Article
  • The Properties Computation of Ion Exchanger Using the Potentiometric Titration
  • Kim TI, Hwang TS, Son WK, Choi DM, Oh IS, Soldatov BC
  • 전위차 적정법을 이용한 이온교환수지의 특성 계산
  • 김태일, 황택성, 손원근, 최돈묵, 오인석, Soldatov BC
Abstract
This was studied on a method for computation of the main characteristics having an effect on potentiometric titration curve in ion exchanger/solution system. These characteristics are the acidity parameters of ion exchangers such as thermodynamic constant(pK°, apparent equilibrium constant and correction for the apparent equilibrium constant(ba0. For proving the theory, we carried out an experiment on potentiometric titration by using the carboxylic cation exchangers of granular and fibrous type and obtained potentiometric titration curves at different concentrations of the supporting electrolyte. AS a result, we obtained a characteristic equation related with the acidity parameters of ion exchangers systems. The characteristics such as solution pH, supporting electrolyte concentration(C) and degree of neutralization of ion exchanger(x) could simply calculated based on this equation.

이온교환수지/용액 계에서 이온교환수지의 산성 매개변수인 열역학상수 ÞK0, 외형평형상수 및 외형평형상수의 보정값 (b) 등 전위차 적정곡선에 영햐을 주는 주된 특성들의 계산 방법을 연구하였다. 이론 식을 검증하기 위해 구형과 섬유형의 카르복실형 양이온교환수지를 이용하여지지 전해질의 농도에 따라 실험을 행한 후 전위차 적정곡선을 구하였고, 이들의 결과로부터 이온교환수지계의 산성도 매개변수와 관련된 특성식을 얻었으며, 용액의 pH,지지 전해질의 농도 (C) 및 이온교환수지의 중화도 (χ)를 간편하게 구할 수 있다.

Keywords: ion exchage; carboxylic ion exchanger; potentiometric titration; equilibrium constant

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1999; 23(5): 747-754

    Published online Sep 25, 1999

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

Correspondence to

  • E-mail: