An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al2O3 Catalyst during Reductive and Oxidative Treatments In Situ

An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al2O3 Catalyst during Reductive and Oxidative Treatments In Situ Full article

Journal

Catalysts
ISSN: 2073-4344

Output data

Year: 2021, Volume: 11, Number: 7, Article number : 859, Pages count : DOI: 10.3390/catal11070859

Authors

Smirnova Nadezhda S. ¹ , Khramov Evgeny V. ² , Baeva Galina N. ³ , Markov Pavel V. ³ , Bukhtiyarov Andrey V. ⁴ , Zubavichus Yan V. ⁴ , Stakheev Aleksander Y. ³

Affiliations

1	Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky Prospect 31, 119991 Moscow, Russia
2	National Research Center «Kurchatov Institute», Akademika Kurchatova pl. 1, 123182 Moscow, Russia
3	N.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospect 47, 119991 Moscow, Russia
4	Synchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis SB RAS, Nikolskiy Prospect 1, 630559 Koltsovo, Russia

A series of oxidative treatments of PdIn-supported intermetallic nanoparticles at different temperatures were performed. The bulk and surface structure of catalyst during phase transformation was investigated by bulk- and surface-sensitive techniques (in situ XAFS, DRIFTS of adsorbed CO). It was found that comparison of palladium and indium fractions in bulk and on the surface suggests the formation of a «core-shell» structure. According to obtained results, the core consists of In-depleted intermetallic compound or inhomogeneous bimetallic phase with the inner core of metallic Pd, when a mixture of indium oxide, metallic palladium and small part of PdIn is present on the surface.

Smirnova N.S. , Khramov E.V. , Baeva G.N. , Markov P.V. , Bukhtiyarov A.V. , Zubavichus Y.V. , Stakheev A.Y.
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al2O3 Catalyst during Reductive and Oxidative Treatments In Situ
Catalysts. 2021. V.11. N7. 859 . DOI: 10.3390/catal11070859 WOS Scopus OpenAlex

≡ Web of science:	WOS:000678198100001
≡ Scopus:	2-s2.0-85110094801
≡ OpenAlex:	W3187009154