Porous polymeric materials for hydrogen storage
AssigneeUchicago Argonne, LLC
InventorsLuping Yu, Di-Jia Liu, Shengwen Yuan, Junbing Yang
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Abstract
Porous polymers, tribenzohexazatriphenylene, poly-9,9′-spirobifluorene, poly-tetraphenyl methane and their derivatives for storage of H2 prepared through a chemical synthesis method. The porous polymers have high specific surface area and narrow pore size distribution. Hydrogen uptake measurements conducted for these polymers determined a higher hydrogen storage capacity at the ambient temperature over that of the benchmark materials. The method of preparing such polymers, includes oxidatively activating solids by CO2/steam oxidation and supercritical water treatment.
Claims20
A hydrogen storage system comprising:
- a porous polymer comprised of tribenzohexazatriphenylene having repeating units depicted by:
- wherein the porous polymer having a capacity between 0.004 and 0.008 kg H2/kg—ads gravimetric capacity
- measured at an ambient temperature of about 25 C.
A method of creating a porous polymer, the method comprising:
- reacting hexaketocyclohexane octahydrate and 3,3′-diaminobenzidine in a ratio of from about 0.5 to 2 to about 2 to 1 via steps of polymer condensation.
A hydrogen storage system comprising:
- a porous polymer comprised of tribenzohexazatriphenylene wherein:
- the porous polymer having a capacity of about 0.017 kg H2/kg—ads gravimetric capacity and a volumetric capacity of about 0.016 kg H2/L at −196 C and a volumetric capacity of 0.007 kg H2/L measured at an ambient temperature of about 25 C, and the porous polymer is formed by reacting hexaketocyclohexane octahydrate and 3,3′-diaminobenzidine.
Dependencies are inferred from the claim text.