Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7717442 | International Journal of Hydrogen Energy | 2014 | 9 Pages |
Abstract
Ball milled (30 h) MgH2 is impregnated on the pores/grooves of activated charcoal scaffold using a programmed heat treatment at 550 °C under 5 bar pure hydrogen ambient. The result obtained by this approach is better and more consistent than the materials prepared by metal infiltration at 650 °C or vacuum heated samples under 550 °C. The activation energy value (88 kJ/mol) obtained in the case of impregnated catalyst free material is far better than the activation energy value of the unconfined material (149 kJ/mol). The impregnated material can absorb hydrogen almost closer to its actual capacity at â¼1 bar under 170 °C. The low temperature desorption characteristics and ab/desorption behaviors are extensively analyzed and described.
Related Topics
Physical Sciences and Engineering
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Authors
D. Pukazhselvan, Giovanni Capurso, Amedeo Maddalena, Sergio Lo Russo, Duncan Paul Fagg,