Title: Mixed ionic and electronic conducting ceramic membranes for hydrocarbon processing

Abstract

The invention relates to mixed phase materials for the preparation of catalytic membranes which exhibit ionic and electronic conduction and which exhibit improved mechanical strength compared to single phase ionic and electronic conducting materials. The mixed phase materials are useful for forming gas impermeable membranes either as dense ceramic membranes or as dense thin films coated onto porous substrates. The membranes and materials of this invention are useful in catalytic membrane reactors in a variety of applications including synthesis gas production. One or more crystalline second phases are present in the mixed phase material at a level sufficient to enhance the mechanical strength of the mixture to provide membranes for practical application in CMRs.

Inventors:

Van Calcar, Pamela ^[1]; Mackay, Richard ^[2]; Sammells, Anthony F ^[3]

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+ Show Inventor Affiliations

1. Superior, CO
2. Lafayette, CO
3. Boulder, CO

Issue Date:

2002-01-01

Research Org.:

Eltron Research, Inc. (Boulder, CO)

OSTI Identifier:

874837

Patent Number(s):

6471921

Assignee:

Eltron Research, Inc. (Boulder, CO)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J23/002 - {Mixed oxides other than spinels, e.g. perovskite}
B01J2523/00 - Constitutive chemical elements of heterogeneous catalysts
B01J2523/24 - Strontium
B01J2523/31 - Aluminium
B01J2523/32 - Gallium
B01J2523/3706 - Lanthanum
B01J2523/842 - Iron
B01J35/065 - {Membranes}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B13/0255 - {characterised by the type of membrane}
C01B17/0465 - {Catalyst compositions}
C01B2210/0046 - Nitrogen
C01B2210/0051 - Carbon dioxide
C01B2210/0062 - Water
C01B2210/0071 - Sulfur oxides
C01B2210/0075 - Nitrogen oxides
C01B3/36 - using oxygen or mixtures containing oxygen as gasifying agents

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01C - AMMONIA

C01C3/0216 - {characterised by the catalyst used}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S48/05 - Diffusion membrane for gas reaction or separation
Y10S502/524 - Spinel
Y10S502/525 - Perovskite

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DOE Contract Number:  

FG02-94ER81750

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

mixed; ionic; electronic; conducting; ceramic; membranes; hydrocarbon; processing; relates; phase; materials; preparation; catalytic; exhibit; conduction; improved; mechanical; strength; compared; single; useful; forming; gas; impermeable; dense; films; coated; porous; substrates; membrane; reactors; variety; applications; including; synthesis; production; crystalline; phases; material; level; sufficient; enhance; mixture; provide; practical; application; cmrs; synthesis gas; phase material; /422/252/502/