Cobalt-copper oxide catalysts for VOC abatement: effect of Co:Cu ratio on performance in ethanol oxidation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F23%3A00566710" target="_blank" >RIV/67985858:_____/23:00566710 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/23:43928086 RIV/60461373:22810/23:43928086
Result on the web
<a href="https://www.mdpi.com/2073-4344/13/1/107" target="_blank" >https://www.mdpi.com/2073-4344/13/1/107</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/catal13010107" target="_blank" >10.3390/catal13010107</a>
Alternative languages
Result language
angličtina
Original language name
Cobalt-copper oxide catalysts for VOC abatement: effect of Co:Cu ratio on performance in ethanol oxidation
Original language description
The effect of the Co-Cu oxide catalysts composition on their physicochemical properties and performance in the deep oxidation of ethanol was studied. The catalysts with Co:Cu molar ratios of 4:1, 1:1, and 1:4 were obtained by calcination (4 h at 500 ◦C in air) of the coprecipitated precursors and characterized in detail using powder XRD, Raman spectroscopy, N2 physisorption, H2-TPR, and XPS. The powder XRD and Raman spectroscopy indicated the formation of Co3O4 and CuO mixtures rather than Co-Cu mixed oxides. The CuO promoted the Co3O4 reduction, the Co-Cu catalysts were reduced more easily than the single-component Co and Cu oxides and the main reduction maxima were shifted to lower temperatures with increasing cobalt content in the catalysts. The Co-Cu oxide catalyst with a Co:Cu molar ratio of 4:1 exhibited the best performance in ethanol gas-phase oxidation, showing the lowest T50 (91 ◦C) and T90(CO2) (159 ◦C) temperatures needed for 50% ethanol conversion and 90% conversion to CO2, respectively. The excellent catalytic properties of this Co-Cu oxide catalyst were ascribed to the synergistic effect of Co and Cu components. The high activity and selectivity of the Co-Cu catalyst was attributed to the presence of finely dispersed CuO particles on the surface of Co3O4.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysts
ISSN
2073-4344
e-ISSN
2073-4344
Volume of the periodical
13
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
18
Pages from-to
107
UT code for WoS article
000914579500001
EID of the result in the Scopus database
2-s2.0-85146708712