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1. 发明专利

JP2007332881A Exhaust emission control device and exhaust emission control method using this device 审中-公开
标题翻译：排气排放控制装置和使用该装置的排气排放控制方法
公开(公告)号：JP2007332881A
公开(公告)日：2007-12-27
申请号：JP2006166491
申请日：2006-06-15
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： SUZUKI TADASHI , TAKAHASHI NAOKI , HACHISUGA ICHIRO
IPC分类号： F01N3/22 , B01D53/94 , B01J23/89 , F01N3/24
CPC分类号： F01N3/206 , B01D53/9445 , B01D53/9459 , B01D53/9477 , B01D2251/102 , B01D2251/11 , B01D2255/20738 , B01D2255/20753 , B01J23/002 , B01J23/894 , B01J37/0242 , B01J2523/00 , F01N3/021 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N3/32 , F01N9/00 , F01N13/009 , F01N13/0093 , F01N2560/025 , F01N2560/06 , F01N2610/04 , F01N2610/08 , F01N2610/146 , F01N2900/08 , Y02A50/2324 , Y02T10/22 , Y02T10/47 , B01J2523/3706 , B01J2523/3712 , B01J2523/3718 , B01J2523/48
摘要： PROBLEM TO BE SOLVED: To provide an exhaust emission control device capable of quickly putting the air-fuel ratio of exhaust gas flowing in a downstream catalyst in a stoichiometric or lean state in response to a change in an operation state of an internal combustion engine, capable of surely restraining generation of H
2 S, and capable of preventing functional reduction in an upstream catalyst in restarting by sufficiently preventing sulfur poisoning of the upstream catalyst.
SOLUTION: This exhaust emission control device is characterized by having an exhaust gas pipe 2 connected to the internal combustion engine 1, the upstream catalyst 3 arranged on the upstream side of an exhaust gas passage in the exhaust gas pipe 2, the downstream catalyst 4 arranged on the downstream side of the exhaust gas passage in the exhaust gas pipe 2 and carrying nickel and/or iron, and an oxidizing gas supply means 5 connected between the upstream catalyst 3 and the downstream catalyst 4 of the exhaust gas pipe 2 and supplying oxidizing gas in the exhaust gas pipe 2.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种废气排放控制装置，其能够响应于内部的运行状态的变化，快速地使在下游催化剂中流动的排气的空燃比为理论空燃比或稀薄状态内燃机，能够可靠地抑制H SB 2 S的产生，并且能够通过充分防止上游催化剂的硫中毒而能够防止重新启动中的上游催化剂的功能性降低。解决方案：该废气排放控制装置的特征在于，具有与内燃机1连接的排气管2，配置在排气管2的排气通路的上游侧的上游催化剂3，下游侧催化剂4，其设置在排气管2的排气通道的下游侧并承载镍和/或铁;以及氧化气体供给装置5，连接在排气管2的上游催化剂3和下游催化剂4之间并在废气管2中供给氧化气体。（C）2008，JPO＆INPIT

2. 发明专利

JP2006314894A Production method of catalyst for cleaning emission gas 审中-公开
标题翻译：用于清洁排放气体的催化剂的生产方法
公开(公告)号：JP2006314894A
公开(公告)日：2006-11-24
申请号：JP2005138816
申请日：2005-05-11
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： TAKAHASHI NAOKI , ARAYOSHI TAKATOSHI
IPC分类号： B01J23/63 , B01D53/94 , B01J37/00 , B01J37/02
摘要： PROBLEM TO BE SOLVED: To provide a production method of a catalyst for cleaning emission gas having a catalyst layer of a double layer structure comprised of the upper layer and the lower layer, wherein enhances the porosity of the upper layer is raised and the grain growth of a noble metal in the upper layer is suppressed. SOLUTION: The upper coat layer with high porosity is formed by using a slurry containing a carrier powder and a burnt-off powder and burning off the burnt-off powder by calcining after wash coating on the surface of the under catalyst layer 2. Then, the upper catalyst layer 3 is formed by carrying the noble metal on the upper coat layer. At the time of calcination of the upper coat layer, the noble metal is not affected even under high temperature due to the heat of combustion of the burnt-off powder because the upper coat does not contain the noble metal. The noble metal chemical liquid used in the impregnation supporting method or absorption supporting method does not cause such a failure that the noble metal is carried to the lower layer because the noble metal chemical liquid has properties to be carried on the surface of the coat layer. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决问题的方案：提供一种用于清洁具有由上层和下层构成的双层结构的催化剂层的排放气体的催化剂的制造方法，其中提高了上层的孔隙率，上层的贵金属的晶粒生长被抑制。解决方案：通过使用含有载体粉末和烧焦粉末的浆料形成具有高孔隙率的上涂层，并且在催化剂层2的表面上的洗涤涂层之后通过煅烧将烧焦粉末烧掉然后，通过在上涂层上承载贵金属来形成上催化剂层3。在上涂层煅烧时，由于上涂层不含有贵金属，所以贵金属即使在高温下也不会受到烧焦粉末的燃烧热的影响。在浸渍辅助方法或吸收辅助方法中使用的贵金属化学液体不会导致贵金属被运送到下层的故障，因为贵金属化学液体具有在涂层的表面上承载的性质。版权所有（C）2007，JPO＆INPIT

