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dc.contributor.authorRios, Carlos A.
dc.contributor.authorWilliams, Craig D.
dc.contributor.authorFullen, Michael A.
dc.date.accessioned2009-01-28T19:48:45Z
dc.date.available2009-01-28T19:48:45Z
dc.date.issued2009
dc.identifier.citationApplied Clay Science, 42(3-4): 446-454.
dc.identifier.issn01691317
dc.identifier.doi10.1016/j.clay.2008.05.006
dc.identifier.urihttp://hdl.handle.net/2436/48195
dc.description.abstractThe synthesis of zeolite Linde Type A (LTA) from kaolinite by two different routes: (1) conventional hydrothermal alkaline activation and (2) alkaline fusion prior to hydrothermal reaction, as well as its nucleation and growth history, were investigated. Using the first method, co-crystallization of sodalite and cancrinite, probably via an unstable zeolite LTA intermediate, was observed during treatment of kaolinite in NaOH solutions. The addition of a SiO2 source promoted the co-precipitation of several zeolite phases, including zeolites LTA, X and P, with traces of sodalite and cancrinite. By fusion with NaOH followed by hydrothermal reaction, kaolinite was converted into zeolite LTA. Synthesized materials appeared stable thermodynamically under the experimental conditions. The synthesis products have been characterized by X-ray diffraction, scanning electron microscopy and Fourier Transform Infrared Spectroscopy.
dc.language.isoen
dc.publisherAmsterdam: Elsevier
dc.relation.urlhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V8Y-4SM1T8J-2&_user=1644469&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000054077&_version=1&_urlVersion=0&_userid=1644469&md5=e15e4fe9b36e59218527af72af87b804
dc.subjectSynthesis
dc.subjectKaolinite
dc.subjectZeolite LTA
dc.subjectZeolites
dc.subjectSodalite
dc.subjectCancrinite
dc.titleNucleation and growth history of zeolite LTA synthesized from kaolinite by two different methods.
dc.typeJournal article
dc.identifier.journalApplied Clay Science
html.description.abstractThe synthesis of zeolite Linde Type A (LTA) from kaolinite by two different routes: (1) conventional hydrothermal alkaline activation and (2) alkaline fusion prior to hydrothermal reaction, as well as its nucleation and growth history, were investigated. Using the first method, co-crystallization of sodalite and cancrinite, probably via an unstable zeolite LTA intermediate, was observed during treatment of kaolinite in NaOH solutions. The addition of a SiO2 source promoted the co-precipitation of several zeolite phases, including zeolites LTA, X and P, with traces of sodalite and cancrinite. By fusion with NaOH followed by hydrothermal reaction, kaolinite was converted into zeolite LTA. Synthesized materials appeared stable thermodynamically under the experimental conditions. The synthesis products have been characterized by X-ray diffraction, scanning electron microscopy and Fourier Transform Infrared Spectroscopy.


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