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11. 发明专利

JP2004216223A Nox occlusion reduction type catalyst 审中-公开
公开(公告)号：JP2004216223A
公开(公告)日：2004-08-05
申请号：JP2003004302
申请日：2003-01-10
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： MATSUNAGA SHINICHI , TANAKA TOSHIYUKI
IPC分类号： F01N3/08 , B01D53/94 , B01J27/185 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To suppress the lowering of a NOx occlusion capacity caused by the increase of temperature by suppressing the temperature increase of a catalyst layer after rich spike. SOLUTION: A temperature controlling material whose specific heat is higher than that of carrier powder is incorporated into a coat layer. The temperature change of the coat layer itself is controlled, and even when the temperature of a minute part in a catalyst during rich spike is increased in a short time, the heat is absorbed by the temperature controlling material to suppress the temperature increase of the whole catalyst. Therefore, the lowering of the NOx occlusion capacity by the increase of temperature in the following lean atmosphere is suppressed so that a high NOx occlusion capacity is developed. COPYRIGHT: (C)2004,JPO&NCIPI

12. 发明专利

JP2003299967A Catalyst carrier structure body and exhaust gas cleaning catalyst 审中-公开
标题翻译：催化剂结构体和排气清洁催化剂
公开(公告)号：JP2003299967A
公开(公告)日：2003-10-21
申请号：JP2002102674
申请日：2002-04-04
申请人： Toyota Central Res & Dev Lab Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社豊田中央研究所
发明人： ITO YUSUKE , TAMURA HIROSHI , KUNO HISASHI , SUDA AKIHIKO , MATSUNAGA SHINICHI , TAKAHASHI NAOKI
IPC分类号： F01N3/10 , B01D53/94 , B01J23/10 , B01J23/63 , B01J32/00 , B01J37/02 , C01G25/00
CPC分类号： B01D53/945 , B01D2255/407 , B01D2255/9022 , Y02T10/22
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas cleaning catalyst exhibiting a high exhaust gas treatment function even under a condition that the exhaust gas composition is fluctuated. SOLUTION: The catalyst carrier structure comprises a monolith substrate coated with a cerium-zirconium compounded oxide layer and the layer is composed of at least 2 layers; the upper layer of a cerium-zirconium compounded oxide with 1/1 or higher Ce/Zr mole ratio and a lower layer of a cerium- zirconium compounded oxide with a Ce/Zr mole ratio lower than that of the upper layer. Preferably, the layer is composed of the upper layer of a cerium- zirconium compounded oxide with a Ce/Zr mole ratio of 1/1 to 6/1 and the lower layer of a cerium-zirconium compounded oxide with a Ce/Zr mole ratio of 2/3 to 3/2. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：即使在废气组成波动的条件下，也提供具有高排气处理功能的废气净化催化剂。解决方案：催化剂载体结构包括涂覆有铈锆复合氧化物层的整体基底，该层由至少2层组成; Ce / Zr摩尔比为1/1以上的铈锆复合氧化物的上层和Ce / Zr摩尔比低于上层的铈锆复合氧化物的下层。优选地，该层由Ce / Zr摩尔比为1/1至6/1的铈锆复合氧化物的上层和Ce / Zr摩尔比的铈 - 锆复合氧化物的下层组成为2/3至3/2。版权所有（C）2004，JPO

13. 发明专利

JP2000262898A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2000262898A
公开(公告)日：2000-09-26
申请号：JP28962299
申请日：1999-10-12
申请人： TOYOTA CENTRAL RES & DEV
发明人： TERAO NAOHIRO , MATSUNAGA SHINICHI , SUDA AKIHIKO , HATANAKA YOSHIO , KAMITORI TOSHIO , SOFUGAWA HIDEO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/63
摘要： PROBLEM TO BE SOLVED: To improve heat resistance by controlling the growth of noble metal particles in a catalyst for purifying exhaust gas in which the noble metal is supported on a carrier containing zirconia by providing the carrier containing at least one kind of oxide of a rare earth element excluding cerium and zirconia and the noble metal supported on the carrier. SOLUTION: A carrier of a catalyst for purifying exhaust gas is formed from at least one kind of oxide of a rare earth element excluding cerium and zirconia. By mixing the oxide with zirconia, the growth of noble metal particles can be controlled to improve heat resistance even when used at a high temperature. As the rare earth element excluding cerium, yttrium (Y) indicates particularly excellent effects. The atomic ratio of the rare earth element to zirconium in the carrier is preferably 0.1/0.9-0.9/0.1. As the noble metal supported on the carrier is preferably Pt high in activity.

