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1. 发明专利

JP2007289921A Exhaust-gas cleaning catalyst and its regeneration method 有权
标题翻译：排气净化催化剂及其再生方法
公开(公告)号：JP2007289921A
公开(公告)日：2007-11-08
申请号：JP2006351446
申请日：2006-12-27
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： HATANAKA YOSHIO , TANABE TOSHITAKA , NAGAI YASUTAKA , YAMAMOTO TOSHIO , DOMAE KAZUHIKO , TAKAGI NOBUYUKI , MIURA MASAHIDE , IKEDA YASUO
IPC分类号： B01J23/63 , B01D53/86 , B01D53/94 , B01J23/58 , B01J23/96 , B01J35/10 , F01N3/18
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust-gas cleaning catalyst and a generation method of the exhaust-gas cleaning catalyst, which can fully control growth of particles of a noble metal to fully control a deterioration in the catalyst activity even if exposed to an exhaust gas of high temperature for a long time and also re-distribute the noble metal to easily regenerate the catalyst activity so that the catalyst activity per unit amount of the supported noble metal is fully high and the excellent catalyst activity is displayed even if a growth of the particles of the noble metal in its use. SOLUTION: The exhaust-gas cleaning catalyst has a carrier of fluorite type structure containing a composite oxide of Zr and at least one metallic element which is chosen from a group consisting of a rare earth element and an alkaline earth metal element, and also contains Ce, and the noble metal supported by the carrier, wherein the amount of metallic element contained in the carrier is in the range of 51-75 mol% by metal conversion for the carrier and the amount of Ce contained in metallic element is 90 mol% or more by metal conversion for metallic element. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供排气净化催化剂和废气净化催化剂的生成方法，其可以完全控制贵金属的颗粒的生长，以完全控制催化剂活性的劣化，即使长时间暴露于高温废气，并且还重新分配贵金属以容易地再生催化剂活性，使得每单位量的负载型贵金属的催化剂活性高，并且甚至显示出优异的催化剂活性如果贵金属的颗粒在其使用中生长。废气净化催化剂具有含有Zr的复合氧化物和选自由稀土元素和碱土金属元素组成的组中的至少一种金属元素的萤石型结构的载体，以及还含有Ce和由载体担载的贵金属，其中载体中所含的金属元素的量通过金属转化为载体的51-75mol％，金属元素中所含的Ce的量为90 mol％以上金属元素的金属转化率。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2001000863A WASTE GAS PURIFYING CATALYST AND WASTE GAS PURIFYING METHOD USING THE CATALYST 失效
公开(公告)号：JP2001000863A
公开(公告)日：2001-01-09
申请号：JP2000006033
申请日：2000-01-11
申请人： TOYOTA MOTOR CORP
发明人： NAKANO YASUAKI , UENO HIDEAKI , IKEDA YASUO , HIRAYAMA HIROSHI
IPC分类号： B01D53/94 , B01J20/04 , B01J23/58 , B01J23/63 , F01N3/08 , F01N3/10 , F01N3/20 , F01N3/28 , F02D41/04
摘要： PROBLEM TO BE SOLVED: To further improve the durability of a waste gas purifying catalyst of the NOx occluding and reducing type by suppressing the sulfur poisoning of an NOx occluding material. SOLUTION: The waste gas purifying catalyst of the NOx occluding and reducing type is divided into a first catalyst positioned on the upstream side of a waste gas and a second catalyst on the downstream side. The NOx occluding material to be deposited on the first catalyst adsorbs sulfur more easily and detaches sulfur more difficultly than the NOx occluding material to be deposited on the second catalyst. Further, a space is left between the first catalyst and second catalyst to further enhance the NOx occluding capacity.

