Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Solid state proton and electron mediating membrane and use in catalytic membrane reactors

Patent ·
OSTI ID:871894
 [1];  [1];  [1]
  1. Boulder, CO
+ Show Author Affiliations
This invention provides catalytic proton and electron mediating membranes useful in catalytic reactors. The membranes have an oxidation and a reduction surface and comprise a single-phase mixed metal oxide material of the formula: AB.sub.1-x B'.sub.x O.sub.3-y wherein A is selected from Ca, Sr or Ba ions; B is selected from Ce, Tb, Pr, or Th ions; B' is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Ga, or In ions, or combinations thereof; and x is greater than or equal to 0.02 and less than or equal to 0.5. The membranes can further comprise a catalyst on either the oxidation or reduction surface, or both. Membranes include those which are fabricated-by combining powders of metal oxides or metal carbonates of metal A ion, metal B ion and metal B' ion such that the stoichiometric ratio A:B:B' is 1:1-x:x where 0.2.ltoreq..times.0.5, repeatedly calcining and milling the combined powders until a single-phase material is obtained and pressing and sintering the singlephase material to obtain a membrane.
Research Organization:
Eltron Research, Inc., Boulder, CO (United States)
DOE Contract Number:
FG02-91ER81165
Assignee:
Eltron Research, Inc. (Boulder, CO)
Patent Number(s):
US 5821185
OSTI ID:
871894
Country of Publication:
United States
Language:
English

References (6)

Evaluation of Cathode Materials for the Electrochemical Membrane  H 2 S  Separator journal June 1991
Electrochemical Methane Activation to C 2 -Hydrocarbons Using Protonic Conductor journal September 1992
Oxide ion conduction in ytterbium-doped strontium cerate journal September 1988
The electrochemical oxidative dimerization of methane journal July 1992
Construction and operation of fuel cells based on the solid electrolyte BaCeO3:Gd journal February 1991
Electrocatalytic Methane Dimerization with a Yb‐Doped SrCeO3 Solid Electrolyte journal June 1991

Similar Records

Related Subjects

/502/
02
1-x
3-y
calcining
carbonates
catalyst
catalytic
catalytic membrane
catalytic reactor
catalytic reactors
combinations
combined
combining
comprise
cu
electron
electron mediating
equal
fabricated-by
formula
ltoreq
material
mediating
mediating membrane
mediating membranes
membrane
membrane reactor
membrane reactors
membranes
membranes useful
metal
metal carbon
metal carbonate
metal carbonates
metal oxide
metal oxides
milling
mixed
mixed metal
mn
obtain
obtained
oxidation
oxide
oxide material
oxides
phase material
powders
pressing
proton
provides
provides catalytic
ratio
reactors
reduction
repeatedly
selected
single-phase
singlephase
sintering
solid
sr
stoichiometric
stoichiometric ratio
surface
tb
times
useful