14. 发明专利

JP2000140648A CATALYST AND ITS PRODUCTION 失效
公开(公告)号：JP2000140648A
公开(公告)日：2000-05-23
申请号：JP31506598
申请日：1998-11-05
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： GOTO YASUTOMO , INAGAKI SHINJI , FUKUSHIMA YOSHIAKI , MATSUNAGA SHINICHI , SOFUGAWA HIDEO , KIMURA MAREO , KANAZAWA TAKAAKI
IPC分类号： B01D53/94 , B01J21/08 , B01J23/42 , B01J23/46 , B01J32/00 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To provide a catalyst high in catalytic activity and excellent in durability. SOLUTION: This catalyst is provided with a carrier with a broken face formed by mechanically or chemically breaking a honeycomb silica porous body having 1-10 nm pore diameter synthesized by using an alkoxysilane and a catalytic metal deposited on the carrier surface. Since the catalytic metal is deposited on the broken face of the honeycomb silica porous body, the grain growth of the catalytic metal is suppressed, and the catalytic activity is maintained.

15. 发明专利

JPH09177544A CATALYST DETERIORATION DETERMINING DEVICE 失效
公开(公告)号：JPH09177544A
公开(公告)日：1997-07-08
申请号：JP16199996
申请日：1996-06-21
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： TANAHASHI TOSHIO , SANADA MASAKATSU , YOKOTA KOJI , MATSUNAGA SHINICHI , SOFUGAWA HIDEO , MOTOI ICHIRO , SUZUKI TADASHI
IPC分类号： F02D45/00 , F01N3/20 , F01N11/00
摘要： PROBLEM TO BE SOLVED: To accurately determine the deterioration of a catalyst by calculating the progress degree of the deterioration of the catalyst within a period predetermined based on the temperature of the catalyst and an oxygen content in exhaust gas, integrating the progress degree of the deterioration and determining the deterioration of the catalyst from the integrated value. SOLUTION: When the deterioration of a ternary catalyst 10 is to be determined, first the temperature of the catalyst is calculated from the output signal of a temperature sensor 16 in an electronic control unit 20 and then an oxygen content is calculated from the output signal of an air-fuel ratio sensor 15. Then, the progress degree D of deterioration caused by poison contamination is calculated per unit time from a map and a deteriorating speed K is calculated from the map based on the temperature of the catalyst and the oxygen content. Then, by multiplying the sum between the deteriorating speed K and the deterioration degree D by an interruption time interval Δt, the deterioration progress degree S of the catalyst within the interruption time internal is calculated, integrated, determination is made as to whether this integrated value exceeds the predetermined fixed value S0 or not and if the answer is YES, the deterioration of the ternary catalyst 10 is determined.

16. 发明专利

JPH0724319A EXHAUST GAS PURIFYING CATALYST FOR ALCOHOL FUEL INTERNAL COMBUSTION ENGINE AND PRODUCTION THEREOF 失效
公开(公告)号：JPH0724319A
公开(公告)日：1995-01-27
申请号：JP19901093
申请日：1993-07-16
申请人： TOYOTA CENTRAL RES & DEV
发明人： MATSUNAGA SHINICHI , DOMAE KAZUHIKO , MIZUTANI YORIKO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/50
摘要： PURPOSE:To obtain a catalyst capable of purifying formaldehyde, methanol, carbon monoxide and hydrocarbon in the exhaust gas of an alcohol fuel internal combustion engine at a specific low temp. with a high purifying efficiency. CONSTITUTION:An exhaust gas purifying catalyst for an alcohol fuel internal combustion engine is constituted by uniformly supporting silver on the surfaces of the pores of a porous carrier and produced by heat-treating the porous carrier having silver supported thereon in an atmosphere wherein oxidizing and reducing atmospheres are alternately changed.

17. 发明专利

JP2007252996A Exhaust gas purification catalyst and exhaust gas purification method using the same 有权
标题翻译：排气净化催化剂和使用其的排气净化方法
公开(公告)号：JP2007252996A
公开(公告)日：2007-10-04
申请号：JP2006077886
申请日：2006-03-21
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： IMAGAWA HARUO , TANAKA TOSHIYUKI , MATSUNAGA SHINICHI
IPC分类号： B01J23/58 , B01D53/94 , F01N3/08 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst capable of sufficiently suppressing NO x leakage subsequent to rich spike and having excellent thermal durability and resistance to sulfur poisoning, and an exhaust gas purification method using the same. SOLUTION: The exhaust gas purification catalyst is constituted of a mixed powder comprised of a first powder comprising complex oxide particles containing at least one oxide selected from the group consisting of titania, alumina, zirconia, silica and silica-alumina and rhodium supported by the complex oxide particles and a second powder comprising porous support particles by which rhodium is not supported; at least one NO x occlusion material selected from the group consisting of an alkali metal, an alkaline-earth metal and a rare-earth element each supported by the mixed powder; and a noble metal supported by the mixed power other than rhodium. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种排气净化催化剂，其能够充分抑制富穗后的NOS / SB>泄漏，并且具有优异的耐热性和耐硫中毒性，以及废气净化方法使用相同废气净化催化剂由包含由选自二氧化钛，氧化铝，氧化锆，二氧化硅和二氧化硅 - 氧化铝组成的组中选择的至少一种氧化物的复合氧化物颗粒的第一粉末和负载了铑的混合粉末构成由复合氧化物颗粒和包含不支持铑的多孔载体颗粒的第二粉末; 选自由混合粉末支撑的碱金属，碱土金属和稀土元素组成的组中的至少一种NO x SB x阻塞材料; 以及由铑以外的混合动力支撑的贵金属。版权所有（C）2008，JPO＆INPIT

