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Title: Hydrogen storage composition and method

Abstract

A hydrogen storage composition based on a metal hydride dispersed in an aerogel prepared by a sol-gel process. The starting material for the aerogel is an organometallic compound, including the alkoxysilanes, organometals of the form M(OR)x and MOxRy, where R is an alkyl group of the form C.sub.n H.sub.2n+1, M is an oxide-forming metal, n, x, and y are integers, and y is two less than the valence of M. A sol is prepared by combining the starting material, alcohol, water, and an acid. The sol is conditioned to the proper viscosity and a hydride in the form of a fine powder is added. The mixture is polymerized and dried under supercritical conditions. The final product is a composition having a hydride uniformly dispersed throughout an inert, stable and highly porous matrix. It is capable of absorbing up to 30 moles of hydrogen per kilogram at room temperature and pressure, rapidly and reversibly. Hydrogen absorbed by the composition can be readily be recovered by heat or evacuation.

Inventors:
 [1];  [1]
  1. (Aiken, SC)
Issue Date:
Research Org.:
WESTINGHOUSE SAVANNAH RIVER CO
OSTI Identifier:
875088
Patent Number(s):
6528441
Assignee:
Westinghouse Savannah River Company, L.L.C. (Aiken, SC) SRS
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hydrogen; storage; composition; method; based; metal; hydride; dispersed; aerogel; prepared; sol-gel; process; starting; material; organometallic; compound; including; alkoxysilanes; organometals; form; morx; moxry; alkyl; csubn; hsub2n1; oxide-forming; integers; valence; sol; combining; alcohol; water; acid; conditioned; proper; viscosity; fine; powder; added; mixture; polymerized; dried; supercritical; conditions; final; product; uniformly; throughout; inert; stable; highly; porous; matrix; capable; absorbing; 30; moles; kilogram; temperature; pressure; rapidly; reversibly; absorbed; readily; recovered; heat; evacuation; metal hydride; organometallic compound; sol-gel process; storage composition; /501/516/420/423/502/

Citation Formats

Heung, Leung K, and Wicks, George G. Hydrogen storage composition and method. United States: N. p., 2003. Web.
Heung, Leung K, & Wicks, George G. Hydrogen storage composition and method. United States.
Heung, Leung K, and Wicks, George G. Wed . "Hydrogen storage composition and method". United States. https://www.osti.gov/servlets/purl/875088.
@article{osti_875088,
title = {Hydrogen storage composition and method},
author = {Heung, Leung K and Wicks, George G.},
abstractNote = {A hydrogen storage composition based on a metal hydride dispersed in an aerogel prepared by a sol-gel process. The starting material for the aerogel is an organometallic compound, including the alkoxysilanes, organometals of the form M(OR)x and MOxRy, where R is an alkyl group of the form C.sub.n H.sub.2n+1, M is an oxide-forming metal, n, x, and y are integers, and y is two less than the valence of M. A sol is prepared by combining the starting material, alcohol, water, and an acid. The sol is conditioned to the proper viscosity and a hydride in the form of a fine powder is added. The mixture is polymerized and dried under supercritical conditions. The final product is a composition having a hydride uniformly dispersed throughout an inert, stable and highly porous matrix. It is capable of absorbing up to 30 moles of hydrogen per kilogram at room temperature and pressure, rapidly and reversibly. Hydrogen absorbed by the composition can be readily be recovered by heat or evacuation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Patent:

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