EventsThe 20th International Electronic Conference on Synthetic Organic Chemistry
Event submissions
Published
with-doi10.3390/ecsoc-20-f008
This submission belongs to the session f. Ionic Liquids of the event The 20th International Electronic Conference on Synthetic Organic Chemistry
Published date
01 Nov, 2016
Citation
Josefa Salgado, Juan José Parajó, María Villanueva, Tamara Teijeira, Temperature liquid range of two choline based ionic liquids, in Proceedings of The 20th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2016, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-20-f008
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Temperature liquid range of two choline based ionic liquids

Juan José Parajó 1
Tamara Teijeira 1
María Villanueva 1
Josefa Salgado 1
1. University of Santiago de Compostela
Abstract

Liquid temperature range of two ionic liquids (ILs) with the common cation, Choline, is determined in this work. The selected ILs are Choline tosylate [Chol][Tos] and Choline dicyanamide [Chol] [DCN].

The lower limit of liquid range is given by solid-liquid transitions and it is determined using differential scanning calorimetry (DSC) [1]. Upper limit is given by degradation temperature which is determined using the thermogravimetric technique (TGA) [2]. Dynamic and isothermal methods have been combined to estimate the maximum operation temperature.

Additionally, a deeper study of the effect of the heating and cooling rate on the temperature and shape of the transitions observed in DSC curves of [Chol] [DCN] was performed.

A common trend has been observed for melting and degradation temperatures of selected liquids:

[Chol][DCN]< [Chol][Tos]

 

Acknowledgments

This study was financed by the project EM2013/031 (Xunta de Galicia, Spain) and the network REGALIS R2014/015 (Xunta de Galicia, Spain).

 

References

[1] M. Villanueva, J. J. Parajó, P.B. Sánchez, J. García, J. Salgado, J. Chem. Thermodyn. 91, 127 (2015).

[2] J. Salgado, J. J. Parajó, J. Fernández, M. Villanueva, J. Chem. Thermodyn. 74, 51(2014).

Keywords
Ionic liquid
melting point
thermal stability
liquid range
Manuscript
Temperature liquid range of two choline based ionic liquids.pdf
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