公开(公告)号：US5948376A

公开(公告)日：1999-09-07

申请号：US615789

申请日：1996-03-14

申请人： Naoto Miyoshi ,  Tuneyuki Tanizawa ,  Kazunobu Ishibashi ,  Koichi Kasahara ,  Syuji Tateishi

发明人： Naoto Miyoshi ,  Tuneyuki Tanizawa ,  Kazunobu Ishibashi ,  Koichi Kasahara ,  Syuji Tateishi

IPC分类号： B01D53/14 ,  B01D53/86 ,  B01D53/94 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J37/02

CPC分类号： B01D53/945 ,  B01D53/9481 ,  B01J23/58 ,  B01J23/63 ,  B01D2255/91 ,  B01J37/0248 ,  F01N2570/16 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases includes a porous support, an NO.sub.x storage component including at least one member selected from the group consisting of alkaline-earth metals, rare-earth elements and alkali metals, and loaded on the porous support, a noble metal catalyst ingredient loaded on the porous support, and disposed adjacent to the NO.sub.x storage component, and ceria (CeO.sub.2) disposed away from the noble metal catalyst ingredient. By disposing the noble metal catalyst ingredient adjacent to the NO.sub.x storage component, the reduction reactions of NO.sub.x can be facilitated in fuel-rich (i.e., oxygen-lean) atmospheres without being interfered by the ceria. By disposing the ceria away from the noble metal catalyst ingredient, oxygen, which has been stored thereon in fuel-lean (i.e., oxygen-rich) atmospheres, can be released from the ceria at a controlled rate in a controlled amount in fuel-rich (i.e., oxygen-lean) atmospheres, and thereby the released oxygen can be inhibited from reacting with HC and CO in fuel-rich (i.e., oxygen-lean) atmospheres. Thus, the catalyst is improved in terms of NO.sub.x purifying performance.

摘要翻译： 用于净化废气的催化剂包括多孔载体，包含选自碱土金属，稀土元素和碱金属中的至少一种的负载在多孔载体上的NOx储存组分，贵金属催化剂 负载在多孔载体上并且邻近于NOx储存组分设置的成分和远离贵金属催化剂成分的二氧化铈（CeO 2）。 通过将贵金属催化剂成分配置在与NOx存储成分相邻的位置，可以在不受二氧化铈干扰的情况下，富含燃料（即贫氧）的气氛中的NOx的还原反应变得容易。 通过将二氧化铈置于贵金属催化剂成分之外，其中储存在贫燃料（即富氧）气氛中的氧可以以受控的量在二氧化铈中以富含燃料的方式从二氧化铈中释放出来 （即，贫氧）气氛，从而可以抑制释放的氧与富含燃料（即贫氧）气氛中的HC和CO反应。 因此，NOx净化性能提高了催化剂。

公开(公告)号：US10850269B2

公开(公告)日：2020-12-01

申请号：US16213324

申请日：2018-12-07

申请人： Atsushi Tanaka ,  Takeru Yoshida ,  Naoto Miyoshi ,  Akemi Sato ,  Yasutaka Nomura ,  Satoru Inoda

发明人： Atsushi Tanaka ,  Takeru Yoshida ,  Naoto Miyoshi ,  Akemi Sato ,  Yasutaka Nomura ,  Satoru Inoda

IPC分类号： B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01J35/04 ,  B01D46/24 ,  B01D53/94 ,  B01J23/10

摘要： The exemplary embodiments relate to an exhaust gas purification catalyst, in which exhaust gas purification performance is secured and an increase in pressure loss is suppressed, which is an exhaust gas purification catalyst, in which a porous filter wall of a substrate having a wall-flow structure is coated with a catalyst material containing an OSC material having oxygen storage capacity and a catalyst metal, wherein the density of percolation paths having percolation path diameters of 4 μm or more per unit area inside of the filter wall coated with the catalyst material is 100 paths/mm2 to 1000 paths/mm2.

