Table 2 Storage material properties

Melting point

°C

−127

−78

−98

Boiling point

°C

101

−33.4

64.7

Density

kg/m³

770

683

792

Specific H₂ energy

wt-%

6.15

17.6

18.75

H₂ energy density

g/L

47

121

149

Enthalpy change (ΔH)

kJ/mol-H₂

68.3

30.6

16.6

Hydrogenation (non-PGM catalyst)

P, bar

10

150

51

Hydrogenation (non-PGM catalyst)

T, °C

240

375

250

Dehydrogenation (Pt-Al₂O₃ catalyst)

P, bar

2.5

2–20

20

Dehydrogenation (Pt-Al₂O₃ catalyst)

T, °C

360

350–800

290