Triethylene glycol based deep eutectic solvents and their physical properties

Hayyan, M. and Aissaoui, T. and Hashim, M.A. and AlSaadi, M.A. and Hayyan, A. (2015) Triethylene glycol based deep eutectic solvents and their physical properties. Journal of the Taiwan Institute of Chemical Engineers, 50. pp. 24-30. ISSN 1876-1070, DOI

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Deep eutectic solvents (DESs) have been recently emerged as new ionic liquids (ILs) analogues. The low vapor pressure, inflammability, biodegradability and positive effect on the environment make DESs more favorable as neoteric solvents. In this study, triethylene glycol (TEG) was selected as a hydrogen bond donor (HBD) to form DESs with five types of phosphonium and ammonium salts, namely methyltriphenylphosphonium bromide (MTPB), benzyltriphenylphosphonium chloride (BTPC), allyltriphenylphosphonium bromide (ATPB), choline chloride (2-hydroxyethyl-trimethylammonium) (ChCl) and N,N-diethylenethanolammonium chloride (DAC). The physical properties of the synthesized DESs were measured such as freezing point, viscosity, electrical conductivity, Walden rule, density, pH and water content. In addition, the Fourier transform infrared spectroscopy (FTIR) was employed to study the functional groups. The experiments were conducted at different temperatures, i.e. 25-80 degrees C. It was found that DESs have suitable properties to be used in industrial processes such as separation, extraction, biochemical, petroleum and gas technology. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Item Type: Article
Funders: University of Malaya HIR-MOHE D000003-16001, University of Malaya Centre for Ionic Liquids (UMCiL)
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Uncontrolled Keywords: Deep eutectic solvent, Ionic liquid, Triethylene glycol, Choline, chloride, Phosphonium salt, Hydrogen bond donor, OIL-BASED BIODIESEL, PALM-OIL, ETHYLENE-GLYCOL, IONIC LIQUIDS, AMMONIUM, TEMPERATURE, DENSITIES, MIXTURES, GLYCEROL, CATALYST,
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 09 Mar 2016 02:46
Last Modified: 19 Mar 2019 03:37

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