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Kinetic study of the Ce(III)‐ or ferroin‐catalyzed Belousov‐Zhabotinsky reaction with ethyl‐ or butyl‐malonic acid
Author(s) -
Chen YingFen,
Lin HongPing,
Sun Shih Sheng,
Jwo JingJer
Publication year - 1996
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1996)28:5<345::aid-kin3>3.0.co;2-v
Subject(s) - chemistry , malonic acid , belousov–zhabotinsky reaction , catalysis , reactivity (psychology) , medicinal chemistry , inorganic chemistry , organic chemistry , medicine , pathology , alternative medicine
In a stirred batch experiment, ferroin (Fe(phen) 3 2+ ) behaves differently from Ce(III) as a catalyst for the Belousov‐Zhabotinsky reaction with ethyl‐ or n ‐butyl‐malonic acid (EtMA or BuMA) The effects of bromate ion, organic substrate, metal‐ion catalyst, and sulfuric acid on the oscillating pattern were investigated. The kinetics of the reactions of methylmalonic acid (MeMA), bromomethyl‐malonic acid (BrMeMA), EtMA, bromoethylmalonic acid (BrEtMA), BuMA, bromo( n ‐butyl)malonic acid (BrBuMA) with Ce(IV) or Fe(phen) 3 3+ ion were studied. Under aerobic or anaerobic conditions, the order of reactivity toward Ce(IV) oxidation is MeMA > EtMA > BuMA > BrMeMA >> (BrEtMA, BrBuMA). Under aerobic conditions, the order of reactivity toward reacting with Fe(phen) 3 3+ ion is MeMA > (BuMA, EtMA) >> (BrMeMA, BrEtMA, BrBuMA). The experimental results are rationalized. © 1996 John Wiley & Sons, Inc.