RT Journal Article
T1 Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis
A1 Delgado Mellado, Noemí
A1 Larriba Martínez, Marcos
A1 Navarro, Pablo
A1 Rigual Hernández, Victoria de los Ángeles
A1 Ayuso Sebastián, Miguel Aythami
A1 García González, Julián
A1 Rodríguez Somolinos, Francisco
AB Deep eutectic solvents (DESs) based on the cation choline have been proposed to date for a variety of applications due to their remarkable physicochemical properties. The thermal stability is one of the first properties of DESs that needs to be known since it limits the maximum operating temperature for which these solvents are useful in many applications. In this work, the thermal stability of eight different choline chloride-based DESs formed using levulinic acid, malonic acid, glycerol, ethylene glycol, phenylacetic acid, phenylpropionic acid, urea, and glucose as hydrogen bond donors (HBDs) has been studied using isothermal and dynamic thermogravimetric analysis/Fourier transform infrared-attenuated total reflectance spectroscopy (TGA/FTIR-ATR) techniques. Isothermal and dynamic FTIR-ATR was carried out to confirm the formation and to show the structural changes with temperature of the DESs, respectively. The onset decomposition temperatures of the DESs were obtained from dynamic TGA. However, the maximum operating temperatures determined by isothermal TGA in long-term scenarios have demonstrated to be significantly much lower than the onset decomposition temperatures for every DES studied. The thermal stability and the boiling point of HBDs have a crucial impact on the maximum operating temperature of DESs.
PB Elsevier
SN 0167-7322
YR 2018
FD 2018
LK https://hdl.handle.net/20.500.14352/95524
UL https://hdl.handle.net/20.500.14352/95524
LA eng
NO Delgado-Mellado, N.; Larriba, M.; Navarro, P.; Rigual, V.; Ayuso, M.; García, J.; Rodríguez, F. (2018). Thermal stability of choline chloride deep eutectic solvents by TGA/FTIR-ATR analysis. Journal of Molecular Liquids, 260, 37-43
NO Ministerio de Economía y Competitividad (España)
NO Comunidad de Madrid
NO Portuguese Foundation for Science and Technology
DS Docta Complutense
RD 7 abr 2025