resumo
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.
palavras-chave
2-HYDROXY ETHYLAMMONIUM FORMATE; SURFACE-TENSION; KNOEVENAGEL CONDENSATION; TRANSPORT-PROPERTIES; ALDOL CONDENSATIONS; PHYSICAL-PROPERTIES; CATALYTIC-ACTIVITY; CHAIN-LENGTH; TEMPERATURE; SOLVENT
categoria
Chemistry
autores
Bhattacharjee, A; Coutinho, JAP; Freire, MG; Carvalho, PJ
nossos autores
Arijit Bhattacharjee
Bolseiro de pós-Doutoramento
Mara Guadalupe Freire Martins
Investigador Coordenador
Pedro J. Carvalho
Professor AuxiliarGrupos
G4 - Materiais Renováveis e Economia Circular
G5 - Materiais Biomiméticos, Biológicos e Vivos
Projectos
CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)
Igy Technology: A Purication Platform using Ionic-Liquid-Based Aqueous Biphasic Systems (IGYPURTECH)
agradecimentos
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.