Isothermal vapor liquid equilibrium for binary 2-methylpropene plus methanol to butanol systems

Vapor-liquid equilibria measured with a static apparatus are reported for binary mixtures of 2-methylpropene and the following C1-C4 alcohols at the corresponding temperatures: methanol (323.15 K), ethanol (323.15 K), 2-propanol (323.1-5 K), 2-butanol (323.15 K), and 2-methyl-2-propanol (313.15 K and 322.77 K). Measured pTz (pressure-temperature-total composition) data were reduced to liquid- and vapor-phase compositions using Barker's method. Binary interaction parameters were optimized for the Legendre polynomial, Wilson, UNIQUAC, and nonrandom two-liquid methods. An error analysis for all measured results was performed. All systems indicated a positive deviation from Raoult's law. Azeotropic behavior was observed for 2-methyl propene + methanol binary.