Activation of Oxygen in the Ceria Lattice by Incorporation of Platinum in Pt/CeO2 Catalysts for Low-Temperature CO Oxidation | Sciact - CRIS-система Института катализа

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

Конференция

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

Сборник

13th European Congress on Catalysis
Сборник, 2017.

Вых. Данные

Год: 2017, Номер статьи : SS14.3, Страниц : 2

Авторы

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

Организации

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Russia
2	Novosibirsk State University, Novosibirsk 630090, Russia
3	Departament de Ciència dels Materials i Química Física & Institut de Química Teòrica i Computacional, Universitat de Barcelona, C/Martí i Franquès 1, 08028 Barcelona, Spain
4	Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
5	ICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain

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
В сборнике 13th European Congress on Catalysis. 2017. – C.320-321.

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