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Investigation of nucleation and crystal growth kinetics of nickel manganese oxalates

Aoun, Montaha and Guillemet, Sophie and Lemaître, Jacques and Jones, Alan Investigation of nucleation and crystal growth kinetics of nickel manganese oxalates. (2005) Journal of Crystal Growth, 2. 531-539. ISSN 0022-0248

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Official URL: http://dx.doi.org/10.1016/j.jcrysgro.2005.02.032


The nucleation and the crystal growth rates of mixed nickel manganese oxalates have been determined from the changes of the ionic concentration of the solution and the crystal size distribution during the precipitation process within a supersaturation range 0–0.1 M. Thermodynamic solubility calculations have been used to identify the different species contributing the precipitation reaction and for estimation of the thermodynamic constant. Experimental data show that the nucleation rate of mixed nickel manganese oxalate in this supersaturation range is consistent with a primary heterogeneous mechanism and was found to obey to an exponential law. The crystal growth rates indicate a surface-integration-controlled mechanism with a first-order law with respect to the supersaturation.

Item Type:Article
HAL Id:hal-03601588
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > University College of London - UCL (UNITED KINGDOM)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Polytechnique Fédérale de Lausanne - EPFL (SWITZERLAND)
Laboratory name:
Deposited On:14 May 2008 07:01

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