Ultrasonic waves induce rapid zeolite synthesis in a seawater solution

► Hydrothermal process in seawater preceded or not by sonication were compared. ► Ultrasonic treatment reduced the crystallization temperature. ► The results confirm the previous findings obtained using distilled water. ► The crystallization efficiency is surprisingly lower when applied with seawate...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2013-01, Vol.20 (1), p.32-36
Main Authors: Belviso, Claudia, Cavalcante, Francesco, Fiore, Saverio
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
Fly ash
General and physical chemistry
Ion-exchange
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Seawater
Surface physical chemistry
Ultrasonic chemistry
Ultrasound
Zeolite synthesis
Zeolites: preparations and properties
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Summary:► Hydrothermal process in seawater preceded or not by sonication were compared. ► Ultrasonic treatment reduced the crystallization temperature. ► The results confirm the previous findings obtained using distilled water. ► The crystallization efficiency is surprisingly lower when applied with seawater. The synthesis of zeolites from fly ash was performed through a low-temperature hydrothermal process with seawater. Compared with the results obtained using the same hydrothermal method but in the absence of sonication, the application of an ultrasonic pre-treatment to the conventional hydrothermal process with seawater reduces the crystallization temperature below that observed when hydrothermal synthesis is performed using distilled water.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2012.06.004