The kinetics of Al-Si spinel phase crystallization from calcined kaoline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F11%3APU96668" target="_blank" >RIV/00216305:26310/11:PU96668 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The kinetics of Al-Si spinel phase crystallization from calcined kaoline
Original language description
The crystallization of Al-Si spinel from medium ordered kaolin with high content of kaolinite was investigated using the differential thermal analysis (DTA). The apparent activation energy of the process was evaluated from the dependence of exothermic peak of crystallization on heating rate. Within the applied interval of heating rate (1-40 K min(-1)) the temperature of peak maximum increases from initial value of 1220.5 K in about 54.2 K. The apparent activation energy of the process 856 +/- 2kJ mol(-1) was calculated using the Kissinger equation. The growth morphology of Al-Si spinel crystal was evaluated from the Avrami parameter. The average value of morphology parameter determined within the observed interval of heating rate is 3.08 +/- 0.03. Thisvalue indicates that crystallization mechanism of Al-Si spinel phase proceeds by bulk nucleation of the new phase with constant number of nuclei and that the three-dimensional growth of crystals is controlled by the reaction rate on the
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Result continuities
Project
<a href="/en/project/2B08024" target="_blank" >2B08024: Research on the ecologic binder based on the geopolymer structure which is able to immobilize the potentially harmful substances from bulk-cargo produced industrial wastes, and its further application into building industry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF SOLID STATE CHEMISTRY
ISSN
0022-4596
e-ISSN
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Volume of the periodical
2011
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
2661-2667
UT code for WoS article
000284179800009
EID of the result in the Scopus database
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