Ethanol Dehydrogenation to Acetaldehyde over Co@N-Doped Carbon Full article
| Journal |
Catalysts
ISSN: 2073-4344 |
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| Output data | Year: 2021, Volume: 11, Number: 11, Article number : 1411, Pages count : 14 DOI: 10.3390/catal11111411 | ||||
| Tags | cobalt-nitrogen-carbon catalyst; heterogeneous catalysis; ethanol conversion; dehydrogenation; acetaldehyde | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0009 |
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.
Cite:
Chernov A.N.
, Astrakova T.V.
, Koltunov K.Y.
, Sobolev V.I.
Ethanol Dehydrogenation to Acetaldehyde over Co@N-Doped Carbon
Catalysts. 2021. V.11. N11. 1411 :1-14. DOI: 10.3390/catal11111411 WOS Scopus РИНЦ AN OpenAlex
Ethanol Dehydrogenation to Acetaldehyde over Co@N-Doped Carbon
Catalysts. 2021. V.11. N11. 1411 :1-14. DOI: 10.3390/catal11111411 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Oct 29, 2021 |
| Accepted: | Nov 19, 2021 |
| Published print: | Nov 21, 2021 |
| Published online: | Nov 21, 2021 |
Identifiers:
| Web of science: | WOS:000725226700001 |
| Scopus: | 2-s2.0-85119333002 |
| Elibrary: | 47527735 |
| Chemical Abstracts: | 2021:2643244 |
| OpenAlex: | W3215397982 |