Effect of the number, position and length of alkyl chains on the physical properties of polysubstituted pyridinium ionic liquids

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Pedro Verdía (Autor) Outra; Marta Hernaiz (Autor) Outra; Emilio J. González (Autor) FEUP; Eugénia A. Macedo (Autor) FEUP; Josefa Salgado (Autor) Outra; Emilia Tojo (Autor) Outra

Revista

Título: Journal of Chemical Thermodynamics

Vol. 69

Páginas: 19-26

ISSN: 0021-9614

Editora: Elsevier

Indexação

ISI Web of Knowledge

ISI Web of Science

Scopus - 29 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Projetos Associados

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

Outras Informações

ID Authenticus: P-008-FXF

DOI: 10.1016/j.jct.2013.09.028

Abstract (EN): The knowledge of the physical properties of ionic liquids is of high importance in order to evaluate their potential applicability for a given purpose. In the last few years, ionic liquids have been proposed as promising solvents for extractive desulfurization of fuels. Among them, recent studies have shown that ionic liquids derived from pyridinium affords excellent S-compounds removal capacity. In this work, the thermal analysis of five ionic liquids derived from pyridinium cation polysubstituted with different alkyl chains was carried out by Differencial Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA). Furthermore, the density, speed of sound, refractive index and dynamic viscosity for all the pure ionic liquids were also measured from T = (298.15 to 343.15) K. The effect of the number of cation alkyl chains, their length, and their position on the pyridinium ring, on the ionic liquid physical properties is also analyzed and discussed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8