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41.
公开(公告)号:US5242883A
公开(公告)日:1993-09-07
申请号:US943530
申请日:1992-09-11
IPC分类号: B01D53/94 , B01J23/42 , B01J23/46 , B01J23/72 , B01J23/74 , B01J23/75 , B01J35/10 , B01J37/00 , B01J37/02 , B01J37/03
CPC分类号: B01J37/036 , B01D53/9418 , B01J37/0018 , B01J37/0236 , B01D2251/208 , B01D2255/1021 , B01D2255/1025 , B01D2255/20746 , B01D2255/20761
摘要: In an exhaust gas disposable catalyst which is a .gamma.-alumina catalyst prepared by sol-gel process, .gamma.-alumina has more than 300 m.sup.2 /g specific surface area and the catalyst element is supported on the .gamma.-alumina and dispersed in pores thereof. The exhaust gas disposable catalyst is obtained by adding the catalyst element as a solution of salt before gelating in sol-gel process.
摘要翻译: 在通过溶胶 - 凝胶法制备的γ-氧化铝催化剂的废气一次性催化剂中,γ-氧化铝具有超过300m 2 / g的比表面积,催化剂元素负载在γ-氧化铝上并分散在其孔中。 废气一次性催化剂通过在溶胶 - 凝胶法中在凝胶化之前加入催化剂元素作为盐溶液而获得。
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公开(公告)号:US20070167320A1
公开(公告)日:2007-07-19
申请号:US11646398
申请日:2006-12-28
IPC分类号: B01J23/10
CPC分类号: B01D53/945 , B01D2255/1025 , B01D2255/407 , B01D2255/908 , B01J21/066 , B01J23/002 , B01J23/10 , B01J23/63 , B01J35/08 , B01J37/0018 , B01J37/0045 , B01J37/0248 , B01J2523/00 , F01N3/2828 , Y02T10/22 , B01J2523/3712 , B01J2523/48 , B01J2523/822 , B01J2523/22
摘要: Disclosed is an exhaust gas purifying catalyst, which comprises a CeZr-based composite oxide capable of maintaining a hollow structure to ensure an oxygen absorbing/releasing capability, even after being exposed to high-temperature exhaust gas. The exhaust gas purifying catalyst comprises a honeycomb-shaped substrate, and a catalyst layer formed on a surface of the substrate. The catalyst layer contains a composite oxide which includes cerium (Ce) and zirconium (Zr) and has a hollow structure, and a catalytic metal supported by the composite oxide. The composite oxide having the hollow structure includes, in a state after being subjected to a thermal aging in Air at 1000° C. for 24 hours, a particle with a shape having an outer diameter of 750 to 1000 nm and a shell thickness of 80 to 120 nm.
摘要翻译: 公开了一种废气净化催化剂,其包括能够保持中空结构以确保氧吸收/释放能力的CeZr基复合氧化物,即使在暴露于高温废气之后。 废气净化催化剂包括蜂窝状基材和形成在基材表面上的催化剂层。 催化剂层含有包含铈(Ce)和锆(Zr)并具有中空结构的复合氧化物和由复合氧化物负载的催化金属。 具有中空结构的复合氧化物在空气中在1000℃下经受热老化24小时后的状态包括形状为外径为750〜1000nm,外壳厚度为80的颗粒 至120nm。
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公开(公告)号:US5958826A
公开(公告)日:1999-09-28
申请号:US895880
申请日:1997-07-17
申请人: Takahiro Kurokawa , Akihide Takami , Makoto Kyogoku , Hideharu Iwakuni , Kenji Okamoto , Hirosuke Sumida , Kenichi Yamamoto , Hiroshi Murakami
发明人: Takahiro Kurokawa , Akihide Takami , Makoto Kyogoku , Hideharu Iwakuni , Kenji Okamoto , Hirosuke Sumida , Kenichi Yamamoto , Hiroshi Murakami
IPC分类号: F01N3/10 , B01D53/26 , B01D53/86 , B01D53/94 , B01J23/38 , B01J23/44 , B01J23/56 , B01J23/58 , B01J23/63 , B01J29/068 , B01J29/44 , B01J37/02 , F01N3/08 , F01N3/24 , F01N3/28 , B01J23/00 , B01J23/42 , B01D50/00
CPC分类号: B01D53/945 , B01D53/261 , B01J23/58 , B01J23/63 , B01J37/0244 , F01N3/0814 , F01N3/0835 , F01N3/0842 , B01D2255/902 , F01N2250/12 , F01N2570/14 , Y02T10/22
摘要: An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.
