화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.48, No.6, 2781-2785, 2009
High-Temperature Conductivity Measurements of Concentrated NaCl-H2SO4-H2O Solutions up to 250 degrees C
An electrodeless conductivity cell was employed to investigate the electrical conductivity of concentrated NaCl-H2SO4-H2O solutions particularly at high temperatures. All solutions were measured from 25 to 250 degrees C at the equilibrium vapor pressures. The maximum measured concentrations of NaCl and H2SO4 were 0.40 and 0.45 m, respectively. At 250 degrees C and a fixed concentration of H2SO4, the conductivity of NaCl-H2SO4-H2O solutions increases with the increasing concentration of NaCl. Similarly, at 250 degrees C and a fixed concentration of NaCl, the conductivity of NaCl-H2SO4-H2O solutions increases with the increasing concentration of H2SO4. It was found that the ionic equivalent conductivity of H3O+ is a function of ionic strength at 250 degrees C and is independent of the solution speciation.