A Study on Structural Features of Bimetallic Pd-M/C (M: Zn, Ga, Ag) Catalysts for Liquid-Phase Selective Hydrogenation of Acetylene | Sciact - CRIS-система Института катализа

A Study on Structural Features of Bimetallic Pd-M/C (M: Zn, Ga, Ag) Catalysts for Liquid-Phase Selective Hydrogenation of Acetylene Научная публикация

Журнал

Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875

Вых. Данные

Год: 2018, Том: 563, Страницы: 18-27 Страниц : 10 DOI: 10.1016/j.apcata.2018.06.029

Ключевые слова

Liquid-phase hydrogenation of acetylene; palladium catalyst; bimetallic catalysts; metal-metal interaction; carbonaceous support

Авторы

Glyzdova Daria V. ¹ , Vedyagin Aleksey A. ^2,3 , Tsapina Anna M. ² , Kaichev Vasily V. ² , Trigub Alexander L. ⁴ , Trenikhin Mikhail V. ^1,5 , Shlyapin Dmitry A. ¹ , Tsyrulnikov Pavel G. ¹ , Lavrenov Alexander V. ¹

Организации

1	Institute of hydrocarbon processing SB RAS, Neftezavodskaya st., 54, Omsk, 644040, Russian Federation
2	Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva, 5, Novosibirsk, 630090, Russian Federation
3	National Research Tomsk Polytechnic University, pr. Lenina, 30, Tomsk, 634050, Russian Federation
4	National Research Centre "Kurchatov Institute", Kurchatov Square, 1, Moscow, 123182, Russian Federation
5	Omsk State Technical University, pr. Mira, 11, Omsk, 644050, Russian Federation

Информация о финансировании (1)

Российский фонд фундаментальных исследований

17-33-50019

The present work is devoted to the study of doping effects of zinc, gallium and silver on the structure of active sites and catalytic properties of carbon-supported 0.5 wt% Pd catalysts in the liquid-phase selective hydrogenation of acetylene to ethylene. Carbonaceous graphite-like material Sibunit was used as a support. The reaction was performed in a medium of N-methyl-2-pyrrolidone at 55 °C. It was shown that the bimetallic Pd-Zn/C, Pd-Ga/C and Pd-Ag/C catalysts exhibit better activity and selectivity towards target product if compare with the monometallic Pd/C catalyst. The ethylene yield increases in a row as follows: Pd/C (19%) < Pd-Ag/C (34%) < Pd-Ga/C (42%) < Pd-Zn/C (53%). Using X-ray absorption spectroscopy and transmission electron microscopy it was found that an improvement of the selectivity is stipulated by the formation of bimetallic PdZn, PdxGay and PdAg nanophases. In the case of Pd-Zn/C and Pd-Ag/C systems, an increased distance between neighboring Pd atoms (2.82 – 2.89 Å) in relation with monometallic Pd/C, where this distance is 2.72 Å, was observed. The higher activity of modified bimetallic systems is connected with increased number of active sites due to enhanced dispersity of supported palladium doped with second metal.

Glyzdova D.V. , Vedyagin A.A. , Tsapina A.M. , Kaichev V.V. , Trigub A.L. , Trenikhin M.V. , Shlyapin D.A. , Tsyrulnikov P.G. , Lavrenov A.V.
A Study on Structural Features of Bimetallic Pd-M/C (M: Zn, Ga, Ag) Catalysts for Liquid-Phase Selective Hydrogenation of Acetylene
Applied Catalysis A: General. 2018. V.563. P.18-27. DOI: 10.1016/j.apcata.2018.06.029 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	21 апр. 2018 г.
Принята к публикации:	23 июн. 2018 г.
Опубликована online:	27 июн. 2018 г.
Опубликована в печати:	1 авг. 2018 г.

Web of science:	WOS:000441856100003
Scopus:	2-s2.0-85049077516
РИНЦ:	35752044
Chemical Abstracts:	2018:1255020
OpenAlex:	W2810403817

БД	Цитирований
Web of science	45
Scopus	46
РИНЦ	53
OpenAlex	44