公开(公告)号：US06933259B2

公开(公告)日：2005-08-23

申请号：US09987262

申请日：2001-11-14

申请人： Miho Hatanaka ,  Akira Morikawa ,  Akihiko Suda ,  Hideo Sobukawa ,  Kiyoshi Yamazaki

发明人： Miho Hatanaka ,  Akira Morikawa ,  Akihiko Suda ,  Hideo Sobukawa ,  Kiyoshi Yamazaki

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/00 ,  B01J23/10 ,  B01J23/63 ,  B01J32/00 ,  B01J35/10 ,  B01J37/03 ,  C01B13/14 ,  C01B13/36 ,  C01B25/00 ,  C01B33/00 ,  C01F17/00 ,  C01G23/00 ,  B01J21/02 ,  B01J21/06 ,  B01J23/03

CPC分类号： C01B13/14 ,  B01D53/945 ,  B01J23/002 ,  B01J23/10 ,  B01J23/63 ,  B01J35/10 ,  B01J37/031 ,  B01J2523/00 ,  B82Y30/00 ,  C01P2002/60 ,  C01P2004/64 ,  C01P2006/13 ,  C01P2006/14 ,  C01P2006/16 ,  Y02A50/2324 ,  Y02T10/22 ,  Y10T428/2982 ,  Y10T428/2993 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/31 ,  B01J2523/25 ,  B01J2523/36

摘要： This composite oxide powder can secure a large pore volume even after calcination at high temperature and, when a catalyst is formed by loading a noble metal on this composite oxide powder, noble metal grain growth can be suppressed. The composite oxide powder comprises particles of an oxide of a metal M1 and an oxide of a metal M2 which does not dissolve in the oxide of the metal M1, the oxide of the metal M1 and the oxide of the metal M2 being dispersed at the nanometer level. Since different oxides serve as a barrier to each other, sintering is suppressed. Therefore, in the case of composite oxide powder comprising Ce as a metal M1 and Al as a metal M2, grain growth is small even after exposed to high temperature and pores of 3.5-100 nm secure a volume of 0.07 cc/g or more after calcination at 600° C. for 5 hours and a volume of 0.04 cc/g or more after calcination at 800° C. for 5 hours.

摘要翻译： 该复合氧化物粉末即使在高温下煅烧后也能确保较大的孔体积，并且当通过在该复合氧化物粉末上负载贵金属形成催化剂时，可以抑制贵金属晶粒生长。 复合氧化物粉末包含不溶于金属M 1 O 3的氧化物的金属M 1氧化物和金属M 2 O 3的氧化物的颗粒， 金属M 1的氧化物和金属M 2的氧化物分散在纳米级。 由于不同的氧化物彼此作为隔离物，因此抑制烧结。 因此，在作为金属M 1 C的Ce和作为金属M 2 N的Al的复合氧化物粉末的情况下，即使在暴露于高温和细孔之后，晶粒生长也很小 3.5-100nm，在800℃煅烧5小时后，在600℃煅烧5小时后，体积为0.07cc / g以上，体积为0.04cc / g以上。

公开(公告)号：US06852665B2

公开(公告)日：2005-02-08

申请号：US09911489

申请日：2001-07-25

申请人： Akira Morikawa ,  Miho Hatanaka ,  Haruo Imagawa ,  Akihiko Suda ,  Naoki Takahashi

发明人： Akira Morikawa ,  Miho Hatanaka ,  Haruo Imagawa ,  Akihiko Suda ,  Naoki Takahashi

IPC分类号： F01N3/10 ,  B01D53/94 ,  B01J21/06 ,  B01J23/10 ,  B01J23/46 ,  B01J23/56 ,  B01J23/63 ,  B01J29/44 ,  B01J32/00 ,  B01J35/00 ,  B01J35/02 ,  B01J35/08 ,  B01J37/02 ,  B01J37/03 ,  C01F7/02 ,  C01G25/02 ,  B01J23/00

