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Phase behavior of carbon dioxide and oxygen in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

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posted on 2007-04-10, 00:00 authored by Katherine Elizabeth Wilbanks
The phase behavior of carbon dioxide and oxygen mixtures in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [hmim][Tf2N], at (40 å± 0.5) ̊C was investigated. Experiments were carried out in a fixed volume high pressure view cell with the vapor phase being sampled and analyzed using a gas chromatograph. Solubility data was determined by difference. Measurements were carried out at equilibrium pressures from 18.7 to 72.5 bar and feed compositions of 25, 35, and 50 mole percent oxygen with the balance being carbon dioxide. Noticeable enhancement was seen at pressures greater than 30 bar and was quantified by calculating enhancement factors and showing ternary diagrams. These results were compared with those of the same system at a lower temperature and carbon dioxide-expanded organic solvents.

History

Date Modified

2017-06-02

Research Director(s)

Joan F. Brennecke

Degree

  • Master of Science in Chemical Engineering

Degree Level

  • Master's Thesis

Language

  • English

Alternate Identifier

etd-04102007-144735

Publisher

University of Notre Dame

Program Name

  • Chemical Engineering

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