Hydrogen Release from Graphite

Figure 1 shows the results obtained under thermal decomposition of samples using the method of prolong exposure at constant temperature. As one can see, the pressure of hydrogen release from the samples at 150 and 250°C is higher after the mechanical activation as compared with non-treated powder of MgH2. This effect is much more pronounced for the samples with graphite. 

A.A. Haasz, P. Franzen, J.W. Davis, S. Chiu, C.S. Pitcher, Two-region model for hydrogen trapping in and release from graphite, J. Appl. Phys. 77 (1995) 66... 

There hae been aoeie concern expreaaed on the peaaibllity ot an estploaion occurring after a proceaa tube rupture. The teaa released from the tube contracting the hot graphite moderator will produce acme hydrogen and carbon monoxide from the water gas reaction. 

Fig. 8.4 (A) BEAMR reactor examined by Ditzig et al. (2007) for hydrogen production from wastewater. The anode chamber contains graphite granules and the cathode chamber has a valve to release hydrogen gas. (B) Anode potential (vs.

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