An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ
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 fou...
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MDPI AG
2021-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/7/859 |
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doaj-0c2a2d02ed4c4dbc8a801357d581c9332021-07-23T13:34:25ZengMDPI AGCatalysts2073-43442021-07-011185985910.3390/catal11070859An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In SituNadezhda S. Smirnova0Evgeny V. Khramov1Galina N. Baeva2Pavel V. Markov3Andrey V. Bukhtiyarov4Yan V. Zubavichus5Aleksander Y. Stakheev6Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky Prospect 31, 119991 Moscow, RussiaNational Research Center «Kurchatov Institute», Akademika Kurchatova pl. 1, 123182 Moscow, RussiaN.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospect 47, 119991 Moscow, RussiaN.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospect 47, 119991 Moscow, RussiaSynchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis SB RAS, Nikolskiy Prospect 1, 630559 Koltsovo, RussiaSynchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis SB RAS, Nikolskiy Prospect 1, 630559 Koltsovo, RussiaN.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospect 47, 119991 Moscow, RussiaA 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.https://www.mdpi.com/2073-4344/11/7/859intermetallic compoundsPdIn catalystsin situ XAFS spectroscopyDRIFTS of adsorbed CO |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Nadezhda S. Smirnova Evgeny V. Khramov Galina N. Baeva Pavel V. Markov Andrey V. Bukhtiyarov Yan V. Zubavichus Aleksander Y. Stakheev |
| spellingShingle |
Nadezhda S. Smirnova Evgeny V. Khramov Galina N. Baeva Pavel V. Markov Andrey V. Bukhtiyarov Yan V. Zubavichus Aleksander Y. Stakheev An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ Catalysts intermetallic compounds PdIn catalysts in situ XAFS spectroscopy DRIFTS of adsorbed CO |
| author_facet |
Nadezhda S. Smirnova Evgeny V. Khramov Galina N. Baeva Pavel V. Markov Andrey V. Bukhtiyarov Yan V. Zubavichus Aleksander Y. Stakheev |
| author_sort |
Nadezhda S. Smirnova |
| title |
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ |
| title_short |
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ |
| title_full |
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ |
| title_fullStr |
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ |
| title_full_unstemmed |
An Investigation into the Bulk and Surface Phase Transformations of Bimetallic Pd-In/Al<sub>2</sub>O<sub>3</sub> Catalyst during Reductive and Oxidative Treatments In Situ |
| title_sort |
investigation into the bulk and surface phase transformations of bimetallic pd-in/al<sub>2</sub>o<sub>3</sub> catalyst during reductive and oxidative treatments in situ |
| publisher |
MDPI AG |
| series |
Catalysts |
| issn |
2073-4344 |
| publishDate |
2021-07-01 |
| description |
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. |
| topic |
intermetallic compounds PdIn catalysts in situ XAFS spectroscopy DRIFTS of adsorbed CO |
| url |
https://www.mdpi.com/2073-4344/11/7/859 |
| work_keys_str_mv |
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