3. 发明专利

JP2000342966A CATALYST FOR PURIFYING EXHAUST GAS AND METHOD FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2000342966A
公开(公告)日：2000-12-12
申请号：JP16091799
申请日：1999-06-08
申请人： TOYOTA MOTOR CORP , CATALER CORP
发明人： IKEDA YASUO , HAYASHI KIYOTAKA , MURATA KATSUYUKI
IPC分类号： B01D53/94 , B01J23/58
摘要： PROBLEM TO BE SOLVED: To suppress sulfur poisoning of a NOx occlusion-reduction type catalyst for purifying exhaust gas, and to improve a NOx purification rate after enduring at high temperatures. SOLUTION: A catalyst carrying layer comprises a porous oxide such as alumina, and high heat-resistant titania having an improved heat-resisting property. Since the grain growth of the titania is inhibited even after enduring at high temperatures, the decrease in the number and area of interfaces between the grain and the porous oxide such alumina is prevented. Thereby, the number and area of the interfaces can be each kept at a level equal to that of an initial stage even after enduring at high temperatures, thus preventing sulfur poisoning of a NOx occlusion material present in the interfaces.

4. 发明专利

JP2000279810A CATALYST FOR CLEANING OF EXHAUST GAS 失效
公开(公告)号：JP2000279810A
公开(公告)日：2000-10-10
申请号：JP8901199
申请日：1999-03-30
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI , UENO HIDEAKI , IKEDA YASUO , SENDA KOJI
IPC分类号： B01D53/94 , B01J23/54 , B01J23/58 , F01N3/08 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To improve durability by controlling a drop of a NOx-occluding capacity in the case of using an alkali metal as a NOx-occluding element. SOLUTION: This catalyst contains a base material, a catalyst-carrying layer covered on a surface of the base material, and a noble metal and an alkali metal which are supported by the catalyst-carrying layer. In this case, silicon is contained in a porous oxide particle of the catalyst-carrying layer. The alkali metal is allowed to react with the silicon and held in the catalyst- carrying layer. Thereby, the alkali metal is inhibited from transferring into a cordierite-made base material.

5. 发明专利

JPH10225636A WASTE GAS PURIFYING CATALYST 失效
公开(公告)号：JPH10225636A
公开(公告)日：1998-08-25
申请号：JP3089897
申请日：1997-02-14
申请人： TOYOTA MOTOR CORP
发明人： IKEDA YASUO , HIRATA HIROTO
IPC分类号： B01D53/86 , B01D53/94 , B01J20/18 , B01J23/46 , B01J29/12 , B01J29/22 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To further improve the rate of reduction purification of NOx even in the waste gas of lean atmosphere by allowing a first powder carrying Rh on the porous grain and provided with an HC adsorbent in the vicinity and a second powder carrying Pt and an NOx occluding material on the porous grain to coexist in the catalyst. SOLUTION: Since an HC adsorbent 1 is provided close to a first powder 1 carrying Rh 11 on a porous grain 10, the HC even in the waster gas of lean atmosphere as well as in that of rich atmosphere is absorbed, the adsorbed HC is discharged, and NOx are reduced by the hydrogen generated by the reaction of HC with steam on the first powder 1 under the catalysis of Rh 11. As the sulfur-poisoned NOx occluding material and SOx are reduced by the hydrogen, the NOx occluding material is restored, further sulfur positioning is not caused, and the NOx purifying capacity is remarkably improved. The HC and CO are oxidized and purified by by Pt 20 in the lean atmosphere, the NO in the waste gas is simultaneously oxidized into NOx which are occluded in the NOx colluding material, and the discharge of NOx is remarkably reduced.

