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发明公开
CN105813734A 排气净化用催化剂 有权

排气净化用催化剂
摘要：
本发明所涉及的排气净化用催化剂含有载持有贵金属的微晶A和没有载持贵金属的微晶B混合存在的氧化物颗粒。载持有贵金属的微晶A包括含有锆(Zr)和铈(Ce)中至少一种的氧化物，没有载持金属的微晶B包括含有铈(Ce)的氧化物，该氧化物中Ce的含有率(mol％)高于上述微晶A的氧化物中的含有率(mol％)的氧化物。该氧化物颗粒在1150℃的大气中的热处理5小时后的比表面积为30m2/g以上。
摘要（英）：

This exhaust gas purifying catalyst contains oxide particles which are a mixture of crystallites (A) that are loaded with a noble metal and crystallites (B) that are not loaded with a noble metal. The crystallites (A) that are loaded with a noble metal are composed of an oxide that contains zirconium (Zr) and/or cerium (Ce), while the crystallites (B) that are not loaded with a noble metal are composed of an oxide that contains cerium (Ce) and has a Ce content ratio (mol%) higher than the Ce content ratio (mol%) in the oxide of the crystallites (A). Each oxide particle has a specific surface area of 30 m2/g or more after a 5-hour heat treatment in the atmosphere at 1,150 DEG C.

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