Reversible and non-reactive cellulose separations from ionic liquid mixtures with compressed carbon dioxide

A novel physical (non-reactive) separation of cellulose from an ionic liquid (IL)/cosolvent mixture by compressed carbon dioxide is presented. The precipitation is completely reversible and rapid within small changes of pressure i.e. liquid phase CO2 composition. High pressure phase equilibrium, hig...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2015-08, Vol.51 (63), p.12649-12652
Main Authors: Minnick, David L, Scurto, Aaron M
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbon Dioxide - chemistry
Cellulose
Cellulose - chemistry
Compressed
Hydrogen Bonding
Ionic liquids
Ionic Liquids - chemistry
Magnetic Resonance Spectroscopy
Nuclear magnetic resonance
Phase transformations
Precipitation
Pressure
Separation
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Summary:A novel physical (non-reactive) separation of cellulose from an ionic liquid (IL)/cosolvent mixture by compressed carbon dioxide is presented. The precipitation is completely reversible and rapid within small changes of pressure i.e. liquid phase CO2 composition. High pressure phase equilibrium, high pressure NMR, and solid state NMR have been utilized to understand the separation phenomena.
ISSN:1359-7345
1364-548X
DOI:10.1039/c5cc03519h