Ultrasound-assisted crystallization (sonocrystallization)

The positive influence of ultrasound (US) on crystallization processes is shown by the dramatic reduction of the induction period, supersaturation conditions and metastable zone width. Manipulation of this influence can be achieved by changing US-related variables such as frequency, intensity, power...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2007-09, Vol.14 (6), p.717-724
Main Authors: Luque de Castro, M.D., Priego-Capote, F.
Format: Article
Language:English
Subjects:
Chemistry
Colloids - chemistry
Colloids - radiation effects
Computer Simulation
Crystallization
Crystallization - methods
Exact sciences and technology
General and physical chemistry
Induction period
Metastable zone width
Models, Chemical
Models, Molecular
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Sonication
Supersaturation
Ultrasonic chemistry
Ultrasound
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Description
Summary:The positive influence of ultrasound (US) on crystallization processes is shown by the dramatic reduction of the induction period, supersaturation conditions and metastable zone width. Manipulation of this influence can be achieved by changing US-related variables such as frequency, intensity, power and even geometrical characteristics of the ultrasonic device ( e.g. horn type size). The volume of the sonicated solution and irradiation time are also variables to be optimized in a case-by-case basis as the mechanisms of US action on crystallization remain to be established. Nevertheless, the results obtained so far make foreseeable that crystal size distribution, and even crystal shape, can be ‘tailored’ by appropriate selection of the sonication conditions.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2006.12.004