Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation - Conference attendances | Sciact - CRIS-system of Boreskov Institute of Catalysis

Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation Conference attendances

Language

Английский

Participant type

Устный

Conference

EuropaCat-XIII: 13th European Congress on Catalysis
27-31 Aug 2017 , Florence

Authors

Boronin A.I. ^1,2 , Stadnichenko A.I. ^1,2 , Slavinskaya E.M. ^1,2 , Kardash T.Yu. ^1,2 , Muravyov V.V. ² , Figueroba A. ³ , Bruix A. ⁴ , Neyman K.M. ^3,5

Affiliations

1	Boreskov Institute of Catalysis SB RAS
2	Novosibirsk National Research University
3	University of Barcelona
4	Aarhus University
5	Catalan Institution for Research and Advanced Studies

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].

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
EuropaCat-XIII: 13th European Congress on Catalysis 27-31 Aug 2017