High-Pressure Phase Equilibria in Systems Containing CO2 and Ionic Liquids

0370895 - ÚCHP 2012 HR eng C - Conference Paper (international conference)
Sedláková, Zuzana - Wagner, Zdeněk - Aim, Karel
High-Pressure Phase Equilibria in Systems Containing CO2 and Ionic Liquids.
Katalog. Catalogue: Zagreb Inventors Association, 2011, s. 131.
[International Invention Show (gold medal awarded) /36./. Zagreb (HR), 09.11.2011-12.11.2011]
R&D Projects: GA ČR GP203/09/P141; GA AV ČR IAA400720710
Institutional research plan: CEZ:AV0Z40720504
Keywords : high pressure * ionic liquid * carbon dioxide
Subject RIV: CF - Physical ; Theoretical Chemistry

Vapour-liquid equilibrium data for such systems are scarce and, moreover, there are significant discrepancies between the literature data from different sources. We have measured high-pressure solubility in the system CO2 + [emim][Tf2N] at pressures up to 15 MPa at four isotherms 303, 313, 323, and 333 K. The binary sub-systems (CO2 + 1-butanol) and (CO2 + [emim][Tf2N]) were studied at the same temperatures and at pressures up to 12 MPa. A synthetic method using the Super Phase Monitor 20 apparatus was applied. The central part of the instrument is a variable-volume view-cell charged with known amounts of ionic liquid and CO2. By using a video camera, the bubble point is detected by observing the disappearance of the last bubble of the lighter phase during the controlled increase of pressure.
Permanent Link: http://hdl.handle.net/11104/0204570