公开(公告)号：US20090099013A1

公开(公告)日：2009-04-16

申请号：US12300651

申请日：2007-06-08

申请人： Akira Morikawa ,  Toshitaka Tanabe ,  Naoki Takahashi ,  Kae Yamamura ,  Takeru Yoshida ,  Akemi Sato

发明人： Akira Morikawa ,  Toshitaka Tanabe ,  Naoki Takahashi ,  Kae Yamamura ,  Takeru Yoshida ,  Akemi Sato

IPC分类号： B01J23/63 ,  B01J21/06 ,  B01J21/04

CPC分类号： C01B13/363 ,  B01D53/945 ,  B01D2255/204 ,  B01D2255/206 ,  B01D2255/40 ,  B01D2255/407 ,  B01J23/002 ,  B01J23/63 ,  B01J35/002 ,  B01J35/023 ,  B01J2523/00 ,  C01G25/02 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/3706 ,  B01J2523/3725 ,  B01J2523/48 ,  B01J2523/822

摘要： A particulate inorganic oxide contains an aluminum oxide, a metal oxide forming no composite oxide with an aluminum oxide, and at least one additional element selected from the group consisting of rare earth elements and alkaline earth elements. In the inorganic oxide, a percentage content of the additional element to a total amount of aluminum in the aluminum oxide, a metal element in the metal oxide, and the additional element is in a range from 1.1 at % to 8.0 at % in terms of element content. At least 80% of primary particles in the inorganic oxide have a particle diameter of 100 nm or smaller. At least a part of the primary particles have a surface concentrated region where a percentage content of the additional element is locally increased in a surface layer part thereof. The content of the additional element in the surface concentrated region to a whole amount of the inorganic oxide is in a range from 0.06% by mass to 0.98% by mass in terms of oxide amount.

摘要翻译： 颗粒状无机氧化物含有氧化铝，不与氧化铝形成复合氧化物的金属氧化物和至少一种选自稀土元素和碱土金属元素的附加元素。 在无机氧化物中，相对于氧化铝中的铝总量，金属氧化物中的金属元素和附加元素的添加元素的含量百分含量在1.1at％至8.0at％的范围内，以 元素内容。 无机氧化物中的至少80％的一次粒子的粒径为100nm以下。 至少一部分初级颗粒具有表面浓缩区域，其中附加元素的百分含量在其表面层部分局部增加。 表面浓缩区域中的附加元素与无机氧化物的总量的含量相对于氧化物量为0.06质量％〜0.98质量％。

公开(公告)号：US6025297A

公开(公告)日：2000-02-15

申请号：US969044

申请日：1997-11-12

申请人： Yoshitsugu Ogura ,  Takeru Yoshida

发明人： Yoshitsugu Ogura ,  Takeru Yoshida

IPC分类号： B01D53/94 ,  B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/58 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  B01J23/00

CPC分类号： B01J37/0221 ,  B01D53/9422 ,  B01D53/9431 ,  B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/58 ,  B01J35/0006 ,  B01J35/023 ,  B01D2255/102 ,  B01D2255/106 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/91 ,  Y10T428/29 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2993

摘要： A catalyst for purifying an exhaust gas includes a core, and a catalyst ingredient loading layer. The core includes a first support, and an NO.sub.x storage member involved in the first support. The catalyst ingredient loading layer includes a second support and a noble metal catalyst ingredient involved in the second support, and is formed on the core. The catalyst ingredient loading layer keeps SO.sub.x, included in the exhaust gas, from reaching the core. Hence, the NO.sub.x storage member is inhibited from being poisoned by sulfur. The NO.sub.x storage member is separated from the noble metal catalyst ingredient. Therefore, the noble metal catalyst ingredient is inhibited from sintering.

摘要翻译： 用于净化废气的催化剂包括核和催化剂成分加载层。 核心包括第一支撑件和参与第一支撑件的NOx存储构件。 催化剂成分加载层包括第二载体和参与第二载体的贵金属催化剂成分，并且形成在芯上。 催化剂成分加载层使包含在废气中的SO x不会到达核心。 因此，可以防止NOx储存部件被硫中毒。 NOx存储部件与贵金属催化剂成分分离。 因此，贵金属催化剂成分被抑制烧结。

公开(公告)号：US5972830A

公开(公告)日：1999-10-26

申请号：US570611

申请日：1995-12-11

申请人： Takeru Yoshida ,  Mikio Murachi ,  Shinji Tsuji ,  Norio Taguchi

发明人： Takeru Yoshida ,  Mikio Murachi ,  Shinji Tsuji ,  Norio Taguchi

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/04 ,  B01J23/02 ,  B01J23/04 ,  B01J23/10 ,  B01J23/58 ,  B01J35/10 ,  B01J37/03

CPC分类号： B01D53/9481 ,  B01D53/945 ,  B01J23/04 ,  B01J23/10 ,  B01J23/58 ,  B01J37/033 ,  B01J35/10 ,  Y02C20/10 ,  Y02T10/22

摘要： This catalyst support aims to improve heat resistant and durability by highly dispersing an NO.sub.x storage component. This catalyst support is produced by mixing a solution of a chemical compound including at least one element of alkali metals, alkaline-earth metals, and rare-earth elements with a solution of oxide sol of at least one metal of group IIIb, group IVa, and group IVb in the periodic table to prepare a mixed sol solution, forming the mixed sol solution into gel, and drying and calcining the gel. The obtained catalyst support is amorphous and attains a high specific surface area even when calcined at elevated temperatures, so that the catalyst support is superior in heat resistance.

