专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20060089256A1 Platinum-rhodium catalyst for automotive exhaust gas 审中-公开
标题翻译：用于汽车废气的铂 - 铑催化剂
公开(公告)号：US20060089256A1
公开(公告)日：2006-04-27
申请号：US11253619
申请日：2005-10-20
申请人： Masanori Shimizu , Shingo Sakagami , Eisaku Kondo
发明人： Masanori Shimizu , Shingo Sakagami , Eisaku Kondo
IPC分类号： B01J23/10
CPC分类号： B01D53/945 , B01J23/63 , B01J35/0006 , B01J37/0248 , Y02A50/2324 , Y02T10/22
摘要： The present invention has as its object the provision of a platinum-rhodium catalyst for automotive exhaust gas wherein the exhaust gas purification catalyst is provided with resistance to lean conditions due to fluctuations in the exhaust gas atmosphere due to fuel cuts of the automobile engine and the catalyst itself is provided with heat resistance due to mounting in the high temperature region right near the engine. Further, the platinum-rhodium catalyst for automotive exhaust gas of the present invention is formed with a catalyst layer from a mixture of a platinum catalyst carrier substance comprised of 95 to 99.9 wt % of a first catalyst carrier substance comprised of either first cerium oxide or activated alumina stabilized by zirconium carrying 0.1 to 5 wt % of platinum, a rhodium catalyst-carrying powder comprised of a second catalyst carrier substance of a rare earth metal element-stabilized zirconium oxide carrying 0.1 to 5 wt % of rhodium, a zirconium-stabilized second cerium oxide not carrying any catalytic precious metal, and a heat resistant inorganic oxide and a binder and is comprised of the catalyst layer and a catalyst carrier substrate carrying the catalyst layer on its surface.
摘要翻译：本发明的目的是提供一种用于汽车废气的铂 - 铑催化剂，其中排气净化催化剂由于汽车发动机的燃料切断引起的废气气氛的波动而具有耐稀薄条件，催化剂本身由于安装在发动机附近的高温区域而具有耐热性。此外，本发明的用于汽车废气的铂 - 铑催化剂由催化剂层形成，催化剂层由包含95-99.9重量％的第一催化剂载体物质的铂催化剂载体物质的混合物形成，所述第一催化剂载体物质由第一氧化铈或第一氧化铈由负载0.1至5重量％铂的锆稳定的活性氧化铝，载有0.1至5重量％铑的稀土金属元素稳定化氧化锆的第二催化剂载体物质的铑催化剂载体粉末，锆稳定的不含有任何催化贵金属的第二氧化铈和耐热无机氧化物和粘合剂，并且由催化剂层和在其表面上承载催化剂层的催化剂载体基质组成。

IPRDB

热门服务

关于我们

友情链接

联系方式