High Surface Area Nanoporous Polymers for Reversible HydrogenStorage

Journal Article · Thu Jun 29 04:00:00 EDT 2006 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm061186p· OSTI ID:917820

Germain, Jonathan; Hradil, Jiri; Frechet, Jean M.J.; Svec, Frantisek

Hydrogen adsorption using a series of nanoporous synthetic polymers has been studied. Promising results were obtained during the screening of commercially available porous polymer beads; of the polymers considered, hypercrosslinked Hypersol-Macronet MN200 resin exhibited the highest adsorption capacity for hydrogen. This initial success triggered the development of our own high surface area hypercrosslinked materials. Subjecting gel-type and macroporous vinylbenzyl chloride-based precursors swollen in dichloroethane to a Friedel-Crafts reaction catalyzed by iron trichloride afforded beads with surface areas of 1 930 and 1 300 m{sup 2}/g, respectively, as calculated using the BET equation. The former polymer reversibly stores up to 1.5 wt % H{sub 2} at a pressure of 0.12 MPa and a temperature of 77.3 K. The initial heat of adsorption of hydrogen molecules onto this polymer is 6.6 kJ/mol.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Basic EnergySciences
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 917820
• Report Number(s): LBNL--61712; BnR: KC020401C
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Vol. 18; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADSORPTION
ADSORPTION HEAT
CAPACITY
FRIEDEL-CRAFTS REACTION
HYDROGEN
HYDROGEN STORAGE
IRON
POLYMERS
RESINS
SURFACE AREA