公开(公告)号：US07211540B2

公开(公告)日：2007-05-01

申请号：US10876755

申请日：2004-06-28

申请人： Tomohiko Nakanishi ,  Kazuhiko Koike ,  Tomomi Hase

发明人： Tomohiko Nakanishi ,  Kazuhiko Koike ,  Tomomi Hase

IPC分类号： B01J23/00 ,  B01J20/00 ,  B01J21/04

CPC分类号： B01J21/14 ,  B01D53/94 ,  B01J21/063 ,  B01J23/56 ,  B01J23/6527 ,  B01J35/04 ,  C04B38/0006 ,  C04B2111/0081 ,  C04B35/195

摘要： This invention is directed to providing a high-performance ceramic support being capable of realizing early activation of a catalyst due to direct loading while maintaining the excellent properties of the substrate ceramic, and being less susceptible to heat deterioration, by specifying the kind and combination of optimal replacing elements and the replacing amount and the like. A ceramic support comprising a substrate ceramic containing Mg, Al, Si and O as constituent elements are solid-dissolved therein Ti and W as the second component. The proportion of cordierite crystal having solid-dissolved therein W and Ti is 25 mol % or more, whereby a high-performance directly supporting ceramic support is realized.

摘要翻译： 本发明旨在提供一种高性能陶瓷载体，其能够通过直接负载来实现催化剂的早期活化，同时通过确定基体陶瓷的种类和组合来保持基板陶瓷的优异性能并且不易受热劣化 最佳替代元素和替换量等。 作为第二成分，含有Mg，Al，Si，O作为构成元素的基体陶瓷的陶瓷载体固溶化为Ti和W。 其中固溶有W和Ti的堇青石晶体的比例为25摩尔％以上，从而实现了高性能的直接支撑陶瓷载体。

公开(公告)号：US07084091B2

公开(公告)日：2006-08-01

申请号：US10793953

申请日：2004-03-08

申请人： Kazuhiko Koike ,  Masakazu Tanaka ,  Takumi Suzawa ,  Tomomi Hase ,  Tomohiko Nakanishi

发明人： Kazuhiko Koike ,  Masakazu Tanaka ,  Takumi Suzawa ,  Tomomi Hase ,  Tomohiko Nakanishi

IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J23/00 ,  B01J23/08 ,  B01J20/00

CPC分类号： B01J35/04 ,  B01J23/40

摘要： This invention provides a method for producing a ceramic catalyst body that can directly support a catalyst on a ceramic support without disposing a coating layer on the ceramic support. In the invention, a catalyst solution containing a catalyst component consisting of a negative complex ion resulting from a catalyst precursor is prepared, and a pH of the catalyst solution is adjusted in such a manner as to satisfy the relation E1>E2 and E1>0 where E1 is a surface potential of a matrix phase consisting of a cordierite-W composite body relative to the pH of the catalyst solution and E2 is a surface potential of a dispersed phase consisting of compounds other than the cordierite-W composite body. After the ceramic support is brought into contact with the catalyst solution to support the catalyst component, heat-treatment is conducted to bond the matrix phase consisting of the cordierite-W composite body and the catalyst component to support the catalyst on the ceramic support.

摘要翻译： 本发明提供了一种陶瓷催化剂体的制造方法，该陶瓷催化剂体可以直接在陶瓷载体上支撑催化剂，而不在陶瓷载体上设置涂层。 在本发明中，制备含有由催化剂前体产生的负配位离子组成的催化剂成分的催化剂溶液，调节催化剂溶液的pH以满足E 1> E 2和E 1> 0其中E 1是由堇青石-W复合体组成的基质相相对于催化剂溶液的pH的表面电位，E 2是由堇青石-W以外的化合物组成的分散相的表面电位 复合体。 陶瓷载体与催化剂溶液接触以支持催化剂组分之后，进行热处理以将由堇青石-W复合体和催化剂组分组成的基体相结合以将催化剂载持在陶瓷载体上。

公开(公告)号：US07067452B2

公开(公告)日：2006-06-27

申请号：US09960498

申请日：2001-09-24

申请人： Masakazu Tanaka ,  Tosiharu Kondo ,  Tomohiko Nakanishi ,  Kazuhiko Koike ,  Takashi Kondo ,  Tomomi Hase ,  Miho Ito

发明人： Masakazu Tanaka ,  Tosiharu Kondo ,  Tomohiko Nakanishi ,  Kazuhiko Koike ,  Takashi Kondo ,  Tomomi Hase ,  Miho Ito

