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Citation: Tang Yu-Hong, Liu Quan-Liang, Hou Yin-Lan. Studies on the Oscillation of p-H₂NC₆H₄COOH-KBrO₃-H₂SO₄ System[J]. Acta Physico-Chimica Sinica, ;1994, 10(11): 1031-1034. doi: 10.3866/PKU.WHXB19941113 shu

Studies on the Oscillation of p-H₂NC₆H₄COOH-KBrO₃-H₂SO₄ System

1.
Graduate School of University of Science and Technology of China,Beijing 100039

Received Date: 12 July 1993
Available Online: 15 November 1994

The oscillations of P-H2NC6H4COOH-KBrO3- H2SO4 system are studied. The dual-frequency oscillations are found in this system. Furthermore, the influences of initial reaction conditions (concentrations of reactants and temperature) metal-ion catalysts and several additives on oscillating behaviors are concluded. These experimental phenomena suggested that the dual-frequency oscillations are controlled by two types of mechanism, one is bromide-ion controlling to the lower frequency oscillations, the other is non-brominde ion controlling to the higher ones, in which the substrate radicals play an important role. Moreover, these mechanisms are competing in the reaction system when the situation is fit for each one. Some interpretations about this are approached from the analysis of the composion of substrates and the viriation of potential during the reaction.
- BZ reaction,
- Dual-frequency oscillation,
- Bromide-ion controlling,
- Nonbromide-ion controlling
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Studies on the Oscillation of p-H2NC6H4COOH-KBrO3-H2SO4 System

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Studies on the Oscillation of p-H₂NC₆H₄COOH-KBrO₃-H₂SO₄ System