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41. 发明专利

JP2007260564A Exhaust gas-purifying catalyst and method for regenerating the same 有权
标题翻译：排气净化催化剂及其再生方法
公开(公告)号：JP2007260564A
公开(公告)日：2007-10-11
申请号：JP2006089120
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： HATANAKA YOSHIO , TANABE TOSHITAKA , NAGAI YASUTAKA , YAMAMOTO TOSHIO , DOMAE KAZUHIKO , TAKAGI NOBUYUKI
IPC分类号： B01J23/89 , B01D53/86 , B01D53/94 , B01J23/96 , B01J38/18 , F01N3/10 , F01N3/20
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas-purifying catalyst capable of sufficiently suppressing a coagulation of noble metal particles even if they are exposed to a high-temperature exhaust gas for a long period of time to sufficiently suppress a grain growth of a noble metal for a long period of time, thereby enabling the system to sufficiently suppress the deterioration of a catalytic activity, easily regenerating the catalytic activity by re-dispersing the noble metal that is grain grown when in use, and easily regenerating the catalyst even if the catalyst is mounted on an exhaust system of an internal engine, and to provide a method for regenerating the exhaust gas-purifying catalyst. SOLUTION: The exhaust gas-purifying catalyst having a carrier containing a composite oxide with at least one element selected from a group consisting of zirconia and/or alumina, alkali earth metal element, rare earth element and IIIA group element, a noble metal that is supported in the carrier, and iron that is supported in the carrier, wherein a supported amount of the noble metal should be in a scope of 0.05 to 2 mass% to the mass of the catalyst, and a supported amount of iron should be in a scope of 0.8 to 12 that is mole ratio (amount of iron/amount of noble metal) to the mass of the noble metal in metal conversion. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种能够充分抑制贵金属粒子的凝固的排气净化催化剂，即使它们长时间暴露于高温废气以充分抑制晶粒生长的贵金属，从而使系统能够充分抑制催化活性的劣化，容易再生分解使用时晶粒生长的贵金属，并容易再生催化剂的催化活性即使将催化剂安装在内燃机的排气系统上，也可以提供再生废气净化用催化剂的方法。解决方案：具有载体的废气净化催化剂，该载体含有选自氧化锆和/或氧化铝，碱土金属元素，稀土元素和IIIA族元素中的至少一种元素的复合氧化物，贵金属负载在载体中的金属和负载在载体中的铁，其中贵金属的负载量相对于催化剂的质量应为0.05〜2质量％的范围，并且负载量的铁应该在金属转化中摩尔比（贵金属的量/贵金属的量）与贵金属的质量的摩尔比为0.8〜12的范围。版权所有（C）2008，JPO＆INPIT

42. 发明专利

JP2006036556A Inorganic oxide, exhaust gas purification catalyst support and exhaust gas purification catalyst 有权
标题翻译：无机氧化物，排气净化催化剂支持和排气净化催化剂
公开(公告)号：JP2006036556A
公开(公告)日：2006-02-09
申请号：JP2004214932
申请日：2004-07-22
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： MORIKAWA AKIRA , TANABE TOSHITAKA , YAMAMURA YOSHIE , TAKAHASHI NAOKI , SUZUKI HIROMASA , KUNO HISASHI , SATO AKEMI , ISHIKIRIYAMA MAMORU , KANAZAWA TAKAAKI
IPC分类号： C01G25/00 , B01D53/86 , B01D53/94 , B01J23/10 , B01J23/63 , B01J37/03 , B01J37/08 , F01N3/10
摘要： PROBLEM TO BE SOLVED: To provide an inorganic oxide in which the grain growth of a supported metal (rhodium or the like) is satisfactorily suppressed, an exhaust gas purification catalyst support comprising the same and an exhaust gas purification catalyst using the same. SOLUTION: In the particulate inorganic oxide containing aluminum oxide, a metal oxide which does not form a compound oxide with aluminum oxide and an additive element comprising at least one of a rare earth element and an alkaline earth element, the content of aluminum oxide is 15-40 mol% per total quantity of aluminum in the aluminum oxide, a metal element in the metal oxide and the additive element, ≥80% of the primary particle of the inorganic oxide has ≤100 nm particle diameter and at least a part of the primary particle has a surface layer part having a concentrated zone where the content of the additive element is locally increased. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供令人满意地抑制负载金属（铑等）的晶粒生长的无机氧化物，包含该负载金属的铑等的废气净化催化剂载体和使用其的废气净化催化剂。解决方案：在含氧化铝的颗粒状无机氧化物中，不与氧化铝形成复合氧化物的金属氧化物和包含稀土元素和碱土金属元素中的至少一种的添加元素，铝的含量氧化铝中的铝的总量为15〜40摩尔％，金属氧化物中的金属元素和添加元素的≥80％的无机氧化物的一次粒子的粒径≤100nm，至少为初级颗粒的一部分具有表面层部分，其具有局部增加添加元素的含量的浓缩区域。版权所有（C）2006，JPO＆NCIPI

