Effect of reductive treatment duration on the structure and properties of Pd−Zn/C catalysts for liquid-phase acetylene hydrogenation Full article
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ChemCatChem
ISSN: 1867-3880 , E-ISSN: 1867-3899 |
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| Output data | Year: 2022, Volume: 14, Number: 21, Article number : e202200893, Pages count : 8 DOI: 10.1002/cctc.202200893 | ||||||
| Tags | bimetallic catalyst, palladium, EXAFS spectroscopy, hydrogenation, PdZn | ||||||
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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:
Structural features of bimetallic Pd−Zn catalysts supported on Sibunit carbon material were studied by EXAFS, TEM, XRD and XPS methods, depending on the heat treatment conditions in hydrogen. It was found that supported particles of PdZn intermetallic compound of tetragonal structure are formed in all samples. An increase in the duration of catalyst reduction in H2 at 500 °C from 1 to 20 hours leads to an increase in the amount of PdZn intermetallic particles (dav=2–3 nm), which is confirmed by the increasing of the Pd−Zn coordination number from 2.4 to 4.3 and by the decreasing of the surface Pd0/PdZn ratio from 0.63 to 0.18. The observed changes in the nature and structure of active sites provide an increase in the ethylene selectivity of Pd−Zn/C catalysts in liquid-phase acetylene hydrogenation.
Cite:
Glyzdova D.V.
, Afonasenko T.N.
, Khramov E.V.
, Trenikhin M.V.
, Prosvirin I.P.
, Shlyapin D.A.
Effect of reductive treatment duration on the structure and properties of Pd−Zn/C catalysts for liquid-phase acetylene hydrogenation
ChemCatChem. 2022. V.14. N21. e202200893 :1-8. DOI: 10.1002/cctc.202200893 WOS Scopus РИНЦ OpenAlex
Effect of reductive treatment duration on the structure and properties of Pd−Zn/C catalysts for liquid-phase acetylene hydrogenation
ChemCatChem. 2022. V.14. N21. e202200893 :1-8. DOI: 10.1002/cctc.202200893 WOS Scopus РИНЦ OpenAlex
Dates:
| Submitted: | Jul 14, 2022 |
| Accepted: | Sep 13, 2022 |
| Published online: | Oct 7, 2022 |
| Published print: | Nov 8, 2022 |
Identifiers:
| Web of science: | WOS:000864931300001 |
| Scopus: | 2-s2.0-85139505293 |
| Elibrary: | 52253191 |
| OpenAlex: | W4295803913 |