公开(公告)号：US20100190640A1

公开(公告)日：2010-07-29

申请号：US12665108

申请日：2008-06-26

申请人： Takeshi Nobukawa ,  Naoto Miyoshi

发明人： Takeshi Nobukawa ,  Naoto Miyoshi

IPC分类号： B01J23/10 ,  B01J32/00 ,  B01J23/42 ,  B01J23/02 ,  B01J21/04

CPC分类号： B01J23/63 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2092 ,  B01D2255/91 ,  B01D2255/9202 ,  B01D2257/404 ,  B01D2258/012 ,  B01J23/10 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1019 ,  B01J37/031 ,  B01J37/04 ,  F01N3/0814 ,  F01N2510/06

摘要： A catalytic support 10 is made of rare-earth-element-oxide fine particles (e.g., ceria fine particles 11) comprising primary particles of a rare-earth element oxide, alumina fine particles 12 comprising primary particles of alumna, and barium-compound fine particles 13 comprising primary particles of a barium compound, rare-earth-element-oxide fine particles, alumina fine particles 12 and barium-compound fine particles 13 which are mixed with each other. A primary particle diameter of the rare-earth-element-oxide fine particles is 5 nm or less, and a primary particle diameter of the barium-compound fine particles 13 is 10 nm or less. Platinum fine particles 20 are supported, of this catalytic support 10, on the rare-earth-element-oxide fine particles virtually. It is possible to suppress the granular growth of platinum, which serves an oxidizing catalyst, and the granular growth of barium, which serves an NOx storage material, more securely.

摘要翻译： 催化剂载体10由包含稀土元素氧化物的一次粒子的氧化锆稀土微粒（例如，二氧化铈微粒11），氧化铝微粒12和氧化钡微粒构成， 包含彼此混合的钡化合物的一次粒子，稀土元素氧化物微粒，氧化铝微粒12和钡化合物微粒13的粒子13。 稀土元素氧化物微粒的一次粒径为5nm以下，钡复合微粒13的一次粒径为10nm以下。 实际上，铂微粒20在该催化载体10上负载在稀土元素氧化物微粒上。 可以更可靠地抑制用于氧化催化剂的铂的粒状生长和用于NOx储存材料的钡的颗粒生长。

公开(公告)号：US20100004123A1

公开(公告)日：2010-01-07

申请号：US12307571

申请日：2007-06-22

申请人： Mareo Kimura ,  Keiichi Narita ,  Akimasa Hirai ,  Akiya Chiba ,  Naoto Miyoshi ,  Kazunobu Ishibashi ,  Takaaki Kanazawa ,  Takeru Yoshida ,  Hirohisa Tanaka ,  Mari Uenishi ,  Isao Tan ,  Masashi Taniguchi

发明人： Mareo Kimura ,  Keiichi Narita ,  Akimasa Hirai ,  Akiya Chiba ,  Naoto Miyoshi ,  Kazunobu Ishibashi ,  Takaaki Kanazawa ,  Takeru Yoshida ,  Hirohisa Tanaka ,  Mari Uenishi ,  Isao Tan ,  Masashi Taniguchi

IPC分类号： B01J23/10

CPC分类号： C01G25/02 ,  B01D53/02 ,  B01D2253/112 ,  B01D2255/407 ,  B01D2256/12 ,  B01D2259/4525 ,  B01J23/002 ,  B01J23/63 ,  B01J2523/00 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/82 ,  C01P2006/12 ,  Y10S502/526 ,  B01J2523/25 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/36

摘要： An excellent oxygen storage capacity is achieved even in the case used for a long period of time under high temperature conditions. An oxygen storage material contains a first particle made of a composite oxide of cerium and zirconium or a composite oxide of cerium, a rare-earth element other than cerium and zirconium, a second particle including a composite oxide of a rare-earth element, an alkaline-earth element and zirconium, and a precious metal. A part of the precious metal forms a solid solution with the composite oxide included in the second particle.

摘要翻译： 即使在高温条件下长时间使用的情况下也能获得极好的储氧能力。 储氧材料包含由铈和锆的复合氧化物制成的第一颗粒或铈，铈和锆以外的稀土元素的复合氧化物，包含稀土元素的复合氧化物的第二颗粒， 碱土元素和锆，以及贵金属。 贵金属的一部分与第二颗粒中包含的复合氧化物形成固溶体。

公开(公告)号：US6119452A

公开(公告)日：2000-09-19

申请号：US68684

申请日：1998-05-13

申请人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Naoto Suzuki ,  Takehisa Yaegashi ,  Toshiaki Tanaka ,  Naoto Miyoshi

发明人： Yukio Kinugasa ,  Kouhei Igarashi ,  Takaaki Itou ,  Naoto Suzuki ,  Takehisa Yaegashi ,  Toshiaki Tanaka ,  Naoto Miyoshi

IPC分类号： B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N13/02 ,  F01N13/04 ,  F02B1/04 ,  F02D41/02 ,  F02D41/14 ,  F01N3/00

CPC分类号： F01N3/2073 ,  B01D53/8696 ,  B01D53/9431 ,  B01D53/9454 ,  B01D53/9495 ,  F01N13/009 ,  F01N13/011 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/20 ,  F01N3/2053 ,  F02D41/027 ,  F02D41/1443 ,  F02D41/1475 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2610/02 ,  F02B1/04 ,  F02D41/0275 ,  Y02T10/22

摘要： A three-way catalyst (8a) is connected to a first cylinder group 1a. The exhaust gas of the first cylinder group (1a), which has passed through the three-way catalyst (8a), and the exhaust gas of a second cylinder group (1b) are introduced to an exhaust gas purifying catalyst (14). The second cylinder group (1b) performs the lean operation. The first cylinder group (1a) performs the rich operation to synthesize NH.sub.3 from NO.sub.X in the exhaust gas of the first cylinder group (1a) in the three-way catalyst (8a). In the exhaust gas purifying catalyst (14), NO.sub.X in the exhaust gas of the second cylinder group 1b is purified by NH.sub.3 from the three-way catalyst (8a). The amount of HC flowing to the three-way catalyst (8a) is obtained. When the HC amount exceeds a predetermined amount, the first cylinder group 1a must perform the lean operation temporarily, to thereby maintain the excellent catalytic activity of the three-way catalyst (8a).

摘要翻译： PCT No.PCT / JP96 / 03288 Sec。 371日期1998年5月13日 102（e）日期1998年5月13日PCT 1996年11月8日PCT PCT。 公开号WO97 / 19261 日期1997年5月29日将三元催化剂（8a）连接到第一气缸组1a。 已经通过三元催化剂（8a）的第一气缸组（1a）的排气和第二气缸组（1b）的排气被引入废气净化催化剂（14）。 第二气缸组（1b）执行精馏操作。 第一气缸组（1a）在三元催化剂（8a）中进行第一气缸组（1a）的排气中的NO x的富NH操作。 在排气净化催化剂（14）中，第三气缸组1b的废气中的NO x从三元催化剂（8a）中被NH 3净化。 获得流向三元催化剂（8a）的HC量。 当HC量超过预定量时，第一气缸组1a必须暂时进行稀薄运转，从而保持三元催化剂（8a）的极好的催化活性。

公开(公告)号：US4927799A

公开(公告)日：1990-05-22

申请号：US290421

申请日：1988-12-27

申请人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Mareo Kimura ,  Masakuni Ozawa ,  Akio Isogai

发明人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Mareo Kimura ,  Masakuni Ozawa ,  Akio Isogai

IPC分类号： B01D53/94 ,  B01J23/10 ,  B01J23/63 ,  B01J23/83 ,  B01J21/06 ,  B01J23/40 ,  B01J23/74

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J23/63 ,  B01J23/83 ,  Y02T10/22

摘要： A catalyst for the purification of exhaust gases comprising a catalyst carrier layer and catalyst ingredients carried thereon, is capable of enhancing the purification property by suppressing the growth of cerium oxide particles and preventing the formation of LaAlO.sub.3. This catalyst has two composition types. One is a binary composition catalyst comprising oxides of cerium and zirconium in the catalyst carrier layer and the other is a ternary composition catalyst comprising oxides of cerium, zirconium and lanthanum in the catalyst carrier layer.

