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

Abstract

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.

Inventors:
 [1];  [1];  [1]
  1. (Boulder, CO)
Issue Date:
Research Org.:
Eltron Research, Inc., Boulder, CO (United States)
OSTI Identifier:
871894
Patent Number(s):
5821185
Assignee:
Eltron Research, Inc. (Boulder, CO) CHO
DOE Contract Number:  
FG02-91ER81165
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
solid; proton; electron; mediating; membrane; catalytic; reactors; provides; membranes; useful; oxidation; reduction; surface; comprise; single-phase; mixed; metal; oxide; material; formula; 1-x; 3-y; selected; sr; tb; mn; cu; combinations; equal; 02; catalyst; fabricated-by; combining; powders; oxides; carbonates; stoichiometric; ratio; ltoreq; times; repeatedly; calcining; milling; combined; obtained; pressing; sintering; singlephase; obtain; metal carbonates; membrane reactor; mediating membrane; membranes useful; electron mediating; catalytic membrane; mixed metal; metal oxide; metal oxides; oxide material; catalytic reactor; metal carbonate; membrane reactors; phase material; stoichiometric ratio; metal carbon; provides catalytic; catalytic reactors; mediating membranes; /502/

Citation Formats

White, James H., Schwartz, Michael, and Sammells, Anthony F. Solid state proton and electron mediating membrane and use in catalytic membrane reactors. United States: N. p., 1998. Web.
White, James H., Schwartz, Michael, & Sammells, Anthony F. Solid state proton and electron mediating membrane and use in catalytic membrane reactors. United States.
White, James H., Schwartz, Michael, and Sammells, Anthony F. Thu . "Solid state proton and electron mediating membrane and use in catalytic membrane reactors". United States. https://www.osti.gov/servlets/purl/871894.
@article{osti_871894,
title = {Solid state proton and electron mediating membrane and use in catalytic membrane reactors},
author = {White, James H. and Schwartz, Michael and Sammells, Anthony F.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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