Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties

Mackay, Richard; Sammells, Anthony F

Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties

Patent · Sat Jan 01 04:00:00 EST 2000

OSTI ID:873371

Mackay, Richard ^[1]; Sammells, Anthony F ^[2]

Lafayette, CO
Boulder, CO

Ceramics of the composition: Ln.sub.x Sr.sub.2-x-y Ca.sub.y B.sub.z M.sub.2-z O.sub.5+.delta. where Ln is an element selected from the fblock lanthanide elements and yttrium or mixtures thereof; B is an element selected from Al, Ga, In or mixtures thereof; M is a d-block transition element of mixtures thereof; 0.01.ltoreq.x.ltoreq.1.0; 0.01.ltoreq.y.ltoreq.0.7; 0.01.ltoreq.z.ltoreq.1.0 and .delta. is a number that varies to maintain charge neutrality are provided. These ceramics are useful in ceramic membranes and exhibit high ionic conductivity, high chemical stability under catalytic membrane reactor conditions and low coefficients of expansion. The materials of the invention are particularly useful in producing synthesis gas.

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Research Organization:: Eltron Research, Inc. (Boulder, CO)

DOE Contract Number:: FG02-94ER81750

Assignee:: Eltron Research, Inc. (Boulder, CO)

Patent Number(s):: US 6146549

OSTI ID:: 873371

Country of Publication:: United States

Language:: English

References (19)

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Oxygen-ion conductivity in BagIn6O17 Zhen, Y. S.; Goodenough, J. B. Materials Research Bulletin, Vol. 25, Issue 6 https://doi.org/10.1016/0025-5408(90)90207-I	journal	June 1990
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Effect of Cation Substitution on the Oxygen Semipermeability of Perovskite-type Oxides Teraoka, Yasutake; Nobunaga, Takashi; Yamazoe, Noboru Chemistry Letters, Vol. 17, Issue 3 https://doi.org/10.1246/cl.1988.503	journal	March 1988
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Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties

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References (19)

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