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61.
公开(公告)号:US20090173065A1
公开(公告)日:2009-07-09
申请号:US12295811
申请日:2007-04-03
申请人: Jin Cho , Tomotaka Hirota , Kenji Tanikawa
发明人: Jin Cho , Tomotaka Hirota , Kenji Tanikawa
CPC分类号: F01N3/10 , B01D53/945 , B01D2255/10 , B01D2255/2092 , B01D2255/407 , B01D2255/9022 , B01D2255/9025 , B01D2255/9027 , B01J23/002 , B01J23/63 , B01J35/10 , B01J35/1014 , B01J37/0018 , B01J37/0234 , B01J37/0244 , B01J2523/00 , Y02T10/22 , Y10S502/52712 , B01J2523/3712 , B01J2523/3725 , B01J2523/48 , B01J2523/3706
摘要: An exhaust gas catalyst where the catalyst efficiency is improved by enhancing diffusion of the exhaust gas in a catalyst layer. An exhaust gas catalyst comprises at least a carrier and a plurality of layers formed on the carrier. At least one of the layers has pores therein, and at least one other layer has pores therein and contains, as catalyst components, a noble metal, alumina and a complex oxide mainly containing ceria, zirconia and one or more rare earth elements other than cerium.
摘要翻译: 一种排气催化剂,其催化剂效率通过增加催化剂层中废气的扩散而得到改善。 废气催化剂至少包括载体和形成在载体上的多个层。 其中至少一层在其中具有孔,并且至少一层其它层在其中具有孔,并且含有作为催化剂组分的贵金属,氧化铝和主要含有二氧化铈,氧化锆和除了铈之外的一种或多种稀土元素的复合氧化物 。
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公开(公告)号:US20090022641A1
公开(公告)日:2009-01-22
申请号:US11780094
申请日:2007-07-19
IPC分类号: B01D53/56 , B01J21/04 , B01J21/08 , B01J23/10 , B01J23/26 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/58
CPC分类号: B01J23/40 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2092 , B01D2255/9025 , B01D2255/908 , B01J23/63 , B01J37/0244 , Y02T10/22
摘要: A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Methods of making and using the same are also provided. In one or more embodiments, the catalyst comprises three layers of catalytic material in conjunction with a carrier. A first layer comprises a platinum component on a first support; a second layer comprises a rhodium component on a second support; and a third layer comprises a palladium component and a third support. The palladium, rhodium, and/or platinum can independently be deposited on a support of high surface area refractory metal oxide, or of an oxygen storage component, or both.
摘要翻译: 公开了具有同时催化烃和一氧化碳氧化和氮氧化物还原的能力的层状三元转化催化剂。 还提供了制备和使用它们的方法。 在一个或多个实施方案中,催化剂包括与载体结合的三层催化材料。 第一层包括在第一载体上的铂组分; 第二层包括在第二载体上的铑组分; 并且第三层包括钯组分和第三载体。 钯,铑和/或铂可以独立地沉积在高表面积难熔金属氧化物或储氧组分的载体上,或两者。
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63.
公开(公告)号:US20040209761A1
公开(公告)日:2004-10-21
申请号:US10824847
申请日:2004-04-15
发明人: Tatsuya Yoshikawa
IPC分类号: B01J029/06
CPC分类号: B01D53/945 , B01D2253/108 , B01D2255/1023 , B01D2255/1025 , B01D2255/50 , B01D2255/9025 , B01D2255/912 , B01J23/464 , B01J23/63 , B01J37/0244 , B01J37/0246 , B01J37/0248 , Y02T10/22
摘要: An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust gas from an internal combustion engine by using the catalyst. A catalyst possessing durability and excelling in the ability to adsorb hydrocarbon, the ability to purify, and the three-way performance is provided.
