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Identification of flattened Pd-Ce oxide cluster highly efficient for low temperature CO oxidation

Abstract

An improved deposition method was employed to prepare Pd/CeO2 catalyst which exhibits highly efficient activity in low temperature CO oxidation (LTO). Controlling the preparation condition, a series of different morphologies and Pd species was obtained to clarify the structure-activity relationship in the reaction. BET, XRD, STEM, HRTEM, XPS, Raman spectra, H2-TPR, CO/O2 transient pulse experiments, and in-situ DRIFTS were used to characterized the catalysts. Pd2+ incorporate in CeOx vaccany, and calcination facilitate intimate mixing of Pd, O, and Ce. HRTEM and STEM result shows that a special flattened Pd-Ce binary oxide cluster was achieved and evenly anchored on the CeO2 surface, CO adsorption and oxygen oxidation occur simultaneously on the cluster, leading to extremely well activity.

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Publication details

The article was accepted on 09 Aug 2018 and first published on 10 Aug 2018


Article type: Paper
DOI: 10.1039/C8CY01590B
Citation: Catal. Sci. Technol., 2018, Accepted Manuscript
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    Identification of flattened Pd-Ce oxide cluster highly efficient for low temperature CO oxidation

    Y. Xia, J. Ye, D. Cheng, F. Chen and X. Zhan, Catal. Sci. Technol., 2018, Accepted Manuscript , DOI: 10.1039/C8CY01590B

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