Nonactivated Tego Magnan powder

Figure 2.6a shows typical kinetic cnrves of first desorption carried out in a Sieverts-type apparatns at the initial hydrogen pressure of 0.1 MPa (atmospheric pressure of 1 bar) for the as-received, nonmilled, and nonactivated Tego Magnan powder. For each temperatnre, a fresh load of sample was desorbed. At each tem-peratnre in Fig. 2.6a, the desorption process is complete with 100% of MgH des-... 

Fig. Z12 DSC curve of a commercial, as-received and nonactivated Tego Magnan powder obtained under argon flow and a heating rate 4°C/min...

Fig. 1.30 Arrhenius plots for dehydrogenation of MgH (Tego Magnan ) nulled for 20 h and catalyzed by 5 wt% Ni (tests were done in the temperature range 275-375°C using a nonactivated powder). Arrhenius plots were obtained using various models of decomposition process (Table 1.6)...

Fig. 2.6 (a) Desorption kinetic curves at various temperatures under initial hydrogen pressure of 0.1 MPa of the as-received, nonactivated, commercial MgH powder Tego Magnan and (b) the Arrhenius plot of the desorption rate for the estimate of the apparent activation energy, fi, using kinetics data for four temperatures 350, 375, 400, and 420°C (fi -120 kJ/mol). Coefficient of fit = 0.996... 

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