43. 发明专利

JP2004074055A Method of forming catalyst carrying layer 审中-公开
公开(公告)号：JP2004074055A
公开(公告)日：2004-03-11
申请号：JP2002239471
申请日：2002-08-20
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： TAMURA HIROSHI , ITO YUSUKE , KUNO HISASHI , SOFUGAWA HIDEO , MATSUNAGA SHINICHI , TANABE TOSHITAKA
IPC分类号： F01N3/28 , B01D53/86 , B01J23/42 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To provide a method of forming a catalyst carrying layer without requiring a high temperature baking which is apt to induce decrease in performance. SOLUTION: In the method of forming a catalyst carrying layer, powder soluble in one of an organic solvent, an acid solvent or a basic solvent and hardly soluble or insoluble in water is added to a slurry for formation of a catalyst carrying layer, and then the slurry is applied onto a monolithic carrier, dried, and thereafter the carrier is immersed in a solvent in which the powder is soluble to elute and remove the powder. COPYRIGHT: (C)2004,JPO

44. 发明专利

JP2008023483A Catalyst for purifying exhaust gas, its manufacturing method and its regenerating method 有权
标题翻译：用于净化排气的催化剂及其制备方法及其再生方法
公开(公告)号：JP2008023483A
公开(公告)日：2008-02-07
申请号：JP2006200843
申请日：2006-07-24
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： B01J23/58 , B01J23/96 , B01J38/18
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for purifying exhaust gas, the deterioration of whose activity can be restrained by restraining the grain growth of a noble metal even if the catalyst for purifying exhaust gas is exposed in high-temperature exhaust gas for a long time and which can be regenerated by breaking up the grain-grown noble metal again into satisfactorily minute particles. SOLUTION: The catalyst for purifying exhaust gas comprises: a compound oxide particle A which consists of a metal oxide containing alumina at least and a first basic oxide, that is deposited on the surface of the metal oxide and contains at least one element selected from the group consisting of alkaline-earth metallic elements, rare earth elements and 3A group elements, and in which the amount of the first basic oxide to be deposited on the metal oxide is 0.1-30 mass%; another compound oxide particle B consisting of zirconia and a second basic oxide containing at least one element selected from the group consisting of alkaline-earth metallic elements, rare earth elements and 3A group elements; an additional component which is deposited on the compound oxide particle B and contains at least one element selected from the group consisting of alkaline-earth metallic elements, rare earth elements and 3A group elements; and the noble metal deposited on the compound oxide particle B at least. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于净化废气的催化剂，即使在废气净化用催化剂暴露于高温废气中的情况下，也可以通过抑制贵金属的晶粒生长来抑制其活性的劣化长时间并且可以通过将晶粒生长的贵金属再次分解成令人满意的微小颗粒而再生。解决方案：用于净化废气的催化剂包括：复合氧化物颗粒A，其由至少含有氧化铝的金属氧化物和第一碱性氧化物组成，其沉积在金属氧化物的表面上并且含有至少一种元素选自碱土金属元素，稀土元素和3A族元素，其中沉积在金属氧化物上的第一碱性氧化物的量为0.1-30质量％; 由氧化锆和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的第二碱性氧化物构成的复合氧化物粒子B; 沉积在复合氧化物颗粒B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的附加成分; 以及至少沉积在复合氧化物粒子B上的贵金属。版权所有（C）2008，JPO＆INPIT

