Issue 21, 2005
From the journal:

Physical Chemistry Chemical Physics

Experimental study and Monte-Carlo simulation of the nucleation and growth processes during the dehydration of Li2SO4·H2O single crystals

Loïc Favergeon,a   Michèle Pijolat,a   Françoise Valdivieso*a  and  Céline Helbertb  

* Corresponding authors

a LPMG CNRS UMR 5148, Centre SPIN, Ecole Nationale Supérieure des Mines de Saint-Étienne, Saint-Étienne, France
E-mail: fvaldiv@emse.fr
Fax: 33(0)477499694
Tel: 33(0)477420291

b 3MI, Ecole Nationale Supérieure des Mines de Saint-Étienne, Saint-Étienne, France

Abstract

A kinetic model for the dehydration of lithium sulfate monohydrate is proposed in order to account for experimental data obtained on single crystals by thermogravimetry at 80 °C under fixed water vapour pressure, and by optical microscopy. This model is based on the assumptions of Mampel’s model, the nucleation takes place randomly at the surface of the solid and is followed by isotropic growth toward the centre of the crystal. Calculated rates dα/dt are obtained by means of Monte-Carlo simulations and compared to the experimental ones, which leads to the determination of two kinetic constants: the areic frequency of nucleation (in number of nuclei m−2 s−1) and the areic reactivity of growth (in mol m−2 s−1).

Graphical abstract: Experimental study and Monte-Carlo simulation of the nucleation and growth processes during the dehydration of Li2SO4·H2O single crystals

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Article information

DOI
https://doi.org/10.1039/B507644G
Article type
Paper
Submitted
31 May 2005
Accepted
06 Sep 2005
First published
13 Sep 2005

Phys. Chem. Chem. Phys., 2005,7, 3723-3727

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Experimental study and Monte-Carlo simulation of the nucleation and growth processes during the dehydration of Li2SO4·H2O single crystals

L. Favergeon, M. Pijolat, F. Valdivieso and C. Helbert, Phys. Chem. Chem. Phys., 2005, 7, 3723 DOI: 10.1039/B507644G

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