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Title: Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation

Abstract

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.

Inventors:
;
Issue Date:
OSTI Identifier:
7102203
Patent Number(s):
5057300 A
Application Number:
PPN: US 7-514657
Assignee:
Battelle Memorial Institute, Richland, WA (United States)
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Patent File Date: 24 Apr 1990
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 01 COAL, LIGNITE, AND PEAT; ADSORBENTS; CHEMICAL COMPOSITION; HYDROGEN; MATERIALS RECOVERY; HYDROGEN STORAGE; CHROMIUM HYDRIDES; COBALT HYDRIDES; IRON HYDRIDES; MANGANESE HYDRIDES; SYNTHESIS GAS; SEPARATION PROCESSES; CARBONYLS; CHROMIUM COMPLEXES; COAL GAS; COBALT COMPLEXES; IRON COMPLEXES; MANGANESE COMPLEXES; CHROMIUM COMPOUNDS; COBALT COMPOUNDS; COMPLEXES; ELEMENTS; FLUIDS; GASES; HYDRIDES; HYDROGEN COMPOUNDS; IRON COMPOUNDS; MANAGEMENT; MANGANESE COMPOUNDS; NONMETALS; PROCESSING; PYROLYSIS PRODUCTS; STORAGE; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; 080107* - Hydrogen- Production- Coal Gasification; 080201 - Hydrogen- Chemisorption Storage; 010408 - Coal, Lignite, & Peat- C1 Processes- (1987-)

Citation Formats

Lilga, M A, and Hallen, R T. Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation. United States: N. p., 1991. Web.
Lilga, M A, & Hallen, R T. Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation. United States.
Lilga, M A, and Hallen, R T. Tue . "Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation". United States.
@article{osti_7102203,
title = {Bridged transition-metal complexes and uses thereof for hydrogen separation, storage and hydrogenation},
author = {Lilga, M A and Hallen, R T},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {10}
}