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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
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。
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公开(公告)号:US5075276A
公开(公告)日:1991-12-24
申请号:US342060
申请日:1989-04-24
申请人: Masakuni Ozawa , Mareo Kimura , Akio Isogai , Shinichi Matsumoto , Naoto Miyoshi
发明人: Masakuni Ozawa , Mareo Kimura , Akio Isogai , Shinichi Matsumoto , Naoto Miyoshi
IPC分类号: B01D53/94 , B01J23/10 , B01J23/56 , B01J23/63 , B01J23/83 , B01J32/00 , B01J37/02 , B32B18/00
CPC分类号: B01D53/945 , B01J23/63 , B01J23/83 , B01J37/024 , B01D2255/206 , B01D2255/20715 , B01D2255/40 , Y02T10/22
摘要: A catalyst for purification of exhaust gases, comprising a support substrate, a catalyst carrier layer formed on the support substrate and catalyst ingredients loaded on the catalyst carrier layer, wherein the catalyst carrier layer comprises alumina, cerium oxide, zirconium oxide and at least one oxide of rare earth element except cerium and lanthanum, and at least a part of cerium oxide, zirconium oxide and oxide of rare earth element except cerium and lanthanum is present in the form of composite oxide and/or solid solution. The catalyst for purification of exhaust gases is capable of purifying exhaust gases containing carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx).
摘要翻译: 一种用于净化废气的催化剂,包括支撑基材,形成在载体基材上的催化剂载体层和负载在催化剂载体层上的催化剂成分,其中催化剂载体层包含氧化铝,氧化铈,氧化锆和至少一种氧化物 除了铈和镧以外的稀土元素,除了铈和镧以外,至少一部分氧化铈,氧化锆和稀土元素的氧化物以复合氧化物和/或固溶体的形式存在。 用于净化废气的催化剂能够净化含有一氧化碳(CO),碳氢化合物(HC)和氮氧化物(NOx)的废气。
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公开(公告)号:US4722920A
公开(公告)日:1988-02-02
申请号:US10533
申请日:1987-02-03
申请人: Mareo Kimura , Masakuni Ozawa , Akio Isogai
发明人: Mareo Kimura , Masakuni Ozawa , Akio Isogai
CPC分类号: B01D53/945 , B01J21/04 , B01J35/002 , B01J35/1014 , Y02T10/22
摘要: An alumina catalyst support stable at high temperatures comprises transformative alumina having a purity not less than 99.95% impregnated with lanthanum in an amount of 1.5 to 6 wt % based on the weight of the alumina. The alumina catalyst support has a surface area of at least 60 m.sup.2 /g after heating at 1200.degree. C. for 5 hours.
摘要翻译: 在高温下稳定的氧化铝催化剂载体包括基于氧化铝重量,以1.5至6重量%的量浸渍有镧的纯度不低于99.95%的变性氧化铝。 氧化铝催化剂载体在1200℃加热5小时后的表面积至少为60m 2 / g。
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公开(公告)号:US4921829A
公开(公告)日:1990-05-01
申请号:US287019
申请日:1988-12-21
申请人: Masakuni Ozawa , Mareo Kimura , Akio Isogai
发明人: Masakuni Ozawa , Mareo Kimura , Akio Isogai
IPC分类号: B01D53/94 , B01J23/64 , B01J23/656 , B01J23/89 , B01J37/04
CPC分类号: B01D53/945 , B01J23/8946 , B01J37/04 , Y02T10/22 , Y10S502/525
摘要: A catalyst for purifying exhaust gases comprises: a perovskite-type complex oxide represented by the general formula Ln.sub.1-x A.sub.x MO.sub.3, wherein Ln represents at least one rare earth metal, A presents at least one alkaline earth metal and M represents at least one transition metal, and 0
摘要翻译: 用于净化废气的催化剂包括:由通式Ln1-xAxMO3表示的钙钛矿型复合氧化物,其中Ln表示至少一种稀土金属,A表示至少一种碱土金属,M表示至少一种过渡金属, 和0
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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
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。
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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。
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公开(公告)号:US08993475B2
公开(公告)日:2015-03-31
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
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实现极好的储氧能力。 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。
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公开(公告)号:US07498288B2
公开(公告)日:2009-03-03
申请号:US11057902
申请日:2005-02-14
申请人: Satoshi Matsueda , Mareo Kimura , Naoto Miyoshi
发明人: Satoshi Matsueda , Mareo Kimura , Naoto Miyoshi
IPC分类号: B01J21/06 , B01J23/00 , B01J23/02 , B01J23/10 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/56 , B01J23/58 , B01J23/63 , B01J37/08
CPC分类号: B01D53/945 , B01J23/002 , B01J23/464 , B01J23/58 , B01J23/63 , B01J37/0009 , B01J37/0205 , B01J37/0207 , B01J37/0248 , B01J37/08 , B01J2523/00 , Y02T10/22 , B01J2523/3706 , B01J2523/48 , B01J2523/822 , B01J2523/828 , B01J2523/824 , B01J2523/31 , B01J2523/3712
摘要: An exhaust gas-purifying catalyst includes a support and a catalyst active component including at least one noble metal supported by at least a portion of the support. The support includes a stabilized zirconia containing at least one stabilizing element selected from rare earth elements and alkaline earth elements. 20 to 80% by weight of a total amount of the active component is supported in the support in a form of solid solution with the stabilized zirconia, and 80 to 20% by weight of a total amount of the active component is supported on a surface of at least a portion of the support.
