Method for preparing composite oxide having oxygen absorbing and desorbing capability
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United States of America Patent
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Dec 10, 1996
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app pub date -
Oct 2, 1995
filing date -
Jun 21, 1993
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Abstract
A method for preparing a composite oxide having oxygen absorbing and desorbing capability involves the steps of: providing a starting composite oxide comprising cerium oxide, zirconium oxide, and hafnium oxide; subjecting the starting composite oxide to heating-deoxidation to give a deoxidized composite oxide; and subjecting the deoxidized composite oxide to heating-oxidation.
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