Highly Active Bimetallic Single-Atom Alloy PdAg Catalysts on Cerium-Containing Supports in the Hydrogenation of Alkynes to Alkenes Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2022, Volume: 63, Number: 6, Pages: 756–764 Pages count : 9 DOI: 10.1134/S0023158422060118 | ||||
| Tags | single-atom alloy catalysts; isolated Pd1 sites; bimetallic catalysts; PdAg; heterogeneous catalysts; liquid-phase hydrogenation; diphenylacetylene; Ce-containing supports | ||||
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 19-13-00285-П |
Abstract:
A study of a series of single-atom-alloy catalysts Pd1Ag3/Al2O3, Pd1Ag3/CeO2–Al2O3, and Pd1Ag3/CeO2–ZrO2 in the selective hydrogenation of diphenylacetylene (DPA) showed a significant (five-fold) increase in activity for the PdAg3/CeO2–ZrO2 sample in comparison with that of Pd1Ag3/Al2O3. It was especially noted that the increase in activity was not accompanied by a decrease in the selectivity for the target product. This catalytic behavior can be explained by two factors: (1) a more than twofold increase in the dispersity of the PdAg3/CeO2–ZrO2 catalyst and (2) a change in the electronic state of the nanoparticles, as determined from the results of an IR-spectroscopic study of adsorbed CO. The retention of the high selectivity of the synthesized catalysts indicated the stability of the structure of Pd1 monoatomic sites in the catalysts prepared by deposition on Ce-containing supports, which was also confirmed by the IR spectroscopy of adsorbed CO. The experimental results indicate that Ce-containing supports are promising for the synthesis of catalysts for the selective hydrogenation of substituted alkynes.
Cite:
Rassolov A.V.
, Bragina G.O.
, Baeva G.N.
, Mashkovsky I.S.
, Smirnova N.S.
, Gerasimov E.Y.
, Bukhtiyarov A.V.
, Zubavichus Y.V.
, Stakheev A.Y.
Highly Active Bimetallic Single-Atom Alloy PdAg Catalysts on Cerium-Containing Supports in the Hydrogenation of Alkynes to Alkenes
Kinetics and Catalysis. 2022. V.63. N6. P.756–764. DOI: 10.1134/S0023158422060118 WOS Scopus РИНЦ AN OpenAlex
Highly Active Bimetallic Single-Atom Alloy PdAg Catalysts on Cerium-Containing Supports in the Hydrogenation of Alkynes to Alkenes
Kinetics and Catalysis. 2022. V.63. N6. P.756–764. DOI: 10.1134/S0023158422060118 WOS Scopus РИНЦ AN OpenAlex
Original:
Рассолов А.В.
, Брагина Г.О.
, Баева Г.Н.
, Машковский И.С.
, Смирнова Н.С.
, Герасимов Е.Ю.
, Бухтияров А.В.
, Зубавичус Я.В.
, Стахеев А.Ю.
Высокоактивные моноатомные сплавные PdAg-катализаторы на церийсодержащих носителях для селективного гидрирования алкинов в алкены
Кинетика и катализ. 2022. Т.63. №6. С.798-807. DOI: 10.31857/S0453881122060119 РИНЦ OpenAlex
Высокоактивные моноатомные сплавные PdAg-катализаторы на церийсодержащих носителях для селективного гидрирования алкинов в алкены
Кинетика и катализ. 2022. Т.63. №6. С.798-807. DOI: 10.31857/S0453881122060119 РИНЦ OpenAlex
Dates:
| Submitted: | Jun 28, 2022 |
| Accepted: | Jul 2, 2022 |
| Published online: | Dec 10, 2022 |
Identifiers:
| Web of science: | WOS:000944025100014 |
| Scopus: | 2-s2.0-85143641842 |
| Elibrary: | 50428813 |
| Chemical Abstracts: | 2022:3086579 |
| OpenAlex: | W4312067636 |