About: The kinetics of Al-Si spinel phase crystallization from calcined kaolin

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 +/- 2 kJ mol-1was 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. This value 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 phases interface. 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 +/- 2 kJ mol-1was 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. This value 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 phases interface. (en)
Title	The kinetics of Al-Si spinel phase crystallization from calcined kaolin The kinetics of Al-Si spinel phase crystallization from calcined kaolin (en)
skos:prefLabel	The kinetics of Al-Si spinel phase crystallization from calcined kaolin The kinetics of Al-Si spinel phase crystallization from calcined kaolin (en)
skos:notation	RIV/00216305:26310/10:PU88561!RIV15-MSM-26310___
http://linked.open...avai/riv/aktivita	O P
http://linked.open...avai/riv/aktivity	O, P(2B08024), P(ED0012/01/01)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Šoukal, František Ptáček, Petr Havlica, Jaromír Brandštetr, Jiří Opravil, Tomáš Křečková, Magdaléna
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta chemická
http://linked.open...dnocenehoVysledku	266388
http://linked.open...ai/riv/idVysledku	RIV/00216305:26310/10:PU88561
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Al-Si spinel, Kaolin, Kaolinite, Heterogeneous kinetics, Thermal analysis (en)
http://linked.open.../riv/klicoveSlovo	Al-Si spinel Heterogeneous kinetics Thermal analysis Kaolinite Kaolin
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[0D65AEB9D456]
http://linked.open...i/riv/nazevZdroje	JOURNAL OF SOLID STATE CHEMISTRY
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	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 Centres for materials research at FCH BUT
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	183
http://linked.open...iv/tvurceVysledku	Šoukal, František Havlica, Jaromír Brandštetr, Jiří Opravil, Tomáš Ptáček, Petr Křečková, Magdaléna
issn	0022-4596
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	26310

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