Issue 11, 2008
From the journal:

Green Chemistry

Purity specification methods for ionic liquids

Annegret Stark,*a   Peter Behrend,b   Oliver Braun,a   Anja Müller,b   Johannes Ranke,*b   Bernd Ondruschkaa  and  Bernd Jastorffb  

* Corresponding authors

a Institute for Technical Chemistry and Environmental Chemistry, Friedrich-Schiller University Jena, Lessingstr. 12, Jena, Germany
E-mail: annegret.stark@uni-jena.de
Fax: ++49 3641 948402
Tel: ++49 3641 948413

b UFT Centre of Environmental Research and Environmental Technology, University of Bremen, Leobener Strasse 1, Bremen, Germany
E-mail: jranke@uni-bremen.de
Fax: ++49 4212 1863375
Tel: ++49 4212 1863373

Abstract

In the last decade, ionic liquids have shown great promise in a plethora of applications. However, little attention has been paid to the characterisation of the purity of these fluids, which has ultimately led to non-reproducible data in the literature. In order to facilitate specification of ionic liquids, a number of analytical protocols with their limits of detection (where available) have been compiled, including methods of other authors. In particular, quantitative methods have been developed and summarised for the determination of the total ionic liquid content, residual unreacted ionic liquid starting material and by-products (amines, alkylating agents, inorganic halides), solvents from extraction procedures and water, in addition to decomposition products and total volatiles.

Graphical abstract: Purity specification methods for ionic liquids

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Article information

DOI
https://doi.org/10.1039/B808532C
Article type
Paper
Submitted
20 May 2008
Accepted
21 Jul 2008
First published
18 Sep 2008

Green Chem., 2008,10, 1152-1161

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Purity specification methods for ionic liquids

A. Stark, P. Behrend, O. Braun, A. Müller, J. Ranke, B. Ondruschka and B. Jastorff, Green Chem., 2008, 10, 1152 DOI: 10.1039/B808532C

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