Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation
The present invention constitutes a class of organometallic complexes which reversibly react with hydrogen to form dihydrides and processes by which these compounds can be utilized. The class includes bimetallic complexes in which two cyclopentadienyl rings are bridged together and also separately [pi]-bonded to two transition metal atoms. The transition metals are believed to bond with the hydrogen in forming the dihydride. Transition metals such as Fe, Mn or Co may be employed in the complexes although Cr constitutes the preferred metal. A multiple number of ancillary ligands such as CO are bonded to the metal atoms in the complexes. Alkyl groups and the like may be substituted on the cyclopentadienyl rings. These organometallic compounds may be used in absorption/desorption systems and in facilitated transport membrane systems for storing and separating out H[sub 2] from mixed gas streams such as the product gas from coal gasification processes. 3 figures.
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- Battelle Memorial Institute, Richland, WA (United States)
- Patent Number(s):
- A; US 5057300
- Application Number:
- PPN: US 7-514657
- OSTI ID:
- 7102203
- Country of Publication:
- United States
- Language:
- English
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Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation
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ADSORBENTS
CARBONYLS
CHEMICAL COMPOSITION
CHROMIUM COMPLEXES
CHROMIUM COMPOUNDS
CHROMIUM HYDRIDES
COAL GAS
COBALT COMPLEXES
COBALT COMPOUNDS
COBALT HYDRIDES
COMPLEXES
ELEMENTS
FLUIDS
GASES
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN STORAGE
IRON COMPLEXES
IRON COMPOUNDS
IRON HYDRIDES
MANAGEMENT
MANGANESE COMPLEXES
MANGANESE COMPOUNDS
MANGANESE HYDRIDES
MATERIALS RECOVERY
NONMETALS
PROCESSING
PYROLYSIS PRODUCTS
SEPARATION PROCESSES
STORAGE
SYNTHESIS GAS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING