Journal ArticleDOI
Determination of Halide Impurities in Ionic Liquids by Total Reflection X-ray Fluorescence Spectrometry
TLDR
A new method based on an alkaline copper standard Cu(NH3)4(NO3)2 is presented for the determination of chloride, bromide, and iodide impurities in ionic liquids and it is shown that the detection of halide ions in solution by total reflection X-ray fluorescence (TXRF) has been problematic.Abstract:
The determination and quantification of halide impurities in ionic liquids is highly important because halide ions can significantly influence the chemical and physical properties of ionic liquids. The use of impure ionic liquids in fundamental studies on solvent extraction or catalytic reactions can lead to incorrect experimental data. The detection of halide ions in solution by total reflection X-ray fluorescence (TXRF) has been problematic because volatile hydrogen halide (HX) compounds are formed when the sample is mixed with the acidic metal standard solution. The loss of HX during the drying step of the sample preparation procedure gives imprecise and inaccurate results. A new method based on an alkaline copper standard Cu(NH3)4(NO3)2 is presented for the determination of chloride, bromide, and iodide impurities in ionic liquids. The 1-butyl-3-methylimidazolium ([C4mim]) ionic liquids with the anions acetate ([C4mim][OAc]), nitrate ([C4mim][NO3]), trifluoromethanesulfonate ([C4mim][OTf]), and bis(tr...read more
Citations
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Journal ArticleDOI
Rare-earth recycling using a functionalized ionic liquid for the selective dissolution and revalorization of Y2O3:Eu3+ from lamp phosphor waste
David Dupont,Koen Binnemans +1 more
TL;DR: In this paper, a new recycling process for lamp phosphor waste is proposed based on the use of the functionalized ionic liquid betainium bis(trifluoromethylsulfonyl)imide, [Hbet][Tf2N].
Journal ArticleDOI
Extraction and separation of neodymium and dysprosium from used NdFeB magnets: an application of ionic liquids in solvent extraction towards the recycling of magnets
Sofía Riaño,Koen Binnemans +1 more
TL;DR: In this paper, a procedure for the efficient extraction and separation of rare earths and other valuable elements from used NdFeB permanent magnets is presented, where an iron free leachate is prepared from an used magnet using nitric acid.
Journal ArticleDOI
Recovery of Scandium(III) from Aqueous Solutions by Solvent Extraction with the Functionalized Ionic Liquid Betainium Bis(trifluoromethylsulfonyl)imide
Bieke Onghena,Koen Binnemans +1 more
TL;DR: In this article, the ionic liquid betainium bis(trifluoromethylsulfonyl)imide [Hbet][Tf2N] was used for the extraction of scandium from aqueous solutions.
Recovery of Scandium(III) from Aqueous Solutions by Solvent Extraction with the Functionalized Ionic Liquid Betainium
Bieke Onghena,Koen Binnemans +1 more
TL;DR: In this paper, the ionic liquid betainium bis(trifluoromethylsulfonyl)imide (Hbet)(Tf2N) was used for the extraction of scandium from aqueous solutions.
Journal ArticleDOI
2016 Atomic Spectrometry Update – a review of advances in X-ray fluorescence spectrometry and its applications
TL;DR: A review of advances in the XRF group of techniques published approximately between April 2015 and March 2016 can be found in this paper, where a bench top TXRF spectrometer for the measurement of the elements from carbon to uranium is described that offers achievable detection limits that range from ng g−1 to μg g −1.
References
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Journal ArticleDOI
Ionic Liquids-New "Solutions" for Transition Metal Catalysis.
Peter Wasserscheid,Wilhelm Keim +1 more
TL;DR: There are indications that switching from a normal organic solvent to an ionic liquid can lead to novel and unusual chemical reactivity, which opens up a wide field for future investigations into this new class of solvents in catalytic applications.
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Dissolution of Cellose with Ionic Liquids
TL;DR: In this paper, the authors demonstrate that cellulose can be dissolved without activation or pretreatment in, and regenerated from, 1-butyl-3-methylimidazolium chloride and other hydrophilic ionic liquids.
Journal ArticleDOI
Ionic-liquid materials for the electrochemical challenges of the future.
TL;DR: The goal in this review is to survey the recent key developments and issues within ionic-liquid research in these areas, and to generate interest in the wider community and encourage others to make use of ionic liquids in tackling scientific challenges.