Crystallization of an organic compound from an ionic liquid using carbon dioxide as anti-solvent

Maaike C. Kroon, Vincent A. Toussaint, Alireza Shariati, Louw J. Florusse, Jaap van Spronsen, Geert-Jan Witkamp, Cor J. Peters*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

In this paper the anti-solvency behavior of supercritical carbon dioxide (CO2) as a way to recover an organic compound from an ionic liquid by crystallization is explored. As an example, the conditions for crystallization of the organic compound methyl-(Z)-α-acetamido cinnamate (MAAC) from the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim+][BF4]) using supercritical CO2 as anti-solvent are studied experimentally by measuring the phase behavior of the ternary system [bmim+][BF4] + CO2 + MAAC. MAAC can be recovered from [bmim+][BF4] by either using a shift to higher CO2 concentrations at constant temperature (anti-solvent crystallization) or by using a shift to lower temperatures at constant CO2 concentration (thermal shift).

Original languageEnglish (US)
Pages (from-to)333
Number of pages1
JournalGreen Chemistry
Volume10
Issue number3
DOIs
StatePublished - Mar 1 2008

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

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