Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media
Ionic liquids, which are widely recognized as environmentally friendly solvents, stand out as promising alternatives to traditional heat-transfer fluids due to their outstanding heat-storage and heat-transfer capabilities. In the course of our ongoing research, we successfully synthesized ionic liqu...
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2024-11-01
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| author | Kunhao Liang Haiyun Yao Jing Qiao Shan Gao Mingji Zong Fengshou Liu Qili Yang Lanju Liang Dawei Fang |
| author_facet | Kunhao Liang Haiyun Yao Jing Qiao Shan Gao Mingji Zong Fengshou Liu Qili Yang Lanju Liang Dawei Fang |
| author_sort | Kunhao Liang |
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| description | Ionic liquids, which are widely recognized as environmentally friendly solvents, stand out as promising alternatives to traditional heat-transfer fluids due to their outstanding heat-storage and heat-transfer capabilities. In the course of our ongoing research, we successfully synthesized ionic liquids 1-ethyl-4-alkyl-1,2,4-triazolium alanine [Taz(2,<i>n</i>)][Ala], where (<i>n</i> = 4, 5); in this study, we present comprehensive data on their density, surface tension, isobaric molar heat capacity, and thermal conductivity for the first time. The key thermophysical parameters influencing the heat-transfer process, such as thermal expansibility, compressibility, isochoric heat capacity, and heat-storage density, were meticulously calculated from experimental data. Upon comparison with previously reported ionic liquids and commercially utilized heat-transfer fluids, [Taz(2,<i>n</i>)][Ala] demonstrated superior heat-storage and heat-transfer performance, particularly in terms of heat-storage density (~2.63 MJ·m<sup>−3</sup>·K<sup>−1</sup>), thermal conductivity (~0.190 W·m<sup>−1</sup>·K<sup>−1</sup>), and melting temperature (~226 K). Additionally, the presence of the alanine anion in [Taz(2,<i>n</i>)][Ala] provides more possibilities for its functional application. |
| format | Article |
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| institution | OA Journals |
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| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-47a17d6c331b436c9283fecbd97286c72025-08-20T02:04:59ZengMDPI AGMolecules1420-30492024-11-012922522710.3390/molecules29225227Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer MediaKunhao Liang0Haiyun Yao1Jing Qiao2Shan Gao3Mingji Zong4Fengshou Liu5Qili Yang6Lanju Liang7Dawei Fang8School of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaSchool of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang 277160, ChinaInstitute of Rare and Scattered Elements, College of Chemistry, Liaoning University, Shenyang 110036, ChinaIonic liquids, which are widely recognized as environmentally friendly solvents, stand out as promising alternatives to traditional heat-transfer fluids due to their outstanding heat-storage and heat-transfer capabilities. In the course of our ongoing research, we successfully synthesized ionic liquids 1-ethyl-4-alkyl-1,2,4-triazolium alanine [Taz(2,<i>n</i>)][Ala], where (<i>n</i> = 4, 5); in this study, we present comprehensive data on their density, surface tension, isobaric molar heat capacity, and thermal conductivity for the first time. The key thermophysical parameters influencing the heat-transfer process, such as thermal expansibility, compressibility, isochoric heat capacity, and heat-storage density, were meticulously calculated from experimental data. Upon comparison with previously reported ionic liquids and commercially utilized heat-transfer fluids, [Taz(2,<i>n</i>)][Ala] demonstrated superior heat-storage and heat-transfer performance, particularly in terms of heat-storage density (~2.63 MJ·m<sup>−3</sup>·K<sup>−1</sup>), thermal conductivity (~0.190 W·m<sup>−1</sup>·K<sup>−1</sup>), and melting temperature (~226 K). Additionally, the presence of the alanine anion in [Taz(2,<i>n</i>)][Ala] provides more possibilities for its functional application.https://www.mdpi.com/1420-3049/29/22/52271-ethyl-4-alkyl-1,2,4-triazoliumalanineionic liquidthermophysical parameterheat-transfer fluid |
| spellingShingle | Kunhao Liang Haiyun Yao Jing Qiao Shan Gao Mingji Zong Fengshou Liu Qili Yang Lanju Liang Dawei Fang Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media Molecules 1-ethyl-4-alkyl-1,2,4-triazolium alanine ionic liquid thermophysical parameter heat-transfer fluid |
| title | Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media |
| title_full | Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media |
| title_fullStr | Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media |
| title_full_unstemmed | Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media |
| title_short | Thermodynamic Evaluation of Novel 1,2,4-Triazolium Alanine Ionic Liquids as Sustainable Heat-Transfer Media |
| title_sort | thermodynamic evaluation of novel 1 2 4 triazolium alanine ionic liquids as sustainable heat transfer media |
| topic | 1-ethyl-4-alkyl-1,2,4-triazolium alanine ionic liquid thermophysical parameter heat-transfer fluid |
| url | https://www.mdpi.com/1420-3049/29/22/5227 |
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