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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

  • DOI - Digital Object Identifier

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

  • Czech description

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

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

  • 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