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1. 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

2. 发明专利

JP2007331992A Inorganic oxide and exhaust gas cleaning catalyst using the same 有权
标题翻译：无氧氧化物和排气使用相同的气体清洁催化剂
公开(公告)号：JP2007331992A
公开(公告)日：2007-12-27
申请号：JP2006167111
申请日：2006-06-16
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 , TAKAHASHI NAOKI , YAMAMURA YOSHIE , YOSHIDA TAKESHI , SATO AKEMI
IPC分类号： C01G25/00 , B01D53/86 , B01J23/63
CPC分类号： C01B13/363 , B01D53/945 , B01D2255/202 , B01D2255/204 , B01D2255/206 , B01D2255/40 , B01D2255/407 , B01J23/002 , B01J23/58 , B01J23/63 , B01J35/023 , B01J37/0201 , B01J37/031 , B01J2523/00 , B82Y30/00 , C01G23/047 , C01G25/02 , C01P2002/50 , C01P2002/52 , C01P2004/04 , C01P2004/64 , C01P2006/32 , Y02T10/22 , B01J2523/31 , B01J2523/3725 , B01J2523/48 , B01J2523/3706
摘要： PROBLEM TO BE SOLVED: To provide an inorganic oxide having excellent heat resistance. SOLUTION: The particulate inorganic oxide contains aluminum oxide, a metal oxide which does not form a compound oxide with aluminum oxide, and at least one additional element selected from the group composed of rare earth elements and alkaline-earth elements. This inorganic oxide is characterized in that the content of the aluminum oxide is 48-92 atomic% of the total amount of aluminum of the aluminum oxide, a metallic element of the metal oxide and the additional element in terms of elements, ≥80% of primary particles of the inorganic oxide have each ≤100 nm particle size, at least a part of the primary particle of the inorganic oxide has an additional element-concentrated surface zone, where the content of the additional element is made higher locally, in the surface layer, and the amount of the additional element in the additional element-concentrated surface zone is 0.06-0.98 mass% of the total amount of the inorganic oxide in terms of oxides. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供耐热性优异的无机氧化物。解决方案：颗粒无机氧化物含有氧化铝，不与氧化铝形成复合氧化物的金属氧化物和至少一种选自稀土元素和碱土金属元素的附加元素。该无机氧化物的特征在于，氧化铝的含量为氧化铝的铝总量的48-92原子％，金属氧化物的金属元素和元素的附加元素的含量≥80％无机氧化物的一次颗粒具有≤100nm的粒度，无机氧化物的一次粒子的至少一部分具有附加元素浓缩表面区域，其中附加元素的含量在局部变得更高，在表面附加元素浓缩表面区域中的附加元素的量为氧化物换算为无机氧化物总量的0.06〜0.98质量％。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007331991A Inorganic oxide and exhaust gas cleaning catalyst using the same 有权
标题翻译：无氧氧化物和排气使用相同的气体清洁催化剂
公开(公告)号：JP2007331991A
公开(公告)日：2007-12-27
申请号：JP2006167110
申请日：2006-06-16
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 , TAKAHASHI NAOKI , YAMAMURA YOSHIE , YOSHIDA TAKESHI , SATO AKEMI
IPC分类号： C01G25/00 , B01D53/94 , B01J23/63
CPC分类号： C01B13/363 , B01D53/945 , B01D2255/204 , B01D2255/206 , B01D2255/40 , B01D2255/407 , B01J23/002 , B01J23/63 , B01J35/002 , B01J35/023 , B01J2523/00 , C01G25/02 , Y02T10/22 , B01J2523/31 , B01J2523/3706 , B01J2523/3725 , B01J2523/48 , B01J2523/822
摘要： PROBLEM TO BE SOLVED: To provide an inorganic oxide having excellent heat resistance. SOLUTION: The particulate inorganic oxide contains aluminum oxide, a metal oxide which does not form a compound oxide with aluminum oxide, and at least one additional element selected from the group composed of rare earth elements and alkaline-earth elements. This inorganic oxide is characterized in that the content of the additional element is 1.1-8.0 atomic% of the total amount of aluminum of the aluminum oxide, a metallic element of the metal oxide and the additional element in terms of elements, ≥80% of primary particles of the inorganic oxide have each ≤100 nm particle size, at least a part of the primary particle of the inorganic oxide has an additional element-concentrated surface zone, where the content of the additional element is made higher locally, in the surface layer part, and the amount of the additional element in the additional element-concentrated surface zone is 0.06-0.98 mass% of the total amount of the inorganic oxide in terms of oxides. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供耐热性优异的无机氧化物。解决方案：颗粒无机氧化物含有氧化铝，不与氧化铝形成复合氧化物的金属氧化物和至少一种选自稀土元素和碱土金属元素的附加元素。该无机氧化物的特征在于，附加元素的含量为氧化铝的铝总量的1.1-8.0原子％，金属氧化物的金属元素和元素中的附加元素的≥80％无机氧化物的一次颗粒具有≤100nm的粒度，无机氧化物的一次粒子的至少一部分具有附加元素浓缩表面区域，其中附加元素的含量在局部变得更高，在表面附加元素浓缩表面区域中的附加元素的量为氧化物换算为无机氧化物总量的0.06〜0.98质量％。版权所有（C）2008，JPO＆INPIT

