Isothermal vapor-liquid equilibrium and excess enthalpy data for the binary systems methyl tert-butyl ether plus cyclohexane and ethyl tert-butyl ether plus cyclohexane, n-hexane, and n-heptane in a temperature range from 298.15 to 393.15 K

Isothermal vapor-liquid equilibrium (VLE) and excess enthalpy (H-E) data ar e reported for binary systems containing branched ethers and hydrocarbons., The vapor-liquid equilibrium data for methyl tert-butyl ether (MTBE) + cyc lohexane at 308.15 K, for ethyl tert-butyl ether (ETBE) + cyclohexane, n-he xane + ethyl tert-butyl ether, and ethyl tert-butyl ether + n-heptane from 298.15 to 363.15 K were measured by means of a computer-controlled static a pparatus. An isothermal flow calorimeter was used to obtain excess enthalpy data for the systems containing ethyl tert-butyl ether at 313.15 and 393.1 5 K. The experimental VLE and H-E data were compared with the data of other authors and have been used simultaneously for the correlation of temperatu re-dependent UNIQUAC parameters.