18. 发明专利

JP2005060147A AQUEOUS SOLUTION OF COMPOUND OXIDE PRECURSOR AND METHOD FOR CARRYING NOx OCCLUSION MATERIAL 有权
标题翻译：复合氧化物前体的水溶液和携带NOx氧化物质的方法
公开(公告)号：JP2005060147A
公开(公告)日：2005-03-10
申请号：JP2003290304
申请日：2003-08-08
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： TANAKA TOSHIYUKI , ITAHARA HIROSHI , MATSUNAGA SHINICHI
IPC分类号： B01D53/94 , B01J23/58 , C01G23/00
摘要： PROBLEM TO BE SOLVED: To improve stability and to carry an NO x occlusion material in fine and highly dispersed state. SOLUTION: Hydrogen peroxide is added to an aqueous solution of a compound oxide precursor comprising a first compound containing at least one kind of element selected from alkali metals, alkaline earth metals and rare earth elements, a second compound containing at least one kind of element selected from group 3 elements, group 4 elements and transition metals, and a third compound having a multidentate ligand. It is supposed that, by coordinating hydrogen peroxide in the complex made of the second compound and the third compound, the reaction between the complex and the ion of the first compound is suppressed and proceeding of gelation is suppressed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提高稳定性并且以精细和高度分散的状态携带NO x 阻塞材料。解决方案：将过氧化氢加入到复合氧化物前体的水溶液中，所述复合氧化物前体包含含有选自碱金属，碱土金属和稀土元素中的至少一种元素的第一化合物，含有至少一种的元素，第4族元素和过渡金属，以及具有多齿配体的第三种化合物。假设通过在由第二化合物和第三化合物制成的络合物中配位过氧化氢，可以抑制复合物与第一化合物的离子之间的反应并抑制凝胶化的进行。版权所有（C）2005，JPO＆NCIPI

19. 发明专利

JP2002253968A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2002253968A
公开(公告)日：2002-09-10
申请号：JP2001057994
申请日：2001-03-02
申请人： TOYOTA CENTRAL RES & DEV
发明人： SAIKI MOTOHISA , MATSUNAGA SHINICHI , TSUJI RYUSUKE , SUDA AKIHIKO
IPC分类号： F01N3/08 , B01D53/56 , B01D53/81 , B01D53/86 , B01D53/94 , B01J23/40 , B01J23/58 , B01J23/63 , B01J35/10 , B01J37/00 , B01J37/02 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To support a noble metal easily up to the inside of a coating layer and to make the increase of the NOx storage quantity at the time of a lean state and the high efficient reduction and purification of the storage NOx by a short rich spike time compatible by diffusing a reaction gas in a gas phase up to the inside of the coating layer to increase the reaction probability. SOLUTION: The coating layer, in which the pore volume of fine pore having 0.1-20 μm pore diameter occupies >=50% of the pore volume of fine pore having =20% of the pore volume of fine pore having

20. 发明专利

JP2002191988A CATALYST FOR CLEANING EXHAUST GAS 失效
公开(公告)号：JP2002191988A
公开(公告)日：2002-07-10
申请号：JP2000392666
申请日：2000-12-25
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： SAIKI MOTOHISA , MATSUNAGA SHINICHI , TSUJI RYUSUKE , HACHISUGA ICHIRO , SENDA KOJI
IPC分类号： F01N3/08 , B01D53/94 , B01J23/58 , B01J35/10 , F01N3/18 , F01N3/20 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To efficiently reduce and clean occluded NOx by short-time rich spiking. SOLUTION: The pores of a coat layer are formed so that pores with a pore size of 0.1-20 μm occupy 60% or more of the whole pore volume and pores with a pore size of 10-20 μm occupy 20% or more of the whole pore volume. The pore size of the pores of the coat layer become 10-2,000 times as compared with a conventional coat layer and the diffusion speed of gas through the pores also becomes 10-2,000 times. Therefore, exhaust gas can reach the interior of the coat layer even by short-time rich spiking. Since a noble metal chemical solution is infiltrated into the pores, a noble metal can be supported on the coat layer up to the interior thereof.

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