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SYNTHESIS AND CHARACTERISATION OF SOD-, CAN- AND JBW-TYPE STRUCTURES BY HYDROTHERMAL REACTION OF KAOLINITE AT 200°C

Williams, Craig D.
; 
Roberts, Clive L.
; 
Rios Reyes, Carlos
Authors
Williams, Craig D.
 Roberts, Clive L.
 Rios Reyes, Carlos
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Issue Date
2011
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Subjects
low-silica zeolitic materials
 hydrothermal
 synthesis
 kaolinite
 dissolution.
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Abstract
low-silica zeolitic materials like sod, can and jbw crystallized after hydrothermal transformation of kaolinite in the system na2o-al2o3-sio2-h2o at 200°c, with or without the addition of a structure-directing agent. the synthesis products were characterized by xrd, sem, ftir, 29si and 27al mas-nmr and tga. after dissolution of kaolinite in alkaline medium, co-crystallization of sod and can, likely via a metastable lta intermediate, was followed by a transformation to jbw-type structure.
Citation
DYNA 78(166):38-47
Publisher
Universidad Nacional de Colombia
Journal
DYNA
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http://hdl.handle.net/2436/335745
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http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0012-73532011000200005&lng=en&nrm=iso&tlng=en
Type
Journal article
Language
en
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ISSN
00127353
23462183
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Faculty of Science and Engineering