Optimization of oxygen chemisorption on the carbon surface based on kinetic analysis of isothermal thermogravimetry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901UPF" target="_blank" >RIV/61988987:17310/18:A1901UPF - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0040603118303630" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0040603118303630</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.tca.2018.06.007" target="_blank" >10.1016/j.tca.2018.06.007</a>

Result language
angličtina
Original language name
Optimization of oxygen chemisorption on the carbon surface based on kinetic analysis of isothermal thermogravimetry
Original language description
The kinetics of oxidation of carbonaceous materials at low temperature (<300 °C) was explored by isothermal thermogravimetry. The suggested kinetic equation is based on the assumption of three reactions - creation of the oxygen surface groups, decomposition of created oxygen surface groups and carbon burn off. Truncated Sestak-Berggren kinetic model was used for mechanism description. The optimised kinetic equation has shown the good agreement between the theoretical and experimental data and enabled calculation of conditions (temperature, oxygen pressure) for effective carbon surface oxidation (maximal oxygen chemisorption). Predicted oxygen uptake at given conditions (4.0% at 226 °C in 20% O2, 4.6% at 196 °C in 50% O2 and 4.5% at 205 °C in 80% O2) was confirmed experimentally with a very good agreement. Application of developed carbon oxidation kinetics description allows predicting optimized conditions for preparation of highly surface oxidized carbonaceous materials.
Czech name
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Czech description
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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
10406 - Analytical chemistry

Project
<a href="/en/project/LO1208" target="_blank" >LO1208: Theoretical aspects of Energetic treatment of Waste and Environment Protection against negative impacts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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