摘要翻译: 一种排气净化催化剂,其通过使第一含铑催化剂层,第二含沸石催化剂层和依次叠置在载体上的第三含钯催化剂层形成,以及从内部燃烧中净化废气的方法 引擎使用催化剂。 提供了具有耐久性和优异的吸附碳氢化合物的能力的催化剂,纯化的能力和三次性能。
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公开(公告)号:US06794330B2
公开(公告)日:2004-09-21
申请号:US09886145
申请日:2001-06-21
IPC分类号: B01J2108
CPC分类号: B01D53/9481 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2022 , B01D2255/2042 , B01D2255/20707 , B01D2255/20776 , B01D2255/30 , B01D2255/50 , B01D2255/9025 , B01D2255/91 , B01J23/58 , B01J27/1806 , B01J37/0244 , B01J37/0246 , B01J37/28 , F01N3/0814 , F01N3/0842 , F01N2510/063 , Y02T10/22
摘要: It is an object of the present invention to provide an exhaust gas purifying catalyst formed as a single catalyst that has a great deal of flexibility when being assembled into an exhaust system and that is capable of executing both an NOx absorbing function and a three-way function in a desired manner. To attain the this object, an absorbent catalyst layer to which an absorbent agent such as potassium and an acid material such as zeolite are added, an absorbent agent block layer formed of zeolite, and a three-way catalyst layer to which an acid material such as phosphorus is added are bonded together on a cordierite carrier. The acid material in the absorbent catalyst layer and the absorbent agent block layer inhibit the movement of the absorbent agent to the three-way catalyst layer, and transform the absorbent agent into harmless and stable potassium phosphate even if the absorbent agent reaches the three-way catalyst.
摘要翻译: 本发明的目的是提供一种形成为单一催化剂的废气净化催化剂,其在组装到排气系统中时具有大量的灵活性,并且能够同时执行NOx吸收功能和三通 以期望的方式起作用。 为了达到上述目的,添加了吸收剂如钾和酸性材料如沸石的吸收剂催化剂层,由沸石形成的吸收剂阻挡层,以及三元催化剂层,酸性材料 因为添加的磷在堇青石载体上结合在一起。 吸收剂催化剂层中的酸性物质和吸收剂阻挡层抑制吸收剂向三元催化剂层的移动,并且即使吸收剂达到三通,也将吸收剂转化为无害和稳定的磷酸钾 催化剂。
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公开(公告)号:US5407880A
公开(公告)日:1995-04-18
申请号:US147267
申请日:1993-11-05
申请人: Takuya Ikeda , Chiemi Hayashi , Tetsuo Ito , Koji Masuda , Maki Kamikubo
发明人: Takuya Ikeda , Chiemi Hayashi , Tetsuo Ito , Koji Masuda , Maki Kamikubo
IPC分类号: B01D53/94 , B01J29/08 , B01J29/40 , B01J29/44 , B01J29/46 , B01J29/70 , B01J29/80 , B01J37/02 , B01J29/06 , B01J29/068
CPC分类号: B01J37/0246 , B01D53/944 , B01J29/44 , B01J29/46 , B01J29/80 , B01J37/0244 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/20761 , B01D2255/2092 , B01D2255/504 , B01D2255/9025 , B01D2255/912 , B01J2229/42 , B01J29/084 , B01J29/40 , B01J29/7007
摘要: A catalyst for the adsorption of hydrocarbons is used in an apparatus for the purification of exhaust gas from an internal engine and comprises a honeycomb monolith carrier, a first layer of at least one zeolite having a different crystalline structure, a second layer containing at least one of Pt and Pd as a catalytic component, and a third layer containing Rh as a catalytic component.
摘要翻译: 用于吸附烃的催化剂用于从内部发动机净化废气的装置中,并且包括蜂窝状整料载体,具有不同结晶结构的至少一种沸石的第一层,包含至少一种 的Pt和Pd作为催化组分,以及含有Rh作为催化组分的第三层。
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公开(公告)号:US20180361358A1
公开(公告)日:2018-12-20
申请号:US15623545
申请日:2017-06-15
发明人: Douglas Allen Dobson
CPC分类号: B01J23/002 , B01D53/94 , B01D53/9468 , B01D2255/50 , B01D2255/9025 , B01D2255/9027 , B01D2255/912 , B01D2255/9155 , B01J23/00 , B01J35/0006 , B01J35/0053 , B01J35/006 , B01J35/065 , B01J37/0244 , B01J37/0246 , F01N3/021 , F01N3/0842 , F01N3/103 , F01N3/2066 , F01N13/009 , F01N13/0097 , F01N2370/04 , F01N2510/0684 , F01N2570/12
摘要: A layered emission control device for an engine system is provided, including a plurality of catalytic layers, the catalytic layers optionally or additionally comprising sublayers, each sublayer having a distinct composition. Advantages of such a device include providing increased treatment rates of one or more engine exhaust gas species over a wide range of engine exhaust operating conditions, while reducing exhaust emissions, and reducing a size of the emissions control system.
