高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (4): 613.

• 论文 • 上一篇    下一篇

KIO3-KSCN-H+反应体系的非线性动力学研究

林娟娟, 庄招弟, 周世建   

  1. 温州师范学院化学系, 温州 325003
  • 收稿日期:1999-05-10 出版日期:2000-04-24 发布日期:2000-04-24
  • 通讯作者: 林娟娟(1960年出生),女,副教授,从事非线性化学反应动力学研究.E-mail:lijj@mail.wzptt.zj.cn E-mail:lijj@mail.wzptt.zj.cn
  • 基金资助:

    浙江省教育委员会自然科学基金(批准号:981202)

Studies on Nonlinear Kinetics for KIO3-KSCN-H+ Reaction System

LIN Juan-Juan, ZHUANG Zhao-Di, ZHOU Shi-Jian   

  1. Department of Chemistry, Wenzhou Teachers College, Wenzhou 325003, China
  • Received:1999-05-10 Online:2000-04-24 Published:2000-04-24

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摘要： 研究了KIO3-KSCN-H+反应体系在连续搅拌流动反应器(CSTR)中的非线性动力学行为.在CSTR中,该反应体系的Pt电极电位显示出持续振荡现象,振荡的浓度范围非常宽.通过酸度及各种金属离子对体系振荡行为影响的研究发现,对振荡体系具有催化作用的可能物种是H+离子而不是金属离子.

关键词: 非线性化学反应, 化学振荡, 碘酸盐, 硫氰酸盐

Abstract: The nonlinear dynamical behavior for the reaction between iodate and thiocyanate in acidic medium(H2SO4) has been studied in a flow reactor (CSTR). In the CSTR, the reaction system displays a sustained oscillation in the potentials of Pt electrode. The oscillatory region is very wide in concentrations. The influences of acidity and metal ions on the present oscillations were studied. The results showed that it is possible for the hydronium but not the metal ion to serve as the catalytic species during the oscillations.

Key words: Nonlinear chemical reaction kinetics, Chemical oscillation, Iodate, Thiocyanate

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