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Open AccessArticle

Pt-Au/MOx-CeO2 (M = Mn, Fe, Ti) Catalysts for the Co-Oxidation of CO and H2 at Room Temperature

by Xiaowei Hong 1, Ye Sun 1, Tianle Zhu 1,* and Zhiming Liu 2,*
School of Space and Environment, Beihang University, Beijing 100191, China
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Authors to whom correspondence should be addressed.
Academic Editor: Nikolaos Dimitratos
Molecules 2017, 22(3), 351;
Received: 9 January 2017 / Revised: 17 February 2017 / Accepted: 21 February 2017 / Published: 27 February 2017
(This article belongs to the Special Issue Bimetallic Catalysis)
A series of nanostructured Pt-Au/MOx-CeO2 (M = Mn, Fe, Ti) catalysts were prepared and their catalytic performance for the co-oxidation of carbon monoxide (CO) and hydrogen (H2) were evaluated at room temperature. The results showed that MOx promoted the CO oxidation of Pt-Au/CeO2, but only the TiO2 could enhance co-oxidation of CO and H2 over Pt-Au/CeO2. Related characterizations were conducted to clarify the promoting effect of MOx. Temperature-programmed reduction of hydrogen (H2-TPR) and X-ray photoelectron spectroscopy (XPS) results suggested that MOx could improve the charge transfer from Au sites to CeO2, resulting in a high concentration of Ce3+ and cationic Au species which benefits for the CO oxidation. In-situ diffuse reflectance infrared Fourier transform spectroscopy (In-situ DRIFTS) results indicated that TiO2 could facilitate the oxidation of H2 over the Pt-Au/TiO2-CeO2 catalyst. View Full-Text
Keywords: CO; H2; Co-oxidation; Pt-Au/MOx-CeO2; Room temperature CO; H2; Co-oxidation; Pt-Au/MOx-CeO2; Room temperature
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MDPI and ACS Style

Hong, X.; Sun, Y.; Zhu, T.; Liu, Z. Pt-Au/MOx-CeO2 (M = Mn, Fe, Ti) Catalysts for the Co-Oxidation of CO and H2 at Room Temperature. Molecules 2017, 22, 351.

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