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J35/0006 ,  B01J35/023 ,  B01J37/0244 ,  B01J37/0246 ,  B01J37/031 ,  C01F7/02 ,  C01F7/025 ,  C01G25/02 ,  C01P2002/52 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/13 ,  C01P2006/16 ,  Y02T10/22

摘要： A composite oxide includes agglomerated particles which have an average particle diameter of 20 μm or less, which are composed of a plurality of metallic element oxides being in form of fine particles having an average diameter of 50 nm or less, and which have a surface and an inner portion whose metallic element distributions differ with each other. The characteristics of the respective metallic elements are exhibited maximally. Hence, it is extremely useful as a support for an exhaust gas purifying catalyst. The catalyst exhibits the activities which degrade less even after it is subjected to a sever durability, is good in terms of the heat and sulfur-poisoning resistance, and can efficiently purify the harmful components in exhaust gases. Moreover, it is possible to produce such a composite oxide and catalyst easily and stably by production processes disclosed herein.

摘要翻译： 复合氧化物包括平均粒径为20μm以下的凝集粒子，其由平均直径为50nm以下的细颗粒形式的多个金属元素氧化物构成，并且具有表面和 其金属元素分布彼此不同的内部部分。 各金属元素的特性最大程度地呈现。 因此，作为废气净化催化剂的载体是非常有用的。 该催化剂表现出即使在耐久耐久性之后降解较少的活性，在耐热和耐硫中毒性方面也是良好的，并且可以有效地净化废气中的有害成分。 此外，通过本文公开的生产方法，可以容易且稳定地制备这种复合氧化物和催化剂。

公开(公告)号：US06762147B2

公开(公告)日：2004-07-13

申请号：US10079872

申请日：2002-02-22

申请人： Akira Morikawa ,  Takao Tani ,  Miho Hatanaka ,  Akihiko Suda

发明人： Akira Morikawa ,  Takao Tani ,  Miho Hatanaka ,  Akihiko Suda

IPC分类号： B01J2108

CPC分类号： B01D53/945 ,  B01D53/944 ,  B01J23/10 ,  B01J35/023 ,  B01J35/1047 ,  B01J37/0045 ,  B01J37/0054 ,  C01B13/0262 ,  F01N3/2803 ,  F01N2570/16 ,  Y02T10/22

摘要： Composite oxide powder has a large specific surface area and a large pore volume even after a high-temperature durability test, without losing oxygen storage ability of a single metal oxide. In this composite oxide powder, a first metal oxide having oxygen storage ability is held as ultrafine particles in the form of islands by a second metal oxide which is different from the first metal oxide, pore volume is not less than 2 cc/g and the first metal oxide particles have a diameter of not more than 30 nm even after subjected to high temperature of 900° C. or more. Since the first metal oxide particles are held in the form of islands by the second metal oxide particles, separated from each other and suppressed from contacting each other, the first metal oxide particles hardly grow granularly.

摘要翻译： 复合氧化物粉末即使在高温耐久性试验后也具有大的比表面积和较大的孔体积，而不损失单一金属氧化物的储氧能力。 在该复合氧化物粉末中，具有储氧能力的第一金属氧化物通过与第一金属氧化物不同的第二金属氧化物保持为岛状的超微粒子，孔体积不小于2cc / g， 即使在900℃以上的高温下，第一金属氧化物粒子的直径也不大于30nm。 由于第一金属氧化物颗粒通过第二金属氧化物颗粒被保持为岛状，因此彼此分离并被抑制彼此接触，因此第一金属氧化物颗粒几乎不会颗粒生长。

公开(公告)号：US07247597B2

公开(公告)日：2007-07-24

申请号：US10225186

申请日：2002-08-22

申请人： Akira Morikawa ,  Yasutaka Nagai ,  Toshitaka Tanabe ,  Tadashi Suzuki ,  Akihiko Suda ,  Hideo Sobukawa

发明人： Akira Morikawa ,  Yasutaka Nagai ,  Toshitaka Tanabe ,  Tadashi Suzuki ,  Akihiko Suda ,  Hideo Sobukawa