摘要翻译： 用于净化废气的催化剂，其包含催化剂载体层和在其上承载的催化剂成分，能够通过抑制氧化铈颗粒的生长并防止LaAlO 3的形成来提高净化性能。 该催化剂具有两种组成类型。 一种是在催化剂载体层中包含铈和锆的氧化物的二元组合物催化剂，另一种是在催化剂载体层中包含铈，锆和镧的氧化物的三元组成催化剂。

公开(公告)号：US4849398A

公开(公告)日：1989-07-18

申请号：US82533

申请日：1987-08-07

申请人： Toshihiro Takada ,  Shinichi Matsumoto ,  Naoto Miyoshi

发明人： Toshihiro Takada ,  Shinichi Matsumoto ,  Naoto Miyoshi

IPC分类号： B01D53/94 ,  B01J23/54 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J37/02

CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  B01J37/024 ,  Y02T10/22 ,  Y10S502/525

摘要： A catalyst for purifying exhaust gases contains: a catalyst support, a perovskite double oxide comprising at least one alkaline earth metal oxide, lathanum oxide and cerium oxide, carried on the catalyst support, and noble metal catalyst components carried on the catalyst support.The catalyst for purifying exhaust gases according to the present invention offers an improved durability and purifying ratios for carbon monoxide CO, hydrocarbons HC and nitrogen oxides NOx.

摘要翻译： 用于净化废气的催化剂包含：载体在催化剂载体上的催化剂载体，包含至少一种碱土金属氧化物，氧化铟和氧化铈的钙钛矿双氧化物和载于催化剂载体上的贵金属催化剂组分。 根据本发明的用于净化废气的催化剂提供一氧化碳CO，烃HC和氮氧化物NOx的改进的耐久性和净化比。

公开(公告)号：US4843056A

公开(公告)日：1989-06-27

申请号：US164237

申请日：1988-03-04

申请人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Hideaki Muraki ,  Hideo Sobukawa ,  Masayuki Fukui ,  Mareo Kimura ,  Hirofumi Shinjoh

发明人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Hideaki Muraki ,  Hideo Sobukawa ,  Masayuki Fukui ,  Mareo Kimura ,  Hirofumi Shinjoh

IPC分类号： B01D53/94 ,  B01J23/56 ,  B01J23/63

CPC分类号： B01D53/945 ,  B01J23/63 ,  Y02T10/22

摘要： An exhaust gas purifying catalyst for oxidizing HC and CO and for reducing NOx is provided, which comprises at least one oxide of rare earth element, rhodium, and at least one of platinum and palladium loaded on alumina grains. The major amount of rhodium is dispersed on the oxide of rare earth element. Thus, the rhodium solidification into the alumina grains is prevented. Further, when cerium oxide accompanying lanthanum oxide, neodymium oxide or a mixture thereof is used as the oxide of rare earth element, the sintering of cerium oxide or palladium at a high temperature is suppressed since it forms a complex oxide with lanthanum oxide, neodymium oxide or a mixture thereof. Additionally, when stabilized alumina grains in which a rare earth element and an alkali earth element are present in a solid solution state are used, the deterioration of NOx purifying activity of the catalyst at a high temperature is suppressed. The exhaust gas purifying catalyst of this invention has high durability as well as high activity at a high temperature.

摘要翻译： 提供一种用于氧化HC和CO并用于还原NOx的废气净化催化剂，其包含至少一种稀土元素氧化物，铑，以及负载在氧化铝颗粒上的铂和钯中的至少一种。 铑的主要量分散在稀土元素的氧化物上。 因此，防止了铑固化成氧化铝颗粒。 此外，当使用伴随氧化镧，氧化钕或其混合物的氧化铈作为稀土元素的氧化物时，氧化铈或钯在高温下的烧结被抑制，因为它与氧化镧，氧化钕形成复合氧化物 或其混合物。 此外，当使用其中以固溶状态存在稀土元素和碱土金属元素的稳定的氧化铝颗粒时，抑制了催化剂在高温下的NOx净化活性的劣化。 本发明的废气净化催化剂在高温下具有高耐久性和高活性。

