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Near 100% CO selectivity in nanoscaled iron-based oxygen carriers for chemical looping methane partial oxidation

Author

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  • Yan Liu

    (The Ohio State University)

  • Lang Qin

    (The Ohio State University)

  • Zhuo Cheng

    (The Ohio State University)

  • Josh W. Goetze

    (The Ohio State University)

  • Fanhe Kong

    (The Ohio State University)

  • Jonathan A. Fan

    (Stanford University)

  • Liang-Shih Fan

    (The Ohio State University)

Abstract

Chemical looping methane partial oxidation provides an energy and cost effective route for methane utilization. However, there is considerable CO2 co-production in current chemical looping systems, rendering a decreased productivity in value-added fuels or chemicals. In this work, we demonstrate that the co-production of CO2 can be dramatically suppressed in methane partial oxidation reactions using iron oxide nanoparticles embedded in mesoporous silica matrix. We experimentally obtain near 100% CO selectivity in a cyclic redox system at 750–935 °C, which is a significantly lower temperature range than in conventional oxygen carrier systems. Density functional theory calculations elucidate the origins for such selectivity and show that low-coordinated lattice oxygen atoms on the surface of nanoparticles significantly promote Fe–O bond cleavage and CO formation. We envision that embedded nanostructured oxygen carriers have the potential to serve as a general materials platform for redox reactions with nanomaterials at high temperatures.

Suggested Citation

  • Yan Liu & Lang Qin & Zhuo Cheng & Josh W. Goetze & Fanhe Kong & Jonathan A. Fan & Liang-Shih Fan, 2019. "Near 100% CO selectivity in nanoscaled iron-based oxygen carriers for chemical looping methane partial oxidation," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13560-0
    DOI: 10.1038/s41467-019-13560-0
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    Cited by:

    1. Michael High & Clemens F. Patzschke & Liya Zheng & Dewang Zeng & Oriol Gavalda-Diaz & Nan Ding & Ka Ho Horace Chien & Zili Zhang & George E. Wilson & Andrey V. Berenov & Stephen J. Skinner & Kyra L. S, 2022. "Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage," Nature Communications, Nature, vol. 13(1), pages 1-14, December.
    2. Xianhui Wang & Chunlei Pei & Zhi-Jian Zhao & Sai Chen & Xinyu Li & Jiachen Sun & Hongbo Song & Guodong Sun & Wei Wang, & Xin Chang & Xianhua Zhang & Jinlong Gong, 2023. "Coupling acid catalysis and selective oxidation over MoO3-Fe2O3 for chemical looping oxidative dehydrogenation of propane," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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