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1. 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.

2. 发明专利

JP2000189798A CATALYST FOR PURIFYING EXHAUST GAS AND PURIFYING METHOD OF EXHAUST GAS 失效
公开(公告)号：JP2000189798A
公开(公告)日：2000-07-11
申请号：JP37147298
申请日：1998-12-25
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： HACHISUGA ICHIRO , TANAKA TOSHIYUKI , ANDOU CHIWA , TAKAHASHI NAOKI
IPC分类号： B01D53/94 , B01J23/46 , B01J23/58 , B01J23/63 , F01N3/08 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To moreover improve the durability of NOx purifying capacity by depositing platinum and rhodium separately and also improving the durability of the powder carrying the rhodium. SOLUTION: The catalyst has the constitution in which the first powder carrying rhodium on the compound oxide expressed by MOx.nAl2O3 and the second powder carrying the NOx occluding material selected among alkali metals, alkaline earth metals and rare earth elements and the platinum on porous carrier particles are allowed to coexist. High NOx purifying capacity is manifested even after use at high temp. since the growth of particles of the platinum is suppressed by the rhodium and also the first powder carrying the rhodium on the MOx.nAl2O3 is high in hydrogen production amount after using over a long period of time.

3. 发明专利

JP2000327329A TITANIA-ZIRCONIA-BASED POWDER AND ITS PRODUCTION 失效
公开(公告)号：JP2000327329A
公开(公告)日：2000-11-28
申请号：JP2000066907
申请日：2000-03-10
申请人： TOYOTA CENTRAL RES & DEV
发明人： SUDA AKIHIKO , TAKAHASHI NAOKI , ANDOU CHIWA , KAMITORI TOSHIO , HATANAKA YOSHIO
IPC分类号： B01D53/94 , B01J21/06 , B01J23/10 , B01J32/00 , C01G25/00
摘要： PROBLEM TO BE SOLVED: To produce a new titania-zirconia-based powder excellent in poisoning resistance and eliminating properties for acidic substances such as sulfur compounds and capable of holding a high specific surface area even by heat treatment at high temperatures and remarkably improving heat resistance without changing characteristics such as a small number of basic points on the titania surface and to provide a method for producing the titania-zidconia-based powder. SOLUTION: (1) This titania-zirconia-based powder comprises at least a part of zirconia forming a solid solution in the crystal phase of titania or at least a part of titania forming a solid solution in the crystal phase of the zirconia. (2) The titania-zirconia-based powder comprises the crystal phase of the titania composed of an anatase phase, contains 3-30 wt.% of zirconia and 0.5-10 wt.% of yttria and has =34 m2/g specific surface area after heat treatment at 900 deg.C for 5 h in the atmosphere. (3) The titania-zirconia-based powder is obtained by dispersing the titania-zirconia-based powder (1) and (2) having

4. 发明专利

JP2002079094A HIGH TEMPERATURE NOx ABSORBING AND REDUCTION TYPE CATALYST 失效
公开(公告)号：JP2002079094A
公开(公告)日：2002-03-19
申请号：JP2000273764
申请日：2000-09-08
申请人： TOYOTA CENTRAL RES & DEV
发明人： TAKAHASHI NAOKI , MATSUNAGA SHINICHI , ANDOU CHIWA
IPC分类号： F01N3/08 , B01D53/94 , B01J20/04 , B01J21/10 , B01J23/58 , B01J32/00 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a high temperature NOx absorbing and reduction catalyst having a high NOx absorbing capacity even after a high temperature durability test at 750 deg.C for 5 hr and capable of sufficiently absorbing NOx even in a high temperature range of 600 deg.C or higher. SOLUTION: A noble metal and an NOx occluding material are supported on a carrier which comprises a composite oxide having a magnesia/alumin spinnel structure and has a specific surface area of 50 m2/g or more. This carrier has no lattice defect and magnesia is not detected even by X-ray diffraction and the lattice constant of the carrier is near to a theoretical value. Since the basicity of the carrier is high and magnesium is uniformly contained in a crystal lattice, the reactivity with the NOx occluding material basic in the same way is low and the solid phase reaction of the NOx occluding material and the carrier is suppressed.

