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ZIRCONIUM OXIDE SOL DOPED WITH RARE EARTH, AND PROCESS FOR PRODUCING SAME 发明申请

2023-03-20 4320 390K 0

专利信息

申请日期 2025-07-11 申请号 WOJP12054902
公开(公告)号 WO2012124466A1 公开(公告)日 2012-09-20
公开国别 WO 申请人省市代码 全国
申请人 NISSAN CHEMICAL INDUSTRIES LTD; KATO Hirokazu
简介 The purpose of the present invention is to provide an aqueous sol of zirconium oxide colloidal particles, which can be used suitably as a binder for an exhaust gas purification catalyst and has excellent heat resistance at temperatures around 1000°C, and in which the colloidal particles are dispersed homogeneously. The present invention is an aqueous sol of zirconium oxide colloidal particles in which zirconium oxide is doped with at least one rare earth element selected from the group consisting of lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, wherein the atomic ratio of the rare earth element to element zirconium is 0.2 to 10 at.% and the particle diameters of the colloidal particles fall within the range from 50 to 200 nm as measured by a dynamic light scattering method.


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