公开(公告)号：US11660589B2

公开(公告)日：2023-05-30

申请号：US16864340

申请日：2020-05-01

申请人： Koji Sugiura ,  Hiromasa Nishioka ,  Naoto Miyoshi ,  Akemi Sato ,  Masatoshi Ikebe ,  Ryota Nakashima ,  Yasutaka Nomura ,  Hirotaka Ori

发明人： Koji Sugiura ,  Hiromasa Nishioka ,  Naoto Miyoshi ,  Akemi Sato ,  Masatoshi Ikebe ,  Ryota Nakashima ,  Yasutaka Nomura ,  Hirotaka Ori

IPC分类号： B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J35/04 ,  B01D46/24 ,  B01D53/94 ,  F01N3/08 ,  F01N3/28

CPC分类号： B01J35/04 ,  B01D46/2418 ,  B01D53/94 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  F01N3/0821 ,  F01N3/281 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9155

摘要： An exhaust gas purification device that allows suppressing an increase in pressure loss is provided. The exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. The substrate includes a porous partition wall which defines inflow cells and outflow cells extending from an inflow side end to an outflow side end. The inflow cell side catalyst layer is disposed on a surface on the inflow cell side in an inflow cell side catalyst region from an inflow side end to a position close to an outflow side end of the partition wall. The permeability of a portion including an outflow side region from the position to the outflow side end of the partition wall is higher than a gas permeability of a portion including the inflow cell side catalyst region of the partition wall and the inflow cell side catalyst layer.

公开(公告)号：US07625836B2

公开(公告)日：2009-12-01

申请号：US11792832

申请日：2005-12-13

申请人： Satoshi Matsueda ,  Mareo Kimura ,  Naoto Miyoshi ,  Yoshinori Ishii ,  Hirohisa Tanaka ,  Isao Tan ,  Mari Uenishi ,  Masashi Taniguchi

发明人： Satoshi Matsueda ,  Mareo Kimura ,  Naoto Miyoshi ,  Yoshinori Ishii ,  Hirohisa Tanaka ,  Isao Tan ,  Mari Uenishi ,  Masashi Taniguchi

IPC分类号： B01J21/00 ,  B01J21/02 ,  B01J21/06 ,  B01J21/10 ,  B01J23/00 ,  B01J23/02 ,  B01J23/10 ,  B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/54 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J37/08 ,  C01F3/00 ,  C01F5/00 ,  C01F7/00 ,  C01F11/00 ,  C01F17/00 ,  C01G25/00 ,  C01G25/02 ,  C01G55/00 ,  C01G57/00

CPC分类号： C01G25/006 ,  B01J23/002 ,  B01J23/63 ,  B01J2523/00 ,  C01P2002/52 ,  C01P2006/37 ,  C04B35/486 ,  C04B2235/3205 ,  C04B2235/3213 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3289 ,  C04B2235/3418 ,  C04B2235/441 ,  C04B2235/443 ,  C04B2235/444 ,  F01N3/2803 ,  F01N2370/02 ,  B01J2523/36 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/37

摘要： To provide a heat-resistant oxide which is excellent in heat resistance and durability at high temperature and has high activity, a heat-resistant oxide which has an oxide crystal structure and in which a rate of a solid solution of a noble metal in the oxide crystal structure is 50% or more is obtained by heat-treating (secondarily baking) a precursor composition comprising zirconia, at least one coordinative element selected from the group consisting of rare earth elements, alkaline earth elements, aluminum and silicon, and at least one noble metal selected from the group consisting of platinum, rhodium and palladium at 650° C. or higher.

摘要翻译： 为了提供耐热性和耐高温性优异且活性高的耐热氧化物，具有氧化物结晶结构的耐热氧化物，其中贵金属在氧化物中的固溶率 通过对包含氧化锆的前体组合物进行热处理（二次焙烧），至少一种选自稀土元素，碱土金属元素，铝和硅的配位元素和至少一种配位元素获得的晶体结构为50％以上 选自铂，铑和钯在650℃以上的贵金属。