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Zinc Addition Influence on the Properties of Pd/Sibunit Catalyst in Selective Acetylene Hydrogenation Научная публикация

Журнал Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028
Вых. Данные Год: 2020, Том: 63, Номер: 1-2, Страницы: 139-151 Страниц : 13 DOI: 10.1007/s11244-019-01215-9
Ключевые слова Palladium catalyst, Modifcation by Zn, Selective acetylene hydrogenation, Bimetallic nanoparticles, Structural changes
Авторы Glyzdova Daria V. 1 , Afonasenko Tatyana N. 1 , Khramov Evgeny V. 2 , Leont’eva Natalya N. 1 , Trenikhin Mikhail V. 1,3 , Prosvirin Igor P. 4 , Bukhtiyarov Andrey V. 4 , Shlyapin Dmitry A. 1
Организации
1 Center of New Chemical Technologies BIC
2 National Research Center “Kurchatov Institute”
3 Omsk State Technical University
4 Federal Research Center Boreskov Institute of Catalysis

Информация о финансировании (1)

1 Министерство науки и высшего образования Российской Федерации 46.2.5

Реферат: A series of bimetallic Pd–Zn catalysts supported on the carbon material Sibunit was synthesized for selective hydrogenation of acetylene. XRD, XPS, XAFS and TEM data revealed that the structure and dispersion of bimetallic particles in Pd–Zn/Sibunit samples depend on the molar ratio Pd:Zn. The active component of the Pd-Zn(1:0.25)/Sibunit sample is a substitutional solid solution. In the catalysts with Pd:Zn ≤ 1, the interaction proceeds more completely with the transformation of FCC lattice of the solid solution into the tetragonal structure of intermetallic phase with the composition close to PdZn, whereas an excess of zinc forms the individual ZnO phase. It was found that an increase in the zinc content in Pd–Zn/Sibunit catalysts from Pd:Zn = 1:0 to 1:4 leads to dispergation of the deposited mono- and bimetallic particles from dav = 7.2 to 2.0 nm. The formation of the PdZn intermetallic compound with increasing the zinc content from Pd:Zn = 1:0 to 1:1 is accompanied by a gradual increase in selectivity to ethylene from 42% for Pd/Sibunit to 67% for Pd–Zn(1:1)/Sibunit (the reaction temperature is 95 °C), and also by a decrease in activity. The introduction of a zinc excess (Pd:Zn < 1), on the contrary, decreases the hydrogenation selectivity to ~ 62%, presumably owing to a high dispersion of bimetallic particles.
Библиографическая ссылка: Glyzdova D.V. , Afonasenko T.N. , Khramov E.V. , Leont’eva N.N. , Trenikhin M.V. , Prosvirin I.P. , Bukhtiyarov A.V. , Shlyapin D.A.
Zinc Addition Influence on the Properties of Pd/Sibunit Catalyst in Selective Acetylene Hydrogenation
Topics in Catalysis. 2020. V.63. N1-2. P.139-151. DOI: 10.1007/s11244-019-01215-9 WOS Scopus РИНЦ OpenAlex
Даты:
Поступила в редакцию: 6 нояб. 2019 г.
Опубликована online: 1 янв. 2020 г.
Опубликована в печати: 17 мар. 2020 г.
Принята к публикации: 14 дек. 2020 г.
Идентификаторы БД:
Web of science: WOS:000519929000015
Scopus: 2-s2.0-85077182836
РИНЦ: 43223202
OpenAlex: W2998566484
Цитирование в БД:
БД Цитирований
Scopus 12
Web of science 7
OpenAlex 14
Альметрики: