Thermophysical properties of the pure ionic liquid 1-butyl-1-methylpyrrolidinium dicyanamide and its binary mixtures with alcohols

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Gonçalves, JC (Author) FEUP; Alírio Rodrigues (Author) FEUP

Journal

Title: Journal of Chemical & Engineering Data

Vol. 58

Pages: 1425-1428

ISSN: 0021-9568

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 6 Citations

Associated Projects

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

Other information

Authenticus ID: P-00F-XTF

DOI: 10.1021/je400318z

Abstract (EN): Experimental density, speed of sound, viscosity, and refractive index data for the pure ionic liquid 1-butyl-1-methylpyrrolidinium dicyanamide, [BMpyr][dca], are reported from T = (293.15 to 343.15) K, together with the molar isobaric heat capacity from T = (293.15 to 333.15) K. Moreover, a thermal analysis was carried out for the pure ionic liquid using a differential scanning calorimetry. The density, speed of sound, refractive index, and molar isobaric heat capacity data were fitted to a simple polynomial (first and/or second order), while viscosity data were fitted to the Vogel-Fulcher-Tamman (VFT) equation. From the experimental density values, the thermal expansion coeffi cient was also calculated. For the binary systems {1-propanol, or 2-propanol, or 1-butanol + [BMpyr][dca]}, density, speed of sound, and refractive index data were also measured over the whole composition range at T = (298.15, 313.15 and 328.15) K and p = 0.1 MPa. From these data, the excess molar volumes and excess molar isentropic compressions were calculated and satisfactorily fitted to the Redlich-Kister equation. Finally, the obtained results are discussed in terms of interactions and structure factors in these binary mixtures. © 2013 American Chemical Society.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4