摘要翻译: 废气净化催化剂包括载体和包含至少一种由至少一部分载体负载的贵金属的催化剂活性组分。 载体包括稳定的氧化锆,其含有至少一种选自稀土元素和碱土金属元素的稳定元素。 活性成分总量的20〜80重量%以稳定化的氧化锆的固溶体的形式负载在载体上,活性成分的总量的80〜20重量%负载在表面 的至少一部分支撑件。
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公开(公告)号:US20100298132A1
公开(公告)日:2010-11-25
申请号:US12848796
申请日:2010-08-02
申请人: Satoshi Matsueda , Mareo Kimura , Akiya Chiba , Hiroki Nagashima , Naoto Miyoshi , Kazunobu Ishibashi , Takaaki Kanazawa
发明人: Satoshi Matsueda , Mareo Kimura , Akiya Chiba , Hiroki Nagashima , Naoto Miyoshi , Kazunobu Ishibashi , Takaaki Kanazawa
IPC分类号: B01J23/10
CPC分类号: B01J23/63 , B01D53/9445 , B01D53/945 , B01D2255/10 , B01D2255/204 , B01D2255/206 , B01D2255/20715 , B01D2255/40 , B01J23/002 , B01J23/10 , B01J35/1014 , B01J37/0205 , B01J37/03 , B01J37/08 , B01J2523/00 , Y02T10/22 , B01J2523/25 , B01J2523/3712 , B01J2523/48 , B01J2523/828 , B01J2523/3706 , B01J2523/3718 , B01J2523/37
摘要: An exhaust gas-purifying catalyst (1) contains a rare-earth element, an alkaline-earth element, zirconium and a precious metal, an atomic ratio of the alkaline-earth element with respect to the sum of the rare-earth element and the zirconium is equal to 0.1 atomic % or higher and lower than 10 atomic %, a part of the rare-earth element, a part of the zirconium and at least a part of the alkaline-earth element forming a composite oxide, and the composite oxide and a part of precious metal forming a solid solution.
摘要翻译: 废气净化催化剂(1)含有稀土元素,碱土金属元素,锆和贵金属,碱土元素的原子比相对于稀土元素和 锆等于0.1原子%以上且低于10原子%,一部分稀土元素,一部分锆和至少一部分形成复合氧化物的碱土金属的复合氧化物 和一部分贵金属形成固溶体。
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公开(公告)号:US20080318770A1
公开(公告)日:2008-12-25
申请号:US11794794
申请日:2006-06-14
申请人: Satoshi Matsueda , Mareo Kimura , Akiya Chiba , Hiroki Nagashima , Naoto Miyoshi , Kazunobu Ishibashi , Takaaki Kanazawa
发明人: Satoshi Matsueda , Mareo Kimura , Akiya Chiba , Hiroki Nagashima , Naoto Miyoshi , Kazunobu Ishibashi , Takaaki Kanazawa
CPC分类号: B01J23/63 , B01D53/9445 , B01D53/945 , B01D2255/10 , B01D2255/204 , B01D2255/206 , B01D2255/20715 , B01D2255/40 , B01J23/002 , B01J23/10 , B01J35/1014 , B01J37/0205 , B01J37/03 , B01J37/08 , B01J2523/00 , Y02T10/22 , B01J2523/25 , B01J2523/3712 , B01J2523/48 , B01J2523/828 , B01J2523/3706 , B01J2523/3718 , B01J2523/37
摘要: An exhaust gas-purifying catalyst (1) contains a rare-earth element, an alkaline-earth element, zirconium and a precious metal, an atomic ratio of the alkaline-earth element with respect to the sum of the rare-earth element and the zirconium is equal to 0.1 atomic % or higher and lower than 10 atomic %, a part of the rare-earth element, a part of the zirconium and at least a part of the alkaline-earth element forming a composite oxide, and the composite oxide and a part of precious metal forming a solid solution.
摘要翻译: 废气净化催化剂(1)含有稀土元素,碱土金属元素,锆和贵金属,碱土元素的原子比相对于稀土元素和 锆等于0.1原子%以上且低于10原子%,一部分稀土元素,一部分锆和至少一部分形成复合氧化物的碱土金属的复合氧化物 和一部分贵金属形成固溶体。
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