Complex motion of precipitation bands

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Formation and dynamics of an Al(OH)_3 precipitation ring is studied by diffusing NaOH into a gel containing AlCl_3. Limited feeding of the outer electrolyte (NaOH) is found to yield an intricate ring-dynamics which involves stopping and reversal of the direction of motion of the precipitation ring, and evolution into stationary multi-ring structures. A model of the ring-dynamics is developed by combining a phase separation scenario for the precipitation with the redissolution (complex formation) of the precipitate in the excess of the outer electrolyte.
6 pages, 15 figures

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Chemical Physics, Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/119947

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/physics/0612012
 http://arxiv.org/abs/physics/0612012
 doi:10.1016/j.cplett.2006.11.051

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arXiv