Hydrogenation of Acetylene over Pd–Ag/Sibunit Catalysts: Effect of the Deposition Sequence of Active Component Precursors Full article
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Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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| Output data | Year: 2023, Volume: 63, Number: 8, Pages: 982-992 Pages count : 11 DOI: 10.1134/S0965544123060129 | ||
| Tags | bimetallic catalysts, Pd–Ag, Sibunit carbon support, selective hydrogenation of acetylene | ||
| 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 study investigates interactions between palladium and silver in Pd–Ag bimetallic catalysts supported on a mesoporous carbon material Sibunit and, in particular, the dependence of these interactions on the deposition sequence of the metal precursors. Using XRD and TEM results, it was shown that impregnating the support with an aqueous solution that contained nitrate salts of both metals, followed by hydrogen treatment at 500°C, generates uniformly sized Pd0.6Ag0.4 particles (dav = 5.6 nm). These particles exhibit high selectivity (79%) in the reaction of acetylene hydrogenation to ethylene. The catalysts synthesized by sequential impregnation of the support with solutions of Pd and Ag nitrates interleaved with heat treatment in H2 exhibited a lower selectivity (68–73%) due to the formation of particles non-uniform both in composition and size (about 4 to 60 nm). The IR spectroscopy data suggest this effect is presumably associated with the removal of O-containing functional groups from the carbon surface during the reduction of the supported precursor. Given that O-groups act as anchoring sites for the precursors of active components and suppress the ability of Sibunit to reduce metals from their salt solutions, the subsequent deposition of the second metal salt causes a non-uniform distribution of this metal on the surface and the generation of larger particles.
Cite:
Yurpalova D.V.
, Afonasenko T.N.
, Trenikhin M.V.
, Leont’eva N.N.
, Arbuzov A.B.
, Temerev V.L.
, Shlyapin D.A.
Hydrogenation of Acetylene over Pd–Ag/Sibunit Catalysts: Effect of the Deposition Sequence of Active Component Precursors
Petroleum Chemistry. 2023. V.63. N8. P.982-992. DOI: 10.1134/S0965544123060129 WOS Scopus РИНЦ OpenAlex
Hydrogenation of Acetylene over Pd–Ag/Sibunit Catalysts: Effect of the Deposition Sequence of Active Component Precursors
Petroleum Chemistry. 2023. V.63. N8. P.982-992. DOI: 10.1134/S0965544123060129 WOS Scopus РИНЦ OpenAlex
Original:
Юрпалова Д.В.
, Афонасенко Т.Н.
, Тренихин М.В.
, Леонтьева Н.Н.
, Арбузов А.Б.
, Темерев В.Л.
, Шляпин Д.А.
Гидрирование ацетилена на Pd-Ag/Сибунит катализаторе: влияние последовательности нанесения предшественников активного компонента
Нефтехимия. 2023. Т.63. №4. С.582-594. DOI: 10.31857/S0028242123040123 РИНЦ OpenAlex
Гидрирование ацетилена на Pd-Ag/Сибунит катализаторе: влияние последовательности нанесения предшественников активного компонента
Нефтехимия. 2023. Т.63. №4. С.582-594. DOI: 10.31857/S0028242123040123 РИНЦ OpenAlex
Dates:
| Submitted: | Dec 28, 2022 |
| Accepted: | Sep 15, 2023 |
| Published print: | Dec 7, 2023 |
| Published online: | Dec 7, 2023 |
Identifiers:
| Web of science: | WOS:001115560700013 |
| Scopus: | 2-s2.0-85178926402 |
| Elibrary: | 64536911 |
| OpenAlex: | W4389443333 |
Citing:
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