3. 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

4. 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

5. 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

6. 发明专利

JP2003313011A Method for producing metal oxide 审中-公开
标题翻译：生产金属氧化物的方法
公开(公告)号：JP2003313011A
公开(公告)日：2003-11-06
申请号：JP2002120941
申请日：2002-04-23
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： ISHIBASHI KAZUNOBU , ITO YUSUKE , SUDA AKIHIKO , SOFUGAWA HIDEO , TAKAHASHI NAOKI
IPC分类号： B01D53/94 , B01J23/42 , B01J23/63 , B01J37/08 , C01B13/18 , C01F7/30 , C01G25/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a metal oxide suitable for use as a catalyst carrier of a catalyst for cleaning of exhaust gas of an internal combustion engine and maintaining a large specific surface area with age and to provide a method for producing a multiple metal oxide having a widely selective composition and a large specific surface area. SOLUTION: In the method for producing a metal oxide, a solution prepared by dissolving at least one metal compound is impregnated into a porous material having pores and reducible to ashes, and after firing in a non-oxidizing atmosphere the porous material is burned and removed. Preferably the pores have 2-40 nm average pore diameter. When the multiple metal oxide is produced, preferably a solution prepared by dissolving at least two metal compounds is impregnated into the above porous material and the porous material is exposed to gaseous ammonia and fired in a non-oxidizing atmosphere. In the case where the metal compound is an aluminum compound, α-alumina is produced. COPYRIGHT: (C)2004,JPO
摘要翻译：解决问题的方法：提供适合用作内燃机的排气净化用催化剂的催化剂载体的金属氧化物的制造方法，并且随着时效维持大的比表面积，具有广泛选择性组成和大比表面积的多金属氧化物的制造方法。解决方案：在金属氧化物的制造方法中，将通过溶解至少一种金属化合物制备的溶液浸渍到具有孔隙并可还原成灰分的多孔材料中，并且在非氧化性气氛中烧成多孔材料烧毁优选孔具有2-40nm平均孔径。当制备多重金属氧化物时，优选将通过溶解至少两种金属化合物制备的溶液浸渍到上述多孔材料中，并将多孔材料暴露于气态氨并在非氧化性气氛中烧制。在金属化合物为铝化合物的情况下，制造α-氧化铝。版权所有（C）2004，JPO

7. 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

8. 发明专利

JP2004209443A Co shift reaction catalyst and hydrogen forming method 有权
公开(公告)号：JP2004209443A
公开(公告)日：2004-07-29
申请号：JP2003002380
申请日：2003-01-08
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： YAMAZAKI KIYOSHI , TAKAHASHI NAOKI , HIRABAYASHI TAKESHI , IBE MASAYA
IPC分类号： C01B3/40 , B01J27/053 , C01B3/48
CPC分类号： Y02P20/52
摘要： PROBLEM TO BE SOLVED: To exhibit a high CO shift reaction activity even in exhaust gas from an internal combustion engine of a lean combustion system, in a reaction condition of a large space velocity.
SOLUTION: In the catalyst comprising a carrier with ceria as a principal component and a noble metal carried on the carrier, the cerium atom in the carrier is fixed to tervalent. Thus, oxygen occlusion/releasing capacity is reduced, to suppress consumption of CO by oxidation with oxygen released in a reduction atmosphere.
COPYRIGHT: (C)2004,JPO&NCIPI

9. 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

10. 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

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