5. 发明专利

JP2003275588A Co shift reaction catalyst 有权
标题翻译： CO转移反应催化剂
公开(公告)号：JP2003275588A
公开(公告)日：2003-09-30
申请号：JP2002078426
申请日：2002-03-20
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： YAMAZAKI KIYOSHI , YAMAMOTO TOSHIO , ANDOU CHIWA , TAKAHASHI NAOKI , SUDA AKIHIKO
IPC分类号： B01D53/94 , B01D53/86 , B01J23/63 , B01J35/10 , C01B3/16 , C01B3/48
CPC分类号： Y02P20/52
摘要： PROBLEM TO BE SOLVED: To provide a practical catalyst exhibiting high shift reaction activity even under a reaction condition of high space velocity and small deterioration of the activity even if being used under a condition such that the catalyst is exposed at a high temperature or the atmosphere is fluctuated. SOLUTION: A noble metal is supported on a support composed of a multiple oxide in which ceria and alumina are dispersed in nanometer scale. It is desirable for the multiple oxide to have a characteristic that the fine pore diameter becomes 3.5-100 nm the fine pore volume becomes ≥0.20 cc/g after being fired at 800°C for 5 hr. Alumina works as a barrier among the particles of ceria to suppress the grain growth of seria. Because the decrease of the oxygen storing and releasing ability of the ceria is suppressed further in such a way, the fluctuation of the atmosphere is mitigated to suppress the grain growth of the noble metal. The grain growth of both ceria and the noble metal is suppressed. COPYRIGHT: (C)2003,JPO
摘要翻译：待解决的问题：即使在空间速度高的反应条件下，即使在使催化剂在高温下暴露的条件下使用时，即使在高活性的反应条件下也能显示出高转化反应活性的实用催化剂或气氛波动。解决方案：贵金属负载在由氧化铈和氧化铝以纳米级分散的多重氧化物组成的载体上。多余氧化物优选具有细孔直径为3.5〜100nm的特性，在800℃下烧成5小时后，细孔容积为≥0.20cc/ g。氧化铝作为二氧化铈颗粒之间的屏障，以抑制丝网的晶粒生长。由于二氧化铈的氧气储存和释放能力的降低被进一步抑制，所以减轻了气氛的波动以抑制贵金属的晶粒生长。二氧化铈和贵金属的晶粒生长被抑制。版权所有（C）2003，JPO

6. 发明专利

JP2002239383A NOx SORPTION AND REDUCTION CATALYST AND METHOD FOR USING THE SAME 失效
公开(公告)号：JP2002239383A
公开(公告)日：2002-08-27
申请号：JP2001039915
申请日：2001-02-16
申请人： TOYOTA CENTRAL RES & DEV
发明人： TAKAHASHI NAOKI , MATSUNAGA SHINICHI , ANDOU CHIWA , TSUJI RYUSUKE , TAKADA YASUO
IPC分类号： F01N3/10 , B01D53/94 , B01J20/08 , B01J23/58 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide an NOx sorption and reduction catalyst which has a high NOx sorption capacity even after a high-temperature durability test (750 deg.C×5 hr), can sufficiently sorb NOx in a temperature range above 600 deg.C, and can exhibit a high NOx reduction rate and to provide a method for using the same. SOLUTION: This catalyst is prepared by infiltrating a noble metal and an NOx sorbent into a coat layer based on a support comprising a compound oxide having a magnesia/alumina spinel structure and a specific surface area of at least 50 m2/g and containing 8-20 wt.% alumina binder. The support is strongly basic and lowly reactive with the sorbent, so that the consumption of the sorbent by the reaction with the support can be reduced. Even when the sorbent undergoes a volume change after repeated NOx sorption and reduction, the alumina binder prevents the coat layer form being peeled.

7. 发明专利

JP2006102628A Sulfur oxide absorber and its manufacturing method, and emission gas purifying facility 有权
标题翻译：硫氧化物吸收器及其制造方法和排放气体净化设备
公开(公告)号：JP2006102628A
公开(公告)日：2006-04-20
申请号：JP2004292539
申请日：2004-10-05
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： TANAKA TOSHIYUKI , ANDOU CHIWA , MATSUNAGA SHINICHI
IPC分类号： B01J20/04 , B01D53/50 , B01D53/81 , B01D53/94 , B01J23/42 , F01N3/08
CPC分类号： Y02A50/2348 , Y02T10/24
摘要： PROBLEM TO BE SOLVED: To provide a means of increasing an absorption capacity of SO x , and at the same time, shifting a temperature where SO x is discharged in rich atmosphere to a higher-temperature region. SOLUTION: The constitution comprises a carrier 2 having at least the same specific surface area or more compared to MgAl 2 O 4 , a solid solution suppressing layer 4 formed at least on the surface of the carrier 2 to suppress the solid solution of Mg to the carrier, at least MgO 5 supported on the solid solution suppressing layer 4, and an oxidation catalyst metal 6 supported on the solid solution suppressing layer 4. Since the carrier having the same specific surface area or more compared to MgAl 2 O 4 is used, the absorption capacity of SO x increases remarkably. Further, the presence of MgO enables the keeping of the condition that SO x is absorbed up to the high-temperature region of about 600°C even in rich atmosphere to suppress the discharge. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供增加SO x 的吸收容量的方法，并且同时将SO x 的温度移位到丰富的气氛到更高的温度区域。＆lt; P＆gt;解决方案：该结构包括与MgAl 2 SB 4 O 4 / SB 4相比具有至少相同的比表面积或更大的载体2，形成在至少在载体2的表面上抑制Mg对载体的固溶，至少载持在固溶抑制层4上的MgO 5和负载在固溶抑制层4上的氧化催化剂金属6。与MgAl O 4 相比，具有相同的比表面积或更大，SO x 的吸收容量显着增加。此外，即使在富含气氛中，MgO的存在使得能够将SO SB 的状态保持到约600℃的高温区域以抑制放电。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2005095760A 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：JP2005095760A
公开(公告)日：2005-04-14
申请号：JP2003332496
申请日：2003-09-24
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： SAKANO KOJI , ANDOU CHIWA
IPC分类号： F01N3/10 , B01D53/94 , B01J23/20 , B01J29/48 , B01J32/00
摘要： PROBLEM TO BE SOLVED: To provide a catalyst which is capable of combusting an adsorbed high boiling point hydrocarbon from a lower temperature region and exhibits high cleaning activity even after the thermal duration. SOLUTION: The catalyst for cleaning exhaust gas consists of a main carrier consisting of a multiple oxide M-TiO X in which an oxide of at least one kind of metal M of Ta and Nb is solidly dissolved in one part of TiO 2 and SiO 2 colloid, an oxide having oxygen absorbing/desorbing ability, zeolite and a noble metal deposited at least on the main carrier. Although the reason is unknown, the dispersibility of noble metal deposited metal is drastically enhanced because of the inclusion of a small amount of SiO 2 colloid and the particle growth during the thermal duration is suppressed. Further, even in the state that the catalyst interface is covered with the high boiling hydrocarbon, the high boiling point hydrocarbon can be completely combusted from a low temperature region because oxygen is supplied to the catalyst interface. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种即使在热持续时间后也能够从较低温度区域燃烧吸附的高沸点烃并表现出高清洁活性的催化剂。解决方案：用于清洁废气的催化剂由主要载体组成，其由多重氧化物M-TiO X 组成，其中至少一种Ta和Nb的金属M的氧化物是牢固的溶解在一部分TiO 2 SBB和SiO 2 SB 2胶体中，具有氧吸收/解吸能力的氧化物，至少沉积在主载体上的沸石和贵金属。虽然原因尚不清楚，但是由于含有少量的SiO 2 胶体，贵金属沉积金属的分散性急剧增加，并且在热持续时间期间的颗粒生长被抑制。此外，即使在催化剂界面被高沸点烃覆盖的状态下，由于向催化剂界面供给氧，因此高沸点烃可以从低温区域完全燃烧。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JPH10249199A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH10249199A
公开(公告)日：1998-09-22
申请号：JP5761197
申请日：1997-03-12
申请人： TOYOTA CENTRAL RES & DEV
发明人： ANDOU CHIWA , TANAKA TOSHIYUKI , TAKAHASHI NAOKI
IPC分类号： B01D53/86 , B01D53/94 , B01J23/58
摘要： PROBLEM TO BE SOLVED: To enhance purification performance of NOx in transient combustion by preventing a reaction between an NOx occlusion element and a carrier in a high temp. region. SOLUTION: This catalyst is produced by depositing the NOx occlusion element and noble metal on the carrier consisting of complex oxide expressed by MgO.Al2 O3 prepared by a sol-gel method using magnesium salt and aluminum alkoxide as starting raw materials. Sine the carrier consisting of MgO.Al2 O3 is superior in heat resistance and low in reactivity with the NOx occlusion element, the purification performance of NOx after long use, is enhanced.

10. 发明专利

JP2004113898A Hydrogen generation catalyst 审中-公开
标题翻译：氢气发生催化剂
公开(公告)号：JP2004113898A
公开(公告)日：2004-04-15
申请号：JP2002279028
申请日：2002-09-25
申请人： Toyota Central Res & Dev Lab Inc , 株式会社豊田中央研究所
发明人： YAMAZAKI KIYOSHI , ANDOU CHIWA , SAKANO KOJI
IPC分类号： C01B3/40 , B01J21/04 , B01J23/46 , B01J32/00
CPC分类号： Y02P20/52
摘要： PROBLEM TO BE SOLVED: To provide a catalyst exhibiting a high hydrogen generating activity ranging from a low temperature region to a high temperature region, with superior heat resistance and suppressed against sulfur poisoning.
SOLUTION: This catalyst comprises a carrier containing at least θ-type alumina and a noble metal carried by the carrier. The θ-type alumina has a large specific area, the carried noble metal has no defect of being stabilized in an oxidized state, and is easily reduced to a metal state. Since the θ-type alumina has a strong acidic property, sulfur oxides are suppressed from coming close, and the sulfur oxides adsorbed in the carrier is easily released.
COPYRIGHT: (C)2004,JPO

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