4. 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

5. 发明专利

JP2007301526A Catalyst for cleaning exhaust gas and its manufacturing method 审中-公开
标题翻译：用于清洁排气的催化剂及其制造方法
公开(公告)号：JP2007301526A
公开(公告)日：2007-11-22
申请号：JP2006135081
申请日：2006-05-15
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 , TAKAHASHI NAOKI , YOSHIDA TAKESHI , SATO AKEMI
IPC分类号： B01J23/63 , B01D53/94 , F01N3/10
CPC分类号： B01D53/944 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/204 , B01D2255/2047 , B01D2255/206 , B01D2255/20715 , B01D2255/2092 , B01D2255/90 , B01D2255/904 , B01D2255/9207 , B01J23/63 , B01J35/002 , F01N3/0857 , F01N3/2803 , F01N2370/02 , Y02T10/20
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas, in which the degradation of Rh is restrained satisfactorily and which has excellent low-temperature performance. SOLUTION: The catalyst for cleaning exhaust gas is manufactured by using a catalyst component A, which is obtained by depositing Rh on a catalytic carrier for depositing Rh and has 25-60 μmol g -1 CO 2 adsorption capacity per unit weight and 0.2-2.3 μmol m -2 g 1 CO 2 adsorption capacity per unit specific surface area, a catalyst component B and a binder. This catalyst is characterized in that the CO 2 adsorption capacity per unit weight is 18-60 μmol g -1 and the CO 2 adsorption capacity per unit specific surface area is 0.2-2.5 μmol m -2 g 1 and the ratio of (the CO 2 adsorption capacity per unit weight of this catalyst)/(the CO 2 adsorption capacity per unit weight of the catalyst component A) is ≥75%. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种清洁排气的催化剂，其中Rh的降解令人满意地被抑制并且具有优异的低温性能。解决方案：通过使用催化剂组分A制备用于清洁废气的催化剂，催化剂组分A通过在用于沉积Rh的催化载体上沉积Rh而获得，并且具有25-60μmol/ 每单位重量的吸附容量和0.2-2.3μmol/ s的吸附容量 2 2 比表面积，催化剂组分B和粘合剂。该催化剂的特征在于每单位重量的CO 2 吸附容量为18-60μmol·g·SP·-1·/ 单位比表面积为0.2-2.5μmol·m·SP＆gt;＆lt; SP＆gt;＆lt; SP＆gt; 1＆lt; / SP＆gt;（每单位重量的CO 2 催化剂）/（催化剂组分A）每单位重量的CO 2 吸附容量≥75％。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2006035019A Inorganic oxide, catalyst carrier for cleaning exhaust gas and catalyst for cleaning exhaust gas 有权
标题翻译：无机氧化物，用于清洁排气的催化剂载体和用于清洁排气的催化剂
公开(公告)号：JP2006035019A
公开(公告)日：2006-02-09
申请号：JP2004214939
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： B01J23/63 , B01D53/86 , B01J23/10 , B01J32/00 , B01J37/08 , C01G25/00 , F01N3/10
摘要： PROBLEM TO BE SOLVED: To provide an inorganic oxide in which grain growth of carried metals (rhodium, or the like) is sufficiently suppressed, a catalyst carrier for cleaning an exhaust gas comprising the same and a catalyst for cleaning the exhaust gas using the same. SOLUTION: The granular inorganic oxide contains aluminum oxide; a metal oxide not forming a composite oxide with aluminum oxide; and an addition element comprising at least one of a rare-earth element and an alkaline earth element and contains a secondary particle formed by coagulation of a primary particle. In the inorganic oxide, at least a part of the secondary particle is formed by coagulation of a plurality of the first primary particles with a particle diameter of 100 nm or less containing aluminum oxide and the addition element and a plurality of second primary particles with a particle diameter of 100 nm or less containing the metal oxide and the addition element. At least a part of the first and second primary particles has a surface thickening area where a content ratio of the addition element is locally enhanced at the surface layer part. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：提供一种无机氧化物，其中承载的金属（铑等）的晶粒生长被充分抑制，用于清洁包含该催化剂的废气的催化剂载体和用于清洁排气的催化剂使用相同解决方案：粒状无机氧化物含有氧化铝; 不与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添加元素，并且含有通过一次粒子凝聚而形成的二次粒子。在无机氧化物中，至少一部分二次粒子是通过使包含氧化铝和添加元素的多个粒径为100nm以下的第一一次粒子和多个第二一次粒子与含有金属氧化物和添加元素的粒径为100nm以下。第一和第二初级颗粒的至少一部分具有表面增稠区域，其中添加元素的含量比在表层部分局部增强。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2006035018A Carrier for catalyst and catalyst using the same 有权
