公开(公告)号：US20160121302A1

公开(公告)日：2016-05-05

申请号：US14897940

申请日：2014-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Hiromasa SUZUKI ,  Isao CHINZEI ,  Akiya CHIBA ,  Kosuke IIZUKA

IPC: B01J23/10 ,  B01J37/16 ,  B01J37/12 ,  B01J37/00

CPC classification number: B01J23/10 ,  B01J37/0009 ,  B01J37/12 ,  B01J37/16 ,  C01G25/00 ,  C01P2002/50 ,  C01P2002/74 ,  C01P2004/61 ,  C01P2006/12 ,  B01J2523/00 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/3706 ,  B01J2523/36 ,  B01J2523/3718

Abstract: A ceria-zirconia-based composite oxide including a composite oxide containing ceria and zirconia, wherein the ceria-zirconia-based composite oxide contains at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in an amount of 0.5 to 5.0 mol % relative to a total amount of the cations contained in the ceria-zirconia-based composite oxide, where the ratio of the content of both cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in the ceria-zirconia-based composite oxide to the content of zirconium therein ([cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium]:[zirconium]) is in the range of 43:57 to 48:52 by mole ratio.

Abstract translation: 一种二氧化铈 - 氧化锆系复合氧化物，其包含含有二氧化铈和氧化锆的复合氧化物，其中所述二氧化铈 - 氧化锆系复合氧化物含有选自镨，镧和钇中的至少一种，其含量为0.5〜5.0 相对于二氧化铈 - 氧化锆类复合氧化物中所含的阳离子的总量的摩尔％，其中铈和选自镨，镧和钇中的至少一种的含量在 二氧化铈 - 氧化锆基复合氧化物与其中锆的含量（[铈和选自镨，镧和钇中的至少一种]：[锆]）在43:57至48的范围内 ：52摩尔比。