title: Bubble-Point Measurements ofn-Propane +n-Decane Binary Mixtures with Comparisons of Binary Mixture Interaction Parameters for Linear Alkanes.
abstract: To develop comprehensive models for multicomponent natural gas mixtures, it is necessary to have binary interaction parameters for each of the pairs of constituent fluids that form the mixture. The determination of accurate mixture interaction parameters depends on reliably collected experimental data. In this work, we have carried out an experimental campaign to measure the bubble-point pressures of mixtures ofn-propane andn-decane, a mixture that has been thus far poorly studied with only four existing data sets. The experimental measurements of bubble-point states span a composition range (inn-propane mole fraction) from 0.269 to 0.852, and the bubble-point pressures are measured in the temperature range from 270 K to 370 K. These data, in conjunction with data from a previous publication on mixtures ofn-butane +n-octane andn-butane +n-nonane, are used to determine binary interaction parameters. The newly-obtained binary interaction parameters for the mixture ofn-propane andn-decane represent the experimental bubble-point pressures given here to within 8% (coverage factor,k=2), as opposed to previous deviations up to 19%.
authors.affiliation: Applied, Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Mansfield
authors.affiliation: Applied, Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Ian H
authors.initials: IH
authors.lastname: Bell
authors.affiliation: Applied, Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO 80305.
authors.forename: Stephanie L
authors.initials: SL
authors.lastname: Outcalt