Delayed Response of Interfacial Tension in Propagating Chemical Waves of the Belousov鈥揨habotinsky Reaction without Stirring

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• 作者：Ryo Tanaka ; Tomonori Nomoto ; Taro Toyota ; Hiroyuki Kitahata ; Masanori Fujinami
• 刊名：Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：November 7, 2013
• 年：2013
• 卷：117
• 期：44
• 页码：13893-13898
• 全文大小：307K
• 年卷期：v.117,no.44(November 7, 2013)
• ISSN：1520-5207

文摘

Time-resolved measurements of the interfacial tension of propagating chemical waves of the Belousov鈥揨habotinsky reaction based on the iron complex catalysts were carried out without stirring by monitoring the frequency of capillary waves with the quasi-elastic laser scattering method. A delayed response of the interfacial tension with respect to absorption was found with the delay being ligand-dependent when the reaction was conducted at a liquid/liquid interface. This behavior is attributed to differences in adsorption activity of the hydrophobic metal catalyst. The delay time and the increase in interfacial tension were also reproduced by a model considering the rate constants of equilibrium adsorption.