, Jun, KW, Han, SY & Kim, JW 2004, 'Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts', Catalysis Letters, vol. 93, no. 3-4, pp. 203-207.

Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts. / Roh, Hyunseog; Potdar, H. S.; Jun, Ki Won; Han, Sang Yun; Kim, Jae Woo.

In: Catalysis Letters, Vol. 93, No. 3-4, 01.03.2004, p. 203-207.

Research output: Contribution to journalArticle

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AB - Pt/Ce-ZrO2 catalysts have been designed and applied to selective CO oxidation at low temperature. Both tetragonal and cubic phase Ce-ZrO 2 supports were prepared by co-precipitation method to get high surface area materials after calcination at 500°C for 6 h in air. Selective CO oxidation was conducted using stoichiometric amounts of O2. Cubic Ce-ZrO2 supported Pt catalyst exhibited 78% CO conversion and 96% CO2 selectivity even at 60°C, while Pt/Al2O 3 catalyst showed less than 1% CO conversion at the same condition. The higher CO conversion and CO2 selectivity (to CO2 as opposed to H2O) of Pt/Ce-ZrO2 catalyst is mainly due to the high oxygen storage capacity of Ce-ZrO2 and nano-crystalline nature of cubic Ce0.8Zr0.2O2.

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Roh H, Potdar HS, Jun KW, Han SY, Kim JW. Low temperature selective CO oxidation in excess of H2 over Pt/Ce-ZrO2 catalysts. Catalysis Letters. 2004 Mar 1;93(3-4):203-207.