Composition and method for polymer moderated catalytic water formation

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872731

Shepodd, Timothy Jon ^[1]

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1. Livermore, CA

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.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Livermore, CA)
• Patent Number(s): US 5998325
• OSTI ID: 872731
• Country of Publication: United States
• Language: English

Related Subjects

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/