IPC分类号： B01J23/00 ,  C01G49/00 ,  C04B35/48

CPC分类号： B01J35/002 ,  B01D2255/1021 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/908 ,  B01J21/066 ,  B01J23/10 ,  B01J23/63 ,  B01J35/023 ,  B01J35/1014 ,  B01J37/03 ,  F01N2570/16

摘要： A composite oxide includes CeO2, ZrO2 and a metallic oxide being free from reacting with CeO2 and ZrO2 at 700° C. or more, preferably at 900° C. or more and further preferably at 1,000° C. or more. The composite oxide has a regulatory oriented phase, such as a pyrochlore phase, etc., in which at least a part of Ce cations and Zr cations are oriented regularly. The composite oxide makes a catalytic support. The CeO2—ZrO2 composite oxide and the reaction-free metallic oxide make barriers each other which suppress the granular growth when the composite oxide is subjected to high-temperature heat in a reducing heat treatment to form the regulatory oriented phase. The regulatory oriented phase improves the oxygen storage-and-release capability of the catalytic support. Thus, it is possible to simultaneously attain a large a specific surface area and a high oxygen storage-and-release capability.

摘要翻译： 复合氧化物包括CeO 2 SiO 2，ZrO 2 2和不与CeO 2和ZrO 2的反应的金属氧化物 > 700℃以上，优选为900℃以上，进一步优选为1000℃以上。 复合氧化物具有调节取向相，如烧绿石相等，其中至少一部分Ce阳离子和Zr阳离子定期取向。 复合氧化物起催化作用。 当复合氧化物经受高温加热时，CeO 2 -ZrO 2复合氧化物和无反应的金属氧化物形成彼此的屏障，其抑制颗粒生长 一种还原热处理，形成规范导向相。 调节取向相提高了催化支持物的储氧和释放能力。 因此，可以同时获得大的比表面积和高的储氧 - 释放能力。

公开(公告)号：US5958827A

公开(公告)日：1999-09-28

申请号：US758807

申请日：1996-12-04

申请人： Akihiko Suda ,  Hideo Sobukawa ,  Tadashi Suzuki ,  Toshio Kandori ,  Yoshio Ukyo ,  Masahiro Sugiura ,  Mareo Kimura ,  Hiroshi Hirayama ,  Yasuo Ikeda

发明人： Akihiko Suda ,  Hideo Sobukawa ,  Tadashi Suzuki ,  Toshio Kandori ,  Yoshio Ukyo ,  Masahiro Sugiura ,  Mareo Kimura ,  Hiroshi Hirayama ,  Yasuo Ikeda

IPC分类号： B01D53/94 ,  B01J23/10 ,  B01J23/63 ,  B01J35/00 ,  B01J37/03

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J23/63 ,  B01J35/002 ,  B01J37/03 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/40 ,  B01J35/006 ,  Y02T10/22

摘要： A solid solution particle of oxides contains a solid solution of oxides in which one oxide is dissolved into the other oxide, and in which the degree of dissolution of one oxide into the other oxide is not less 50%, and in which an average diameter of crystallite is not more than 100 nm. The solid solution particle of oxides has small average diameter of a crystallite and large specific surface area, and it improves capacities such as an oxygen storage ability due to high degree of dissolution. A catalyst for purifying exhaust gases has excellent purifying performance by employing the solid solution comprising ceria and zirconia which has large OSC and high oxygen adsorption and discharge speed.

摘要翻译： 氧化物的固溶体含有氧化物的固溶体，其中一种氧化物溶解在另一种氧化物中，其中一种氧化物溶解在另一种氧化物中的程度不低于50％，其中平均直径 微晶不超过100nm。 氧化物的固溶颗粒具有微晶的平均直径小并且比表面积大，并且由于高溶解度而提高诸如储氧能力的容量。 用于净化废气的催化剂通过使用包含具有大的OSC和高氧吸附和排出速度的二氧化铈和氧化锆的固溶体而具有优异的净化性能。

