Oscillations in the Concentration of Fluoride Ions Induced by a pH Oscillator

Viktor Horváth, Krisztina Kurin-Csörgei, Irving R. Epstein, Miklós Orbán

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Sustained oscillations in the concentration of free fluoride ions can be generated when the BrO3--SO3 2--Mn(II) oscillator is coupled either to Al3+-F - complex formation or to the Ca2+-F- precipitation process in a flow reactor. By careful analysis of the relevant equilibria and optimization of the reactant concentrations, one can obtain [F-] oscillations of several orders of magnitude as measured with an ion-selective electrode. The BrO3--SO3 2--Mn(II)-Al(NO3)3-NaF system also exhibits bistability, that is, simultaneously stable steady states of high and low [F-].

Original languageEnglish
Pages (from-to)4271-4276
Number of pages6
JournalJournal of Physical Chemistry A
Volume112
Issue number18
DOIs
Publication statusPublished - May 8 2008

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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