物理化学学报 >> 1999, Vol. 15 >> Issue (04): 351-355.doi: 10.3866/PKU.WHXB19990412

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闭系中硫(-II)氧化的非线性动力学一般特征

高庆宇, 魏贤勇, 侯哲, 蔡遵生, 赵学庄   

  1. 中国矿业大学能源化工系，江苏 徐州 221008|南开大学化学系，天津 300071
  • 收稿日期:1998-05-19 修回日期:1998-08-19 发布日期:1999-04-15
  • 通讯作者:

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

Gao Qing-Yu, Wei Xian-Yong, Hou Zhe, Cai Zun-Sheng, Zhao Xue-Zhuang   

  1. Department of Energy Utilization and Chemical Engineering,China University of Mining and Technology,Xuzhou 221008|Deparment of Chemistry,Nankai University,Tianjin 300071
  • Received:1998-05-19 Revised:1998-08-19 Published:1999-04-15
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关键词: 硫(-II)化合物, 非线性动力学, 自催化

Abstract:

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.

Key words: Sulfur(-II)compound, Nonlinear dynamics, Autocatalysis