公开(公告)号：US5618772A

公开(公告)日：1997-04-08

申请号：US424092

申请日：1995-04-19

申请人： Akihiko Suda ,  Yoshio Ukyo ,  Hideo Sobukawa ,  Toshio Kandori ,  Masayuki Fukui

发明人： Akihiko Suda ,  Yoshio Ukyo ,  Hideo Sobukawa ,  Toshio Kandori ,  Masayuki Fukui

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/12 ,  B01J23/02 ,  B01J23/10 ,  B01J23/40 ,  B01J23/46 ,  B01J23/58 ,  B01J23/63 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J21/08

CPC分类号： B01J23/464 ,  B01J21/12 ,  B01J37/0236 ,  B01J23/40 ,  B01J23/63

摘要： A method for producing a catalyst having high catalytic activity even at high temperatures of 1200.degree. C. or higher. Fine alumina particles, of which 50% by weight or more have a particle size of 100 nm or less, are mixed with a catalytic component and a substance of inhibiting the sintering of fine alumina particles to form a slurry mixture. This slurry is dried and then calcined to obtain a porous catalyst. The fine alumina particles in the porous catalyst have a large specific surface area even at high temperatures and therefore the porous catalyst maintains its high catalytic activity even at high temperatures of 1200.degree. C. or higher.

摘要翻译： 即使在1200℃以上的高温下也具有催化活性高的催化剂的制造方法。 将50重量％以上的粒径为100nm以下的微细氧化铝颗粒与催化成分和抑制氧化铝微粒烧结而形成浆料混合物的物质混合。 将该浆料干燥，然后煅烧以获得多孔催化剂。 多孔催化剂中的氧化铝微粒即使在高温下也具有大的比表面积，因此即使在1200℃以上的高温下，多孔催化剂也能保持其高的催化活性。

公开(公告)号：US06391276B1

公开(公告)日：2002-05-21

申请号：US09525232

申请日：2000-03-14

申请人： Akihiko Suda ,  Naoki Takahashi ,  Chika Ando ,  Toshio Kandori ,  Miho Hatanaka

发明人： Akihiko Suda ,  Naoki Takahashi ,  Chika Ando ,  Toshio Kandori ,  Miho Hatanaka

IPC分类号： C01G2300

CPC分类号： B01J21/066 ,  B01D53/9422 ,  B01D2255/2042 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/9207 ,  B01J21/063 ,  C01P2002/50

摘要： Disclosed are (1) a titania-zirconia powder having at least a part of the zirconia solid-dissolved in the titania crystalline phase or at least a part of the titania solid-dissolved in the zirconia crystalline phase, (2) a titania-zirconia powder containing 3 to 30 wt % of zirconia and 0.5 to 10 wt % of yttria and containing less than 20 wt %, in total, of at least a complex oxide having a composition of ZrTiO4 or (Ti,Zr) O2, monoclinic phase zirconia, and tetragonal phase zirconia, wherein the titania-zirconia powder comprises an anatase phase, and which retains a specific surface area of 34 m2/g or more after heat-treated at 900° C. for 5 hours in the air, and (3) a titania-zirconia powder wherein the titania-zirconia powder (1) or (2) having an average particle size of 1 &mgr;m or smaller is mutually dispersed with an alumina powder; and processes for producing the powders are disclosed.

摘要翻译： 公开了（1）二氧化钛 - 氧化锆粉末，其中至少一部分氧化锆固体溶解在二氧化钛结晶相中，或至少一部分固体溶解在氧化锆晶相中，（2）二氧化钛 - 氧化锆 含有3〜30重量％的氧化锆和0.5〜10重量％的氧化钇和至少含有20重量％的至少具有ZrTiO 4或（Ti，Zr）O 2组成的复合氧化物，单斜相氧化锆 和四方相氧化锆，其中二氧化钛 - 氧化锆粉末包含锐钛矿相，并且在900℃下在空气中热处理5小时后，比表面积保持为34m 2 / g以上，（3 ）二氧化钛 - 氧化锆粉末，其中平均粒度为1μm或更小的二氧化钛 - 氧化锆粉末（1）或（2）与氧化铝粉末相互分散; 公开了制造粉末的方法。

