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Citation: Wang Shun, Lin Juan-Juan, Huang Zhen-Yan, Gao Qing-Yu, Zhao Min, Lin Zhen-Quan. Nonlinear Dynamics in KIO₄-SC(NH₂)₂-H₂SO₄ Reaction System[J]. Acta Physico-Chimica Sinica, ;2002, 18(03): 264-267. doi: 10.3866/PKU.WHXB20020315 shu

Nonlinear Dynamics in KIO₄-SC(NH₂)₂-H₂SO₄ Reaction System

1.
Wenzhou Normal College,Wenzhou　325027;China University of Mining and Technology,College of Chemical Engineering,Xuzhou　221008

Received Date: 6 August 2001
Available Online: 15 March 2002

The reaction between periodate and thiourea has been studied in batch,semibatch reactor and CSTR (continuous stirredtank reactor).A new periodate oscillator has been found.The nonlinear reaction system displays a single peak or oli oscillations concerning the change of pH,Pt potential and iodine absorption in batch.While,oscillations of potential on Pt and Iselective electrodes are observed in CSTR and semibatch .The oscillation behavior is dependent on [KIO4]0/[SC(NH2)2]0 ratio and the initial concentration of acid.A preliminary mechanism based on the valence change of iodine may explain the kinetic phenomena in the present reaction system.
- Oscillation;Oli oscillation;Nonlinear dynamics;Periodate;Thiourea
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沈阳化工大学材料科学与工程学院沈阳 110142

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Nonlinear Dynamics in KIO₄-SC(NH₂)₂-H₂SO₄ Reaction System