Solid-Phase Hydrogen Storage Based on NH₃BH₃-SiO₂ Nanocomposite for Thermolysis

Table 2

Hydrogen evolution parameters of various AB-SiO₂ NP composites in the dehydrogenation reaction of AB via thermolysis.

Composites	Onset temp. (°C)	H2 yield (wt%)^a	Reaction time (s)
AB : SiO2 : 2	90	11.59	106
AB : SiO2 : 1.5	89	12.00	48
AB : SiO2 : 1	91	5.67	95

^a1.0217 times increased by data fitting with the van der Waals equation instead of the ideal gas equation. Note that some harmful byproducts, e.g., NH₃ gas, may be included at an approximate level of thousands of ppm for each sample.