公开(公告)号：US06926875B2

公开(公告)日：2005-08-09

申请号：US10262097

申请日：2002-10-02

申请人： Miho Hatanaka ,  Akihiko Suda ,  Toshiyuki Tanaka ,  Naoki Takahashi ,  Toshio Yamamoto ,  Yusuke Akimoto ,  Naohiro Terao

发明人： Miho Hatanaka ,  Akihiko Suda ,  Toshiyuki Tanaka ,  Naoki Takahashi ,  Toshio Yamamoto ,  Yusuke Akimoto ,  Naohiro Terao

IPC分类号： B01D53/04 ,  B01D53/94 ,  B01J35/04 ,  B01J35/10 ,  B01J37/08 ,  B01D53/54 ,  B01D53/60

CPC分类号： B01D53/02 ,  B01D53/945 ,  B01D2253/104 ,  B01D2253/308 ,  B01D2253/31 ,  B01D2257/404 ,  B01D2258/01 ,  B01D2259/4566 ,  B01J21/04 ,  B01J21/066 ,  B01J35/002 ,  B01J35/04 ,  B01J35/1019 ,  B01J35/1061 ,  B01J35/1066 ,  B01J37/088 ,  Y02T10/22

摘要： Disclosed are a porous material comprising particles without substantial fibrous structure and having pores, the pores having a mean pore diameter in a meson-pore region, sharp pore size distribution, and at least a part of the pores being connected three-dimensionally to form a three-dimensional network structure with random passages, the porous material preferably being of alumina and having a spongy structure or the porous material preferably being an aggregate of particles having an aspect ratio of 3 or less; a process of producing the porous material which includes a step of aging a system capable of becoming an oxide on thermal decomposition; a catalyst for exhaust gas purification having excellent NOx removal performance, high resistance against sulfur poisoning, and satisfactory high-temperature durability which comprises the porous material as a carrier having supported thereon a noble metal and an NOx storage component; and a method of exhaust gas purification using the catalyst.

摘要翻译： 公开了一种多孔材料，其包含没有实质纤维结构且具有孔的颗粒，孔具有介孔区域中的平均孔径，尖锐的孔径分布，并且至少一部分孔三维连接以形成 具有随机通道的三维网状结构，多孔材料优选为氧化铝并具有海绵结构，或多孔材料优选为纵横比为3以下的颗粒的聚集体; 一种制造多孔材料的方法，包括使能够在热分解时成为氧化物的体系老化的步骤; 用于排气净化的催化剂具有优异的除去性能，高耐硫中毒性和令人满意的高温耐久性，其包括作为载体的多孔材料负载有贵金属和NO， SUB> x 存储组件; 以及使用该催化剂的排气净化方法。

公开(公告)号：US06511642B1

公开(公告)日：2003-01-28

申请号：US09481525

申请日：2000-01-12

申请人： Miho Hatanaka ,  Akihiko Suda ,  Toshiyuki Tanaka ,  Naoki Takahashi ,  Toshio Yamamoto ,  Yusuke Akimoto ,  Naohiro Terao

发明人： Miho Hatanaka ,  Akihiko Suda ,  Toshiyuki Tanaka ,  Naoki Takahashi ,  Toshio Yamamoto ,  Yusuke Akimoto ,  Naohiro Terao

IPC分类号： B01D5354

CPC分类号： B01D53/02 ,  B01D53/945 ,  B01D2253/104 ,  B01D2253/308 ,  B01D2253/31 ,  B01D2257/404 ,  B01D2258/01 ,  B01D2259/4566 ,  B01J21/04 ,  B01J21/066 ,  B01J35/002 ,  B01J35/04 ,  B01J35/1019 ,  B01J35/1061 ,  B01J35/1066 ,  B01J37/088 ,  Y02T10/22

摘要： Disclosed are a porous material comprising particles without substantial fibrous structure and having pores, the pores having a mean pore diameter in a meso-pore region, sharp pore size distribution, and at least a part of the pores being connected three-dimensionally to form a three-dimensional network structure with random passages, the porous material preferably being of alumina and having a spongy structure or the porous material preferably being an aggregate of particles having an aspect ratio of 3 or less; a process of producing the porous material which includes a step of aging a system capable of becoming an oxide on thermal decomposition; a catalyst for exhaust gas purification having excellent NOx removal performance, high resistance against sulfur poisoning, and satisfactory high-temperature durability which comprises the porous material as a carrier having supported thereon a noble metal and an NOx storage component; and a method of exhaust gas purification using the catalyst.

