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Room temperature CO oxidation over AgCuO2. / Svintsitskiy, Dmitry A.; Kardash, Tatyana Yu; Fedorova, Elizaveta A. et al.

In: Applied Surface Science, Vol. 525, 146523, 30.09.2020.

Research output: Contribution to journal › Article › peer-review

Harvard

Svintsitskiy, DA, Kardash, TY, Fedorova, EA, Slavinskaya, EM & Boronin, AI 2020, 'Room temperature CO oxidation over AgCuO2', Applied Surface Science, vol. 525, 146523. https://doi.org/10.1016/j.apsusc.2020.146523

APA

Svintsitskiy, D. A., Kardash, T. Y., Fedorova, E. A., Slavinskaya, E. M., & Boronin, A. I. (2020). Room temperature CO oxidation over AgCuO2. Applied Surface Science, 525, [146523]. https://doi.org/10.1016/j.apsusc.2020.146523

Vancouver

Svintsitskiy DA, Kardash TY, Fedorova EA, Slavinskaya EM, Boronin AI. Room temperature CO oxidation over AgCuO2. Applied Surface Science. 2020 Sept 30;525:146523. doi: 10.1016/j.apsusc.2020.146523

Author

Svintsitskiy, Dmitry A. ; Kardash, Tatyana Yu ; Fedorova, Elizaveta A. et al. / Room temperature CO oxidation over AgCuO2. In: Applied Surface Science. 2020 ; Vol. 525.

BibTeX

@article{338287517c654bc4868dfa6f6e24bbc5,
title = "Room temperature CO oxidation over AgCuO2",
abstract = "Mixed silver–copper oxide AgCuO2 is able to interact with CO at room temperature (RT). Such interaction is provided by the participation of the reactive oxygen species associated with deeply oxidized states of silver Ag(1+δ)+ and copper Cu(3-δ)+. CO conversion increases by more than about 20% when O2 appears in the reaction mixture. It indicates the contribution of catalytic oxidation over AgCuO2 with participation of gas–phase oxygen. It was shown that oxidizing ability of AgCuO2 decreased during prolonged interaction as a result of accumulation of surface bicarbonates. The rate of AgCuO2 deactivation at RT is significantly increased under wet conditions. The examination of thermal stability under reducing reaction medium showed that the AgCuO2 crystal structure is not stable at temperatures higher than 75 °C. Above this temperature, sequential decomposition takes place with the formation of Ag2Cu2O3 and, then, a mixture of Ag0 and CuO. Such transformation results in the loss of oxidizing ability at RT.",
keywords = "Carbon monoxide, Heterogeneous catalysis, Mixed silver-copper oxide, Oxidation, Surface chemistry, SELECTIVE OXIDATION, OXIDIZED SILVER, COPPER, ADSORPTION, PREFERENTIAL OXIDATION, NANOPARTICLES, CARBON-MONOXIDE, CATALYTIC-PROPERTIES, CUO, ELECTRONIC-STRUCTURE",
author = "Svintsitskiy, {Dmitry A.} and Kardash, {Tatyana Yu} and Fedorova, {Elizaveta A.} and Slavinskaya, {Elena M.} and Boronin, {Andrei I.}",
note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = sep,
day = "30",
doi = "10.1016/j.apsusc.2020.146523",
language = "English",
volume = "525",
journal = "Applied Surface Science",
issn = "0169-4332",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Room temperature CO oxidation over AgCuO2

AU - Svintsitskiy, Dmitry A.

AU - Kardash, Tatyana Yu

AU - Fedorova, Elizaveta A.

AU - Slavinskaya, Elena M.

AU - Boronin, Andrei I.

N1 - Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/9/30

Y1 - 2020/9/30

N2 - Mixed silver–copper oxide AgCuO2 is able to interact with CO at room temperature (RT). Such interaction is provided by the participation of the reactive oxygen species associated with deeply oxidized states of silver Ag(1+δ)+ and copper Cu(3-δ)+. CO conversion increases by more than about 20% when O2 appears in the reaction mixture. It indicates the contribution of catalytic oxidation over AgCuO2 with participation of gas–phase oxygen. It was shown that oxidizing ability of AgCuO2 decreased during prolonged interaction as a result of accumulation of surface bicarbonates. The rate of AgCuO2 deactivation at RT is significantly increased under wet conditions. The examination of thermal stability under reducing reaction medium showed that the AgCuO2 crystal structure is not stable at temperatures higher than 75 °C. Above this temperature, sequential decomposition takes place with the formation of Ag2Cu2O3 and, then, a mixture of Ag0 and CuO. Such transformation results in the loss of oxidizing ability at RT.

AB - Mixed silver–copper oxide AgCuO2 is able to interact with CO at room temperature (RT). Such interaction is provided by the participation of the reactive oxygen species associated with deeply oxidized states of silver Ag(1+δ)+ and copper Cu(3-δ)+. CO conversion increases by more than about 20% when O2 appears in the reaction mixture. It indicates the contribution of catalytic oxidation over AgCuO2 with participation of gas–phase oxygen. It was shown that oxidizing ability of AgCuO2 decreased during prolonged interaction as a result of accumulation of surface bicarbonates. The rate of AgCuO2 deactivation at RT is significantly increased under wet conditions. The examination of thermal stability under reducing reaction medium showed that the AgCuO2 crystal structure is not stable at temperatures higher than 75 °C. Above this temperature, sequential decomposition takes place with the formation of Ag2Cu2O3 and, then, a mixture of Ag0 and CuO. Such transformation results in the loss of oxidizing ability at RT.

KW - Carbon monoxide

KW - Heterogeneous catalysis

KW - Mixed silver-copper oxide

KW - Oxidation

KW - Surface chemistry

KW - SELECTIVE OXIDATION

KW - OXIDIZED SILVER

KW - COPPER

KW - ADSORPTION

KW - PREFERENTIAL OXIDATION

KW - NANOPARTICLES

KW - CARBON-MONOXIDE

KW - CATALYTIC-PROPERTIES

KW - CUO

KW - ELECTRONIC-STRUCTURE

UR - http://www.scopus.com/inward/record.url?scp=85084341603&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2020.146523

DO - 10.1016/j.apsusc.2020.146523

M3 - Article

AN - SCOPUS:85084341603

VL - 525

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

M1 - 146523

ER -

ID: 24261131