6. 发明专利

JP2007292066A Exhaust gas purification system 审中-公开
标题翻译：排气净化系统
公开(公告)号：JP2007292066A
公开(公告)日：2007-11-08
申请号：JP2007092348
申请日：2007-03-30
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： TAKAGI NOBUYUKI , MIURA MASAHIDE , MATSUMOTO SHINICHI , IKEDA YASUO , TANABE TOSHITAKA , NAGAI YASUTAKA , DOMAE KAZUHIKO , HATANAKA YOSHIO , YAMAMOTO TOSHIO
IPC分类号： F01N3/22 , B01D53/86 , B01D53/94 , B01J23/42 , B01J23/96 , B01J38/12 , F01N3/10 , F01N3/20
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purification system without reducing a NOx purification ratio even when regenerating a catalyst. SOLUTION: The exhaust gas purification system has an oxygen supply means arranged in an exhaust gas flow passage of an internal combustion engine, a carrier for containing a basic oxide disposed in parallel by at least two, and a regenerable catalyst including platinum carried in the carrier. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使在再生催化剂时也不会降低NOx净化率来提供废气净化系统。解决方案：废气净化系统具有设置在内燃机的排气流动通道中的供氧装置，用于容纳至少两个平行设置的碱性氧化物的载体和包含铂的可再生催化剂在承运人版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007260568A Catalyst for controlling exhaust gas and its regenerating method 有权
标题翻译：用于控制排气的催化剂及其再生方法
公开(公告)号：JP2007260568A
公开(公告)日：2007-10-11
申请号：JP2006089190
申请日：2006-03-28
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： TANABE TOSHITAKA , NAGAI YASUTAKA , HATANAKA YOSHIO , DOMAE KAZUHIKO , YAMAMOTO TOSHIO , TAKAGI NOBUYUKI , IKEDA YASUO
IPC分类号： B01J23/63 , B01D53/94 , B01D53/96 , B01J23/96 , B01J38/12 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for controlling exhaust gas, the activity of which can be recovered by redistributing a platinum particle, which is exposed to high-temperature exhaust gas for a long time and the grain of which is grown, into minute platinum particles in a short time even in a comparatively low temperature range and to provide a method for regenerating the catalyst for controlling exhaust gas. SOLUTION: The catalyst for controlling exhaust gas is provided with: a first catalyst layer comprising a first carrier containing a first multiple oxide of zirconia and/or alumina and at least one element, which is selected from the group consisting of alkaline-earth metal elements, rare earth elements and group 3A elements and contains cerium, and platinum deposited on the first carrier; and a second catalyst layer which comprises a second carrier containing a second multiple oxide of zirconia and/or alumina and at least one element selected from the group consisting of alkaline-earth metal elements, rare earth elements other than cerium and group 3A elements, and platinum deposited on the second carrier and which is arranged on the surface layer side of the first catalyst layer. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于控制废气的催化剂，其活性可以通过重新分配长时间暴露于高温废气并且其晶粒生长的铂颗粒来回收即使在相当低的温度范围内也能在短时间内变成微小的铂颗粒，并且提供一种用于再生用于控制废气的催化剂的方法。解决方案：用于控制废气的催化剂具有：第一催化剂层，其包含含有氧化锆和/或氧化铝的第一多重氧化物和/或氧化铝的第一载体和至少一种元素，所述第一载体选自碱 - 土金属元素，稀土元素和3A族元素，并含有铈，铂沉积在第一载体上; 以及第二催化剂层，其包含含有氧化锆和/或氧化铝的第二多重氧化物的第二载体和选自碱土金属元素，除铈和3A族元素之外的稀土元素中的至少一种元素，以及铂沉积在第二载体上并且布置在第一催化剂层的表面层侧。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007260567A Catalyst for purifying exhaust gas and its regenerating method 有权
标题翻译：用于净化排气的催化剂及其再生方法
公开(公告)号：JP2007260567A
公开(公告)日：2007-10-11
申请号：JP2006089177
申请日：2006-03-28
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： YAMAMOTO TOSHIO , NAGAI YASUTAKA , TANABE TOSHITAKA , HATANAKA YOSHIO , DOMAE KAZUHIKO , TAKAGI NOBUYUKI , MIURA MASAHIDE , IKEDA YASUO
IPC分类号： B01J23/56 , B01D53/94 , B01D53/96 , B01J23/89 , B01J23/96 , B01J38/12 , F01N3/10 , F01N3/20
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for purifying exhaust gas, in which a noble metal particle is restrained from being agglomerated even when the catalyst is exposed to high-temperature exhaust gas for a long time, in the grain-grown one of which a noble metal is dispersed again in a short time in a low temperature range to regenerate the grain-grown catalyst and which can be regenerated in such a state that the catalyst is mounted in an exhaust gas system of an internal-combustion engine and to provide a method for regenerating the catalyst. SOLUTION: The catalyst for purifying exhaust gas is provided with: a carrier containing a multiple oxide of zirconia and/or alumina and at least one element selected from the group consisting of alkaline-earth metal elements, rare earth elements and group 3A elements; a noble metal deposited on the carrier; and an additional component which is deposited on the carrier and contains at least one element selected from the group consisting of alkaline-earth metal elements, rare earth elements and group 3A elements. The catalyst for controlling exhaust gas is characterized in that the amount of the noble metal to be deposited is within 0.05-2 mass% of the catalyst and the molar ratio of (the amount of the additional component to be deposited)/(the amount of the noble metal to be deposited) in terms of metals is within 0.5-20. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供即使当催化剂长时间暴露于高温废气时也抑制贵金属颗粒聚集的废气净化催化剂，在谷物生长中其中一种贵金属在短时间内再次分散在低温范围内以再生晶粒生长的催化剂，并且可以在催化剂安装在内燃机的排气系统中的状态下再生并提供催化剂再生的方法。解决方案：用于净化废气的催化剂具有：含有氧化锆和/或氧化铝的多重氧化物的载体和选自碱土金属元素，稀土元素和3A族中的至少一种元素要素; 沉积在载体上的贵金属; 以及另外的成分，其沉积在载体上并含有选自碱土金属元素，稀土元素和3A族元素中的至少一种元素。用于控制废气的催化剂的特征在于，待沉积的贵金属的量在催化剂的0.05-2质量％内，（待附加成分的添加量）/（催化剂的添加量要沉积的贵金属）在0.5-20以内。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2000140638A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2000140638A
公开(公告)日：2000-05-23
申请号：JP35787198
申请日：1998-12-16
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： HACHISUGA ICHIRO , IKEDA YASUO , SOFUE YUICHI , TANAKA TOSHIYUKI , ANDOU CHIWA , TAKAHASHI NAOKI
IPC分类号： B01D53/94 , B01J20/08 , B01J21/16 , B01J23/46 , B01J23/58 , B01J23/63 , B01J23/652 , B01J33/00
摘要： PROBLEM TO BE SOLVED: To further improve NOx reducibility of a catalyst contg. a multiple oxide of MgO.Al2O3 or the like as a carrier and to maintain stable NOx purifying property of the catalyst even after it is used at high temp. SOLUTION: This catalyst contains both of a catalyst A, in which a NOx occluding material element is deposited on a carrier contg. a multiple oxide expressed by MO.nAl2O3, and a catalyst B, in which a novel metal is deposited on a carrier contg. a refractory other than MO.Al2O3. Reduction of a specific surface area or reduction of NOx occluding property of the first carrier can be prevented by effect of the catalyst A even if it is used at a high temp. region, and high NOx reducibility is maintained by effect of the catalyst B even if it is used at a high temp. region. Therefore durability of NOx purifying property is improved by coexisting both of the catalyst.