摘要翻译： 该催化剂载体旨在通过高度分散NO x储存组分来改善耐热性和耐久性。 该催化剂载体通过将包含至少一种碱金属，碱土金属和稀土元素的化合物的溶液与IIIb族，Ⅳa族，Ⅳa族至少一种金属的氧化物溶液的溶液混合来制备， 和周期表IVb组，制备混合溶胶溶液，将混合溶胶溶液形成凝胶，干燥和煅烧凝胶。 所获得的催化剂载体是无定形的，并且即使在升高的温度下煅烧也获得高比表面积，使得催化剂载体的耐热性优异。

公开(公告)号：US08580705B2

公开(公告)日：2013-11-12

申请号：US13520363

申请日：2010-12-23

申请人： Yuki Aoki ,  Takeru Yoshida ,  Shingo Sakagami ,  Masaaki Kawai ,  Miho Hatanaka ,  Toshitaka Tanabe ,  Naoki Takahashi

发明人： Yuki Aoki ,  Takeru Yoshida ,  Shingo Sakagami ,  Masaaki Kawai ,  Miho Hatanaka ,  Toshitaka Tanabe ,  Naoki Takahashi

IPC分类号： B01J23/10

CPC分类号： B01D53/945 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/014 ,  B01J21/066 ,  B01J23/44 ,  B01J23/63 ,  B01J27/24 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22

摘要： An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.

摘要翻译： 废气净化催化剂包括限定排气通道的基板; 形成在所述基板上的下催化剂层，以及形成在所述下催化剂层上的上催化剂层。 下部催化剂层具有含有Pt和Pd中的至少一种的低级催化贵金属和支持下催化贵金属的下层载体。 上部催化剂层具有含有Rh的上部催化贵金属和支持上部催化贵金属的上层载体。 上层载体包括含有Ce，Zr，Al，Nd的至少一种元素的无机混合氧化物和选自Ce和碱土金属元素以外的稀土元素中的至少一种元素。 Nd不均匀地分布在覆盖无机混合氧化物内部区域的表面的覆盖层中。

公开(公告)号：US20130029838A1

公开(公告)日：2013-01-31

申请号：US13520363

申请日：2010-12-23

申请人： Yuki Aoki ,  Takeru Yoshida ,  Shingo Sakagami ,  Masaaki Kawai ,  Miho Hatanaka ,  Toshitaka Tanabe ,  Naoki Takahashi

发明人： Yuki Aoki ,  Takeru Yoshida ,  Shingo Sakagami ,  Masaaki Kawai ,  Miho Hatanaka ,  Toshitaka Tanabe ,  Naoki Takahashi

IPC分类号： B01J23/63

CPC分类号： B01D53/945 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/014 ,  B01J21/066 ,  B01J23/44 ,  B01J23/63 ,  B01J27/24 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22

摘要： An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.

摘要翻译： 废气净化催化剂包括限定排气通道的基板; 形成在所述基板上的下催化剂层，以及形成在所述下催化剂层上的上催化剂层。 下部催化剂层具有含有Pt和Pd中的至少一种的低级催化贵金属和支持下催化贵金属的下层载体。 上部催化剂层具有含有Rh的上部催化贵金属和支持上部催化贵金属的上层载体。 上层载体包括含有Ce，Zr，Al，Nd的至少一种元素的无机混合氧化物和选自Ce和碱土金属元素以外的稀土元素中的至少一种元素。 Nd不均匀地分布在覆盖无机混合氧化物内部区域的表面的覆盖层中。

公开(公告)号：US20090137387A1

公开(公告)日：2009-05-28

申请号：US12227523

申请日：2007-06-05

申请人： Michihiko Takeuchi ,  Hirotaka Ori ,  Takeru Yoshida ,  Kazunobu Ishibashi ,  Ichiro Hachisuka

发明人： Michihiko Takeuchi ,  Hirotaka Ori ,  Takeru Yoshida ,  Kazunobu Ishibashi ,  Ichiro Hachisuka

IPC分类号： B01J23/10 ,  B01J23/44 ,  B01J23/40 ,  B01J23/42

CPC分类号： B01J37/0234 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1026 ,  B01D2255/2065 ,  B01D2255/2068 ,  B01D2255/9022 ,  B01D2255/908 ,  B01J23/63 ,  B01J37/0244 ,  F01N2510/0682 ,  F01N2570/24 ,  Y02T10/22

摘要： The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent H2S purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.

摘要翻译： 本发明提供了一种排气净化催化剂，其包含基材和形成在基材上的两层以上的层叠催化剂被覆层，其中两层以上具有上层和下层，并且其中上层含有大的 贵金属的量比每一基底材料多于下层的贵金属，下层含有比上层更多的每升基材的大量的储氧/释放材料。 这种废气净化催化剂具有比常规催化剂更优异的H 2 S净化性能，同时保持对NOx和其它废气组分的净化性能。