Publication: Malachite Crystallisation in a Diffusing-Reacting System
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Publication Date
1998
Authors
Fernández Díaz, Lurdes
López Andrés, Sol
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Wiley-VCH Verlag
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Abstract
The crystallisation of malachite has been studied in a system involving the counter diffusion of Cu2+ and CO3 through a silica gel column at 25 ºC. In such a system supersaturation is a function of time and position along gel column. Under these conditions kinetic variables are required in order to justify nucleation behaviour. Supersaturation rate has revealed as the most important parameter controlling nucleation features (waiting time, position of the precipitate, and metastability levels). The results presented here confirm the general nucleation behaviour reported by Prieto et al., (1989, 1991, 1994) for other carbonates. On the other hand, supersaturation changes during crystallisation process control the morphological evolution of malachite crystals.
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"This is the peer reviewed version of the following article: [Malachite Crystallisation in a Diffusing‐Reacting System], which has been published in final form at https://doi.org/10.1002/(SICI)1521-4079(1998)33:1<51::AID-CRAT51>3.0.CO;2-H. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions."