Polymer formulations for gettering hydrogen

Patent · 01 January 2000

OSTI ID:873193

Shepodd, Timothy J ^[1]

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1. 330 Thrasher Ave., Livermore, CA 94550

A novel method for preparing a hydrogenation composition comprising organic polymer molecules having carbon--carbon double bonds, for removing hydrogen from the atmosphere within enclosed spaces and particularly from atmospheres within enclosed spaces that contain air, water vapor, oxygen, carbon dioxide or ammonia. The organic polymers molecules containing carbon--carbon double bonds throughout their structures, preferably polybutadiene, polyisoprene and derivatives thereof, intimately mixed with an insoluble noble metal catalyst composition. High molecular weight polymers may be added to the organic polymer/catalyst mixture in order to improve their high temperature performance. The hydrogenation composition is prepared by dispersing the polymers in a suitable solvent, forming thereby a solution suspension, flash-freezing droplets of the solution in a liquid cryogen, freeze-drying the frozen droplets to remove frozen solvent incorporated in the droplets, and recovering the dried powder thus formed.

• Research Organization: SANDIA CORP
• DOE Contract Number: AC04-94AL85000
• Assignee: Shepodd, Timothy J. (330 Thrasher Ave., Livermore, CA 94550);Even, Jr., William R. (4254 Drake Way, Livermore, CA 94550)
• Patent Number(s): US 6110397
• OSTI ID: 873193
• Country of Publication: United States
• Language: English

Related Subjects

/252/423/502/
added
air
ammonia
atmosphere
atmospheres
bonds
bonds throughout
carbon
carbon dioxide
carbon--carbon
catalyst
catalyst composition
closed spaces
composition
composition comprising
comprising
comprising organic
contain
containing
containing carbon
cryogen
derivatives
dioxide
dispersing
double
double bond
double bonds
dried
dried powder
droplets
enclosed
enclosed space
enclosed spaces
flash-freezing
formed
forming
formulations
freeze-drying
frozen
gettering
gettering hydrogen
hydrogen
hydrogenation
improve
incorporated
insoluble
intimately
intimately mixed
liquid
metal
metal catalyst
method
mixed
mixture
molecular
molecular weight
molecules
molecules containing
noble
noble metal
novel
novel method
organic
organic polymer
organic polymers
oxygen
particularly
performance
polybutadiene
polyisoprene
polymer
polymer formulations
polymer molecules
polymers
polymers molecules
powder
preferably
preferably polybutadiene
prepared
preparing
recovering
remove
removing
removing hydrogen
solution
solvent
spaces
structures
suitable
suitable solvent
suspension
temperature
throughout
vapor
water
water vapor
weight
weight poly