Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 33, Issue 5, Pages 821-826Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.200900555
Keywords
Crystallization; Distribution coefficient; Ionic liquids; Zone melting
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Funding
- German Federal Ministry of Education and Research (BMBF) [01RI05208]
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The first experimental results concerning the differential distribution coefficient, k(diff), for crystallization of 1-ethyl-3-methyl imidazolium chloride (EMIMCl) out of EMIMCl- methylimidazole (MIM) mixtures (5 wt% MIM) are presented. The mixture was purified using the zone melting technique at a fixed crystallization rate of 1.44mm/h. For quantification of the MIM content after purification an analytical method consisting of the combination of ion chromatography and UV/Vis detection was developed. A distribution coefficient of k(diff)=0.2 was found.
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