Thermodynamic Studies on Styrene Butadiene Phenolformaldehyde Cation Exchange Resin

A.S. Aboul-Magd* and F.H. Kamal
Department of Chemistry, Faculty of Science, Al-Azhar University Nasr City, Cairo, Egypt  

Equilibrium coefficients have been studied for the exchanges of

Cu(II)/H(I), Co(II)/H(I) and Ni(II)/H(I) systems on strongly cation


exchanger styrene butadiene phenolformaldehyde(SBPF) in aqueous and


aqueous-acetone media. The ionic strength of the solution was 0.1M,


and the exchanges was studied as a function of resin compositions. All


these coefficients increase with increasing organic solvent in the solution


phase. Applying a statistical thermodynamic model, the thermodynamic


equilibrium constants have been determined at three temperature range


between 25 and 55ºC. The standard free energies ΔGº, enthalpies ΔHº


and entropies ΔSº, drived from the data are presented.


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  • Asian J. Chem. /
  •  1990 /
  •  2(2) /
  •  pp 191-199