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Citation: Gao Qing-Yu, Wei Xian-Yong, Hou Zhe, Cai Zun-Sheng, Zhao Xue-Zhuang. General Features of Nonlinear Dynamics in the Batch Oxidation of S(-II)Compounds[J]. Acta Physico-Chimica Sinica, ;1999, 15(04): 351-355. doi: 10.3866/PKU.WHXB19990412 shu

General Features of Nonlinear Dynamics in the Batch Oxidation of S(-II)Compounds

1.
Department of Energy Utilization and Chemical Engineering,China University of Mining and Technology,Xuzhou 221008

Received Date: 19 May 1998
Available Online: 15 April 1999

The general dynamic features of the batch oxidation of Sulfur(-Ⅱ) compounds (S2-,thiosuifae, thiocynate and thiourea et al. ) were discussed. The changes of pH with reaction time consist of a rise and two separate drops. Dynamic model was proposed, further experimental studies on the batch oxidation of thiourea and thiocyanate by ClO2- were also carried out. Simulation curve was well consistent with experiment in a batch reactor.
Non-catalytic oscillation of peroxide (hydrogen peroxide, persulfate et al. ) - S(-Ⅱ)-compound system resulted from the nonlinear dynamic of sulfur oxidation. In the oxidation of S(-Ⅱ)-compounds by oxyhalogen compounds(ClO2 - et al. ), nonlinear dynamics of both oxyhalogen compound and sulfur compound should be considered simultaneously. So complex phenomena such as birhythmicity and chaos may be discovered.
- Sulfur(-II)compound,
- Nonlinear dynamics,
- Autocatalysis
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