Heat capacity and thermodynamic properties of alkali and alkali-earth borohydrides
| Autor: | Erika Michela Dematteis, Marcello Baricco, Torben R. Jensen, Steffen R. H. Jensen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Work (thermodynamics)
Borohydride Heat capacity Thermodynamics 02 engineering and technology Crystal structure 010402 general chemistry 01 natural sciences chemistry.chemical_compound Hydrogen storage Complex hydrides 020401 chemical engineering General Materials Science 0204 chemical engineering Physical and Theoretical Chemistry CALPHAD Alkaline earth metal Chemistry Alkali metal Atomic and Molecular Physics and Optics 0104 chemical sciences |
| Zdroj: | Dematteis, E M, Jensen, S R, Jensen, T R & Baricco, M 2020, ' Heat capacity and thermodynamic properties of alkali and alkali-earth borohydrides ', Journal of Chemical Thermodynamics, vol. 143, 106055 . https://doi.org/10.1016/j.jct.2020.106055 |
| DOI: | 10.1016/j.jct.2020.106055 |
| Popis: | In this work, the above room temperature heat capacity for different polymorphs of alkali and alkali-earth (i.e. Na, K, Rb, Cs, Mg, Ca) borohydrides has been measured by DSC as a function of temperature. The above room temperature measured Cp values have been compared with available extrapolated literature data, and they have been modelled as a function of temperature according to the Calphad method. The variations of Cp values for different polymorphs were studied in details and they have been related to the corresponding crystal structures, considering the mobility of the BH4− group. From the whole set of assessed thermodynamic data, possible correlations with dynamics and structural properties have been estimated. |
| Databáze: | OpenAIRE |
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