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The Promoting Effect of Fe Doping on Rh/CeO2 for the Ethanol Synthesis

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Abstract

The effects of Fe promotion were investigated on the activity and selectivity of Rh/CeO2 catalyst for the direct synthesis of ethanol from syngas. The catalysts were comprehensively characterized by X-ray diffraction (XRD), N2 adsorption–desorption, CO uptake, H2-TPR, temperature programmed surface reaction (TPSR), and FT-IR. XRD, CO uptake and FT-IR measurements indicated that Rh particles were well dispersed. TPSR results revealed that the addition of Fe changed CO dissociation behavior over the catalysts. FT-IR results showed that Fe promoter stabilized both linear carbonyl and gem-dicarbonyl species, which could be responsible for the improved catalytic activity. The interaction between Rh and Fe species is proposed to play a crucial role in achieving higher ethanol selectivity.

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Acknowledgments

This research was supported by a Grant from the National Natural Science Foundation of China (21276250). The helpful suggestions for the revision of the manuscript provided by the anonymous reviewers are gratefully acknowledged.

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Authors and Affiliations

  1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China

    Weigang Liu, Sheng Wang, Tianjun Sun & Shudong Wang

  2. University of Chinese Academy of Sciences, Beijing, 100039, China

    Weigang Liu

Authors
  1. Weigang Liu
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  2. Sheng Wang
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  3. Tianjun Sun
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  4. Shudong Wang
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Correspondence to Sheng Wang or Shudong Wang.

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Liu, W., Wang, S., Sun, T. et al. The Promoting Effect of Fe Doping on Rh/CeO2 for the Ethanol Synthesis. Catal Lett 145, 1741–1749 (2015). https://doi.org/10.1007/s10562-015-1577-5

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  • DOI: https://doi.org/10.1007/s10562-015-1577-5

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