New experimental data and mechanistic studies on the bromate-dual substrate-dual catalyst batch oscillator

István Szalai, K. Kurin-Csörgei, Viktor Horváth, M. Orbán

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The bromate-hypophosphite-acetone-Mn(II)-Ru(bpy)3 2+ batch oscillator was recently suggested for studying two-dimensional pattern formation. The system meets all major requirements that are needed for generation of good quality traveling waves in a thin solution layer. The serious drawback of using the system for studying, temporal and spatial dynamical phenomena is its unknown chemical mechanism. In order to develop a mechanism that explains the observed long-lasting batch oscillations the bromate-hypophosphite-acetone-Mn(II)-Ru(bpy)3 2+ oscillator was revisited. We studied the dynamics both in the total system and in some composite reactions, and kinetic measurements were carried out in three subsystems. From the new experimental results we concluded that the two oscillatory sequences observed in the full system are originated from two oscillatory subsystems, the Mn(II)-catalyzed bromate-hypophosphite-acetone and the Ru(bpy)3 2+-catalyzed bromate-bromoacetone reactions. Here we propose a mechanism which is capable of simulating the dynamical features that appeared in the complex system.

Original languageEnglish
Pages (from-to)6067-6072
Number of pages6
JournalJournal of Physical Chemistry A
Volume110
Issue number18
DOIs
Publication statusPublished - May 11 2006

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Bromates
bromates
Acetone
oscillators
acetone
catalysts
Catalysts
Substrates
complex systems
traveling waves
Large scale systems
requirements
oscillations
Kinetics
composite materials
Composite materials
kinetics

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

New experimental data and mechanistic studies on the bromate-dual substrate-dual catalyst batch oscillator. / Szalai, István; Kurin-Csörgei, K.; Horváth, Viktor; Orbán, M.

In: Journal of Physical Chemistry A, Vol. 110, No. 18, 11.05.2006, p. 6067-6072.

Research output: Contribution to journalArticle

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