Solubility of gases in butanols IV. Solubilities of nonpolar gases in 2-methyl-2-propanol at 303.15 K and 101.33 kPa partial pressure of gas

Solubilities of 15 nonpolar gases (He, Ne, Ar, Kr, Xe, H-2, D-2, N-2, O-2, CH4, C2H4, C2H6, CF4, SF6, and CO,) in 2-methyl-2-propanol (tert-butanol) h ave been measured at the temperature 303.15 K and 101.33 kPa partial pressu re of gas. Standard changes of the Gibbs energy of solution have been also determined from experimental data. The Lennard-Jones 6,12 pair potential pa rameters have been estimated for that solvent using the Scaled Particle The ory (SPT) and these parameters have been compared with those corresponding to the other isomers of butanol. It can be concluded that the derived energ y parameters provide a measurement of the association of the alkanol. A ver sion of the UNIFAC model has been applied and the corresponding interaction parameters for alkanes and alkanols have been determined. (C) 1999 Elsevie r Science B.V. All rights reserved.