Chapter 3. Thermal analysis and solid-state hydrogen storage: Mg/MgH2 system case study
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Basile Galey
Abstract
Through the Mg/MgH2 system case study, this chapter presents the primary interest of thermal analysis and calorimetry to study the hydrogen storage properties of solid-state materials in detail. The dehydrogenation temperature and the hydrogen storage capacity can be obtained by performing temperature programmed desorption and thermogravimetric analysis experiments. These two techniques allow fast experiments with only a few milligrams of sample and are generally used in the literature to study the potential of a new additive, the influence of the preparation method, and to test the performances of new storage systems.
For a deeper characterization of the dehydrogenation properties, specifically the kinetics (apparent activation energy) and the thermodynamics (enthalpy), DSC (differential scanning calorimetry) technique can be used. The Sieverts (volumetric) technique is a powerful tool to investigate the hydrogenation/dehydrogenation properties (kinetics and thermodynamics) and the reversibility of the storage system under isothermal conditions. Finally, the high-pressure DSC technique is of particular interest as it allows to couple calorimetric experiments with a volumetric analysis and study all the important hydrogen storage properties, including storage capacity, hydrogenation and dehydrogenation temperatures, apparent activation energies, and enthalpies, by using only one technique. In this chapter, the strengths and weaknesses of the different instruments are highlighted as well as the working principles and the measured storage properties.
Abstract
Through the Mg/MgH2 system case study, this chapter presents the primary interest of thermal analysis and calorimetry to study the hydrogen storage properties of solid-state materials in detail. The dehydrogenation temperature and the hydrogen storage capacity can be obtained by performing temperature programmed desorption and thermogravimetric analysis experiments. These two techniques allow fast experiments with only a few milligrams of sample and are generally used in the literature to study the potential of a new additive, the influence of the preparation method, and to test the performances of new storage systems.
For a deeper characterization of the dehydrogenation properties, specifically the kinetics (apparent activation energy) and the thermodynamics (enthalpy), DSC (differential scanning calorimetry) technique can be used. The Sieverts (volumetric) technique is a powerful tool to investigate the hydrogenation/dehydrogenation properties (kinetics and thermodynamics) and the reversibility of the storage system under isothermal conditions. Finally, the high-pressure DSC technique is of particular interest as it allows to couple calorimetric experiments with a volumetric analysis and study all the important hydrogen storage properties, including storage capacity, hydrogenation and dehydrogenation temperatures, apparent activation energies, and enthalpies, by using only one technique. In this chapter, the strengths and weaknesses of the different instruments are highlighted as well as the working principles and the measured storage properties.
Kapitel in diesem Buch
- Frontmatter I
- Abstract V
- Preface VII
- Contents IX
- List of contributors XI
- Chapter 1. Thermal analysis: a guide through catalyst’s synthesis and reaction process 1
- Chapter 2. Contribution of isothermal titration calorimetry to elucidate the mechanism of adsorption from dilute aqueous solutions on solid surfaces: data processing, analysis, and interpretation 47
- Chapter 3. Thermal analysis and solid-state hydrogen storage: Mg/MgH2 system case study 91
- Chapter 4. Using calorimetry to study catalytic surfaces and processes for biomass valorization 123
- Chapter 5. The correspondence of calorimetric studies with DFT simulations in heterogeneous catalysis 159
- Chapter 6. Major concern regarding thermophysical parameters’ measurement techniques of thermochemical storage materials 183
- Chapter 7. Calorimetric methods for key properties in refrigeration cycles 223
- Chapter 8. Calorimetry and thermal analysis for the study of polymer properties 245
- Chapter 9. Role of calorimetry in clathrate hydrate research 293
- Chapter 10. Thermal methods as a tool for studying cultural heritage 311
- Chapter 11. The application of calorimetry and thermal methods of analysis in the investigation of food 341
- Index 393
Kapitel in diesem Buch
- Frontmatter I
- Abstract V
- Preface VII
- Contents IX
- List of contributors XI
- Chapter 1. Thermal analysis: a guide through catalyst’s synthesis and reaction process 1
- Chapter 2. Contribution of isothermal titration calorimetry to elucidate the mechanism of adsorption from dilute aqueous solutions on solid surfaces: data processing, analysis, and interpretation 47
- Chapter 3. Thermal analysis and solid-state hydrogen storage: Mg/MgH2 system case study 91
- Chapter 4. Using calorimetry to study catalytic surfaces and processes for biomass valorization 123
- Chapter 5. The correspondence of calorimetric studies with DFT simulations in heterogeneous catalysis 159
- Chapter 6. Major concern regarding thermophysical parameters’ measurement techniques of thermochemical storage materials 183
- Chapter 7. Calorimetric methods for key properties in refrigeration cycles 223
- Chapter 8. Calorimetry and thermal analysis for the study of polymer properties 245
- Chapter 9. Role of calorimetry in clathrate hydrate research 293
- Chapter 10. Thermal methods as a tool for studying cultural heritage 311
- Chapter 11. The application of calorimetry and thermal methods of analysis in the investigation of food 341
- Index 393
