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Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on alumina

Author

Listed:
  • Eric J. Peterson

    (University of New Mexico)

  • Andrew T. DeLaRiva

    (University of New Mexico)

  • Sen Lin

    (Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University)

  • Ryan S. Johnson

    (University of New Mexico)

  • Hua Guo

    (University of New Mexico)

  • Jeffrey T. Miller

    (Chemical Science and Engineering, Argonne National Laboratory)

  • Ja Hun Kwak

    (Institute for Integrated Catalysis, Pacific Northwest National Laboratory
    Present address: Department of Chemical Engineering, UNIST, Ulsan, Korea)

  • Charles H. F. Peden

    (Institute for Integrated Catalysis, Pacific Northwest National Laboratory)

  • Boris Kiefer

    (New Mexico State University)

  • Lawrence F. Allard

    (Oak Ridge National Laboratory)

  • Fabio H. Ribeiro

    (School of Chemical Engineering, Purdue University)

  • Abhaya K. Datye

    (University of New Mexico)

Abstract

Catalysis by single isolated atoms of precious metals has attracted much recent interest, as it promises the ultimate in atom efficiency. Most previous reports are on reducible oxide supports. Here we show that isolated palladium atoms can be catalytically active on industrially relevant γ-alumina supports. The addition of lanthanum oxide to the alumina, long known for its ability to improve alumina stability, is found to also help in the stabilization of isolated palladium atoms. Aberration-corrected scanning transmission electron microscopy and operando X-ray absorption spectroscopy confirm the presence of intermingled palladium and lanthanum on the γ-alumina surface. Carbon monoxide oxidation reactivity measurements show onset of catalytic activity at 40 °C. The catalyst activity can be regenerated by oxidation at 700 °C in air. The high-temperature stability and regenerability of these ionic palladium species make this catalyst system of potential interest for low-temperature exhaust treatment catalysts.

Suggested Citation

  • Eric J. Peterson & Andrew T. DeLaRiva & Sen Lin & Ryan S. Johnson & Hua Guo & Jeffrey T. Miller & Ja Hun Kwak & Charles H. F. Peden & Boris Kiefer & Lawrence F. Allard & Fabio H. Ribeiro & Abhaya K. D, 2014. "Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on alumina," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5885
    DOI: 10.1038/ncomms5885
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    Cited by:

    1. Weiwei Fu & Jin Wan & Huijuan Zhang & Jian Li & Weigen Chen & Yuke Li & Zaiping Guo & Yu Wang, 2022. "Photoinduced loading of electron-rich Cu single atoms by moderate coordination for hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Vinson Liao & Maximilian Cohen & Yifan Wang & Dionisios G. Vlachos, 2023. "Deducing subnanometer cluster size and shape distributions of heterogeneous supported catalysts," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    3. Bing Deng & Paul A. Advincula & Duy Xuan Luong & Jingan Zhou & Boyu Zhang & Zhe Wang & Emily A. McHugh & Jinhang Chen & Robert A. Carter & Carter Kittrell & Jun Lou & Yuji Zhao & Boris I. Yakobson & Y, 2022. "High-surface-area corundum nanoparticles by resistive hotspot-induced phase transformation," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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