Weight Percent of a Hydride Phase and Hydrogen by DSC

4 Weight Percent of a Hydride Phase and Hydrogen by DSC Method 

In DSC measurements, the weight percent of a phase was calculated using the peak area of the DSC curve and its reported heat of formation. For example, weight percent of the p-MgHj in a reactively milled powder can be estimated using the peak area of the DSC curves and the reported P-MgHj heat of formation (-74 kJ mol [175], which equals to -2,811 J g ). The DSC curve was analyzed by the NETZSCH thermal analysis software. First, the onset and end temperature of the peak were determined. Then, the peak area was calculated using the linear approach from the onset temperature to tlie end temperature (Fig. 1.37) by the DSC software. 

From the decomposition of P-MgH (MgH - Mg + H ), the weight percent of desorbed hydrogen can be calculated by  

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Hashimoto, H. Habazaki, M. Yamasaki, S. Meguro, T. Sasaki, H. Katagiri, T. Matsui, K. Fujimura, K. Izumiya, N. Kumagai, E. AMyama, Advanced materials for global carbon dioxide recycling, Mater. Sci. Eng. A 304-306 (2001) 88-96. 

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