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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: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: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: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:US4957896A
公开(公告)日:1990-09-18
申请号:US323691
申请日:1989-03-15
申请人: Shinichi Matsumoto , Toru Tanaka , Yutaka Ishikawa , Shinji Matsuura , Hirofumi Shinjoh , Masakuni Ozawa
发明人: Shinichi Matsumoto , Toru Tanaka , Yutaka Ishikawa , Shinji Matsuura , Hirofumi Shinjoh , Masakuni Ozawa
CPC分类号: B01D53/945 , B01J23/63 , B01J23/83 , B01J23/892 , B01J23/894 , B01J37/024 , B01J35/006 , Y02T10/22
摘要: A catalyst for purification of exhaust gases comprising: a support substrate; an active alumina coating layer comprising at least one of nickel oxide and cobalt oxide formed on the surface of the support substrate; a composite oxide comprising cerium oxide and zirconium oxide formed in the active alumina coating layer; and noble metal catalyst ingredients comprising at least one of platinum, palladium and rhodium loaded on the active alumina coating layer. The catalyst offers a decreased hydrogen sulfide H.sub.2 S emission and conversion ratios for hydrocarbon (HC), carbon monoxide (CO), and nitrogen oxides (NOx) equivalent to or superior to those of conventional catalysts.
摘要翻译: 一种用于净化废气的催化剂,包括:支撑基板; 活性氧化铝涂层,其包含在所述载体基材的表面上形成的氧化镍和氧化钴中的至少一种; 包含在活性氧化铝涂层中形成的氧化铈和氧化锆的复合氧化物; 以及包含负载在活性氧化铝涂层上的铂,钯和铑中的至少一种的贵金属催化剂成分。 催化剂提供与常规催化剂相当或优于其他烃(HC),一氧化碳(CO)和氮氧化物(NOx))的硫化氢H2S排放和转化率的降低。
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