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公开(公告)号:US5571763A
公开(公告)日:1996-11-05
申请号:US71020
申请日:1993-06-02
申请人: Takashi Takemoto , Yasuto Watanabe , Akihide Takami , Hideharu Iwakuni , Makoto Kyogoku , Kazunari Komatsu
发明人: Takashi Takemoto , Yasuto Watanabe , Akihide Takami , Hideharu Iwakuni , Makoto Kyogoku , Kazunari Komatsu
CPC分类号: B01D53/945 , B01J23/464 , B01D2255/102 , Y02T10/22
摘要: An engine exhaust gas purifying catalyst contains, as active substances, platinum and at least one of iridium, III-B metals and IV-B metals. In particular, the catalyst contains mainly platinum and iridium and, desirably, rhodium as an additive catalyst substance.
摘要翻译: 发动机废气净化催化剂含有铂和铱,III-B金属和IV-B金属中的至少一种作为活性物质。 特别地,催化剂主要含有铂和铱,并且理想地含有作为添加剂催化剂物质的铑。
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公开(公告)号:US5489561A
公开(公告)日:1996-02-06
申请号:US186928
申请日:1994-01-27
CPC分类号: B01D53/945 , B01D53/9418 , B01D2255/1021 , B01D2255/1028 , B01D2255/2027 , B01D2255/2073 , Y02T10/22
摘要: An exhaust gas purifying catalyst includes a metal-containing silicate and a noble metal active species carried by the metal-containing silicate. The metal-containing silicate has a solid acid characteristic wherein the amount of acid within a region where an acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr. The noble metal active species burns an hydrocarbon component of exhaust gases to decompose an NOx component also contained in the exhaust gases. The catalyst may include a binder for carrying the noble metal active species on the metal-containing silicate. The binder has a solid acid characteristic wherein the amount of acid within a region where the acidity function Ho is equal to or smaller than -3.0 ranges from 0.04 to 0.55 mmol/gr.
摘要翻译: 废气净化催化剂包括含金属的硅酸盐和由含金属的硅酸盐承载的贵金属活性物质。 含金属的硅酸盐具有固体酸特性,其中酸度函数Ho等于或小于-3.0的区域内的酸的量在0.04至0.55mmol / gr的范围内。 贵金属活性物质燃烧废气的烃成分以分解废气中也含有的NOx成分。 催化剂可以包括用于在含金属的硅酸盐上承载贵金属活性物质的粘合剂。 粘合剂具有固体酸特性,其中酸度函数Ho等于或小于-3.0的区域内的酸的量在0.04至0.55mmol / gr的范围内。
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公开(公告)号:US5795840A
公开(公告)日:1998-08-18
申请号:US638751
申请日:1996-04-29
IPC分类号: F01N3/10 , B01D53/26 , B01D53/86 , B01D53/94 , B01J21/16 , B01J23/44 , B01J23/56 , B01J23/58 , B01J23/63 , B01J29/068 , B01J29/44 , B01J37/02 , F01N3/08 , F01N3/24 , B01J23/40 , B01J21/00 , B01D50/00
CPC分类号: B01D53/945 , B01J23/58 , B01J23/63 , B01J37/0244 , F01N3/0814 , F01N3/0835 , F01N3/0842 , B01D2255/9022 , F01N2250/12 , F01N2570/14 , Y02T10/22
摘要: An exhaust gas emission control catalyst includes an under catalyst layer containing catalyst particles of platinum and rhodium and a crystalline metal silicate support for supporting the catalyst particles and an over catalyst layer, coated on the under catalyst layer, containing catalyst particles of palladium.
