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Properties of PdAg/Al2O3 Egg–Shell Single-Atom Catalysts in Front-End Hydrogenation of Acetyleneстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
- Авторы: Mashkovsky I.S., Markov P.V., Baeva G.N., Smirnova N.S., Vaulina A.E., Mel’nikov D.P., Stakheev A.Yu
- Журнал: Petroleum Chemistry
- Том: 64
- Номер: 9
- Год издания: 2024
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1159
- Последняя страница: 1168
- DOI: 10.1134/s0965544124050165
- Аннотация: Two samples of PdAg/Al2O3 egg–shell single-atom catalysts, with Ag/Pd ratios of 1 : 1 and 3 : 1, were synthesized and characterized by TEM, XPS, and DRIFTS-CO methods. The formation of bimetallic PdAg alloy nanoparticles with single-atom Pd1 active sites was demonstrated. Furthermore, a physicochemical characterization showed a egg–shell distribution of the active component. The catalytic performance of the samples was tested in front-end selective hydrogenation of acetylene. The H2/C2H2 ratio in the model mixture was varied from 20 to 60. Under front-end acetylene hydrogenation conditions, the highest ethylene selectivity (about 87 at 90% acetylene conversion) was achieved in the presence of the Pd1Ag3/Al2O3 catalyst at H2/C2H2 = 20. Finally, it was shown that, unlike the monometallic Pd catalyst, the Ag-promoted catalysts were completely free of any local thermal runaway effect.
- Добавил в систему: Стахеев Александр Юрьевич