Isobaric phase equilibria in the binary systems ethyl 1,1-dimethylethyl ether+1-hexene and plus cyclohexene at 94.00 kPa

Consistent vapor-liquid equilibrium has been determined for the binary syst ems 1-hexene+ethyl 1,1-dimethylethyl ether (ETBE) and ethyl 1,1-dimethyleth yl ether + cyclohexene at 94.00 kPa. The two systems present slight positiv e deviations from ideal behavior, can be considered to behave like regular solutions and do not present azeotropic behavior. Pure component vapor pres sures are also reported for 1-hexene and cyclohexene. The phase equilibrium of the systems was correlated well by the Wilson, UNIQUAC, and NRTL models and reasonably predicted by the UNIFAC group contribution method. The boil ing points of the binary systems were correlated with the Wisniak-Tamir equ ation.