摘要翻译: 排气排放控制催化剂包括含有铂和铑催化剂颗粒的底催化剂层和用于负载催化剂颗粒的结晶金属硅酸盐载体和涂覆在催化剂层上的含催化剂颗粒的催化剂层。
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47.
公开(公告)号:US5700747A
公开(公告)日:1997-12-23
申请号:US533819
申请日:1995-09-25
申请人: Makoto Kyogoku , Hideharu Iwakuni , Akihide Takami
发明人: Makoto Kyogoku , Hideharu Iwakuni , Akihide Takami
IPC分类号: B01D53/86 , B01D53/94 , B01J29/068 , B01J29/42 , B01J29/06
CPC分类号: B01J29/068
摘要: An object is to elevate the NOx cleaning rate and heat resistance of an exhaust gas cleaning catalyst complex which comprises a noble metal catalyst supported on zeolite. Ni is supported in the form of NiO powder on said zeolite. Said NiO acts as a cocatalyst without the coverage of the activation site of the catalyst complex and closure of the gas passage by said NiO so as to elevate the NOx cleaning rate and heat resistance.
摘要翻译: 目的在于提高负载在沸石上的贵金属催化剂的排气净化催化剂配合物的NOx净化率和耐热性。 Ni在所述沸石上以NiO粉末的形式负载。 所述NiO充当助催化剂,而不需要催化剂络合物的活化部位的覆盖和所述NiO封闭气体通道,从而提高NOx清洗率和耐热性。
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公开(公告)号:US20060217263A1
公开(公告)日:2006-09-28
申请号:US11371000
申请日:2006-03-09
申请人: Tomohiko Kawamoto , Katsuyuki Fujita , Tadashi Tokuyama , Hisaya Kawabata , Masahiko Shigetsu , Masaaki Akamine , Akihide Takami
发明人: Tomohiko Kawamoto , Katsuyuki Fujita , Tadashi Tokuyama , Hisaya Kawabata , Masahiko Shigetsu , Masaaki Akamine , Akihide Takami
IPC分类号: B01J23/10
CPC分类号: B01J35/0006 , B01D53/945 , B01J23/04 , B01J23/10 , B01J23/63 , B01J37/0244 , B01J37/0248 , Y02T10/22
摘要: In an exhaust gas purification catalyst in which a catalytic coating containing plural kinds of aluminas and plural kinds of oxygen storage components each carrying a catalytic precious metal is coated on a honeycomb support, the catalytic coating is formed of an upper layer and a lower layer, palladium is carried on a first alumina and a Ce—Zr—La—Y-alumina compound having oxygen storage capacity in the lower layer, platinum is carried on a second alumina in the upper layer, and rhodium is carried on a third alumina and a Ce—Zr—Nd mixed oxide having oxygen storage capacity in the upper layer.
摘要翻译: 在其中将含有多种氧化铝的催化剂涂层和各种携带催化贵金属的多种储氧组分涂覆在蜂窝状载体上的废气净化催化剂中,催化涂层由上层和下层形成, 钯在第一氧化铝和具有储氧能力的Ce-Zr-La-Y-氧化铝化合物的下层中承载,铂在上层被承载在第二氧化铝上,铑承载在第三氧化铝上, 在上层具有储氧能力的Ce-Zr-Nd混合氧化物。
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公开(公告)号:US08051646B2
公开(公告)日:2011-11-08
申请号:US12502728
申请日:2009-07-14
申请人: Koichiro Harada , Hiroshi Yamada , Akihide Takami
发明人: Koichiro Harada , Hiroshi Yamada , Akihide Takami
IPC分类号: F01N3/00
CPC分类号: F02D41/029 , B01D53/944 , B01D53/9495 , B01D2251/208 , B01D2255/1021 , B01D2255/20715 , B01D2255/2092 , B01D2258/012 , B01D2258/014 , F02D41/025 , F02D41/1446 , F02D41/1448 , F02D41/405 , F02D2200/0812
摘要: Disclosed is a particulate filter regenerating system which comprises a fuel injection device (7) adapted to inject fuel into a combustion chamber of an engine body (1), and an exhaust gas temperature-adjusting device (33) adapted, when a PM deposit amount which is an amount of particulate matter (PM) deposited in a DPF (particulate filter) 13 provided in an exhaust passage of an engine, reaches a predetermined value X, to cause the fuel injection device (7) to perform a post-injection for injecting fuel into the combustion chamber during an expansion stroke of the engine, so as to execute a filter regeneration process of raising a temperature of exhaust gas flowing into the DPF 13 to burn the deposited PM. The exhaust gas temperature-adjusting device (33) is operable to cause the fuel injection device (7) to stop performing the post-injection in a stage where a PM burning amount which is an amount of PM burned through the filter regeneration process, is less than an initial PM deposit amount which is the PM deposit amount X at a timing of initiation of the filter regeneration process, by a predetermined amount. The particulate filter regenerating system of the present invention can adequately burn and remove PM deposited in a particulate filter, by means of a post-injection of fuel, while effectively suppressing a fuel consumption due to the post-injection.
