MODELING THE OSCILLATORY BROMATE OXIDATION OF FERROIN IN OPEN SYSTEMS

被引:38
作者
KEKI, S
MAGYAR, I
BECK, MT
GASPAR, V
机构
[1] LAJOS KOSSUTH UNIV,DEPT PHYS CHEM,POB 7,H-4010 DEBRECEN,HUNGARY
[2] W VIRGINIA UNIV,DEPT CHEM,MORGANTOWN,WV 26506
关键词
D O I
10.1021/j100183a042
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A model for the ferroin-bromate-bromide-sulfuric acid system in a continuously stirred (flow-through) tank reactor has been constructed by extending the Noyes-Field-Thompson mechanism with the following composite processes: (a) ferroin-bromate, (b) ferroin-bromous acid, (c) ferroin-hypobromous acid, (d) ferroin-bromine, (e) ferriin-bromide, and (f) ferriin-bromine. The calculated high-amplitude oscillations and kinetic phase diagram are in good accordance with the experiments reported earlier. By completing the scheme with a reaction step accounting for the precipitation and dissolution of a ferroin-tribromide salt, the batch oscillations found at high concentrations of reactants can also be simulated.
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页码:1725 / 1729
页数:5
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