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11. 发明授权

US06602822B2 Catalyst for exhaust gas purification and exhaust gas purification system using the same 失效
标题翻译：用于废气净化的催化剂和使用其的废气净化系统
公开(公告)号：US06602822B2
公开(公告)日：2003-08-05
申请号：US09271155
申请日：1999-03-17
申请人： Naomi Noda , Yukinari Shibagaki , Junichi Suzuki
发明人： Naomi Noda , Yukinari Shibagaki , Junichi Suzuki
IPC分类号： B01J2344
CPC分类号： B01D53/9486 , B01D53/945 , B01D2255/1021 , B01J23/44 , B01J23/63 , B01J37/0248 , F01N3/0814 , F01N3/10 , F01N3/30 , F01N13/009 , F01N2410/06 , F01N2410/12 , Y02T10/22
摘要： A catalyst for exhaust gas purification includes (1) a monolithic carrier having passages and (2) palladium-loaded alumina obtained by immersing alumina in a palladium solution and then firing the resulting alumina and loaded on the monolithic carrier as a catalyst layer. In the catalyst, the catalyst layer loaded on the partition walls of the passages of the monolithic carrier has a thickness of 5 to 100 &mgr;m and the palladium/alumina (Pd/Al2O3) weight ratio in the catalyst layer is 0.03 to 0.30. This catalyst is a Pd-only catalyst improved in hydrocarbon purifiability during the cold start of engine.
摘要翻译：用于废气净化的催化剂包括（1）具有通道的整体式载体和（2）通过将氧化铝浸入钯溶液中而获得的负载钯的氧化铝，然后焙烧所得氧化铝并作为催化剂层负载在整体式载体上。在催化剂中，负载在整体式载体的通道的分隔壁上的催化剂层的厚度为5〜100μm，催化剂层中的钯/氧化铝（Pd / Al 2 O 3）重量比为0.03〜0.30。该催化剂是在发动机冷起动期间提高烃纯化性能的仅Pd催化剂。

12. 发明授权

US06350416B2 System for exhaust gas purification 失效
标题翻译：废气净化系统
公开(公告)号：US06350416B2
公开(公告)日：2002-02-26
申请号：US09093789
申请日：1998-06-09
申请人： Naomi Noda , Yukinari Shibagaki , Akira Takahashi , Hiroshige Mizuno
发明人： Naomi Noda , Yukinari Shibagaki , Akira Takahashi , Hiroshige Mizuno
IPC分类号： B01D5334
CPC分类号： B01D53/945 , B01D2255/912 , F01N3/0814 , F01N3/0835 , F01N13/009 , Y02T10/22
摘要： A system for exhaust gas purification disposed in the exhaust pipe of an internal combustion engine, includes an adsorbent formed by loading, on a monolithic carrier, (1) a zeolite containing at least one kind of ion of an element having an electronegativity of 1.40 or more and (2) a catalyst material formed by loading at least one kind of noble metal selected from Pt, Pd and Rh on a heat-resistant inorganic oxide, and at least one loaded carrier formed by loading, on a monolithic carrier, a catalyst component having a purifiability for the harmful substances present in the exhaust gas emitted from the engine and/or an adsorbent component having an adsorptivity for the hydrocarbons also present in the exhaust gas, the loaded carrier being provided upstream of the adsorbent in the flow direction of the exhaust gas and having a total volume of 0.6 l or more. In this system for exhaust gas purification, the thermal deterioration of the adsorbent is reduced because there is used an adsorbent of higher HC desorption start temperature and because the thermal load applied to the adsorbent is decreased by the use of a particular means.
摘要翻译：一种设置在内燃机的排气管中的废气净化系统，包括通过在整体式载体上装载（1）含有至少一种具有1.40的电负性的元素的离子的沸石形成的吸附剂，或更多和（2）通过将选自Pt，Pd和Rh中的至少一种贵金属负载在耐热无机氧化物上形成的催化剂材料，以及通过在整体式载体上负载催化剂形成的至少一种负载载体具有对从发动机排出的排气中存在的有害物质具有可净化性的成分和/或对废气中也存在的具有对烃的吸附性的吸附剂成分，负载载体在吸附剂的流动方向上游侧设置废气，总体积为0.6l以上。在这种废气净化系统中，由于使用HC解吸开始温度较高的吸附剂，因为通过使用特定的方法降低了对吸附剂的热负荷，所以吸附剂的热劣化降低。

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