摘要翻译: 公开了一种微粒过滤器再生系统,其包括适于将燃料喷射到发动机主体(1)的燃烧室中的燃料喷射装置(7),以及排气温度调节装置(33),当PM沉积量 其是沉积在设置在发动机的排气通道中的DPF(微粒过滤器)13中的颗粒物质(PM)的量达到预定值X,以使燃料喷射装置(7)执行后喷射 在发动机的膨胀冲程期间将燃料喷射到燃烧室中,以便执行提高流入DPF 13的废气的温度以便燃烧沉积的PM的过滤器再生过程。 废气温度调节装置(33)可操作以使得燃料喷射装置(7)在通过过滤器再生处理燃烧的PM的PM燃烧量是PM燃烧量的阶段中停止执行后喷射 小于在过滤器再生处理开始时刻的PM沉积量X的初始PM沉积量预定量。 本发明的颗粒过滤器再生系统可以通过后喷射燃料来充分地燃烧和去除沉积在微粒过滤器中的PM,同时有效地抑制由于后喷射引起的燃料消耗。
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公开(公告)号:US20090241495A1
公开(公告)日:2009-10-01
申请号:US12396117
申请日:2009-03-02
申请人: Hiroshi Yamada , Koichiro Harada , Kenji Suzuki , Kenji Okamoto , Akihide Takami
发明人: Hiroshi Yamada , Koichiro Harada , Kenji Suzuki , Kenji Okamoto , Akihide Takami
CPC分类号: B01D46/247 , B01D46/2451 , B01D46/2455 , B01D46/2459 , B01D2046/2481 , B01D2046/2485 , B01D2046/2496 , B01D2279/30 , F01N3/0222 , Y02T10/20 , Y10S55/30 , Y10T428/24149
摘要: Disclosed is a particulate filter 10, which comprises a filter body 8 including a plurality of filter segments F1, F2 joined to each other by a joining material 7, wherein each of the filter segments includes a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, and a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction. The filter segments include a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells, and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells. The present invention can keep the central region of the particulate filter from becoming overheated during a particulate-filter regeneration process, while suppressing a pressure loss.
摘要翻译: 公开了一种微粒过滤器10,其包括过滤体8,其包括通过接合材料7彼此连接的多个过滤器段F1,F2,其中每个过滤段包括多个流入单元,每个流入单元各自具有封闭端 排气流动方向的下游侧,以及在排气流动方向的上游侧具有封闭端的多个流出电池。 过滤器段包括位于颗粒过滤器的中心区域中的第一过滤器段,并被设计成形成每个流入单元以具有与每个流出单元的开口面积大致相等的开口面积,以及位于 所述颗粒过滤器的外周区域的至少一部分被设计成形成每个所述流入单元以具有大于每个所述流出单元的开口面积。 本发明可以在颗粒过滤器再生过程中保持颗粒过滤器的中心区域变得过热,同时抑制压力损失。
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