CO Oxidation Activity of Pt/CeO2 Catalysts Below 0 °C: Platinum Loading Effects

CO Oxidation Activity of Pt/CeO2 Catalysts Below 0 °C: Platinum Loading Effects Научная публикация

Журнал

Applied Catalysis B: Environmental
ISSN: 0926-3373

Вых. Данные

Год: 2021, Том: 286, Номер статьи : 119931, Страниц : 19 DOI: 10.1016/j.apcatb.2021.119931

Авторы

Boronin Andrei I. ¹ , Slavinskaya Elena M. ¹ , Figueroba Alberto ² , Stadnichenko Andrey I. ¹ , Kardash Tatyana Yu. ¹ , Stonkus Olga A. ¹ , Fedorova Elizaveta A. ¹ , Muravev Valerii V. ³ , Svetlichnyi Valery A. ⁴ , Bruix Albert ^2,5 , Neyman Konstantin M. ^2,6

Организации

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2	Departament de Ciència de Materials i Química Física and Institut de Quimica Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Spain
3	Department of Chemical Engineering and Chemistry, Inorganic Materials & Catalysis, Eindhoven University of Technology, Netherlands
4	Tomsk State University, Tomsk, Russia
5	Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Germany
6	ICREA (Institució Catalana de Recerca i Estudis Avançats), Barcelona, Spain

Reducing the operating temperature of oxidation catalysts is important for designing energy efficient processes, extending catalyst lifetime, and abating pollutants, especially in cold climates. Herein, high CO oxidation activity at sub-ambient temperatures is reported for Pt/CeO2 catalysts with high content of Pt in the form of dispersed Pt2+ and Pt4+ centers. Whereas the reference 1 wt%Pt catalyst was active for CO oxidation only above 100ᵒC, the 8 and 20 wt%Pt catalysts converted 60 and 90 % of CO, respectively, below 0ᵒC. Ionic platinum was shown to facilitate oxygen release from ceria and lower the light-off temperature of the reaction occurring through the Mars-van-Krevelen mechanism. However, the remarkable activity observed at sub-ambient temperatures for the ≥8 wt%Pt catalysts is proposed to involve O2 and CO reactants weakly adsorbed on PtOx clusters. The synergies between ionic platinum and nanostructured ceria reported in this work advance the knowledge-driven design of catalysts for low-temperature oxidation reactions.

Boronin A.I. , Slavinskaya E.M. , Figueroba A. , Stadnichenko A.I. , Kardash T.Y. , Stonkus O.A. , Fedorova E.A. , Muravev V.V. , Svetlichnyi V.A. , Bruix A. , Neyman K.M.
CO Oxidation Activity of Pt/CeO2 Catalysts Below 0 °C: Platinum Loading Effects

Applied Catalysis B: Environmental. 2021. V.286. 119931 :1-19. DOI: 10.1016/j.apcatb.2021.119931 WOS Scopus РИНЦ CAPlus OpenAlex Sciact

Полный текст от издателя

Поступила в редакцию:	5 окт. 2020 г.
Принята к публикации:	18 янв. 2021 г.
Опубликована online:	24 янв. 2021 г.
Опубликована в печати:	5 июн. 2021 г.

Web of science:	WOS:000621629900004
Scopus:	2-s2.0-85100374835
РИНЦ:	44959222
Chemical Abstracts:	2021:334177
OpenAlex:	W3122648288
Sciact:	39820

БД	Цитирований
Scopus	116
OpenAlex	122