Thermophysical characterization of the deep eutectic solvent choline chloride:ethylene glycol and one of its mixtures with water

Lapeña, D. ; Lomba, L. ; Artal, M. (Universidad de Zaragoza) ; Lafuente, C. (Universidad de Zaragoza) ; Giner, B.

Resumen: The deep eutectic solvent ethaline, containing choline chloride as H-bond acceptor and ethylene glycol as H-bond donor and one of its mixture with water are studied in this work. Ethaline is anhydrous, with a 1:2 mol ratio. Hydrated ethaline, choline chloride:ethylene glycol:water, was studied in a 1:1.98:0.95 mol ratio. Several volumetric, acoustic, optical, thermal, surface, and transport properties were measured and calculated. The working temperature ranges from 278.15 to 338.15 K at pressure = 0.1 MPa. The effects of temperature, water inclusion, and the nature of the donor compound are evaluated. With regard to temperature, the system''s behaviour is as expected: a linear relation for the thermodynamic properties and agreement with the Vogel-Fulcher-Tammann equation for the transport properties. The water molecules hardly modify the ethaline structure. The choline chloride – ethylene glycol interactions are weaker than those for choline chloride - glycerol.

Idioma: Inglés

DOI: 10.1016/j.fluid.2019.03.018

Año: 2019

Publicado en: FLUID PHASE EQUILIBRIA 492 (2019), 1-9
ISSN: 0378-3812

Factor impacto JCR: 2.838 (2019)

Categ. JCR: ENGINEERING, CHEMICAL rank: 56 / 143 = 0.392 (2019) - Q2 - T2
Categ. JCR: THERMODYNAMICS rank: 16 / 61 = 0.262 (2019) - Q2 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 80 / 158 = 0.506 (2019) - Q3 - T2

Factor impacto SCIMAGO: 0.762 - Chemical Engineering (miscellaneous) (Q1) - Physics and Astronomy (miscellaneous) (Q2) - Physical and Theoretical Chemistry (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E31-17R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Física (Dpto. Química Física)