1
Shinya Yao, Hideo Yokoi, Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Composite oxide having oxygen absorbing and desorbing capability. Santoku Metal, Darby & Darby P C, November 5, 1996: US05571492 (19 worldwide citation)

A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.99% by weight of cerium oxide, 1-95% by weight of zirconium oxide and 0.01-20% by weight of hafnium oxide. The composite oxide includes .PHI.' phase as a crystal phase and has oxygen absorbing and desorbing capabilit ...


2
Shinya Yao, Hideo Yokoi, Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Method for preparing composite oxide having oxygen absorbing and desorbing capability. Santoku Metal, Darby & Darby P C, December 10, 1996: US05582785 (10 worldwide citation)

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 compo ...



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