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Title: Composition for absorbing hydrogen

Abstract

A hydrogen absorbing composition is described. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.

Inventors:
; ;
Publication Date:
Research Org.:
Westinghouse Savannah River Co
OSTI Identifier:
46295
Patent Number(s):
US 5,411,928/A/
Application Number:
PAN: 8-070,740
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 080201; PA: EDB-95:076313; SN: 95001384516
DOE Contract Number:
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 2 May 1995
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN FUEL; HYDROGEN STORAGE; ADSORBENTS; CHEMICAL COMPOSITION; GLASS; IMPREGNATION; PORE STRUCTURE; PERMEABILITY; SORPTION; DESORPTION

Citation Formats

Heung, L.K., Wicks, G.G., and Enz, G.L. Composition for absorbing hydrogen. United States: N. p., 1995. Web.
Heung, L.K., Wicks, G.G., & Enz, G.L. Composition for absorbing hydrogen. United States.
Heung, L.K., Wicks, G.G., and Enz, G.L. 1995. "Composition for absorbing hydrogen". United States. doi:.
@article{osti_46295,
title = {Composition for absorbing hydrogen},
author = {Heung, L.K. and Wicks, G.G. and Enz, G.L.},
abstractNote = {A hydrogen absorbing composition is described. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1995,
month = 5
}
  • A hydrogen storage composition is provided which defines a physical sol-gel matrix having an average pore size of less than 3.5 angstroms which effectively excludes gaseous metal hydride poisons while permitting hydrogen gas to enter. The composition is useful for separating hydrogen gas from diverse gas streams which may have contaminants that would otherwise render the hydrogen absorbing material inactive.
  • A hydrogen absorbing composition. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.
  • A hydrogen storage composition is provided which defines a physical sol-gel matrix having an average pore size of less than 3.5 angstroms which effectively excludes gaseous metal hydride poisons while permitting hydrogen gas to enter. The composition is useful for separating hydrogen gas from diverse gas streams which may have contaminants that would otherwise render the hydrogen absorbing material inactive.
  • This patent describes a process for removing hydrogen sulfide from a fluid stream containing hydrogen sulfide and less than 500 ppm of free hydrogen. It comprises contacting the fluid stream under suitable absorbing conditions with an absorbing composition consisting essentially of nickel oxide, alumina, and zinc oxide.