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Proton conducting ceramic membranes for hydrogen separation

Patent ·
OSTI ID:1027462
 [1];  [2];  [3];  [4]
  1. South Jordan, UT
  2. Sandy, UT
  3. Midvale, UT
  4. Salt Lake City, UT
+ Show Author Affiliations
A multi-phase proton conducting material comprising a proton-conducting ceramic phase and a stabilizing ceramic phase. Under the presence of a partial pressure gradient of hydrogen across the membrane or under the influence of an electrical potential, a membrane fabricated with this material selectively transports hydrogen ions through the proton conducting phase, which results in ultrahigh purity hydrogen permeation through the membrane. The stabilizing ceramic phase may be substantially structurally and chemically identical to at least one product of a reaction between the proton conducting phase and at least one expected gas under operating conditions of a membrane fabricated using the material. In a barium cerate-based proton conducting membrane, one stabilizing phase is ceria.
Research Organization:
Ceramatec, Inc. (Salt Lake City, UT)
Sponsoring Organization:
USDOE
Assignee:
Ceramatec, Inc. (Salt Lake City, UT)
Patent Number(s):
8,012,380
Application Number:
11/835,823
OSTI ID:
1027462
Country of Publication:
United States
Language:
English

References (4)

Mixed hydrogen ion–electronic conductors for hydrogen permeable membranes journal November 2000
Characterization of ceramic hydrogen separation membranes with varying nickel concentrations journal October 2000
Electroconductivity and Ion Transport in Protonic Solid Electrolytes BaCe0.85R0.15O3–δ, where R is a Rare-Earth Element journal May 2003
Development of mixed-conducting oxides for gas separation journal May 1998

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36 MATERIALS SCIENCE