Phosphonium and ammonium ionic liquids with aromatic anions: Synthesis, properties, and platinum extraction
- Author(s)
- Anja Stojanovic, Daniel Kogelnig, Lisa Fischer, Stephan Hann, Mathea Sophia Galanski, Michael Groessl, Regina Krachler, Bernhard Keppler
- Abstract
Several hydrophobic long-chain quaternary ammonium and phosphonium ionic liquids (ILs) with functionalized aromatic anions were prepared following a metathesis route using tricaprylmethylammonium chloride (Aliquat 336) and trihexyl(tetradecyl)phosphonium chloride (Cyphos IL101) as precursors. The incorporation of aromatic anions bearing hydroxy-, methoxy-, thiol-, and thioether functionalities as well as tetraphenylborate anions resulted in an increased chemical stability of the ILs and an alteration of their physico-chemical properties. Furthermore, aromatic anions significantly decreased the water solubility and water uptake of both ammonium and phosphonium-based ILs. Thiol- and thioether ILs were applied for the extraction of platinum from aqueous phase using liquid phase micro-extraction. Time dependent studies showed a rapid elimination of up to 95% platinum after 30 min. With a leaching of the anion
- Organisation(s)
- Department of Inorganic Chemistry
- External organisation(s)
- University of Natural Resources and Life Sciences, École polytechnique fédérale de Lausanne
- Journal
- Australian Journal of Chemistry: an international journal for chemical science
- Volume
- 63
- Pages
- 511-524
- No. of pages
- 14
- ISSN
- 0004-9425
- DOI
- https://doi.org/10.1071/CH09340
- Publication date
- 2010
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 104003 Inorganic chemistry
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/80d774e7-19f7-45a3-a5d9-26077214577d