Abstract:

The phase equilibrium curve and partition coefficients in the recovery of catechol from o-methallyloxyphenol etherification product at 25℃ was studied through extraction of catechol with different concentrations.The extractant was distilled water and 0.5% sodium carbonate solution.Meanwhile, because xylene has good mutual solubility with o-methallyloxyphenol and insolubility in water, it can be used for auxiliary extraction, and this is a good method for improving the partition coefficient.In addition, after multilevel cross-flow extraction of the etherification product, the extraction yield reached above 90.2%，and the chosen extractants were efficient and practicable.