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Title: Mixed conducting membranes for syngas production

Abstract

This invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating components used in processes for producing syngas. The non-stoichiometric, A-site rich compositions of the present invention are represented by the formula (Ln.sub.x Ca.sub.1-x).sub.y FeO.sub.3-.delta. wherein Ln is La or a mixture of lanthanides comprising La, and wherein 1.0>x>0.5, 1.1.gtoreq.y>1.0 and .delta. is a number which renders the composition of matter charge neutral. Solid-state membranes formed from these compositions provide a favorable balance of oxygen permeance and resistance to degradation when employed in processes for producing syngas. This invention also presents a process for making syngas which utilizes such membranes.

Inventors:
 [1];  [1];  [2];  [3];  [4]
  1. (Allentown, PA)
  2. (Gainesville, FL)
  3. (Neckarsulm, DE)
  4. (Bountiful, UT)
Publication Date:
Research Org.:
Air Products and Chemicals, Inc. (Allentown, PA)
OSTI Identifier:
874935
Patent Number(s):
US 6492290
Assignee:
Air Products and Chemicals, Inc. (Allentown, PA) NETL
DOE Contract Number:  
FC26-97FT96052
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
mixed; conducting; membranes; syngas; production; multicomponent; metallic; oxides; suited; fabricating; components; processes; producing; non-stoichiometric; a-site; rich; compositions; represented; formula; lnsubx; casub1-xsuby; feosub3-delta; ln; mixture; lanthanides; comprising; 10>x>05; 11gtoreqy>10; delta; renders; composition; matter; charge; neutral; solid-state; formed; provide; favorable; balance; oxygen; permeance; resistance; degradation; employed; process; utilizes; particularly suited; mixed conducting; gas production; metallic oxide; /502/96/252/

Citation Formats

Dyer, Paul Nigel, Carolan, Michael Francis, Butt, Darryl, Van Doorn, Rene Hendrick Elias, and Cutler, Raymond Ashton. Mixed conducting membranes for syngas production. United States: N. p., 2002. Web.
Dyer, Paul Nigel, Carolan, Michael Francis, Butt, Darryl, Van Doorn, Rene Hendrick Elias, & Cutler, Raymond Ashton. Mixed conducting membranes for syngas production. United States.
Dyer, Paul Nigel, Carolan, Michael Francis, Butt, Darryl, Van Doorn, Rene Hendrick Elias, and Cutler, Raymond Ashton. Tue . "Mixed conducting membranes for syngas production". United States. https://www.osti.gov/servlets/purl/874935.
@article{osti_874935,
title = {Mixed conducting membranes for syngas production},
author = {Dyer, Paul Nigel and Carolan, Michael Francis and Butt, Darryl and Van Doorn, Rene Hendrick Elias and Cutler, Raymond Ashton},
abstractNote = {This invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating components used in processes for producing syngas. The non-stoichiometric, A-site rich compositions of the present invention are represented by the formula (Ln.sub.x Ca.sub.1-x).sub.y FeO.sub.3-.delta. wherein Ln is La or a mixture of lanthanides comprising La, and wherein 1.0>x>0.5, 1.1.gtoreq.y>1.0 and .delta. is a number which renders the composition of matter charge neutral. Solid-state membranes formed from these compositions provide a favorable balance of oxygen permeance and resistance to degradation when employed in processes for producing syngas. This invention also presents a process for making syngas which utilizes such membranes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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