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Ethanol dehydrogenation to acetaldehyde over Co@N-doped carbon. / Chernov, Aleksey N.; Astrakova, Tatiana V.; Koltunov, Konstantin Yu и др.

в: Catalysts, Том 11, № 11, 1411, 11.2021.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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Chernov AN, Astrakova TV, Koltunov KY, Sobolev VI. Ethanol dehydrogenation to acetaldehyde over Co@N-doped carbon. Catalysts. 2021 нояб.;11(11):1411. doi: 10.3390/catal11111411

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BibTeX

@article{9a42a4e5a2604e12bc248aea71c8566e,
title = "Ethanol dehydrogenation to acetaldehyde over Co@N-doped carbon",
abstract = "Cobalt and nitrogen co-doped carbon materials (Co@CN) have recently attracted significant attention as highly efficient noble-metal-free catalysts exhibiting a large application range. In a similar research interest, and taking into account the ever-increasing importance of bioethanol as a renewable raw material, here, we report the results on ethanol dehydrogenation to acetaldehyde over Co@NC catalysts. The catalyst samples were synthesized by a variety of affordable techniques, ensuring generation of various types of Co species incorporated in carbon, such as subnanosized cobalt sites and nano-sized particles of metallic cobalt and cobalt oxides. The catalytic activity was tested under both oxidative and non-oxidative gas-phase conditions at 200–450 °C using a fixed-bed flow reactor. The non-oxidative conditions proved to be much more preferable for the target reaction, competing, however, with ethanol dehydration to ethylene. Under specified reaction conditions, ethanol conversion achieved a level of 66% with 84% selectivity to acetaldehyde at 400 °C. The presence of molecular oxygen in the feed led mainly to deep oxidation of ethanol to COx, giving acetaldehyde in a comparatively low yield. The potential contribution of carbon itself and supported cobalt forms to the observed reaction pathways is discussed.",
keywords = "Acetaldehyde, Cobalt-nitrogen-carbon catalyst, Dehy-drogenation, Ethanol conversion, Heterogeneous catalysis",
author = "Chernov, {Aleksey N.} and Astrakova, {Tatiana V.} and Koltunov, {Konstantin Yu} and Sobolev, {Vladimir I.}",
note = "Funding Information: Funding: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (project AAAA-A21-121011390008-4). Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2021",
month = nov,
doi = "10.3390/catal11111411",
language = "English",
volume = "11",
journal = "Catalysts",
issn = "2073-4344",
publisher = "MDPI AG",
number = "11",

}

RIS

TY - JOUR

T1 - Ethanol dehydrogenation to acetaldehyde over Co@N-doped carbon

AU - Chernov, Aleksey N.

AU - Astrakova, Tatiana V.

AU - Koltunov, Konstantin Yu

AU - Sobolev, Vladimir I.

N1 - Funding Information: Funding: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (project AAAA-A21-121011390008-4). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/11

Y1 - 2021/11

N2 - Cobalt and nitrogen co-doped carbon materials (Co@CN) have recently attracted significant attention as highly efficient noble-metal-free catalysts exhibiting a large application range. In a similar research interest, and taking into account the ever-increasing importance of bioethanol as a renewable raw material, here, we report the results on ethanol dehydrogenation to acetaldehyde over Co@NC catalysts. The catalyst samples were synthesized by a variety of affordable techniques, ensuring generation of various types of Co species incorporated in carbon, such as subnanosized cobalt sites and nano-sized particles of metallic cobalt and cobalt oxides. The catalytic activity was tested under both oxidative and non-oxidative gas-phase conditions at 200–450 °C using a fixed-bed flow reactor. The non-oxidative conditions proved to be much more preferable for the target reaction, competing, however, with ethanol dehydration to ethylene. Under specified reaction conditions, ethanol conversion achieved a level of 66% with 84% selectivity to acetaldehyde at 400 °C. The presence of molecular oxygen in the feed led mainly to deep oxidation of ethanol to COx, giving acetaldehyde in a comparatively low yield. The potential contribution of carbon itself and supported cobalt forms to the observed reaction pathways is discussed.

AB - Cobalt and nitrogen co-doped carbon materials (Co@CN) have recently attracted significant attention as highly efficient noble-metal-free catalysts exhibiting a large application range. In a similar research interest, and taking into account the ever-increasing importance of bioethanol as a renewable raw material, here, we report the results on ethanol dehydrogenation to acetaldehyde over Co@NC catalysts. The catalyst samples were synthesized by a variety of affordable techniques, ensuring generation of various types of Co species incorporated in carbon, such as subnanosized cobalt sites and nano-sized particles of metallic cobalt and cobalt oxides. The catalytic activity was tested under both oxidative and non-oxidative gas-phase conditions at 200–450 °C using a fixed-bed flow reactor. The non-oxidative conditions proved to be much more preferable for the target reaction, competing, however, with ethanol dehydration to ethylene. Under specified reaction conditions, ethanol conversion achieved a level of 66% with 84% selectivity to acetaldehyde at 400 °C. The presence of molecular oxygen in the feed led mainly to deep oxidation of ethanol to COx, giving acetaldehyde in a comparatively low yield. The potential contribution of carbon itself and supported cobalt forms to the observed reaction pathways is discussed.

KW - Acetaldehyde

KW - Cobalt-nitrogen-carbon catalyst

KW - Dehy-drogenation

KW - Ethanol conversion

KW - Heterogeneous catalysis

UR - http://www.scopus.com/inward/record.url?scp=85119333002&partnerID=8YFLogxK

U2 - 10.3390/catal11111411

DO - 10.3390/catal11111411

M3 - Article

AN - SCOPUS:85119333002

VL - 11

JO - Catalysts

JF - Catalysts

SN - 2073-4344

IS - 11

M1 - 1411

ER -

ID: 34706087