Liquid – vapour equilibrium of { x BF 3 + ( 1 − x ) n - butane } at 195 . 49
نویسندگان
چکیده
The saturation vapour pressure of {x BF3 + (1−x)n-C4H10} has been measured at 195.49 K. The system shows large positive deviations from Raoult’s law and liquid–liquid immiscibility over a wide composition range whose limits have been estimated as 0.39±0.03 < x > 0.9785. The excess molar Gibbs energies (Gm) have been calculated as a function of composition from the vapour pressure data. For the hypothetical equimolar mixture Gm (x = 0.5) = (703.9 ± 29) J mol−1. The results were interpreted using the statistical associating fluid theory for potentials of variable range (SAFT-VR), as well as compared with those of related systems, such as (BF3 + n-pentane) and (BF3 + xenon). © 2002 Elsevier Science B.V. All rights reserved.
منابع مشابه
A Molecular-Based Equation of State for Vapour-liquid Equilibrium of Pure Substances
A semi-empirical equation of state has been studied for modelling vapour-liquid data of pure substances. The specific molecular based equation of state is employed here as basis because of its mathematical simplicity. The semi-empirical extension has been accomplished to real fluids by correlating the density dependence of the attraction term to vapour liquid data of a reference fluid. The resu...
متن کاملPreparation and solid-state characterization of mixed-ligand coordination/organometallic oligomers and polymers of copper(I) and silver(I) using diphosphine and mono- and diisocyanide ligands.
The dimers [Cu(2)(dppm)(2)(CN-t-Bu)(3)](BF(4))(2) and [Ag(2)(dppm)(2)(CN-t-Bu)(2)](X)(2) (X(-) = BF(4)(-), ClO(4)(-)) and the coordination polymers [[M(diphos)(CN-t-Bu)(2)]BF(4)](n) (M = Cu, Ag; diphos = bis(diphenylphosphino)butane (dppb), bis(diphenylphosphino)pentane (dpppen), bis(diphenylphosphino)hexane (dpph)), [[Ag(2)(dppb)(3)(CN-t-Bu)(2)](BF(4))(2)](n), and [[Ag(dpppen)(CN-t-Bu)]BF(4)](...
متن کاملOptimization of the preparation procedure of Ni/Al2O3 catalyst for steam reforming of n-butane
Performance of Ni/Al2O3 catalysts (10 wt.% Ni) in steam reforming of n-butane was investigated in terms of n-butane conversion, selectivity to hydrogen and hydrogen yield. The process was carried out in a fixed-bed tubular reactor at 650 °C and atmospheric pressure. The volumetric flow rates of n-butane and steam were 0.1 mL/min and 0.6 mL/min, respectively. The catalysts were prepared by preci...
متن کاملVapour liquid equilibrium measurements with three methods: static total pressure, circulation still and inert gas stripping
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Piia Haimi Name of the doctoral dissertation Vapour liquid equilibrium measurements with three methods: static total pressure, circulation still and inert gas stripping Publisher School of Chemical Technology Unit Department of Biotechnology and Chemical Technology Series Aalto University publication series DOCTORAL DISSERTATI...
متن کاملOne Pile Nim with Arbitrary Move Function
This paper solves a class of combinatorial games consisting of one-pile counter pickup games for which the maximum number of counters that can be removed on each successive move equals f(t), where t is the previous move size and f is an arbitrary function. The purpose of this paper is to solve a class of combinatorial games consisting of one-pile counter pickup games for which the maximum numbe...
متن کامل