IPC分类号： B01J23/00 ,  B01J21/00

CPC分类号： B01J35/04 ,  B01J23/40 ,  B01J23/56 ,  B01J33/00 ,  B01J37/0221 ,  B01J37/0248 ,  B01J38/00

摘要： (i) In a ceramic catalyst body which comprises a ceramic carrier which has a multitude of pores capable of supporting a catalyst directly on the surface of a substrate ceramic and a catalyst supported on the ceramic carrier, a layer containing an anti-evaporation metal such as Rh is formed on the outer surface of catalyst metal particles such as Pt or Rh. The layer containing the anti-evaporation metal protects the catalyst metal and prevents evaporation thereof, thereby suppressing the deterioration; and/or(ii) A ceramic catalyst body is made by having a main catalyst component and a promoter component directly on a ceramic carrier which can directly support the catalyst by substituting a part of the constituent elements of cordierite, and a trap layer is provided in the upstream thereof for trapping sulfur which is a catalyst poisoning component included in the exhaust gas. Since sulfur included in the exhaust gas can be collected by the trap layer, the catalyst poisoning component can be removed from the gas which enters the catalyst, thus preventing catalyst poisoning.

公开(公告)号：US06858563B2

公开(公告)日：2005-02-22

申请号：US10281265

申请日：2002-10-28

申请人： Takumi Suzawa ,  Masakazu Tanaka ,  Kazuhiko Koike ,  Miho Ito

发明人： Takumi Suzawa ,  Masakazu Tanaka ,  Kazuhiko Koike ,  Miho Ito

IPC分类号： F01N3/10 ,  B01D53/94 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  F01N3/08 ,  F01N3/24 ,  F01N3/28 ,  F01N13/02 ,  B01J21/04

CPC分类号： B01D53/9454 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2828 ,  F01N13/009 ,  F01N13/0097 ,  Y02A50/2324 ,  Y02T10/22

摘要： This invention aims at achieving early activation by use of a catalytic body having a low thermal capacity, and a low pressure loss, without using a coating layer to reduce exhaust emission. The invention is directed also to improve exhaust purification performance by improving the combination of catalytic bodies and performance of each catalytic body. In the invention, a start catalyst 1 is arranged at an upstream portion of an exhaust pipe P of a car engine E and a three way catalyst 2 is disposed on the downstream side. The start catalyst 1 can directly support catalytic components through chemical bonds by incorporating replacing elements into a substrate ceramic having high heat resistance such as cordierite. Because a coating layer is not necessary, the catalyst of the invention has a low heat capacity and a large open area and achieves reduction of exhaust emission, and reduction of a pressure loss, through early activation.

摘要翻译： 本发明旨在通过使用具有低热容量和低压力损失的催化体来实现早期活化，而不使用涂层来减少废气排放。 本发明还旨在通过改进催化剂体的组合和每个催化体的性能来提高排气净化性能。 在本发明中，起动催化剂1配置在汽车发动机E的排气管P的上游侧，三通催化剂2配置在下游侧。 启动催化剂1可以通过将更换元件并入具有高耐热性的基底陶瓷（例如堇青石）中，通过化学键直接支持催化组分。 由于不需要涂层，所以本发明的催化剂具有低的热容量和较大的开放面积，通过早期的活化来实现废气排放的减少和压力损失的降低。

公开(公告)号：US06248421B1

公开(公告)日：2001-06-19

申请号：US09234985

申请日：1999-01-22

申请人： Kazuhiko Koike ,  Tomohiko Nakanishi ,  Yosiyasu Andou

发明人： Kazuhiko Koike ,  Tomohiko Nakanishi ,  Yosiyasu Andou

IPC分类号： B32B312

CPC分类号： B01D53/9454 ,  B01D53/885 ,  B01D53/94 ,  B01J35/04 ,  F01N3/2828 ,  Y02T10/22 ,  Y10T428/24149 ,  Y10T428/24165

摘要： A reinforcing layer 4 of nearly a cylindrical shape is formed along the outer circumferential portion of a ceramic honeycomb structure which comprises a cylindrical outer circumferential skin layer 1 and cell walls 2, the reinforcing layer 4 being formed at a position maintaining a one-cell pitch from the outer circumferential skin layer 1 and extending from one end surface of the ceramic honeycomb structure toward the other end surface thereof. The reinforcing layer 4 is integrally formed, of the same material, with the outer circumferential skin layer 1 and the cell walls 2 to reinforce the strength in the circumferential direction. This makes it possible to decrease the thickness of the cell walls 2 to not larger than 100 &mgr;m yet maintaining moldability and resistance to thermal shock.

摘要翻译： 沿着陶瓷蜂窝结构体的外周部形成有大致圆筒状的加强层4，该陶瓷蜂窝结构体包括圆筒形的外周表皮层1和单元壁2，加强层4形成在保持单孔间距 从外周皮层1延伸并从陶瓷蜂窝结构体的一个端面朝向另一端面延伸。 增强层4与外周表皮层1和电池壁2一体地形成为同一材料，以增强圆周方向的强度。 这使得可以将电池壁2的厚度减小到不大于100μm，同时保持成型性和耐热冲击性。