Phosphate-containing ceramic structures for catalyst support and fluid filtering
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United States of America Patent
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Aug 13, 1991
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N/A
app pub date -
Jan 10, 1989
filing date -
Jan 10, 1989
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Expired
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Abstract
A monolithic ceramic structure, useful as a support for catalytic material or as a fluid filter, has a high surface area phase which consists essentially of a porous metal oxide material, at least 50% by weight of which is alumina, titania, and/or zirconia, and phosphate dispersed substantially througout the porous metal oxide material. The presence of the phosphate stabilizes the porous metal oxide material against thermal degradation during sintering or exposure to elevated temperatures encountered in catalytic service and thereby aids in the retention of higher overall surface area in the monolithic structure.
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