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CATALYTIC COMPOSITIONS CONTAINING ZIRCONIUM, CERIUM AND YTTRIUM OXIDES AND USE THEREOF IN THE TREAT 检索报告

2023-01-21 3310 61K 0

专利信息

申请日期 2025-07-10 申请号 WOEP09054715
公开(公告)号 WO2009130202A3 公开(公告)日 2009-12-23
公开国别 WO 申请人省市代码 全国
申请人 RHODIA OPERATIONS; LARCHER OLIVIER; ROHART EMMANUEL; IFRAH SIMON
简介 The invention relates to a composition containing zirconium, cerium and yttrium oxides with a cerium oxide proportion of between 3% and 15%, and yttrium oxide proportions corresponding to the following conditions : 6% at most if the cerium oxide proportion is between 12% excluded and 15% included; 10% at most if the cerium oxide proportion is between 7% excluded and 12% included; 30% at most if the cerium oxide proportion is between 3% and 7% included; the balance consisting of zirconium oxide. The composition may optionally include an oxide of a rare earth selected from lanthanum, neodymium and praseodymium. The composition can be used to treat exhaust gases from a vehicle.


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