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Wolverhampton Intellectual Repository and E-Theses > School of Applied Sciences > Research Centre in Applied Sciences  > Plant and Environmental Research Group > Synthesis of Zeolites and Zeotypes by Hydrothermal transformation of Kaolinite and Metakaolinite.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/30311
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Title: Synthesis of Zeolites and Zeotypes by Hydrothermal transformation of Kaolinite and Metakaolinite.
Authors: Rios, Carlos A.
Williams, Craig D.
Maple, Martin J.
Citation: BISTUA, 5(1): 15-26
Publisher: Bucaramanga, Colombia: Universidad de Pamplona
Journal: BISTUA
Issue Date: 2007
URI: http://hdl.handle.net/2436/30311
Additional Links: http://redalyc.uaemex.mx/redalyc/src/inicio/IndArtRev.jsp?iCveNumRev=7689&iCveEntRev=903&institucion=
Abstract: The synthesis of zeolitic materials by hydrothermal transformation of kaolinite and metakaolinite in NaOH solutions of various concentrations was investigated between 100 and 200 degrees C, over different reaction times, using in some cases precipitated SiO2 or organic templates. Materials were obtained, including clathrasils: cancrinite (CAN), sodalite (SOD), and Linde Type A (LTA), faujasite (FAU), NaP1 (GIS), analcime (ANA) and nepheline hydrate I (JBW) zeolites. In general, co-crystallization of CAN and SOD, likely via an unstable LTA zeolite intermediate, was observed after dissolution of kaolinite at low temperature; although the feldspathoids tend to be unstable at high temperature. LTA zeolite was synthesized after metakaolinite reaction, with minor amount of FAU zeolite, ANA and SOD. Solids were characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA).
Type: Article
Language: en
Keywords: Synthesis
Kaolinite
Metakaolinite
Cancrinite
Sodalite
Zeolites
Linde Type A (LTA)
Spectroscopy, Fourier Transform Infrared
SEM
Scanning Electron Microscope
Faujasite
FTIR
X Ray Diffraction
Microscopy, Electron
ISSN: 0120-4211
Appears in Collections: Plant and Environmental Research Group

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