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No.68 (1999/11) >

 
Title :Thermodynamic Study of the Reaction between N-Methylphenothiazine and Iron(3) Ion in SDS-Hexanol Mixed Micellar Solutions
Authors :Kinjo, Akio
Sakugawa, Choken
Nakamura Nunez, Irma
Uchihara, Toshio
Authors alternative :宇地原, 敏夫
Issue Date :Nov-1999
Abstract :N-methylphenothiazine reacts with Fe(3) ion and reaches equilibrium in the anionic SDS micellar solution as reported by Minero et al. However, the reaction did not take place in the cationic DTAB, non-ionic Brij 35 micellar and waterethanol (1:1) solutions. In order to obtain more information about the effect of surface negative charge of micelle on the reaction, thermodynamic study of the reaction was carried out in SDS-hexanol mixed micellar solutions. The equilibrium constant decreases with increasing the concentration of hexanol in the mixed micellar solutions. Both free energy and enthalpy changes of the reaction shift in the positive direction with increasing the concentration of hexanol, reflecting the fact that the reaction becomes more difficult with increasing the concentration of hexanol. The entropy change seems independent of the concentration of hexnol.
Type Local :紀要論文
ISSN :0286-9640
Publisher :琉球大学理学部
URI :http://hdl.handle.net/20.500.12000/15051
Citation :琉球大学理学部紀要 = Bulletin of the College of Science. University of the Ryukyus no.68 p.23 -30
Appears in Collections:No.68 (1999/11)

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