标题翻译：使用催化剂和催化剂的载体
公开(公告)号：JP2006035018A
公开(公告)日：2006-02-09
申请号：JP2004214930
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： TANABE TOSHITAKA , MORIKAWA AKIRA , TAKAHASHI NAOKI , SUZUKI HIROMASA , SATO AKEMI , KANAZAWA TAKAAKI , KUNO HISASHI , ISHIKIRIYAMA MAMORU
IPC分类号： B01J32/00 , B01J23/63
CPC分类号： B01D53/945 , B01D2255/1025 , B01D2255/206 , B01D2255/20715 , B01J21/066 , B01J23/63 , B01J32/00 , B01J35/0006 , B01J37/0205 , Y02T10/22
摘要： PROBLEM TO BE SOLVED: To provide a carrier for a catalyst which satisfactorily restrains the grain growth of rhodium particle deposited thereon as an active point of a catalysis even when the catalyst is used in a high-temperature environment for a long time to thereby satisfactorily prevent deterioration in the activity of the catalyst, and to provide the catalyst using the carrier. SOLUTION: The carrier for the catalyst is composed of a base material containing an oxide and an element of group 3A in the periodic table and a covering part for covering at least a part of the surface of the base material. The covering part contains the element of group 3A whose concentration is higher than that of the element of group 3A contained in the base material. As a result, even when the catalyst obtained by depositing rhodium on the carrier is used in the high-temperature environment for a long time, the grain growth of a rhodium particle is restrained, so that the activity of the catalyst can be satisfactorily prevented from being deteriorated. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：为了提供令人满意地抑制沉积在其上的铑颗粒的晶粒生长作为催化活性点的催化剂载体，即使催化剂长时间在高温环境中使用从而令人满意地防止催化剂的活性降低，并使用载体提供催化剂。解决方案：用于催化剂的载体由在周期表中含有氧化物和3A族元素的基材和覆盖基材表面的至少一部分的覆盖部分组成。覆盖部分包含浓度高于基材中所含的3A族元素的组3A的元素。结果，即使通过在载体上沉积铑获得的催化剂长时间在高温环境中使用，也抑制了铑颗粒的晶粒生长，从而可以令人满意地防止催化剂的活性正在恶化版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2010005587A Catalyst for cleaning exhaust gas 有权
标题翻译：催化剂用于清洁排气
公开(公告)号：JP2010005587A
公开(公告)日：2010-01-14
申请号：JP2008170769
申请日：2008-06-30
申请人： Toyota Central R&D Labs 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： SATO AKEMI , TAKEUCHI MASAHIKO , HEIKO KEIZO , KAWAMURA ARISUKE , FUJIWARA TAKAHIKO , SUZUKI TADASHI , TAKAHASHI NAOKI
IPC分类号： B01J23/58 , B01D53/94 , F01N3/10
CPC分类号： B01J23/002 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/206 , B01D2255/20715 , B01D2255/9022 , B01D2255/908 , B01D2257/304 , B01J23/63 , B01J23/83 , B01J23/894 , B01J35/04 , B01J37/0244 , B01J2523/00 , Y02T10/22 , B01J2523/3712 , B01J2523/3718 , B01J2523/48 , B01J2523/828 , B01J2523/824 , B01J2523/822
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas, the oxygen storage/release capacity of which is improved by using ceria and which restrains the production of H 2 S. SOLUTION: The catalyst for cleaning exhaust gas is composed of a lower catalyst layer which contains a ceria-zirconia compound oxide containing 50-70 mass% CeO 2 and ≥5 mass% Pr 2 O 3 and on which at least one of Pt and Pd is deposited and an upper catalyst layer which contains zirconia at the least and on which Rh is deposited at the least. The total amount of CeO 2 per 1 liter carrier base material is 15-30 g. Since the amount of CeO 2 is small, the catalyst for cleaning exhaust gas restrains the production of H 2 S and the catalyst for cleaning exhaust gas exhibits high oxygen storage/release capacity even if the amount of CeO 2 is small. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于清洁废气的催化剂，其通过使用二氧化铈提高其储氧/释放能力，并且抑制H 2 S的生产。解决方案：用于清洁废气的催化剂由含有50-70质量％CeO 2 SB 2和/或5质量％Pr 的二氧化铈 - 氧化锆复合氧化物的下层催化剂层组成， 2，其中沉积Pt和Pd中的至少一种，并且至少沉积有至少一个氧化锆并且在其上沉积Rh的上部催化剂层。每1升载体基材的CeO 2 的总量为15-30g。由于CeO 2 的量少，所以用于清洁废气的催化剂抑制了H 2 ~~S的生成，并且用于清洁废气的催化剂表现出高的储氧/释放能力即使CeO 2 的量小。版权所有（C）2010，JPO＆INPIT~~

