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

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)

Министерство науки и высшего образования Российской Федерации

46.2.5

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.

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

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.

Web of science:	WOS:000471105000081
Scopus:	2-s2.0-85064012671
РИНЦ:	38680042
OpenAlex:	W2935898279

БД	Цитирований
Scopus	18
Web of science	12
OpenAlex	23