Journal of Membrane Science & Technology

Graduate School of Science, Chiba University, Chiba 263-8522, Japan

Biography

Dr. Yoshihiro Kudo has received his PhD in Hokkaido University during the period of 1981 to 1986. Currently, he is working as an associate professor of chemistry in Chiba University. His research has included studies for equilibria of solvent extraction with crown compounds and distribution of single ions into various diluents, electrochemical measurements at liquid/liquid interfaces, and a potentiometric study for the determination of ion-pair formation constants of the crown ether complex ions in water.

Publications

• Research Article   
  Liquid Membrane Transports of Na(I) Ions by Crown Compounds into Dichloromethane and o-Dichlorobenzene: About Analytical Model Simplified for Potentiometric Experiments
  Author(s): Yoshihiro Kudo*, Tomohiro Goto, Saya Morioka and Chiya Numako
  
  Membrane transport experiments into Dichloromethane (DCM) and o-Dichlorobenzene (oDCBz) were performed at 298 K using basic mixtures of NaCl, picrate ion, and crown compounds (L). Here, L shows 15-crown-5 ether (15C5), benzo-15C5 (B15C5), 18-crown-6 ether (18C6), or B18C6. A used cell was (-) ref. electrode|0.05 mol/L (C4H9)4NCl|org (=DCM or oDCBz) |mixture| ref. electrode (+), where the ref. electrode is a commercial one composed of 3 mol/L NaCl|AgCl|Ag. First-order rate constants (k/minute–1) and a parameter, fΔE’, with potential differences ΔE’/V at the (C4H9)4NClaq|org interfaces and f=F/RT, were determined. The natural logarithm of the apparent distribution constant (KD’) defined before for the ion transfer into the organic phases was displaced by this parame.. View more»
  

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