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专利名称：Composite oxide having oxygen absorbing
and desorbing capability and method forpreparing same
发明人：Shinyao Yao,Hideo Yokoi,Tadatoshi
Murota,Kazuhiro Yamamoto,Shigeru Aozasa
申请号：US08/537629申请日：19951002公开号：US05580536A公开日：19961203
摘要：A composite oxide having oxygen absorbing and desorbing capability contains4.99-98.% by weight of cerium oxide, 1-95% by weight of zirconium oxide, 0.01-20% byweight of hafnium oxide, and 0.1- 10% by weight of an additional metal oxide selectedfrom titanium oxide, tungsten oxide, nickel oxide, copper oxide, iron oxide, aluminumoxide, silicon oxide, beryllium oxide, magnesium oxide, calcium oxide, strontium oxide,barium oxide, oxides of rare earth metals other than cerium, and mixtures thereof. Thecomposite oxide includes &PHgr; phase as a crystal phase, and has oxygen absorbing anddesorbing capability of at least 100 . mu.mol/g at 400°-700° C. The composite oxide isprepared by the wet method or by the dry method.
申请人：SANTOKU METAL INDUSTRY CO., LTD.
代理机构：Darby & Darby, P
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