Methane to syngas via ceramic membranes

Journal Article · Sun Jan 01 04:00:00 EST 1995 · American Ceramic Society Bulletin; (United States)

OSTI ID:6548180

Balachandran, U; Dusek, J T; Sweeney, S M ^[1]

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1. Argonne National Lab., IL (United States). Energy Technology Div.; and others

Long tubes of La[sub 0.2]Sr[sub 0.8]Fe[sub 0.6]Co[sub 0.4]O[sub x] (LSFC) membrane have been fabricated by plastic extrusion. Thermodynamic stability of the tubes was studied as a function of oxygen partial pressure by high-temperature XRD. Mechanical properties were measured and found to be adequate for a reactor material. Performance of the membrane strongly depended on the stoichiometry of the material. Fracture of certain LSFC tubes was the consequence of an oxygen gradient that introduced a volumetric lattice difference between the inner and outer walls. However, tubes made with LSFC-2 provided methane-conversion efficiencies of >99% in a reactor. Some of these reactor tubes have operated for up to 500 h. A thin-wall membrane ceramic material could prevent both fracture and chemical decomposition of the tubes.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6548180
• Journal Information: American Ceramic Society Bulletin; (United States), Journal Name: American Ceramic Society Bulletin; (United States) Vol. 74:1; ISSN 0002-7812; ISSN ACSBA7
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030400 -- Natural Gas-- Products & By-Products
10 SYNTHETIC FUELS
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36 MATERIALS SCIENCE
360200* -- Ceramics
Cermets
& Refractories
ALKALINE EARTH METAL COMPOUNDS
ALKANES
BULK DENSITY
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
COHERENT SCATTERING
DATA
DENSITY
DIFFRACTION
EXPANSION
EXPERIMENTAL DATA
FABRICATION
FLEXURAL STRENGTH
FLUIDS
FRACTURE PROPERTIES
GASES
HYDROCARBONS
INFORMATION
IRON COMPOUNDS
IRON OXIDES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MECHANICAL PROPERTIES
MEMBRANES
METHANE
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PEROVSKITES
PHYSICAL PROPERTIES
POISSON RATIO
PRODUCTION
RARE EARTH COMPOUNDS
SCATTERING
SHEAR PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SYNTHESIS GAS
TESTING
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YOUNG MODULUS