STUDIES ON EXTRACTION OF ACETIC-ACID WITH TBP IN VARIOUS DILUENTS

The extraction of acetic acid with TBP in different diluents was studi ed, The decreasing order of extraction ability of TBP is as follows: t oluene, benzene, cyclohexane, kerosene, tetrachloride, chloroform and methyl isobutylketone, The effect of temperature on the extraction equ ilibrium was also investigated and the enthalpy of the extraction was obtained, The relationship between the extraction equilibrium constant s K-ex, and the physical parameters of diluents can be derived, The ex traction mechanism and equilibrium were examined by measurements of IR spectrophotometry.