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DOE OSTI · 2432574

Pd-CeO 2 catalyst facilely derived from one-pot generated Pd@Ce-BTC for low temperature CO oxidation

Xie, Shaohua·Tan, Wei·Xu, Yuhan·Wang, Chunying·Feng, Yuan·Ye, Kailong·Ma, Lu·Ehrlich, Steven N.·Li, Yaobin·Zhang, Yan·Dong, Lin·Deng, Jiguang·Liu, Fudong
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Abstract

Due to the capacity to offer abundant catalytic sites within porous solids featuring high surface areas, metal-organic frameworks (MOFs) and their derivatives have garnered considerable attention as prospective catalysts in environmental catalysis. Here, to promote the industrial application of MOFs, there is an urgent need for an effective and environmental-friendly preparation approach. Breaking through the limitation of the traditional two-step preparation method that Pd was introduced to the already prepared Ce-BTC (Pd/Ce-BTC, BTC = 1, 3, 5 benzenetricarboxylate), in this work, we present a novel one-pot solvothermal method for synthesizing the Pd material supported by Ce-BTC (Pd@Ce-BTC). After pyrolysis in N 2 flow or air flow, Pd-CeO 2 catalysts derived from Pd@Ce-BTC exhibited much higher CO oxidation activity than those from Pd/Ce-BTC. Moreover, Pd/Ce-BTC and Pd@Ce-BTC pyrolyzed in N 2 flow (Pd/Ce-BTC-N and Pd@Ce-BTC-N) could better catalyze the oxidation of CO than Pd/Ce-BTC and Pd@Ce-BTC pyrolyzed in air flow (Pd/Ce-BTC-A and Pd@Ce-BTC-A). Further characterizations revealed that the abundant surface Ce 3+ species, rich surface adsorbed oxygen species and superior redox properties were the main reasons for the superior CO oxidation activity of Pd@Ce-BTC-N.

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36 MATERIALS SCIENCECO oxidationCe-BTCOne-pot solvothermal methodPalladium catalystSurface Ce3+ species

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Xie, Shaohua, Tan, Wei, Xu, Yuhan, Wang, Chunying, Feng, Yuan, Ye, Kailong, Ma, Lu, Ehrlich, Steven N., Li, Yaobin, Zhang, Yan, Dong, Lin, Deng, Jiguang, Liu, Fudong. 2024-01-28. Pd-CeO 2 catalyst facilely derived from one-pot generated Pd@Ce-BTC for low temperature CO oxidation. https://doi.org/10.1016/j.jhazmat.2024.133632

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36 MATERIALS SCIENCE↗