9. 发明专利

JP2007181798A Catalyst for cleaning exhaust gas 审中-公开
标题翻译：催化剂用于清洁排气
公开(公告)号：JP2007181798A
公开(公告)日：2007-07-19
申请号：JP2006002709
申请日：2006-01-10
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SATO AKEMI
IPC分类号： B01J35/04 , B01D53/86 , B01J37/02 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas, which has such a new constitution that the cleaning efficiency can be increased even when the composition and amount of a catalyst component to be deposited on a carrier base material are the same as before. SOLUTION: The catalyst for cleaning exhaust gas is composed of the carrier base material A having a plurality of cells 2 each of which is partitioned by partition walls 10 and penetrated to the predetermined direction and catalyst layers 3 deposited on wall surfaces 14 of partition walls 10. Each of catalyst layers 3 is deposited while leaving a gap 13 penetrated to the predetermined direction between the corresponding catalyst layer and the corresponding wall surface 14. Since the gap 13 penetrated to the predetermined direction is left between the corresponding wall surface 14 and the corresponding catalyst layer 3, the exhaust gas flowing through the catalyst for cleaning exhaust gas is made to flow into not only the conventional flow passage 31 surrounded by the catalyst layers 3 but also the gap 13. As a result, the surface area of each of catalyst layers 3 to be in contact with the exhaust gas can be increased and the cleaning efficiency of the catalyst for cleaning exhaust gas can also be increased. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于清洁废气的催化剂，其具有这样的新结构，即即使要沉积在载体基材上的催化剂组分的组成和用量为和之前一样。解决方案：用于清洁废气的催化剂由载体基材A组成，载体基材A具有多个单元2，每个单元被分隔壁10分隔并穿过预定方向，催化剂层3沉积在壁表面14上每个催化剂层3被沉积，同时留下在相应的催化剂层和相应的壁表面14之间穿过预定方向的间隙13.由于穿过预定方向的间隙13留在对应的壁表面14 和相应的催化剂层3，不仅流过用于清洁废气的催化剂的废气不仅流过由催化剂层3围绕的常规流动通道31，而且流入间隙13.结果，可以提高与废气接触的催化剂层3的各个和用于清洁排气的催化剂的清洗效率也可以增加。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2006192357A Catalyst for exhaust gas purification 审中-公开
标题翻译：催化剂用于排气净化
公开(公告)号：JP2006192357A
公开(公告)日：2006-07-27
申请号：JP2005005465
申请日：2005-01-12
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SATO AKEMI
IPC分类号： B01J23/63 , B01D53/94 , B01J23/56
摘要： PROBLEM TO BE SOLVED: To provide a catalyst containing a CeO 2 -ZrO 2 composite oxide as a main carrier wherein particles of noble metals to be supported on the catalyst are prevented from growing and the characteristics of respective noble metals can be induced at the maximum. SOLUTION: There is provided a catalyst for exhaust gas purification at least comprising: a first catalyst layer 2 formed of at least one of Pt and Pd supported on a CeO 2 -ZrO 2 composite oxide; a second catalyst layer 4 formed of Rh supported on ZrO 2 ; and a transfer prevention layer 3 made of a porous oxide and formed between the first layer 2 and a second layer 4 to prevent noble metals from transferring therebetween, wherein noble metals are prevented from transferring between the first catalyst layer 2 and the second catalyst layer 4 by the transfer prevention layer 3, so that formation of solid solution of Pt and Rh, and also growth of Pt particles are prevented. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：待解决的问题：为了提供含有CeO 2 SBS-ZrO 2 SBB复合氧化物作为主要载体的催化剂，其中负载在催化剂上的贵金属颗粒并且可以最大限度地诱导各贵金属的特性。解决方案：提供了一种用于废气净化的催化剂，其至少包括：由支撑在CeO 2 SB 2 -ZrO 2上的Pt和Pd中的至少一种形成的第一催化剂层2 复合氧化物; 由负载在ZrO 2上的Rh形成的第二催化剂层4; 以及形成在第一层2和第二层4之间的由多孔氧化物制成的防转移层3，以防止贵金属在其间转移，其中防止贵金属在第一催化剂层2和第二催化剂层4之间转移通过转印防止层3，从而防止形成Pt和Rh的固溶体以及Pt颗粒的生长。版权所有（C）2006，JPO＆NCIPI

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