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A Selective Zeolitization of Perlite via Modified Fusion Technique


Paper Type 
Contributed Paper
Title 
A Selective Zeolitization of Perlite via Modified Fusion Technique
Author 
Apinpus Rujiwatra* and Chadchai Narawisut
Email 
apinpus@chiangmai.ac.th
Abstract:
 The preparation of commercially valuable zeolitic material of faujasite type (FAU) from the reaction of perlite and sodium hydroxide employing modified fusion technique is reported. The starting material was fused with sodium hydroxide at 550 °C for 60 minutes prior to the reaction in aqueous media under autogeneous pressure at low temperature of 70 °C. This always led to the formation of faujasite type zeolite as the only crystalline product under the conditions investigated; perlite:NaOH (by weight) 1:1 - 1:1.2, solid:liquid (by weight) 1:5 - 1:7 and reaction time 7 - 21 days. The amount of exchangeable Na+ ion occluded in the zeolitized perlite suggest the material to be potential as a cation exchanger.
Start & End Page 
27 - 33
Received Date 
2003-08-21
Revised Date 
Accepted Date 
2003-10-20
Full Text 
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Keyword 
minerals, X-ray diffraction, zeolitization, zeolite, faujasite
Volume 
Vol.31 No.1 (JANUARY 2004)
DOI 
Citation 
Rujiwatra* A. and Narawisut C., A Selective Zeolitization of Perlite via Modified Fusion Technique, Chiang Mai Journal of Science, 2004; 31(1): 27-33.
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