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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

The kinetics of oxidation of carbonaceous materials at low temperature (&lt;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.

Název v anglickém jazyce

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

Popis výsledku anglicky

The kinetics of oxidation of carbonaceous materials at low temperature (&lt;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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/LO1208" target="_blank" >LO1208: Teoretické aspekty energetického zpracování odpadů a ochrany prostředí před negativními dopady</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

THERMOCHIM ACTA

ISSN

0040-6031

e-ISSN

—

Svazek periodika

666

Číslo periodika v rámci svazku

June 2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

82-90

Kód UT WoS článku

000441490300011

EID výsledku v databázi Scopus

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