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Determination of Distribution Coefficients in 1‐Ethyl‐3‐Methyl Imidazolium Chloride‐Methylimidazole Mixtures by Zone Melting
Author(s) -
Solà Cervera J. L.,
Keil P.,
König A.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200900555
Subject(s) - crystallization , chloride , chemistry , melting point , chromatography , ion , distribution (mathematics) , analytical chemistry (journal) , organic chemistry , mathematical analysis , mathematics
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 1.44 mm/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.