Thermal behavior and heat capacities of pyrrolidinium-based ionic liquids by DSC

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Eugénia A. Macedo (Author) FEUP; Elena Gómez (Author) FEUP; Noelia Calvar (Author) Other; Ángeles Domínguez (Author) Other

Journal

Title: Fluid Phase Equilibria

Vol. 470 No. SI

Pages: 51-59

ISSN: 0378-3812

Publisher: Elsevier

Indexing

ISI Web of Science

Scopus

INSPEC

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Associated Projects

AIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable North Region of Portugal2020

Other information

DOI: 10.1016/j.fluid.2018.04.003

Abstract (EN): This work focuses on thermal study (melting, freezing, cold crystallization and glass transition temperatures have been determined) and on determination of heat capacities (in the temperature range from 293.15K to 333.15K) of several ionic liquids using differential scanning calorimetry. In order to study the effect of the anion and the alkyl-side chain of the cation of the ionic liquids on the thermal behavior and on the heat capacities values, the ionic liquids: 1-alkyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [C(n)MpyrNTf(2) (n = 2,3,4)], 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate (C(4)MpyrTFO), and 1-butyl-1-methylpyrrolidinium dicyanamide (C(4)MpyrDCA) were chosen. Besides, in order to analyze the influence of the anion of the ionic liquid on the heat capacity, the results obtained in this study were compared with those obtained in our previous work (for the C(n)MpyNTf(2) and C(n)MimNTf(2) ionic liquids). Finally, the obtained results were compared with literature values.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9