Journal of Membrane Science & Technology

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

Biography

Graduate School of Science, Chiba University, Chiba 263-8522, Japan. Chiya Numako Research work includes Membrane transport, Distribution equilibrium potentials, Dichloromethane and published many research papers in various Journals.

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»
  

  Abstract PDF