Houngkamhang, Nongluck

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Houngkamhang, Nongluck
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nongluck.ho@kmitl.ac.th

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    Item type:Publication,
    Synthesis of Zeolite Y from Kaolin via hydrothermal method
    (2019-01-01)
    Krongkrachang, Pimpetch
    ;
    Thungngern, Pimpreeya
    ;
    Asawaworarit, Panuruj
    ;
    Houngkamhang, Nongluck
    ;
    Eiad-Ua, Apiluck
    ZeoliteY has been successfully synthesized via a two-step hydrothermal method with kaolin from Lampang province as a precursor. For the first hydrothermal, kaolin with an addition of sodium silicate (NaSi<inf>3</inf>O<inf>7</inf>) or tetraethyl orthosilicate (TEOS) was mixed with sodium hydroxide (NaOH) and autoclaved for 200<sup>o</sup>C at different reaction times for 6, 8 and 10 h, respectively. Sodium hydroxide and hydrochloric acid were added into the compound mixture to adjust its pH before it was formed into gel. After a second time hydrothermal at 90°C for 2 days, the solid product was filtered out, washed by deionized water and dried overnight. The zeolite was then characterized by X-ray diffraction spectroscopy (XRD) to identify type and crystallization, scanning electron microscopy (SEM) for morphology, Fourier transform infrared spectroscopy (FTIR) to identify its functional group and N<inf>2</inf> adsorption to study the adsorption/desorption isotherm and pore distribution. From N<inf>2</inf> adsorption-desorption isotherm, it is revealed that the zeolite obtained by this method have 571 m<sup>2</sup>/g surface area and pore size distribution around 4.89 nm.