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New Observations on the Belousov‐Zhabotinskii Reaction. The Oscillating Reaction of Organic Gallic Acid and Potassium Bromate Catalyzed by 1,10‐ o ‐Phenanthroline‐Iron(II) Complex
Author(s) -
Jwo JingJer,
Chang EngFen
Publication year - 1986
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198600011
Subject(s) - chemistry , potassium bromate , bromate , inorganic chemistry , cerium , catalysis , gallic acid , potassium , belousov–zhabotinsky reaction , sulfuric acid , phenanthroline , redox , metal , organic chemistry , bromide , antioxidant
Abstract The oscillating reaction involving organic gallic acid (GA), potassium bromate, and a metal ion complex has been reinvestigated. In contrast to other previous reports, this oscillating reaction is catalyzed by the [Fe(phen) n ] 2+ ion (phen = 1,10‐ o ‐phenanthroline, n =1, 2, 3) rather than by the cerium ion. The characteristics of the oscillations depend on the temperature and on the concentrations of the potassium bromate, gallic acid, [Fe(phen) n ] 2+ , and sulfuric acid. A cyclic voltammetric study indicates that the redox potential and the reversibility of the [Fe(phen) n ] 2+/3+ couple play a major role in catalyzing this oscillating system.