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An Extremely Active Pt/Carbon Nano-Tube Catalyst for Selective Oxidation of CO in H2 at Room Temperature

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Abstract

Pt catalyst supported on carbon nano-tube (CNT) was extremely active for the selective oxidation of CO in H2 at room temperature, which was remarked contrast to the Pt supported on an active carbon (Vulcan carbon) and a graphite powder. Complete oxidation of CO was attained on a 5 wt.% Pt/CNT catalyst (0.8 g) at ca. 40 °C when the O2/CO ratio in a flow of H2 (20 mL/min) + CO (3.0 mL/min) + O2 + N2 was adjusted to be larger than 0.75 at the total flow rate of 100 mL/min. Specific activity of the Pt/CNT catalyst was explained by efficient provision of reactant molecules diffusing on CNT surface to Pt particles.

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Acknowledgments

Authors appreciate Kawaken Co. and Tanaka Kikinzoku Co. for their support of this work. K. Tanaka would like to express his great acknowledgement to Mr. Mitsushi Umino of Astech Co. for his long time encouragement.

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Authors and Affiliations

  1. Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama, 369-0293, Japan

    Ken-ichi Tanaka, Masashi Shou & Tokio Hagiwara

  2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen, 361005, China

    Hongbin Zhang & Youzhu Yuan

  3. Catalysis Research Center, Hokkaido University, Sapporo, 001-0021, Japan

    Atsushi Fukuoka

  4. Graduate School of Pure and Applied Science, Tsukuba University, Tennoudai 1-1-1, sukuba, Tsukuba, Ibaraki, 304-8573, Japan

    Junji Nakamura

  5. Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan

    Daling Lu

Authors
  1. Ken-ichi Tanaka
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  2. Masashi Shou
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  3. Hongbin Zhang
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  4. Youzhu Yuan
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  5. Tokio Hagiwara
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  6. Atsushi Fukuoka
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  7. Junji Nakamura
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  8. Daling Lu
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Correspondence to Ken-ichi Tanaka.

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Tanaka, Ki., Shou, M., Zhang, H. et al. An Extremely Active Pt/Carbon Nano-Tube Catalyst for Selective Oxidation of CO in H2 at Room Temperature. Catal Lett 126, 89–95 (2008). https://doi.org/10.1007/s10562-008-9581-7

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  • DOI: https://doi.org/10.1007/s10562-008-9581-7

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