States of Pt/CeO2 Catalysts for CO Oxidation Below Room Temperature | Sciact - CRIS-system of Boreskov Institute of Catalysis

States of Pt/CeO2 Catalysts for CO Oxidation Below Room Temperature Full article

Journal

Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694

Output data

Year: 2023, Volume: 421, Pages: 285-299 Pages count : 15 DOI: 10.1016/j.jcat.2023.03.004

Tags

Pt/CeO2; low-temperature CO oxidation; PtOx clusters; Single atom

Authors

Slavinskaya Elena M. ¹ , Stadnichenko Andrey I. ¹ , Quinlivan Domínguez Jon E. ² , Stonkus Olga A. ¹ , Vorokhta Mykhailo ³ , Šmíd Břetislav ³ , Castro-Latorre Pablo ² , Bruix Albert ² , Neyman Konstantin M. ^2,4 , Boronin Andrei I. ¹

Affiliations

1	Boreskov Institute of Catalysis SB RAS, Pr. Ak. Lavrentieva 5, 630090 Novosibirsk, Russia
2	Departament de Ciència de Materials i Química Física & Institut de Quimica Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1, 08028 Barcelona, Spain
3	Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovicˇkách 2, 180 00, Prague 8, Czech Republic
4	ICREA (Institució Catalana de Recerca i Estudis Avançats), 08010 Barcelona, Spain

Funding (12)

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 Science and Innovation	PID2021-128217NB-I00
4	Ministry of Economic Affairs and Digital Transformation	MDM-2017-0767
5	Ministry of Science and Innovation	CEX2021-001202-M
6	Government of Catalonia	2018BP00190
7	Government of Catalonia	2021SGR00286
8	Government of Catalonia	2017SGR13
9	Czech Science Foundation	20-13573S
10	European Cooperation in Science and Technology	CA18234
11	European Cooperation in Science and Technology	CA21101
12	La Caixa Foundation

CO molecules can be efficiently oxidized over Pt/CeO2 catalysts, but the stability and reactivity of different states of Pt in the catalysts are still unclear. Here we combine experimental and computational methods to characterize Pt/CeO2 catalysts subjected to reductive and oxidative pre-treatments and exposed to CO oxidation reaction conditions. Particles of metallic Pt, known to be catalytically active at elevated temperature, are shown to be precursors for the formation, under operando conditions, of more stable PtOx particles that enable CO oxidation below room temperature. These PtOx particles are similarly stable to – but more active than – atomically dispersed Pt2+ species. The results and approaches presented in this study illustrate the complex response of catalytic materials to reaction conditions and pave the way for future efforts to improve Pt/CeO2 and similar catalysts using dedicated pre-treatment strategies.

Slavinskaya E.M. , Stadnichenko A.I. , Quinlivan Domínguez J.E. , Stonkus O.A. , Vorokhta M. , Šmíd B. , Castro-Latorre P. , Bruix A. , Neyman K.M. , Boronin A.I.
States of Pt/CeO2 Catalysts for CO Oxidation Below Room Temperature
Journal of Catalysis. 2023. V.421. P.285-299. DOI: 10.1016/j.jcat.2023.03.004 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Oct 21, 2022
Accepted:	Mar 1, 2023
Published online:	Mar 6, 2023
Published print:	May 1, 2023

Web of science:	WOS:000972463000001
Scopus:	2-s2.0-85151238757
Elibrary:	54069035
Chemical Abstracts:	2023:655386
OpenAlex:	W4323321946

DB	Citing
Scopus	23
Web of science	21
Elibrary	20
OpenAlex	23