abstract
Experimental data for density, viscosity, refractive index and surface tension are reported, for the first time, in the temperature range between 288.15 and 353.15 K and at atmospheric pressure for two protic ionic liquids, namely 2-(dimethylamino)-N,N-dimethylethan-1-ammonium acetate, [N-11{2(N11)}H][CH3CO2], and N-ethyl-N,N-dimethylammonium phenylacetate, [N-112H][C7H7CO2]. The effect of the anion's aromaticity and the cation's aliphatic tails on the studied properties is discussed. Additional derived properties, such as isobaric thermal expansion coefficient, surface entropy and enthalpy and critical temperature, were estimated.
keywords
2-HYDROXY ETHYLAMMONIUM FORMATE; SURFACE-TENSION; KNOEVENAGEL CONDENSATION; TRANSPORT-PROPERTIES; ALDOL CONDENSATIONS; PHYSICAL-PROPERTIES; CATALYTIC-ACTIVITY; CHAIN-LENGTH; TEMPERATURE; SOLVENT
subject category
Chemistry
authors
Bhattacharjee, A; Coutinho, JAP; Freire, MG; Carvalho, PJ
our authors
Arijit Bhattacharjee
Post-doc Fellowship
Mara Guadalupe Freire Martins
Coordinating Researcher
Pedro J. Carvalho
Assistant ProfessorGroups
G4 - Renewable Materials and Circular Economy
G5 - Biomimetic, Biological and Living Materials
Projects
CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)
Igy Technology: A Purication Platform using Ionic-Liquid-Based Aqueous Biphasic Systems (IGYPURTECH)
acknowledgements
This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FCT UID /CTM /50011/2013), financed by national funds through the FCT/MEC and when applicable co-financed by FEDER under the PT2020 Partnership Agreement. P.J.C. and A.B. also acknowledge FCT for their post-doctoral grants SFRH/BPD/82264/2011 and SFRH/BPD/77858/2011, respectively. M. G. Freire acknowledges the European Research Council (ERC) for the Starting Grant ERC-2013-StG-337753.