Manipulation of the liquid-liquid equilibrium of Vertrel-XF + hydrocarbon solvent systems with the addition of a third component

Joel A. Luckman, Jason A. Berberich, Daniel C. Conrad, Barbara L. Knutson

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Phase-transition extraction (PTE) is a recently developed separation technique using partially miscible solvent systems that demonstrate temperature-dependent phase splitting behavior. This separation technique exploits the ability to shift solvent systems across their liquid-liquid coexistence curves, alternating between homogeneous and two-phase systems to achieve the desired separation. This work examines the phase behavior of fluorinated-hydrocarbon solvent systems and the ability to manipulate their critical solution temperatures (CSTs) with the addition of a third component. In addition to PTE, knowledge of the liquid-liquid equilibria (LLE) of these systems has applications to biphasic and homogeneous fluorous phase chemistry and the improved recycling and recovery of fluorous solvents. The LLE of ternary systems containing a hydrofluorocarbon, Vertrel-XF, n-decane, and either n-hexane or 1-octene were determined in the temperature range of 273-323 K. The ability to manipulate the CST of Vertrel-XF + n-hexane and Vertrel-XF + 1-octene with the addition of n-decane was examined. Experimental data were correlated using the UNIQUAC and NRTL activity coefficient models. These models were capable of representing the temperature-dependent types I and II phase behavior observed for these systems.

Original languageEnglish
Pages (from-to)2792-2797
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume41
Issue number11
DOIs
StatePublished - May 29 2002

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Manipulation of the liquid-liquid equilibrium of Vertrel-XF + hydrocarbon solvent systems with the addition of a third component'. Together they form a unique fingerprint.

Cite this