Relation between temperature–pressure dependence of internal pressure and intermolecular interactions in ionic liquids – Comparison with molecular liquids
| Autor: | Małgorzata Musiał, Edward Zorębski, Marzena Dzida |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
010304 chemical physics Hydrogen bond education Intermolecular force Internal pressure 02 engineering and technology 01 natural sciences Heat capacity Atomic and Molecular Physics and Optics Ion chemistry.chemical_compound 020401 chemical engineering chemistry 0103 physical sciences Ionic liquid Physical chemistry Isobaric process General Materials Science 0204 chemical engineering Physical and Theoretical Chemistry Alkyl |
| Zdroj: | The Journal of Chemical Thermodynamics. 131:347-359 |
| ISSN: | 0021-9614 |
| Popis: | The effect of alkyl chain length in cation, temperature and pressure on internal pressure was discussed for aprotic ionic liquids characterized by different hydrogen bonding ability resulting from the structure of the cation (disubstituted imidazolium, trisubstituted imidazolium, pyrrolidinium), and from the structure of the anion (tricyanomethanide, thiocyanate, ethyl sulfate, diethyl phosphate, acetate, bis(trifluoromethylsulfonyl)imide). The internal pressure was calculated by means of the acoustic method from the speed of sound, density and isobaric heat capacity data. The obtained results are compared and analysed along with available literature data. The internal pressure of ionic liquids was compared also with those of alkanes, alkanols, esters and diols. The obtained results show that temperature and pressure dependence of internal pressure for ionic liquids reflects the hydrogen bond capability between cation and anion. |
| Databáze: | OpenAIRE |
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