摘要翻译： 公开了一种多孔材料，其包含没有实质的纤维结构且具有孔的颗粒，所述孔具有在中孔区域中的平均孔径，尖锐的孔径分布，并且至少一部分孔三维连接以形成 具有随机通道的三维网状结构，多孔材料优选为氧化铝并具有海绵结构，或多孔材料优选为纵横比为3以下的颗粒的聚集体; 一种制造多孔材料的方法，包括使能够在热分解时成为氧化物的体系老化的步骤; 用于排气净化的催化剂具有优异的NOx去除性能，高耐硫中毒性和令人满意的高温耐久性，其包括多孔材料作为负载有贵金属和NOx储存组分的载体; 以及使用该催化剂的排气净化方法。

公开(公告)号：US5945369A

公开(公告)日：1999-08-31

申请号：US569396

申请日：1995-12-08

申请人： Mareo Kimura ,  Yoriko Matsuoka ,  Hideo Sobukawa ,  Masayuki Fukui ,  Akihiko Suda ,  Toshio Kandori ,  Yoshio Ukyo

发明人： Mareo Kimura ,  Yoriko Matsuoka ,  Hideo Sobukawa ,  Masayuki Fukui ,  Akihiko Suda ,  Toshio Kandori ,  Yoshio Ukyo

IPC分类号： B01D53/94 ,  B01J23/10 ,  B01J23/63 ,  B01J23/38

CPC分类号： B01D53/945 ,  B01J23/10 ,  B01J23/63 ,  B01D2255/206 ,  B01D2255/20715 ,  B01D2255/40 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases includes a porous support; a cerium oxide or a solid solution of a cerium oxide and a zirconium oxide in a state of mutual solid solution, loaded on the porous support; and a noble metal element loaded on the porous support. The cerium oxide or the solid solution has an average particle diameter of from 5 to 100 nm. The cerium oxide is present in the solid solution in an amount of from 0.2 to 4.0 by molar ratio with respect to the zirconium oxide therein. The catalyst can be prepared by: coating and calcinating on a support substrate a slurry of a cerium oxide sol, a cerium oxide sol and a zirconium oxide sol, on a solid solution powder of a cerium oxide and a zirconium oxide in a state of mutual solid solution; and loading a noble metal element thereon. The cerium oxide or its solid solution has a surface area large enough to effect an oxygen storage function, and has an average particle diameter large enough to prevent the same from entering deeply into fine pores of a porous support, thereby providing a catalyst fully exhibiting both of the oxygen storage capability and the catalytic activity.

摘要翻译： 用于净化废气的催化剂包括多孔载体; 以相互固溶态的氧化铈或氧化铈和氧化锆的固溶体装载在多孔载体上; 以及负载在多孔载体上的贵金属元素。 氧化铈或固溶体的平均粒径为5〜100nm。 相对于其中的氧化锆，氧化铈以相对于氧化锆的摩尔比为0.2〜4.0的量存在于固溶体中。 催化剂可以通过以下步骤制备：在氧化铈和氧化锆溶胶的固溶体粉末上以相互的状态将氧化铈溶胶，氧化铈溶胶和氧化锆溶胶的浆料在载体基材上涂覆和煅烧 固溶; 并在其上装载贵金属元素。 氧化铈或其固溶体具有足够大的表面积以实现储氧功能，并且具有足够大的平均粒径以防止其相当于深入多孔载体的细孔中，从而提供充分显示两者的催化剂 的储氧能力和催化活性。