Effect of Pretreatment with Hydrogen on the Structure and Properties of Carbon-Supported Pd-Ag-Nanoalloys for Ethylene Production by Acetylene Hydrogenation Full article
| Journal |
Molecular Catalysis
ISSN: 2468-8231 |
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| Output data | Year: 2021, Volume: 511, Article number : 111717, Pages count : 9 DOI: 10.1016/j.mcat.2021.111717 | ||||||
| Tags | Pd-Ag catalysts; Acetylene hydrogenation; Reduction in hydrogen; Active phases formation; Carbon support Sibunit | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0002 |
Abstract:
The formation process of the active component of 0.5%Pd-0.5%Ag catalysts supported on the carbon black/pyrolytic synthetic carbon composite «Sibunit», which were synthesized by joint impregnation, was studied. XRD and EXAFS studies revealed that heating of the Pd-Ag/Sibunit catalyst in hydrogen at 400–500 °C results in the formation of bimetallic solid solution Pd0.6Ag0.4. The bimetallic particles are characterized by an increased distance between neighboring palladium atoms (2.78–2.80 Å), as compared to metallic palladium and by an increase in the electron density on palladium atoms under the action of silver (according to XPS data). The synthesized samples with supported Pd-Ag nanoparticles make it possible to obtain С2Н4 by ethyne hydrogenation with the selectivity of 77–78%.
Cite:
Glyzdova D.V.
, Afonasenko T.N.
, Khramov E.V.
, Leont'eva N.N.
, Trenikhin M.V.
, Kremneva A.M.
, Shlyapin D.A.
Effect of Pretreatment with Hydrogen on the Structure and Properties of Carbon-Supported Pd-Ag-Nanoalloys for Ethylene Production by Acetylene Hydrogenation
Molecular Catalysis. 2021. V.511. 111717 :1-9. DOI: 10.1016/j.mcat.2021.111717 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_ihcp_identifier_type
Effect of Pretreatment with Hydrogen on the Structure and Properties of Carbon-Supported Pd-Ag-Nanoalloys for Ethylene Production by Acetylene Hydrogenation
Molecular Catalysis. 2021. V.511. 111717 :1-9. DOI: 10.1016/j.mcat.2021.111717 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_ihcp_identifier_type
Dates:
| Submitted: | May 1, 2021 |
| Accepted: | Jun 15, 2021 |
| Published print: | Jul 1, 2021 |
| Published online: | Jul 10, 2021 |
Identifiers:
| Web of science: | WOS:000681472000008 |
| Scopus: | 2-s2.0-85109780495 |
| Elibrary: | 46891610 |
| Chemical Abstracts: | 2021:1625691 |
| OpenAlex: | W3180052392 |
| publication_identifier.sciact_ihcp_identifier_type: | 3530 |