Mixed conducting membranes for syngas production

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874935

Dyer, Paul Nigel ^[1]; Carolan, Michael Francis ^[1]; Butt, Darryl ^[2]; Cutler, Raymond Ashton ^[3]

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1. Allentown, PA
2. Gainesville, FL
3. Bountiful, UT

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.

• Research Organization: Air Products and Chemicals, Inc. (Allentown, PA)
• DOE Contract Number: FC26-97FT96052
• Assignee: Air Products and Chemicals, Inc. (Allentown, PA)
• Patent Number(s): US 6492290
• OSTI ID: 874935
• Country of Publication: United States
• Language: English

Related Subjects

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/