高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (9): 1432.

• 论文 • 上一篇    下一篇

CuSO4-KSCN-H2O2-NaOH反应体系双节律的周期调制

魏庆莉, 陈兰, 吴奇林, 蔡遵生, 赵学庄   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:1999-06-30 出版日期:2000-09-24 发布日期:2000-09-24
  • 通讯作者: 赵学庄(1934年出生),男,教授,博士生导师,从事量子化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29573109)资助

State-transition in the Chemical Birhymicity of CuSO4-H2O2-KSCN-NaOH Reaction System by Modulating Flowrate

WEI Qing-Li, CHEN Lan, WU Qi-Lin, CAI Zun-Sheng, ZHAO Xue-Zhuang    

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:1999-06-30 Online:2000-09-24 Published:2000-09-24

摘要: 研究了CuSO4-KSCN-H2O2-NaOH反应体系,新发现了两种双节律现象.继而以流速作为扰动参数,对双节律中两个不同振荡态的不同流速点进行了周期调制,发现在临界区(接近实现OSS1→OSS2或OSS2→OSS1的流速点)只能实现单向跃迁;在OSS1态的kf0=4.0mL/min和OSS2态的kf0=3.0mL/min,能实现在两振荡态间的双向跃迁,而且OSS2态比OSS1态稳定.

关键词: 振荡, CSTR, 双节律, 周期调制, 跃迁

Abstract: Two types of birhymicity(Ⅰ, Ⅱ) of CuSO4-H2O2-KSCN-NaOHreaction system are found to be in continuous flow stirred tank reactor(CSTR). The transitions between two oscillatory states in the birhymicity Ⅱ region of the present chemical reaction have been induced by the application of a sinusoidal flowrate signal. One-way transition, i.e., from one oscillation to another oscillation(OSS1→OSS2 or OSS2→OSS1), only occurs in the two critical regions of birhymicity Ⅱ. The switching between OSS1 and OSS2 can be observed at kf0=4.0 mL/min in OSS1 and kf0=3.0 mL/min in OSS2 by certain periodical modulation.

Key words: Oscillation, CSTR, Birhymicity, Sinusoidal perturbation, Transition

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