Non-isothermal Kinetic Analysis of Processes Occurring During Thermal Treatment of Kaolinite

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312610" target="_blank" >RIV/68407700:21110/17:00312610 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4994508" target="_blank" >http://dx.doi.org/10.1063/1.4994508</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4994508" target="_blank" >10.1063/1.4994508</a>

Result language
angličtina
Original language name
Non-isothermal Kinetic Analysis of Processes Occurring During Thermal Treatment of Kaolinite
Original language description
A non-isothermal kinetic analysis of processes occurring during thermal treatment of kaolinite is carried out using differential thermal analysis on powder samples with heating rates from 1 to 10 °C min–1 in static air atmosphere. For the parameterization of dehydroxylation process and crystallization of Al-Si spinel phase from metakaolinite the Kissinger method is used. The determined values of apparent activation energy for the dehydroxylation of kaolinite and formation of Al-Si spinel phase are (163 ± 11) kJ mol–1 and (826 ± 16) kJ mol–1, respectively. For the dehydroxylation of kaolinite the diffusion controlled growth of a new phase with a decreasing nucleation rate is determined as a mechanism of the process. The results also show that the formation of Al-Si spinel phase from metakaolinite is controlled by grain edge nucleation after saturation.
Czech name
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Czech description
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Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
THERMOPHYSICS 2017: 22nd International Meeting of Thermophysics 2017 and 4th Meeting of EnRe 2017
ISBN
978-0-7354-1546-1
ISSN
—
e-ISSN
1551-7616
Number of pages
5
Pages from-to
—
Publisher name
American Institute of Physic AIP
Place of publication
Santa Fe
Event location
Těrchová
Event date
Sep 12, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000426600400033

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