Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation Conference Abstracts
Conference |
EuropaCat-XIII: 13th European Congress on Catalysis 27-31 Aug 2017 , Florence |
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Source | 13th European Congress on Catalysis Compilation, 2017. |
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Output data | Year: 2017, Article number : SS14.3, Pages count : 2 | ||||||||||
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Abstract:
Pt/CeO2 catalysts with platinum concentration varying from 1 to 20 wt.% were synthesized by coprecipitation of platinum and ceria from a solution of platinum and cerium nitrates. It was found that higher platinum loading than 1 wt.% resulted in strong enhancement of the catalytic activity in lowtemperature CO oxidation indicating high CO conversion already at temperature as low as –10°С. This enhancement in the catalytic activity correlates with appearance of high amount of weakly bound oxygen atoms activated by incorporation of Pt2+ and Pt4+ ions into ceria lattice with formation of PtxCe1-xO2-x-δ solid solution. These experimental findings have been supported and rationalized by results of density-functional calculations performed for both bulk and nanocomposite Pt/CeO2 models [1,2].
Cite:
Boronin A.I.
, Stadnichenko A.I.
, Slavinskaya E.M.
, Kardash T.Y.
, Muravyov V.V.
, Figueroba A.
, Bruix A.
, Neyman K.M.
Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation
In compilation 13th European Congress on Catalysis. 2017. – C.320-321.
Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation
In compilation 13th European Congress on Catalysis. 2017. – C.320-321.
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