Experimental study of a closed system in the sodium chlorite–iodine–ethyl acetoacetate oscillation reaction by UV–Vis and online FTIR spectrophotometric method

被引：0
作者：
Chunying Yan
Laishun Shi
Fang Guo
机构：
[1] South Campus,School of Chemistry and Chemical Engineering
[2] Shandong University,undefined
来源：
Research on Chemical Intermediates | 2011年 / 37卷
关键词：
Sodium chlorite; Oscillation reaction; Closed reaction system; UV–Vis spectrophotometry; Online FTIR; Ethyl acetoacetate;
D O I：
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学科分类号：
摘要：
The sodium chlorite–iodine–ethyl acetoacetate (EAA) chemical oscillatory reaction system was studied by UV–Vis and online FTIR spectrophotometric method. The oscillation phenomenon does not occur as long as the reactants are mixed. There is a pre-oscillatory or induction period. The amplitude is small at the beginning stage and then increases with reaction time. Finally, the oscillation ceases suddenly. The amplitude and the number of oscillations are associated with the initial concentration of sodium chlorite, iodine, EAA and sulfuric acid. The equations for the triiodide ion reaction rate changing with reaction time and the initial concentrations on the oscillation stage were obtained. The intermediates were detected by the online FTIR analysis. Based upon the experimental data in this work and in the literature, a plausible reaction mechanism was proposed for the oscillation reaction.
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页码：929 / 947
页数：18
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