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Title: Composition and method for polymer moderated catalytic water formation

Abstract

A composition suitable for safely removing hydrogen from gaseous mixtures containing hydrogen and oxygen, particularly those mixtures wherein the hydrogen concentration is within the explosive range. The composition comprises a hydrogenation catalyst, preferably Pd dispersed on carbon, wherein the concentration of Pd is from about 1-10 wt %, dispersed in a polymeric material matrix. As well as serving as a matrix to contain the hydrogenation catalyst, the polymeric material, which is substantially unreactive to hydrogen, provides both a diffusion restriction to hydrogen and oxygen, thereby limiting the rate at which the reactants (hydrogen and oxygen) can diffuse to the catalyst surface and thus, the production of heat from the recombination reaction and as a heat sink.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
872731
Patent Number(s):
5998325
Assignee:
Sandia Corporation (Livermore, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
composition; method; polymer; moderated; catalytic; water; formation; suitable; safely; removing; hydrogen; gaseous; mixtures; containing; oxygen; particularly; concentration; explosive; range; comprises; hydrogenation; catalyst; preferably; pd; dispersed; carbon; 1-10; wt; polymeric; material; matrix; serving; contain; substantially; unreactive; provides; diffusion; restriction; limiting; rate; reactants; diffuse; surface; production; heat; recombination; reaction; sink; composition suitable; hydrogen concentration; hydrogenation catalyst; containing hydrogen; composition comprises; polymeric material; heat sink; gaseous mixture; removing hydrogen; gaseous mixtures; mixtures containing; preferably pd; /502/252/422/423/

Citation Formats

Shepodd, Timothy Jon. Composition and method for polymer moderated catalytic water formation. United States: N. p., 1999. Web.
Shepodd, Timothy Jon. Composition and method for polymer moderated catalytic water formation. United States.
Shepodd, Timothy Jon. Fri . "Composition and method for polymer moderated catalytic water formation". United States. https://www.osti.gov/servlets/purl/872731.
@article{osti_872731,
title = {Composition and method for polymer moderated catalytic water formation},
author = {Shepodd, Timothy Jon},
abstractNote = {A composition suitable for safely removing hydrogen from gaseous mixtures containing hydrogen and oxygen, particularly those mixtures wherein the hydrogen concentration is within the explosive range. The composition comprises a hydrogenation catalyst, preferably Pd dispersed on carbon, wherein the concentration of Pd is from about 1-10 wt %, dispersed in a polymeric material matrix. As well as serving as a matrix to contain the hydrogenation catalyst, the polymeric material, which is substantially unreactive to hydrogen, provides both a diffusion restriction to hydrogen and oxygen, thereby limiting the rate at which the reactants (hydrogen and oxygen) can diffuse to the catalyst surface and thus, the production of heat from the recombination reaction and as a heat sink.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Polymer-Protected Palladium Nanoparticles and Their Use in Catalysis
journal, October 1996