Hydrogen storage via polyhydride complexes
- Univ. of Hawaii, Honolulu, HI (United States)
Polyhydride metal complexes are being developed for application to hydrogen storage. Complexes have been found which catalyze the reversible hydrogenation of unsaturated hydrocarbons. This catalytic reaction could be the basis for a low temperature, hydrogen storage system with a available hydrogen density greater than 7 weight percent. The P-C-P pincer complexes, RhH{sub 2}(C{sub 6}H{sub 3}-2,6-(CH{sub 2}PBu{sup t}{sub 2}){sub 2}) and IrH{sub 2}(C{sub 6}H{sub 3}-2,6-(CH{sub 2}PBu{sup t}{sub 2}){sub 2}) have unprecedented, long term stability at elevated temperatures. The novel iridium complex catalyzes the transfer dehydrogenation of cycloctane to cyclooctene at the rate of 716 turnovers/h which is 2 orders of magnitude greater than that found for previously reported catalytic systems which do not require the sacrificial hydrogenation of a large excess of hydrogen acceptor.
- Research Organization:
- National Renewable Energy Lab., Golden, CO (United States)
- OSTI ID:
- 456748
- Report Number(s):
- NREL/CP--430-21968-Vol.2; CONF-9605195--Vol.2; ON: DE97001438
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalytic dehydrogenation of cycloalkanes to arenes by a dihydrido iridium P-C-P pincer complex
Polyhydride complexes for hydrogen storage