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Author: search.filters.author.Eiad-Ua, ApiluckSubject: search.filters.subject.Metakaolin

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    Item type:Publication,
    Surface Enhancement and Structure Formation of Metakaolin from Thailand Kaolin on the Various Calcination Temperature
    (2020-01-01)
    Tanwongwan, Worapak
    ;
    Wongkitikun, Thanapat
    ;
    Onpecht, Kobchai
    ;
    Srilai, Suphada
    ;
    Assabumrungrat, Suttichai
    The metakaolin was chosen as a starting material for the synthesis of the zeolite because it is high crystallinity, reactivity and purity of raw material. Kaolin from Thailand which was selected from 3 different sources including Ratchaburi, Lampang, and Uttaradit were using as starting materials for synthesis of metakaolin by calcination temperature of this study were chosen in the range of 500 to 1000 °C for 2 h. Calcination temperature is significantly affect crystalline size, function group, and configuration of metakaolin by the results which obtained from X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy techniques were indicated that the best metakaolin was obtained from Uttaradit's kaolin which was calcined at 1000 <sup>o</sup>C for 2h by it shows the lowest impurities.
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    Influence of hydrothermal and calcination process on metakaolin from natural clay
    (2018-09-05)
    Srilai, Suphada
    ;
    Kaewtrakulchai, Napat
    ;
    Panomsuwan, Gasidit
    ;
    Fuji, Masayoshi
    ;
    Eiad-Ua, Apiluck
    In this study, metakaolin was synthesized from natural clay from Lampang province via hydrothermal and calcination process. The hydrothermal process was studied at different temperature from 160°C, 180°C and 200°C for 4, 8 and 12 hours. The calcination process was studied at different temperature from 500 to 900°C for 2 hours. Regarding the characterization, physical morphology of resulting products was observed by scanning electron microscope showing that the surface of resulting product was enhanced its surface area with more roughness when the temperature was increased. Moreover, FT-IR spectroscopy was applied for the chemical structure analysis indicating that Lampang clay can be transformed into metakaolin using hydrothermal at 200°C for 8 hours followed by the calcination at 800°C and 900°C as well as through the most condition for this studied. The improvement of the surface area of metakaolin leads to high metal dispersion for catalytic activity of the catalyst.