Title : On the long-term problem of the “super” storage of hydrogen in catalytically grown graphite nanofibers
In this work, an effective methodology was applied to analyze the well-known (but not reproduced by anyone) data on the “super” sorption of hydrogen in the know-how activated graphite nanofibers (GNF). Such processing of the thermal desorption and thermogravimetric data made it possible for the first time to determine (by two independent methods) the characteristics of the main hydrogen desorption peak, namely: the temperature of the highest desorption rate Tmax = 914- 950 K, the activation energy of desorption Q = 39 ± 3 kJ/mol(H2), the frequency factor of the rate constant of the desorption process K0 ≈ 0.15 s-1, the amount of released hydrogen ~ 7 wt%. These results are in satisfactory agreement with the results of the analysis of the data. At the same time, it should be noted that a large number of attempts to reproduce experimental data, for example, work, have not been crowned with success. The know-how technology of GNV activation in works can be disclosed by analyzing experimental data, especially electron microscopic data. The role and atomic mechanism of the spillover effect in the “super” sorption are considered. Some specific factors and aspects associated with anomalous results are considered in reviews.
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