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:
-
- Allentown, PA
- Gainesville, FL
- (Neckarsulm, DE)
- Bountiful, UT
- Issue Date:
- Research Org.:
- Air Products and Chemicals, Inc. (Allentown, PA)
- OSTI Identifier:
- 874935
- Patent Number(s):
- 6492290
- Assignee:
- Air Products and Chemicals, Inc. (Allentown, PA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- 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}
}
Works referenced in this record:
Physicochemical and catalytic properties of La1-xCax FeO3-0.5x perovskites
journal, March 2000
- Isupova, L. A.; Yakovleva, I. S.; Tsybulya, S. V.
- Kinetics and Catalysis, Vol. 41, Issue 2