Functionally gradient material for membrane reactors to convert methane gas into value-added products

Patent · Mon Jan 01 04:00:00 EST 1996

OSTI ID:870683

Balachandran, Uthamalingam ^[1]; Dusek, Joseph T ^[2]; Kleefisch, Mark S ^[3]; Kobylinski, Thadeus P ^[4]

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1. Hinsdale, IL
2. Lombard, IL
3. Napersville, IL
4. Lisle, IL

A functionally gradient material for a membrane reactor for converting methane gas into value-added-products includes an outer tube of perovskite, which contacts air; an inner tube which contacts methane gas, of zirconium oxide, and a bonding layer between the perovskite and zirconium oxide layers. The bonding layer has one or more layers of a mixture of perovskite and zirconium oxide, with the layers transitioning from an excess of perovskite to an excess of zirconium oxide. The transition layers match thermal expansion coefficients and other physical properties between the two different materials.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5573737
• OSTI ID: 870683
• Country of Publication: United States
• Language: English

Related Subjects

/422/428/
air
bonding
bonding layer
coefficients
contacts
contacts air
convert
converting
converting methane
ethane gas
excess
expansion
expansion coefficient
expansion coefficients
functionally
functionally gradient
gas
gradient
gradient material
inner
inner tube
layer
layers
match
match thermal
material
materials
membrane
membrane reactor
membrane reactors
methane
methane gas
mixture
outer
outer tube
oxide
oxide layer
oxide layers
perovskite
physical
physical properties
products
properties
reactor
reactors
thermal
thermal expansion
transition
transition layer
transitioning
tube
value-added
value-added product
value-added-products
zirconium
zirconium oxide