45. 发明专利

JP2007289920A Exhaust-gas cleaning catalyst, its regeneration method, exhaust-gas cleaning apparatus and exhaust-gas cleaning method using it 有权
标题翻译：排气清洁催化剂，其再生方法，排气清洁装置和使用其的排气清洁方法
公开(公告)号：JP2007289920A
公开(公告)日：2007-11-08
申请号：JP2006325206
申请日：2006-12-01
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： NAGAI YASUTAKA , TANABE TOSHITAKA , DOMAE KAZUHIKO , HATANAKA YOSHIO , YAMAMOTO TOSHIO , TAKAGI NOBUYUKI , MIURA MASAHIDE , IKEDA YASUO
IPC分类号： B01J23/63 , B01D53/94 , B01J23/58 , B01J23/89 , B01J38/02 , B01J38/10 , B01J38/12 , F01N3/10 , F01N3/20
CPC分类号： Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide an exhaust-gas cleaning catalyst which can fully control aggregation of particles of a noble metal to fully control growth of particles of the noble metal for a long time even if exposed to an exhaust gas of high temperature for a long time and re-distribute particles of the noble metal in a short time to easily regenerate the catalyst activity even if in a comparatively low-temperature range when growing of the particles in its using. SOLUTION: The exhaust-gas cleaning catalyst has the noble metal supported by an oxide carrier, under oxidation atmosphere, the noble metal is on the surface of the carrier in higher oxidation state and also the noble metal has a surface oxide layer which is formed by binding with an cation of the carrier through oxygen of the surface of the carrier, and also under reduction atmosphere, wherein the noble metal is on the surface of the carrier in a metallic state and also the ratio of an amount of the noble metal exposed on the surface of the carrier, which is measured by the CO chemical adsorption method, is 10% or more by atomic ratio for the total amount of the noble metal supported by the carrier. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种废气清洁催化剂，其可以完全控制贵金属颗粒的聚集，以便即使暴露于高的废气也能够长时间地控制贵金属颗粒的生长温度长时间并且在短时间内重新分配贵金属的颗粒，以便即使在使用中生长颗粒时在相对低的温度范围内也容易再生催化剂活性。解决方案：废气清洁催化剂具有由氧化物载体担载的贵金属，在氧化气氛下，贵金属处于较高氧化态的载体表面，贵金属也具有表面氧化层，是通过载体表面的氧和还原气氛与载体的阳离子结合形成的，其中贵金属处于金属状态的载体表面上，还有贵金属的量的比例通过CO化学吸附法测定的载体表面露出的金属，由载体负载的贵金属的总量的原子比为10％以上。版权所有（C）2008，JPO＆INPIT

