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Spinel CuFe2O4: a precursor for copper catalyst with high thermal stability and activity

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Abstract.

Spinel CuFe2O4 has been studied as a precursor for copper catalyst. The spinel CuFe2O4 was effectively formed on the SiO2 by calcination in air at 800 °C with the atomic ratio of Fe/Cu  = 2. The spinel CuFe2O4 on the SiO2 was reduced to fine dispersion of Cu and Fe3O4 particles by the H2 reduction at 240 °C. After H2 reduction at 600 °C, sintering of Cu particles over the CuFe2O4/SiO2 (Fe/Cu  = 2) was inhibited significantly, while fatal sintering of Cu particles over the Cu/SiO2 (Fe/Cu  = 0) occurred. The CuFe2O4/SiO2 catalyst exhibited much higher activity and thermal stability for steam reforming of methanol (SRM), compared with the Cu/SiO2 catalyst. The spinel CuFe2O4 on the SiO2 can be regenerated after an intentional sintering treatment by calcination in air at 800 °C where the activity is also restored completely. Based on these findings, we propose that spinel CuFe2O4 is an effective precursor for a high performance copper catalyst in which the immiscible interaction between Cu and Fe (or Fe oxide) plays an important role in the stabilization of Cu particles.

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Authors and Affiliations

  1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan

    Satoshi Kameoka & An Pang Tsai

  2. Graduated School of Materials Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-0022, Japan

    Toyokazu Tanabe

  3. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan

    An Pang Tsai

Authors
  1. Satoshi Kameoka
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  2. Toyokazu Tanabe
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  3. An Pang Tsai
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Correspondence to Satoshi Kameoka.

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Kameoka, S., Tanabe, T. & Tsai, A.P. Spinel CuFe2O4: a precursor for copper catalyst with high thermal stability and activity. Catal Lett 100, 89–93 (2005). https://doi.org/10.1007/s10562-004-3091-z

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  • DOI: https://doi.org/10.1007/s10562-004-3091-z

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