Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid
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2019
Authors
Janković, BojanManić, Nebojša
Buchner, Richard
Plowas-Korus, Iwona
Pereiro, Ana B.
Amado-Gonzalez, Eliseo
Article (Published version)
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Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 lt = v(GHz) lt = 50) at 25 degrees C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thennogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 degrees C at different heating rates (5, 10, 15 and 20 degrees C min(-1)). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger-Akahira-Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (alpha) for the investigated decomposi...tion processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects.
Keywords:
Thermal stability / Steric impediment / Isoconversional analysis / Ionic liquids / Dielectric spectroscopy / Anion chain lengthSource:
Thermochimica Acta, 2019, 672, 43-52Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- FCT/MCTES (Portugal) [IF/00190/2014]
- Associate Laboratory for Green Chemistry LAQV - FCT/MEC [UID/QUI/50006/2013]
- ERDF under the PT2020 Partnership Agreement [POCI-01-0145-FEDER-007265
- University of Pamplona [2-2017
- Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions (RS-MESTD-Basic Research (BR or ON)-172015)
- Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia” (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42010)
DOI: 10.1016/j.tca.2018.12.013
ISSN: 0040-6031
WoS: 000457661400005
Scopus: 2-s2.0-85058973613
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Mašinski fakultetTY - JOUR AU - Janković, Bojan AU - Manić, Nebojša AU - Buchner, Richard AU - Plowas-Korus, Iwona AU - Pereiro, Ana B. AU - Amado-Gonzalez, Eliseo PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3132 AB - Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 lt = v(GHz) lt = 50) at 25 degrees C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thennogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 degrees C at different heating rates (5, 10, 15 and 20 degrees C min(-1)). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger-Akahira-Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (alpha) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects. PB - Elsevier Science Bv, Amsterdam T2 - Thermochimica Acta T1 - Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid EP - 52 SP - 43 VL - 672 DO - 10.1016/j.tca.2018.12.013 ER -
@article{ author = "Janković, Bojan and Manić, Nebojša and Buchner, Richard and Plowas-Korus, Iwona and Pereiro, Ana B. and Amado-Gonzalez, Eliseo", year = "2019", abstract = "Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 lt = v(GHz) lt = 50) at 25 degrees C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thennogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 degrees C at different heating rates (5, 10, 15 and 20 degrees C min(-1)). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger-Akahira-Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (alpha) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Thermochimica Acta", title = "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid", pages = "52-43", volume = "672", doi = "10.1016/j.tca.2018.12.013" }
Janković, B., Manić, N., Buchner, R., Plowas-Korus, I., Pereiro, A. B.,& Amado-Gonzalez, E.. (2019). Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta Elsevier Science Bv, Amsterdam., 672, 43-52. https://doi.org/10.1016/j.tca.2018.12.013
Janković B, Manić N, Buchner R, Plowas-Korus I, Pereiro AB, Amado-Gonzalez E. Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta. 2019;672:43-52. doi:10.1016/j.tca.2018.12.013 .
Janković, Bojan, Manić, Nebojša, Buchner, Richard, Plowas-Korus, Iwona, Pereiro, Ana B., Amado-Gonzalez, Eliseo, "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid" in Thermochimica Acta, 672 (2019):43-52, https://doi.org/10.1016/j.tca.2018.12.013 . .