Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (06): 488-491.doi: 10.3866/PKU.WHXB19950603

• Communication • Previous Articles     Next Articles

Study of the H2O2-KSCN-CuSO4 Nonlinear Chemical System in a CSTR

Gao Qing-Yu,Lin Juan-Jun,Ma Ke-Qin,Zang Ya-Ru,Cai Zun-Sheng,Zhao Xue-Zhuang   

  1. Chemistry department,Nankai University,Tianjin 300071
  • Received:1995-03-03 Revised:1995-04-12 Published:1995-06-15
  • Contact: Zhao Xue-Zhuang


Complex periodic oscillations which are associated with Farey sequences and sustained aperiodic oscillations (maybe chemical chaos) have been first observed in Hydrogen Peroxide-Potassium Thiocyanate-Cupric Sulfate System in a CSTR. When pH is high (generally at pH>9), oscillations in pH and Pt potential in solution are synchronous, and pH increases as Pt potential in solution increases; when pH is low (gernerally pH<9),oscillations in pH and Pt potential are antiphase. Birthymicity of two oscillations appears at a same condition. A sample explanation is discussed.

Key words: Nonlinear chemical reaction, CSTR, Complex oscillations, Birhythmicity