Studies on the Kinetic Feature of Orbán Oscillation System from the Role of Cupric Ion

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (6): 1025.

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Studies on the Kinetic Feature of Orbán Oscillation System from the Role of Cupric Ion

GAO Qing-Yu¹, SUN Kang¹, LI Lan-Ping¹, CAI Zun-Sheng², ZHAO Xue-Zhuang²

1. Collegeof Chemical Engineering, China University of Miningand Technology, Xuzhou 221008, China;
2. Departmentof Chemistry, Nankai University, Tianjin 300071, China

Received:2000-05-11 Online:2001-06-24 Published:2001-06-24

Abstract

Abstract: In the H₂O₂-KSCN-CuSO₄-NaOHreaction system, cupric ion plays an essential role for batch and CSTRoscillation. Since Cu ²⁺(or Cu⁺) can be precipitated as CuOH, CuSCNand Cu(OH)₂, its concentration has a complex influence on the amplitude and initial high flowrate of oscillation. The pHdrop resulted from the oxidation of KSCNby hydrogen peroxide inhibited the oscillation. The kinetic nature of oscillation should be the H₂O₂ decomposition catalyzed by cupric and thiocyanate.

Key words: Cupric ion, pH, Nonlinear reaction

CLC Number:

O643.1

TrendMD:

GAO Qing-Yu, SUN Kang, LI Lan-Ping, CAI Zun-Sheng, ZHAO Xue-Zhuang . Studies on the Kinetic Feature of Orbán Oscillation System from the Role of Cupric Ion[J]. Chem. J. Chinese Universities, 2001, 22(6): 1025.

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Studies on the Kinetic Feature of Orbán Oscillation System from the Role of Cupric Ion

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