Non-isothermal kinetic analysis of illite dehydroxylation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00338072" target="_blank" >RIV/68407700:21110/19:00338072 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/1.5120166" target="_blank" >https://doi.org/10.1063/1.5120166</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5120166" target="_blank" >10.1063/1.5120166</a>

Result language
angličtina
Original language name
Non-isothermal kinetic analysis of illite dehydroxylation
Original language description
A non-isothermal kinetics of the two-step dehydroxylation of illite is carried out using thermogravimetric analysis. The experiments are performed on powder samples with heating rates from 1 °C min–1 to 10 °C min–1 in a dynamic atmosphere of dry air. From these measurements, the values of apparent activation energy are calculated by the Kissinger method. The calculated values of Ea for the first and second step of illite dehydroxylation are (195 ± 16) kJ mol-1 and (354 ± 25) kJ mol–1, respectively. The results also show that the trans-vacant layer dehydroxylation is controlled by one-dimensional diffusion with an instantaneous nucleation rate. For the cis-vacant layer dehydroxylation, the results indicate two possible dominant mechanisms: 2D diffusion controlled process and 1D phase boundary controlled reaction if the instantaneous nucleation is assumed.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Central European Symposium on Thermophysics 2019 (CEST)
ISBN
978-0-7354-1876-9
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
AIP Conference Proceedings
Place of publication
New York
Event location
Banská Bystrica, Slovakia
Event date
Oct 16, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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