46. 发明专利

JP2007268460A Metal oxide catalyst carrier particle, and exhaust gas purification catalyst 审中-公开
标题翻译：金属氧化物催化剂载体颗粒和排气净化催化剂
公开(公告)号：JP2007268460A
公开(公告)日：2007-10-18
申请号：JP2006098730
申请日：2006-03-31
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： MIURA MASAHIDE , TAKAGI NOBUYUKI , MATSUMOTO SHINICHI , TANABE TOSHITAKA , NAGAI YASUTAKA , DOMAE KAZUHIKO , IKEDA YASUO
IPC分类号： B01J23/63 , B01D53/86 , B01D53/94 , B01J23/96 , B01J35/10 , B01J37/03 , B01J37/08 , B01J37/16 , B01J38/12 , F01N3/10
CPC分类号： B01J37/0221 , B01D53/945 , B01D2255/206 , B01J23/63 , B01J35/008 , B01J35/026 , B01J35/10 , B01J35/1014 , B01J37/0234 , Y02T10/22 , Y10T428/2991
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst enabling a good redistribution processing of platinum, a platinum redistribution processing method by such the exhaust gas purification catalyst, and a metal oxide catalyst carrier particle capable of obtaining such the exhaust gas purification catalyst and its manufacturing method. SOLUTION: The metal oxide catalyst carrier particle contains a first and a second metal oxides, and has different compositions in the central portion and the outer coat portion. In the metal oxide catalyst carrier particle, the mol fraction of a metal constituting the first metal oxide in the central portion is higher than that of the metal constituting the first metal oxide in the outer coat portion and the mol fraction of a metal constituting the second metal oxide in the outer coat portion is higher than that of the metal constituting the second metal oxide in the central portion, and the second metal oxide is selected from a group consisting of oxides of alkaline earth metals and rare earths excluding ceria. The exhaust gas purification catalyst comprises the metal oxide catalyst carrier particle supporting platinum. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够进行铂的良好再分配处理的废气净化催化剂，通过这种废气净化催化剂的铂再分配处理方法和能够获得这样的废气的金属氧化物催化剂载体颗粒净化催化剂及其制备方法。解决方案：金属氧化物催化剂载体颗粒包含第一和第二金属氧化物，并且在中心部分和外涂层部分中具有不同的组成。在金属氧化物催化剂载体颗粒中，构成中心部分的第一金属氧化物的金属的摩尔分数高于外涂层中构成第一金属氧化物的金属的摩尔分数，构成第二金属的金属的摩尔分数外涂层部分中的金属氧化物比构成中心部分的第二金属氧化物的金属高，第二金属氧化物选自碱土金属和除二氧化铈以外的稀土的氧化物。排气净化催化剂包含负载铂的金属氧化物催化剂载体颗粒。版权所有（C）2008，JPO＆INPIT

47. 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

48. 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

49. 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

50. 发明专利

JP2006055836A Inorganic oxide, catalyst carrier for purifying exhaust, and catalyst for purifying exhaust 有权
标题翻译：无机氧化物，用于净化排气的催化剂载体和用于净化排气的催化剂
公开(公告)号：JP2006055836A
公开(公告)日：2006-03-02
申请号：JP2005182266
申请日：2005-06-22
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： MORIKAWA AKIRA , TANABE TOSHITAKA , YAMAMURA YOSHIE , TAKAHASHI NAOKI , SUZUKI HIROMASA , KUNO HISASHI , SATO AKEMI , ISHIKIRIYAMA MAMORU , KANAZAWA TAKAAKI
IPC分类号： B01J23/63 , B01D53/94 , B01J32/00 , B01J37/03
摘要： PROBLEM TO BE SOLVED: To provide an inorganic oxide by which the particle growth of a carried metal (e.g., rhodium) is sufficiently suppressed, a catalyst carrier for purifying exhaust comprising such inorganic oxide, and a catalyst for purifying exhaust using it. SOLUTION: The inorganic oxide is in the form of particles and contains an aluminum oxide, a metal oxide not forming a composite oxide with such aluminum oxide, and an additional element comprising at least either a rare earth element and an alkaline earth element, wherein the proportion (in terms of the amount of the oxide) of the additional element contained is 1.5 to 5.6 mol.% with relation to the total amount of the additional element, the aluminum, and the above metal oxide, 80% or more of primary particles of the inorganic oxide has a particle size of 100 nm or less, and at least a part of primary particles have a surface concentrated region where the proportion of the additional element contained is locally increased in such surface layer part. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：为了提供充分抑制载体金属（例如铑）的颗粒生长的无机氧化物，包含这种无机氧化物的用于净化废气的催化剂载体和使用其净化排气的催化剂。解决方案：无机氧化物为颗粒形式，并含有氧化铝，不与这种氧化铝形成复合氧化物的金属氧化物，以及包含稀土元素和碱土金属元素中的至少一种的附加元素其中，相对于添加元素的总量，铝和上述金属氧化物，所含的添加元素的比例（以氧化物的量计）为1.5〜5.6摩尔％，为80质量％以上的无机氧化物的一次粒子的粒径为100nm以下，并且至少一部分一次粒子具有表面浓缩区域，其中所含的附加元素的比例在该表面层部分局部增加。版权所有（C）2006，JPO＆NCIPI

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