Complex motion of precipitation bands

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Formation and dynamics of an Al(OH)3 precipitation ring is studied by diffusing NaOH into a gel containing AlCl3. 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.

Original languageEnglish
Pages (from-to)286-291
Number of pages6
JournalChemical Physics Letters
Volume433
Issue number4-6
DOIs
Publication statusPublished - Jan 12 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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