High-frequency oscillations in the Belousov - Zhabotinsky reaction

Tamás Bánsági, Marcin Leda, Masahiro Toiya, Anatol M. Zhabotinsky, Irving R. Epstein

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Chemical oscillations in the classic Belousov-Zhabotinsky (BZ) system typically have a period of a few minutes, which can be increased significantly by changing the organic substrate. Here we show that by changing the temperature and concentrations, an increase of 3-4 orders of magnitude in the frequency of BZ oscillations can be obtained. At elevated temperatures, in high concentration mixtures, the cerium-catalyzed reaction exhibits sinusoidal oscillations with frequencies of 10 Hz or greater. We report the effect of temperature on the frequency and shape of oscillations in experiments under batch conditions and in a four-variable model. We show that our simple model accurately captures the complex temporal behavior of the system and suggests paths toward even higher frequencies.

Original languageEnglish
Pages (from-to)5644-5648
Number of pages5
JournalJournal of Physical Chemistry A
Volume113
Issue number19
DOIs
Publication statusPublished - May 14 2009

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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