Robust palladium oxide nano-cluster catalysts using atomic ions and strong interactions for high-performance methane oxidation

Seung-Hee Ryu, Seungeun Kim, Hyunjoo Lee, Joon-Hwan Choi and Hojin Jeong ()
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Seung-Hee Ryu: Korea Institute of Materials Science (KIMS)
Seungeun Kim: Korea Advanced Institute of Science and Technology
Hyunjoo Lee: Korea Advanced Institute of Science and Technology
Joon-Hwan Choi: Korea Institute of Materials Science (KIMS)
Hojin Jeong: Korea Institute of Materials Science (KIMS)

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Optimizing metal catalyst structures to achieve desired states is vital for efficient surface reactions, yet remains challenging due to the lack of well-defined precursor materials and weak metal-support interaction. Palladium-based catalysts, when not properly tailored for complete methane oxidation exhibit insufficient performance. Herein, we fabricate Pd oxide nano-clusters supported on SSZ-13 using atomic ions with strong metal-support interaction (SMSI). Steam treatment of Pd/SSZ-13 transforms Pd particles into ions and induces SMSI. Subsequently, CO reduction and O2 oxidation yield mildly sintered Pd oxide nano-clusters firmly anchored on extra-framework Alpenta sites of SSZ-13, facilitating superior activity. The robustness from SMSI prevents irreversible deactivation, and water-resistance by complete dehydration suppresses reversible degradation in wet conditions. This catalyst exhibits high performance in bench-scale reactions using monolith catalysts, ensuring applicability for industrial methane abatement. The results demonstrate that sequential treatment to Pd/SSZ-13 offers a promising approach for tailoring metal structures to enable high-performance methane oxidation.

Date: 2024
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DOI: 10.1038/s41467-024-52698-4

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