Robust palladium oxide nano-cluster catalysts using atomic ions and strong interactions for high-performance methane oxidation
Year: 2024
Type: article
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. Optimizing metal catalyst structures to achieve specific states is crucial for efficient surface reactions but remains difficult due to the absence of well-defined precursor materials and weak metal-support interactions. Here the authors design Pd oxide nanoclusters on SSZ-13 as optimal catalysts for complete CH4 oxidation, leveraging atomic ions and strong interactions.
Source: Nature Communications
Authors: Seung-Hee Ryu, Seungeun Kim, Hyunjoo Lee, Joon-Hwan Choi, Hojin Jeong
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,790
Funders: Pohang University of Science and Technology, Ulsan National Institute of Science and Technology, Ministry of Science, ICT and Future Planning, Korea Research Council for Industrial Science and Technology, Korea Advanced Institute of Science and Technology, Korea Institute of Materials Science
Awards: G6914460139, G721735157
OpenAlex ID: W4402922801