Phase Equilibria in the Systems Ethyl 1,1-Dimethylethyl Ether + Methylcyclohexaen, 2,2,4-Trimethylpentane + Methylcyclohexane, and Ethyl 1,1-Dimethylethyl Ether + 2,2,4-Trimethylpentane + Methylcyclohexane at 94.00 kPa

摘要

Consistent vapor-liquid equilibria (VLE) at 94.00 kPa has been determined for the ternary system ethyl 1,1-dimethylethyl ether + 2,2,4-trimethylpentane + methylcyclohexane and the two constituent binaries ethyl 1,1-dimethylethyl ether + methylcyclohexane and 2,2,4-trimethylpentane + methylcyclohexane in the temeprature range from 343 to 371 K. In addition, vapor pressures have been measured for methylcyclohexane from 331 to 374 K. According to the experimental results, the systems exhibit slight positive deviatins from ideal behavior and no azeotroe is present. The VLE data have been correlated with the composition using the Redlich-Kister, Wilson, NRTL, UNIQUAC, and Wisniak-Tamir relations. These models, in addition to UNIFAC, allow good prediction of the VLE properties of the ternary system from those of the pertinent binary systems.