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

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

Journal

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

Output data

Year: 2018, Volume: 563, Pages: 18-27 Pages count : 10 DOI: 10.1016/j.apcata.2018.06.029

Tags

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

Authors

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

Affiliations

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

Funding (1)

Russian Foundation for Basic Research

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 AN OpenAlex

Submitted:	Apr 21, 2018
Accepted:	Jun 23, 2018
Published online:	Jun 27, 2018
Published print:	Aug 1, 2018

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

DB	Citing
Web of science	45
Scopus	46
Elibrary	53
OpenAlex	44