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

Chem Commun (Camb). 2015 Aug 14;51(63):12649-52. doi: 10.1039/c5cc03519h.

Abstract

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.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Carbon Dioxide / chemistry*
  • Cellulose / chemistry*
  • Hydrogen Bonding
  • Ionic Liquids / chemistry*
  • Magnetic Resonance Spectroscopy
  • Pressure

Substances

  • Ionic Liquids
  • Carbon Dioxide
  • Cellulose