The static and transport properties of ether-based perrhenate ionic liquids and the ionic parachor application. (June 2021)

• Record Type: Journal Article
• Authors: Ma, Xiaoxue; Li, Fei; Kui, Si'ao; Song, Zongren; Gong, Lu; Fang, Dawei
• Is Part Of: Journal of chemical thermodynamics. Volume 157(2021)
• Publication Date: 2021-06
• Subjects: Ether-based limidazolium ionic liquids -- Perrhenate -- Physico-chemical properties -- Ionic parachor; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2021.106393
• Languages: English
• ISSNs: 0021-9614

Abstract

Graphical abstract: Two novel ether-based perrhenate ILs [C2 2O n Im][ReO4 ]( n = 1, 2) were synthesized successfully, and the relationship between static and transport properties and temperature were discussed. The predicted values of parachor, surface tension and refractive index of 7 kinds of ILs were obtained by the values of cationic parachor, [C2 2O n Im] + ( n = 1, 2), which are correlated quite well with their matching experimental ones. Highlights: Two ILs [C2 2O n Im][ReO4 ]( n = 1, 2) were synthesized at first. The 2OR group is favorable to decreasing viscosity of 1, 3-dialkylimidazolium ILs. The properties of E a, P, R m and α p are temperature-independent. V m is increases little with increasing temperature, W is opposite. The cationic parachors, [C2 2O n Im] + ( n = 1, 2), were obtained for the first time. Abstract: Two novel ether-based perrhenate ionic liquids [C2 2O n Im][ReO4 ]( n = 1, 2) were synthesized and characterized. The static properties and transport properties were measured, and the extended properties were calculated and investigated in the certain temperature range. Using the six anions of [ReO4 ] −, [OAc] −, [DCA] −, [NTF2 ] −, [SCN] − and [TfO] − as the reference ions, the values of cationic parachor for [C2 2O n Im] + ( n = 1, 2) were obtained for the first time. The predicted values of parachor, surface tension and refractive index of 7 kinds of ionic liquids were obtained by the cationic parachor values, which are correlated quite well with their matching experimental ones. The ether-functionalization of cation could decrease the viscosity of ILs, especially 2-ethoxyethyl (2O2) group.