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Study on the active phase formation of Pd-Zn/Sibunit catalysts during the thermal treatment in hydrogen Научная публикация

Журнал Applied Surface Science
ISSN: 0169-4332
Вых. Данные Год: 2019, Том: 483, Страницы: 730-741 Страниц : 12 DOI: 10.1016/j.apsusc.2019.03.215
Ключевые слова Palladium catalyst; Modification with Zn; Nanoparticles; Structural changes; Temperature-programmed reduction
Авторы Glyzdova Daria V. 1 , Khramov Evgeny V. 2 , Smirnova Nadezhda S. 3 , Prosvirin Igor P. 4 , Bukhtiyarov Andrey V. 4 , Trenikhin Mikhail V. 1 , Gulyaeva Tatyana I. 1 , Vedyagin Aleksey A. 4 , Shlyapin Dmitry A. 1 , Lavrenov Alexander V. 1
Организации
1 Institute of Hydrocarbon Processing SB RAS, Neftezavodskaya St., 54, Omsk 644040, Russian Federation
2 National Research Centre “Kurchatov Institute”, Kurchatov Square, 1, Moscow 123182, Russian Federation
3 Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky Prospect, 31, Moscow 119991, Russian Federation
4 Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva, 5, Novosibirsk 630090, Russian Federation

Информация о финансировании (1)

1 Министерство науки и высшего образования Российской Федерации 46.2.5

Реферат: In the present research, the process of the formation of the active components of Pd-Zn catalysts supported on carbonaceous material Sibunit prepared by the joint impregnation (Pd:Zn = 1) is studied. It was shown by means of TPR and EXAFS techniques that the interaction between palladium and zinc begins already at T > 200 °C. During the reduction in hydrogen at temperatures of 200–300 °C the surface of particles being formed is enriched with oxidized zinc. In the temperature range of 400–500 °C zinc is completely reduced, and the crystal lattice of a substitutional solid solution based on fcc lattice of palladium is restructured in tetragonal lattice of PdZn. However, an increase of the calcination temperature in H2 atmosphere (500 °C) significantly rises up the probability of partial destruction of bimetallic phase due to the partial migration of zinc atoms from the surface into the bulk of particles.
Библиографическая ссылка: Glyzdova D.V. , Khramov E.V. , Smirnova N.S. , Prosvirin I.P. , Bukhtiyarov A.V. , Trenikhin M.V. , Gulyaeva T.I. , Vedyagin A.A. , Shlyapin D.A. , Lavrenov A.V.
Study on the active phase formation of Pd-Zn/Sibunit catalysts during the thermal treatment in hydrogen
Applied Surface Science. 2019. V.483. P.730-741. DOI: 10.1016/j.apsusc.2019.03.215 WOS Scopus РИНЦ OpenAlex
Даты:
Поступила в редакцию: 12 дек. 2018 г.
Опубликована в печати: 1 мар. 2019 г.
Принята к публикации: 20 мар. 2019 г.
Опубликована online: 22 мар. 2019 г.
Идентификаторы БД:
Web of science: WOS:000471105000081
Scopus: 2-s2.0-85064012671
РИНЦ: 38680042
OpenAlex: W2935898279
Цитирование в БД:
БД Цитирований
Scopus 25
Web of science 21
OpenAlex 30
Альметрики: