Cerium oxide with pores having a lamellar structure, preparation method therefor and use thereof in catalysis
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United States of America Patent
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Nov 30, 1999
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N/A
app pub date -
Mar 1, 1999
filing date -
Dec 4, 1995
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Expired
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Abstract
A cerium oxide with pores having a uniform lamellar structure. The pores may be at least partially arranged in substantially parallel directions and may also extend throughout the grain. The method for preparing said cerium oxide comprises heat treating a compound that essentially consists of cerium carbonate octahydrate. The atmosphere in which the treatment is performed includes an air/steam or oxygen/steam mixture with a steam volume fraction of at least 40%. Said cerium oxide is particularly useful as a catalyst, especially in motor vehicle post-combustion catalysis.
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