CO Oxidation Activity of Pt/CeO2 Catalysts Below 0 °C: Platinum Loading Effects | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

Journal

Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883

Output data

Year: 2021, Volume: 286, Article number : 119931, Pages count : 19 DOI: 10.1016/j.apcatb.2021.119931

Tags

Pt/CeO2; Low-temperature CO oxidation; Single atom; PtOx; DFT calculations

Authors

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

Affiliations

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

Funding (7)

1	Ministry of Science and Higher Education of the Russian Federation	0239-2021-0003
2	Ministry of Science and Innovation	PGC2018-093863-B-C22
3	Ministry of Economic Affairs and Digital Transformation	MDM-2017-0767
4	Ministry of Education and Vocational Training	PRX17/00348
5	Government of Catalonia	2017SGR13
6	European Cooperation in Science and Technology	CA18234
7	Government of Catalonia	2018BP00190

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 AN OpenAlex

Full text from publisher

Submitted:	Oct 5, 2020
Accepted:	Jan 18, 2021
Published online:	Jan 24, 2021
Published print:	Jun 5, 2021

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

DB	Citing
Scopus	109
Web of science	99
Elibrary	92
OpenAlex	112