Surface Structure of Pt–Ni–Cr/C Catalysts

Surface Structure of Pt–Ni–Cr/C Catalysts Full article

Journal

Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X

Output data

Year: 2021, Volume: 95, Number: 3, Pages: 523-529 Pages count : 7 DOI: 10.1134/s0036024421030067

Authors

Bogdan T.V. ^1,2 , Kalenchuk A.N. ^1,2 , Maksimov S.V. ² , Bogdan V.I. ^1,2

Affiliations

1	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119334, Moscow, Russia
2	Department of Chemistry, Moscow State University, 119991, Moscow, Russia

The composition and structure of the surface phases of catalysts based on Pt, Ni, and Cr (platinum, bi- and trimetallic) supported on a Sibunit carrier are studied via TEM and EDS. The structure of the catalysts before and after reductive hydrogenation are compared. It is found that the metal in the Pt/C system is in a highly dispersed state, mainly in an oxidized form. In bimetallic and ternary catalysts, the surface contains metallic and oxide components; on the surface of Pt–Ni catalyst, the metal phase is more pronounced than with Ni–Cr and Pt–Ni–Cr. Nickel-based catalysts contain large metal particles (up to 30 nm). After reductive hydrogenation, an increase in dispersion and a reduction in the crystallinity of metal particles is observed in all of the studied systems.

Bogdan T.V. , Kalenchuk A.N. , Maksimov S.V. , Bogdan V.I.
Surface Structure of Pt–Ni–Cr/C Catalysts
Russian Journal of Physical Chemistry A. 2021. V.95. N3. P.523-529. DOI: 10.1134/s0036024421030067 WOS Scopus OpenAlex

≡ Web of science:	WOS:000636958400011
≡ Scopus:	2-s2.0-85101104790
≡ OpenAlex:	W3145287738