Thermodynamics of the dehydrogenation of the LiBH4–YH3 composite: Experimental and theoretical studies
| Autor: | Jin-Yoo Suh, Young-Su Lee, Sang Sup Han, Young Whan Cho, Wonchul Cho, Jae-Hyeok Shim |
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| Rok vydání: | 2012 |
| Předmět: |
Standard enthalpy of reaction
Hydrogen Thermodynamic equilibrium Chemistry Mechanical Engineering Enthalpy Metals and Alloys Thermodynamics chemistry.chemical_element Thermodynamic databases for pure substances Entropy (classical thermodynamics) symbols.namesake Mechanics of Materials Materials Chemistry symbols Physical chemistry Dehydrogenation Van 't Hoff equation |
| Zdroj: | Journal of Alloys and Compounds. 510:L9-L12 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2011.09.005 |
| Popis: | Pressure–composition–temperature curves were constructed for the dehydrogenation of the LiBH 4 –YH 3 composite. The Van’t Hoff plot of the plateau pressure values showed that the reaction enthalpy and entropy were 51 kJ/mol H 2 and 101 J/K mol H 2 , respectively. Thermodynamic calculations were performed for the reaction in combination with first principles calculation. The calculated reaction enthalpy and entropy are in good agreement with the measured values. The equilibrium temperature for the reaction at 1 bar of hydrogen was estimated to be 232 °C. |
| Databáze: | OpenAIRE |
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