Issue 3, 2008
From the journal:

Green Chemistry

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

Maaike C. Kroon,ab   Vincent A. Toussaint,a   Alireza Shariati,c   Louw J. Florusse,a   Jaap van Spronsen,b   Geert-Jan Witkampb  and  Cor J. Peters*a  

* Corresponding authors

a Section of Physical Chemistry and Molecular Thermodynamics, Department of Chemical Technology, Faculty of Applied Sciences, Delft University of Technology, Julianalaan 136, Delft, The Netherlands
E-mail: C.J.Peters@tudelft.nl
Fax: +31 15-2784289
Tel: +31 15-2782660

b Section of Process Equipment, Department of Process & Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, CA, Delft, The Netherlands

c Petroleum and Chemical Engineering Department, Shiraz University, Shiraz, Iran

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).

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

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Article information

DOI
https://doi.org/10.1039/B712848G
Article type
Paper
Submitted
21 Aug 2007
Accepted
08 Jan 2008
First published
07 Feb 2008

Green Chem., 2008,10, 333-336

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

M. C. Kroon, V. A. Toussaint, A. Shariati, L. J. Florusse, J. van Spronsen, G. Witkamp and C. J. Peters, Green Chem., 2008, 10, 333 DOI: 10.1039/B712848G

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