Orbán M, Kurin-Csörgei K, Zhabotinsky A M, Epstein I R
Department of Inorganic and Analytical Chemistry, L. Eötvös University, H-1518 Budapest 112, P.O. Box 32, Hungary.
Faraday Discuss. 2001(120):11-9; discussion 85-104.
A modified version of the short-lived BrO3(-)-H2PO2(-)-Mn(II)-N2 oscillator, the BrO3(-)-H2PO2(-)-acetone-dual catalyst system, where the catalyst pair can be Mn(II)-Ru(bpy)3SO4, or Mn(II)-ferroin, or Mn(II)-diphenylamine, shows long-lasting batch oscillations in the potential of a Pt electrode and in colour, accompanying periodic transitions between the oxidised and reduced forms of the catalysts. Experimental conditions for the oscillations are established. The origin of the batch oscillations and the role of the catalyst pair in the oscillatory behaviour are discussed. The new system is ideally suited to the study of waves and patterns in reaction-diffusion systems, since in addition to the longevity of its spatial behaviour in batch, it produces no gaseous or solid products and exhibits significant photosensitivity.
短寿命的BrO3(-)-H2PO2(-)-Mn(II)-N2振荡器的改良版本,即BrO3(-)-H2PO2(-)-丙酮 - 双催化剂体系,其中催化剂对可以是Mn(II)-Ru(bpy)3SO4、或Mn(II)-亚铁菲绕啉、或Mn(II)-二苯胺,该体系在铂电极的电位和颜色方面显示出持久的批量振荡,同时催化剂的氧化态和还原态之间会发生周期性转变。确定了振荡的实验条件。讨论了批量振荡的起源以及催化剂对在振荡行为中的作用。新体系非常适合研究反应扩散系统中的波和图案,因为除了其在批量反应中的空间行为具有持久性外,它不产生气态或固态产物,并且具有显著的光敏性。