Adsorption, nanoporous materials hydrogen storage

Thomas KM. Adsorption and desorption of hydrogen on metal-organic framework materials for storage applications comparison with other nanoporous materials, Dalton Trans 2009, 2009,1487-1505. 

To date, Ref. [65] provides probably the most reliable data on a series of chemically activated carbons and also on other types of carbon materials, such as activated carbon fibers, CNTs, and CNFs. The best values measured for adsorption capacity at 298 K were 1.2 and 2.7 wt% at 20 and 50MPa, respectively. At 77K, the hydrogen adsorption capacity reached 5.6wt% at 4MPa. Such values demonstrate that nanoporous carbons are not worst than other kinds of materials studied at the moment for hydrogen storage. 

Ferey et al. measured hydrogen adsorption in nanoporous metal-benzenedi-carboxylates, where the metal is trivalent chromium or aluminum. Also in this case the material has a framework structure with high specific surface area (llOOm g ). The authors report for these samples type I adsorption isotherms with hysteresis. The maximum storage capacity obtained for the chromium compound is 3.1 and 3.8 wt% for the aluminum compound at 1.6 MPa and 77 K [54]. 

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