10. 发明专利

JP2000015101A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2000015101A
公开(公告)日：2000-01-18
申请号：JP18464898
申请日：1998-06-30
申请人： TOYOTA MOTOR CORP , CATALER KK
发明人： IKEDA YASUO , HIRAYAMA HIROSHI , HAYASHI KIYOTAKA , MURATA KATSUYUKI
IPC分类号： B01D53/56 , B01D53/81 , B01D53/94 , B01J23/58 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To suppress the sulfur poisoning of an NOx occluding material and to improve NOx purifying efficiency by forming a coated layer consisting of a porous oxide carrier carrying the NOx occluding material and a noble metal on the surface of a honeycomb shaped carrier base material and also forming another coated layer consisting of Rh/ZrO2. SOLUTION: The coated layer 2 consisting of the porous oxide carrier carrying respectively the NOx occluding material consisting of at least one kind selected among an alkali metal, an alkaline earth metal and a rare earth element and the noble metal is formed on the whole surface of a monolithic base material 1 formed in a form of the honeycomb. Then, another coated layer 3 consisting of Rh/ZrO2 carrying the rhodium on the zirconia is formed on the surface of the coated layer 2 within a prescribed range (for example 3.2% of total length) from an influent gas side end surface 10 of the monolithic base material 1. At this time, the coated layer 2 is formed mainly, for example, with Al2O3 powder and TiO2 powder and carries CeO2-ZrO2 composite oxide powder, Pt, Ba, K and Li.

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