A study on structural features of bimetallic Pd-M/C (M: Zn, Ga, Ag) catalysts for liquid-phase selective hydrogenation of acetylene

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

Результат исследований: Материалы для журналаСтатья

7 Цитирования (Scopus)

Выдержка

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.

Язык оригиналаАнглийский
Страницы (с-по)18-27
Число страниц10
ЖурналApplied Catalysis A: General
Том563
DOI
СостояниеОпубликовано - 5 авг 2018

Отпечаток

Acetylene
Hydrogenation
Catalysts
Ethylene
Liquids
Gallium
X ray absorption spectroscopy
Graphite
Catalyst selectivity
Palladium
Silver
Zinc
Catalyst activity
Carbon
Metals
Doping (additives)
Transmission electron microscopy
Atoms
ethylene

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Цитировать

A study on structural features of bimetallic Pd-M/C (M : Zn, Ga, Ag) catalysts for liquid-phase selective hydrogenation of acetylene. / Glyzdova, Daria V.; Vedyagin, Aleksey A.; Tsapina, Anna M.; Kaichev, Vasily V.; Trigub, Alexander L.; Trenikhin, Mikhail V.; Shlyapin, Dmitry A.; Tsyrulnikov, Pavel G.; Lavrenov, Alexander V.

В: Applied Catalysis A: General, Том 563, 05.08.2018, стр. 18-27.

Результат исследований: Материалы для журналаСтатья

Glyzdova, DV, Vedyagin, AA, Tsapina, AM, Kaichev, VV, Trigub, AL, Trenikhin, MV, Shlyapin, DA, Tsyrulnikov, PG & Lavrenov, AV 2018, '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, том. 563, стр. 18-27. https://doi.org/10.1016/j.apcata.2018.06.029
Glyzdova, Daria V. ; Vedyagin, Aleksey A. ; Tsapina, Anna M. ; Kaichev, Vasily V. ; Trigub, Alexander L. ; Trenikhin, Mikhail V. ; Shlyapin, Dmitry A. ; Tsyrulnikov, Pavel G. ; Lavrenov, Alexander V. / A study on structural features of bimetallic Pd-M/C (M : Zn, Ga, Ag) catalysts for liquid-phase selective hydrogenation of acetylene. В: Applied Catalysis A: General. 2018 ; Том 563. стр. 18-27.
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abstract = "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 {\AA}) in relation with monometallic Pd/C, where this distance is 2.72 {\AA}, 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.",
keywords = "Bimetallic catalysts, Carbonaceous support, Liquid-phase hydrogenation of acetylene, Metal-metal interaction, Palladium catalyst",
author = "Glyzdova, {Daria V.} and Vedyagin, {Aleksey A.} and Tsapina, {Anna M.} and Kaichev, {Vasily V.} and Trigub, {Alexander L.} and Trenikhin, {Mikhail V.} and Shlyapin, {Dmitry A.} and Tsyrulnikov, {Pavel G.} and Lavrenov, {Alexander V.}",
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T1 - A study on structural features of bimetallic Pd-M/C (M

T2 - Zn, Ga, Ag) catalysts for liquid-phase selective hydrogenation of acetylene

AU - Glyzdova, Daria V.

AU - Vedyagin, Aleksey A.

AU - Tsapina, Anna M.

AU - Kaichev, Vasily V.

AU - Trigub, Alexander L.

AU - Trenikhin, Mikhail V.

AU - Shlyapin, Dmitry A.

AU - Tsyrulnikov, Pavel G.

AU - Lavrenov, Alexander V.

PY - 2018/8/5

Y1 - 2018/8/5

N2 - 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.

AB - 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.

KW - Bimetallic catalysts

KW - Carbonaceous support

KW - Liquid-phase hydrogenation of acetylene

KW - Metal-metal interaction

KW - Palladium catalyst

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U2 - 10.1016/j.apcata.2018.06.029

DO - 10.1016/j.apcata.2018.06.029

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JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

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