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Kinetic study of the Ce(III)- or ferroin-catalyzed Belousov-Zhabotinsky reaction with ethyl- or butyl-malonic acid

✍ Scribed by Ying-Fen Chen; Hong-Ping Lin; Shih Sheng Sun; Jing-Jer Jwo

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
450 KB
Volume
28
Category
Article
ISSN
0538-8066

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✦ Synopsis

In a stirred batch experiment, ferroin [Fe(phen):') behaves differently from Ce(lll) as a catalyst for the Belousov-Zhabotinsky reaction with ethyl-or n-butyl-malonic acid 1 EtMA or BuMAl 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)rnalonic acid (BrBuMA) with Ce(lV) or Fe(phen):' ion were studied Under aerobic or anaerobic conditions, the order of reactivity toward Ce(lV) oxidation is MeMA > EtMA > BuMA > BrMeMA >> (BrEtMA, BrBuMA]. Under aerobic conditions, the order of reactivity toward reacting with Fe(phen):' ion is MeMA > (BuMA, EtMA) >> (BrMeMA, BrEtMA, BrBuMAl. The experimental results are rationalized.

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