Selection and design of ionic liquids as solvents in extractive distillation and extraction processes
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Boelo Schuur
Abstract
Since the late 1990’s there has been a tremendous growth in literature on ionic liquids (ILs) for a broad range of applications, i.e. catalysis, electrolytes for batteries, in solvolysis of biomass, and also in separation technology. ILs can be applied as solvents for absorption (e.g. of CO2), extractive distillation and extraction processes. That ILs are not magic solvents but have their limitations has also become evident during the past years. Especially the high costs associated with ILs and the lack of experience with these materials in the industrial practice are factors limiting industrial adoption of ILs. The often praised versatility of properties that can be achieved through combination of different cations and anions generates a huge amount of options and makes it difficult to decide where to start when selecting/designing a solvent. This paper focuses on solvent selection/design for applications in extractive distillations and liquid-liquid extractions; also, solvent performance in several specific case studies taken from the open literature is discussed. Important recommendations include: a) make a conceptual process design including the recovery step, regeneration of the IL may be a critical parameter; b) if extractions from aqueous streams are studied, the uptake of water by the IL is an important factor because such co-extracted water is evaporated during the regeneration; c) compare the process with conventional processes to check whether it performs better than the state-of-the-art in industry.
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© 2015 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Selection and design of ionic liquids as solvents in extractive distillation and extraction processes
- Analytical procedure for steroid profiling valid for Athlete Biological Passport
- Fabrication of paper-based analytical device by silanisation of filter cellulose using alkyltrimethoxysilane coupled with UV radiation
- Synthesis, characterisation and photocatalytic activity of Ag+- and Sn2+-substituted KSbTeO6
- Dysprosium pertraction through facilitated supported liquid membrane using D2EHPA as carrier
- Volatile compounds composition and antioxidant activity of bee pollen collected in Lithuania
- Self-penetrating and interpenetrating 3D metal–organic frameworks constructed from 4-(4-carboxyphenoxy)-phthalic acid and N-donor auxiliary ligands
- Preparation of ceramic γ-Al2O3–TiO2 nanofiltration membranes for desalination
- Promoting effect of group VI metals on Ni/MgO for catalytic growth of carbon nanotubes by ethylene chemical vapour deposition
- Microwave-assisted solvent-free synthesis and luminescence properties of 2-substituted-4,5-di(2-furyl)-1H-imidazoles
- Synthesis of potential inhibitors of glycosyltransferases representing UDP-GlcNAc
- Development of transition state analogue inhibitors for N-acetylglycosyltransferases bearing D-psicoor D-tagatofuranose scaffolds
- Efavirenz–eudragit E-100 nanoparticle-loaded aerosol foam for sustained release: in-vitro and ex-vivo evaluation
- Photochromic and molecular switching behaviour of Schiff base-containing pyrazolone ring
- Improvements to CO2 headspace biodegradability test
- Synthesis of corn rootworm pheromones from commercial diols
