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首页> 外文期刊>International Journal of Chemistry and Chemical Engineering >Synthesis of Zeolite Y from Kaolin Using Novel Method of Dealumination
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Synthesis of Zeolite Y from Kaolin Using Novel Method of Dealumination

机译：利用新型近期曲调合成高岭土的沸石y

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摘要

In this study Zeolite Y was successfully synthesized from local kaolin in Ado-Odo Ota, Ogun state Nigeria through a novel process of dealumination. The thermal activation of kaolin was achieved through the process of metakaolinization at 850 °C for 6 hours in a furnace and dealumination with H2SO4 in order to achieve a desire silica/alumina molar ratio between 3 and 8. Zeolitization involved alkaline attack of dealuminated metakaolin and its consequent transformation into Zeolite Y crystal. Silica/Alumina molar ratio of 5.84 of metakaolin was synthesized under hydro thermal treatment with aqueous NaOH at atmospheric pressure. It was then aged for 7 days at room temperature and crystallized at 100 °C for 24 hours; Zeolite NaY of molar ratio of 3.46 was achieved and then modified to its hydrogen form by ion exchange with NH4Cl. The molar ratio of Zeolite Y in hydrogen form is 3.22. The samples were characterized with X-ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM). The result showed that zeolite Y was synthesized from Arobieye mined kaolin with a molar ratio of 6SiO2: Al2O3 : 9Na2O : 24H2O by ageing at room temperature for 24 hours and crystallized at 100 °C for 24 hours.
机译：在这项研究中，通过新的荒营过程从Ado-Odo Ota，Ogu-Odo Ota的当地高岭土成功地合成了沸石Y。通过在850℃下在炉子和H2SO4的垃圾中在850℃下进行6小时来实现高岭土的热活化，以实现3至8之间的终止二氧化硅/氧化铝摩尔比。烧氮化有助于浸润的偏达吡嗪和碱性发作其转化为沸石Y晶体。在大气压下用NaOH水溶液在水溶液中合成5.84的二氧化硅/氧化铝摩尔比。然后在室温下老化7天，并在100℃下结晶24小时;达到摩尔比为3.46的沸石NY，然后通过与NH4Cl的离子交换改性其氢形式。沸石Y以氢形式的摩尔比为3.22。用X射线荧光（XRF），X射线衍射（XRD）和扫描电子显微镜（SEM）表征样品。结果表明，沸石Y由摩尔比合成，摩尔比为6SiO 2：Al 2 O 3：9NA2O：24H2O在室温下老化24小时，并在100℃下结晶24小时。

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