ISSN:
0538-8066
Schlagwort(e):
Chemistry
;
Physical Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The reaction between chlorite ion and thiourea has been studied both in a closed (batch) system and in a flow reactor (CSTR). The principal stoichiometry is given by \documentclass{article}\pagestyle{empty}\begin{document}$$ 2{\rm ClO}_{\rm 2} ^{\rm - } + {\rm CS(NH}_{\rm 2} {\rm)}_{\rm 2} + {\rm 2NH}_{\rm 4} ^ + + {\rm CO}_{\rm 2} + 2{\rm Cl}^{\rm - } + {\rm SO}_{\rm 4} ^{{\rm 2 - }} $$\end{document} In batch, the reaction displays an induction period, whose length is proportional to [CS(NH2)2]/[ClO2-] [H+], followed by the rapid buildup and disappearance of a ClO2 intermediate. At [ClO2-]/[CS(NH2)2] ratios between 2.5 and 3.5, a second peak in the ClO2 absorbance is observed. In the CSTR, this iodine-free system displays simple and complex periodic oscillation, bistability, aperiodic oscillation, and birhythmicity.
Zusätzliches Material:
7 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/kin.550170409
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