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Molar enthalpy of m...
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Ma, ChunyanLuleå tekniska universitet,Energivetenskap,College of Chemical Engineering, Nanjing Tech University
(författare)
Molar enthalpy of mixing and refractive indices of choline chloride-based deep eutectic solvents with water
- Artikel/kapitelEngelska2017
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Elsevier,2017
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:ltu-47140
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-47140URI
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https://doi.org/10.1016/j.jct.2016.10.002DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Validerad; 2016; Nivå 2; 2016-11-03 (andbra)
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The molar enthalpies of mixing were measured for binary systems of choline chloride-based deep eutectic solvents (glycerol, ethylene glycol and malonic acid) with water at 298.15 K and 308.15 K, and atmospheric pressure with an isothermal calorimeter. Refractive indices were also measured at 303.15 K and atmospheric pressure. The binary mixtures of {chcl/glycerol (1:2) + water, chcl/ethylene glycol (1:2) + water} showed exothermic behaviour over the entire range of composition, while the binary mixture of {chcl/malonic acid (1:1) + water} showed endothermic behaviour at first and then changed to be exothermic with the increasing content of chcl/malonic acid (1:1). Experimental refractive indices were fitted with the Redlich–Kister equation, and experimental molar enthalpies of mixing were correlated with the Redlich–Kister equation and the non-random two-liquid (NRTL) model. The NRTL model with the fitted parameters was used to predict the vapour pressures of these three mixtures. For mixtures of {chcl/glycerol (1:2) + water} and {chcl/ethylene glycol (1:2) + water}, the predicted vapour pressures agreed well with the experimental reults from the literature. While for mixture of {chcl/malonic acid (1:1)+water}, the predicted vapour pressures showed deviation at the high concentration of chcl/malonic acid (1:1), and this was probably because of the complex molecular interaction between chcl/malonic acid (1:1) and water
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Guo, YanhuaCollege of Chemical Engineering, Nanjing Tech University
(författare)
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Li, DongxueCollege of Chemical Engineering, Nanjing Tech University
(författare)
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Zong, JianpengCollege of Chemical Engineering, Nanjing Tech University
(författare)
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Ji, XiaoyanLuleå tekniska universitet,Energivetenskap(Swepub:ltu)xiajix
(författare)
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Liu, ChangCollege of Chemical Engineering, Nanjing Tech University
(författare)
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Luleå tekniska universitetEnergivetenskap
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Chemical Thermodynamics: Elsevier105, s. 30-360021-96141096-3626
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