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公开(公告)号:US20180311649A1
公开(公告)日:2018-11-01
申请号:US15938068
申请日:2018-03-28
发明人: Guy Richard CHANDLER , Gregory Richard GREGORI , Paul Richard PHILLIPS , Jonathan David RADCLIFFE , Stuart REID
CPC分类号: B01D53/9422 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/9025 , B01D2255/91 , B01J23/63 , F01N3/0814 , F01N2370/00 , F01N2510/0684
摘要: A lean NOx trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NOx trap catalyst comprises a first layer, a second layer, and a third layer.
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公开(公告)号:US20180304244A1
公开(公告)日:2018-10-25
申请号:US15959911
申请日:2018-04-23
发明人: Yannick Daniel BIDAL , Andrew CHIFFEY , Jack CORPS , Laura MITCHELL-DOWNIE , Francois MOREAU , Matthew O'BRIEN
IPC分类号: B01J29/78 , B01J29/74 , B01J35/00 , B01J23/34 , B01J21/12 , B01J35/04 , B01D53/94 , F01N3/08
CPC分类号: B01J29/7815 , B01D53/9409 , B01D53/9413 , B01D53/9422 , B01D53/944 , B01D53/9463 , B01D53/9468 , B01D53/9472 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/2073 , B01D2255/2096 , B01D2255/502 , B01D2255/707 , B01D2255/9022 , B01D2255/9025 , B01D2255/9032 , B01D2255/904 , B01D2255/91 , B01D2255/9155 , B01D2258/012 , B01J20/00 , B01J21/00 , B01J21/12 , B01J23/34 , B01J29/74 , B01J35/0006 , B01J35/04 , F01N3/0814 , F01N2570/14
摘要: A NOx absorber catalyst for treating an exhaust gas from a diesel engine. The NOx absorber catalyst comprises a first region comprising a NOx absorber material comprising a molecular sieve catalyst, and a second region comprising a nitrogen dioxide reduction material; and a substrate having an inlet end and an outlet end.
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公开(公告)号:US20180304238A1
公开(公告)日:2018-10-25
申请号:US15936980
申请日:2018-03-27
申请人: Yoshinori SAITO , Hiromasa SUZUKI , Tatsuya OHASHI , Keiichi NARITA , Ryota NAKASHIMA , Mitsuyoshi OKADA , Ryosuke TAKASU , Shunsuke OISHI
发明人: Yoshinori SAITO , Hiromasa SUZUKI , Tatsuya OHASHI , Keiichi NARITA , Ryota NAKASHIMA , Mitsuyoshi OKADA , Ryosuke TAKASU , Shunsuke OISHI
CPC分类号: B01J23/464 , B01D53/945 , B01D53/9468 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/9025 , B01J23/44 , B01J35/0006 , B01J37/0236 , B01J37/0244 , B01J37/088 , F01N3/101
摘要: An exhaust gas purification catalyst having a substrate and a catalyst coating layer formed on the surface of the substrate, wherein the catalyst coating layer has the upper and lower layer having a lower layer closer to the surface of the substrate and an upper layer relatively remote from the surface of the substrate, the upper layer of the catalyst coating layer having Rh, Pd, and a carrier, the lower layer of the catalyst coating layer having at least one noble metal selected from Pd and Pt and a carrier, 65% by mass or more of Pd in the upper layer exists in a layer up to 50% of the upper layer in a thickness direction from the surface of the upper layer being relatively remote from the surface of the substrate, and the ratio of Pd to Rh by mass (Pd/Rh) is 0.5 to 0.7 in the upper layer.
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公开(公告)号:US20180223714A1
公开(公告)日:2018-08-09
申请号:US15517560
申请日:2015-10-08
IPC分类号: F01N3/28 , F01N13/14 , B01J21/16 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/50 , B01J27/224 , B01J35/04 , B01J37/02 , B01J37/08
CPC分类号: F01N3/2828 , B01D53/944 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/104 , B01D2255/9022 , B01D2255/9025 , B01J21/16 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/50 , B01J23/63 , B01J27/224 , B01J35/04 , B01J37/0228 , B01J37/0238 , B01J37/0244 , B01J37/08 , F01N3/10 , F01N13/14 , F01N2330/06 , Y02T10/22
摘要: A device for catalytic conversion of NOx to 8 and/or of CO to CO2, including: a ceramic support including at least a plurality of channels; a thermal barrier made of thermal insulating material covering at least one part of the internal surface of the channels; porous SiC at least partially covering the thermal barrier such that the SiC is separated from the support by the thermal barrier; one or more conversion catalysts at least on the SiC.
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