Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/20507
Título: | Thermophysical properties of sulfonium- and ammonium-based ionic liquids |
Autor: | Bhattacharjee, Arijit Luis, Andreia Santos, Joao H. Lopes-da-Silva, Jose A. Freire, Mara G. Carvalho, Pedro J. Coutinho, Joao A. P. |
Palavras-chave: | TEMPERATURE MOLTEN-SALTS EXTENDED PRESSURE RANGE SENSITIZED SOLAR-CELLS SURFACE-TENSION MEASUREMENTS THERMODYNAMIC PROPERTIES PHYSICOCHEMICAL PROPERTIES ELECTROCHEMICAL PROPERTIES LOW-VISCOSITY CARBON-DIOXIDE BIS(TRIFLUOROMETHYLSULFONYL)IMIDE ANION |
Data: | 2014 |
Editora: | ELSEVIER SCIENCE BV |
Resumo: | Experimental data for the density, viscosity, refractive index, and surface tension of four sulfonium- and ammonium-based ionic liquids (ILs) with the common bis(trifluoromethylsulfonyl)imide anion were measured in the temperature range between 288.15 and 353.15K and at atmospheric pressure. The ILs considered include butyltrimethylammonium bis(trifluoromethylsulfonyl)imide, [N-4111][NTf2], tributyl-methylammonium bis(trifluoromethylsulfonyl)imide, [N-4441][NTf2], diethylmethylsulfonium bis(trifluoromethylsulfonyl)imide, [S-221] [NTf2], and triethylsulfonium bis(trifluoromethylsulfonyl)imide, [S-222][NTf2]. Based on the gathered results and on data taken from literature, the impact of the cation isomerism and of the size of the aliphatic tails, as well as the effect resulting from the substitution of a nitrogen by a sulfur atom as the cation central atom, on the thermophysical properties of sulfonium- and ammonium-based Its is discussed here. Remarkably, more symmetric cations present a lower viscosity for the same, and sometimes even for higher, alkyl chain lengths at the cation. Additional derivative properties, such as the isobaric thermal expansion coefficient, the surface thermodynamic properties and the critical temperature for the investigated ILs were also estimated and are presented and discussed. (C) 2014 Elsevier B.V. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20507 |
DOI: | 10.1016/j.fluid.2014.08.005 |
ISSN: | 0378-3812 |
Versão do Editor: | 10.1016/j.fluid.2014.08.005 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Thermophysical properties of sulfonium- and ammonium-based ionic liquids_10.1016j.fluid.2014.08.005.pdf | 1.59 MB | Adobe PDF |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.