Thermal stability of some imidazolium [NTf 2 ] ionic liquids: Isothermal and dynamic kinetic study through thermogravimetric procedures

Parajó, Juan José; Teijeira, Tamara; Fernández, Josefa; Salgado, Juan José; Villanueva, M.

doi:10.1016/j.jct.2017.04.016

Cited by 50 publications

(25 citation statements)

References 60 publications

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“…atmospheres, unlike what has been observed for other imidazolium based ILs [7,9,13]. So, we can conclude that the thermal stability of EAN IL is not affected by the atmosphere.…”

Section: Thermal Stabilitycontrasting

confidence: 59%

“…A thermogravimetric analyzer (TGA 7-Perkin Elmer) operating in dynamic and isothermal modes under nitrogen and air atmosphere was used to perform thermogravimetric analysis [7][8][9][10].…”

Section: Methodsmentioning

confidence: 99%

“…Each analysis was repeated three times. Determination procedures of onset and endset temperatures were described in previous papers [7][8][9][10][11][12]. Furthermore, isothermal TG analysis at temperatures lower than tonset, was used to determine the long-term thermal stability of ILs.…”

Section: Methodsmentioning

confidence: 99%

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Thermophysical characterization of ionogels of ethylamonium nitrate as advanced electrolytes for electrochemical devices

Parajó

López

Rodríguez

et al. 2017

Proceedings of the 21st International Electronic Conference on Synthetic Organic Chemistry

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Abstract:Among the multiple applications of ionic liquids (ILs) and ionogels, electrolytes for electrochemical devices have a highlighted position. The interest in mixtures of ILs with alkaline metals salts has increased in the last years, since the presence of some electrochemically active species, is required for any electrochemical application of these designer solvents, e.g. in batteries.Although physical characterization of common ILs, as ethylammonium nitrate (EAN), is extensively performed and published, thermophysical characterization of its ionogels is not yet well developed.In this work, the liquid range and thermal stability of ionogels of EAN and its mixtures with lithium nitrate (LiNO3), an inorganic salt with a common anion, were measured. Differential Scanning Calorimetry was employed to determine the melting and freezing temperatures, observing that the pure IL and mixture melt at 12 ºC and 3 ºC, respectively, whereas no processes associated to the formation of a crystalline phase was observed for ionogels.Moreover, using a thermogravimetric analyzer operating in dynamic and isothermal modes under dry air and nitrogen atmospheres, thermal stability analysis was performed. Pure IL and ionogels showed similar thermogravimetric curves characterized by a loss mass in a single step starting at 200 ºC and finishing at 300 ºC, approximately.

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“…atmospheres, unlike what has been observed for other imidazolium based ILs [7,9,13]. So, we can conclude that the thermal stability of EAN IL is not affected by the atmosphere.…”

Section: Thermal Stabilitycontrasting

confidence: 59%

“…A thermogravimetric analyzer (TGA 7-Perkin Elmer) operating in dynamic and isothermal modes under nitrogen and air atmosphere was used to perform thermogravimetric analysis [7][8][9][10].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Thermophysical characterization of ionogels of ethylamonium nitrate as advanced electrolytes for electrochemical devices

Parajó

López

Rodríguez

et al. 2017

Proceedings of the 21st International Electronic Conference on Synthetic Organic Chemistry

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“…The chemical and thermal stability of ILs has been studied in the literature, [49][50][51][52][53] although not under solar irradiation, to the best of our knowledge. Fig.…”

Section: Photostability Testsmentioning

confidence: 99%

Photostability and photocatalytic degradation of ionic liquids in water under solar light

et al. 2019

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“…The onset and peak decomposition temperatures calculated from the TG and DTG curves obtained from single temperature-ramp experiment often overestimates the long-term thermal stabilities of ILs because of the scanning nature of this test. Numerous works have shown through isothermal studies at temperatures quite below to the onset one, that ILs exhibit appreciable decomposition [3][4][5], nevertheless, this onset parameter can be used to analyse the relatively thermal stability of a set of ILs.…”

Section: Introductionmentioning

confidence: 99%

SHORT-TERM THERMAL STABILITY OF IONIC LIQUIDS

Parajó

López

Salgado

2017

Proceedings of the 21st International Electronic Conference on Synthetic Organic Chemistry

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Abstract:It has been frequently said that onset temperatures obtained from dynamic thermogravimetric analysis can be used to estimate the short-term thermal stability of materials and also the relative thermal stability.In this work the relative thermal stability was studied through dynamic analysis under the same experimental conditions for 50 Ionic Liquids (ILs). Several families with fixed anions and different cations and vice versa were chosen to have a comprehensive knowledge of thermal properties of ILs depending on the ions selection. Non-isothermal scans were performed under air atmosphere and a heating rate of 10 K · min -1 for all the selected ILs.It was observed that the anion influence on the thermal stability is stronger than the cation one,

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Thermal stability of some imidazolium [NTf 2 ] ionic liquids: Isothermal and dynamic kinetic study through thermogravimetric procedures

Cited by 50 publications

References 60 publications

<strong>Thermophysical characterization of ionogels of ethylamonium nitrate as advanced electrolytes for electrochemical devices</strong>

<strong>Thermophysical characterization of ionogels of ethylamonium nitrate as advanced electrolytes for electrochemical devices</strong>

Photostability and photocatalytic degradation of ionic liquids in water under solar light

<strong>SHORT-TERM THERMAL STABILITY OF IONIC LIQUIDS</strong>

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