Citation:
Gao Qing-Yu, Li Bao-Min, Sun Kang, Cai Zun-Sheng, Zhao Xue-Zhuang. Nonlinear Dynamics in ClO-2-SC(NH2)2 Reaction System[J]. Acta Physico-Chimica Sinica,
;2001, 17(03): 257-260.
doi:
10.3866/PKU.WHXB20010315
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The reaction between chlorite and thiourea could display batch oli os cillation and CSTR oscillation of pH.Batch pH peak has the same character with p H oscillation in a CSTR.The oxidation of thiourea produced intermediates such as HOSC(NH)NH2,HO2SC(NH)NH2,HO3S(NH)NH2 and bisulfite.The valence change of sulfur has close relation with pH dynamics.Through the mechanistic analysis,a general model of sulfur(-II) oxidation,which consists of negative hydrogen ion feedback (S(-II) to S(0)),a transition process of S(0) to S(IV) and positive proton feed back from S(IV) to S(VI),could simulate batch oli oscillation and CSTR oscillat ion.This result is setting up a new channel to uncover the reaction mechanism an d simulate the nonlinear phenomena in the reactions between chlorite and Sulfur( -II).
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