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1. 发明专利

JP2006043637A 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：JP2006043637A
公开(公告)日：2006-02-16
申请号：JP2004231150
申请日：2004-08-06
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： SOFUE YUICHI , TANAKA TOSHIYUKI
IPC分类号： B01J23/58 , B01D53/94 , F01N3/10
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning an exhaust gas which suppresses poisoning by sulfur and suppresses sintering of a catalytic noble metal. SOLUTION: In the catalyst for cleaning the exhaust gas prepared by carrying a NOx occlusion agent selected from a group comprising a alkaline earth metal and a rare earth element, and an noble metal for a catalyst on a carrier comprising titania-zirconia-alumina powders, the carrier comprising the titania-zirconia-alumina powders is porous and the volume of pores with a diameter of 20 nm or less is 104 cc/g or more. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于清洁排气的催化剂，其抑制硫中毒并抑制催化贵金属的烧结。解决方案：在用于清洁通过携带选自含有碱土金属和稀土元素的组中的NOx吸留剂和用于催化剂的贵金属制备的废气的催化剂中，所述载体包含二氧化钛 - 氧化锆 - 氧化铝粉末，包含二氧化钛 - 氧化锆 - 氧化铝粉末的载体是多孔的，并且直径为20nm或更小的孔的体积为104cc / g或更大。版权所有（C）2006，JPO＆NCIPI

2. 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.

3. 发明专利

JPH08192051A CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH08192051A
公开(公告)日：1996-07-30
申请号：JP439695
申请日：1995-01-13
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： KIMURA MAREO , KAWAI YUZO , YOKOTA KOJI , TAKAHASHI NAOKI , TANAKA TOSHIYUKI , MIYOSHI NAOTO , SUZUKI HIROMASA , OGAWA OSAMU
IPC分类号： B01D53/86 , B01D53/94 , B01J23/56 , B01J23/58 , B01J23/63
摘要： PURPOSE: To make a carrier less liable to adsorb SOx by improvement and to prevent the poisoning of an NOx occluding material by sulfur. CONSTITUTION: This catalyst consists of a carrier made of Ti-Zr double oxides, an NOx occluding material selected from among alkali metals, alkaline earth metals and rare earth elements and carried on the carrier and a catalytic noble metal carried on the carrier. Since the heat resistance and acidity of the carrier is improved by the Ti-Zr double oxides, the SOx adsorption of the carrier is reduced, the poisoning of the NOx occluding material by sulfur is prevented and this catalyst is excellent in durability of NOx removing performance.

4. 发明专利

JPH07155602A NITROGEN OXIDE REDUCING CATALYST AND USE THEREOF 失效
公开(公告)号：JPH07155602A
公开(公告)日：1995-06-20
申请号：JP34064393
申请日：1993-12-07
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： TANAKA TOSHIYUKI , YOKOTA KOJI , MATSUMOTO SHINICHI
IPC分类号： B01D53/86 , B01D53/94 , B01J23/64 , B01J23/652
摘要： PURPOSE:To purify NOX over a wide range of a high temp. region under an oxygen excessive atmosphere. CONSTITUTION:A nitrogen oxide reducing catalyst consists of a porous carrier, at least one kind of a metal selected from alkali metals supported on the porous carrier and platinum and molybdenum supported on the porous carrier and the support amt. of molybdenum is set to 3 or more with respect to platinum in a mol ratio and the support amt. of alkali metal is set to 0.001-15 with respect to platinum in a mol ratio. The nitrogen oxide reducing catalyst is arranged on the upstream or downstream side of a nitrogen oxide purifying catalyst of which the purifying activity temp. is 250-350 deg.C under an oxygen excessive atmosphere to be brought into contact with nitrogen oxide.

5. 发明专利

JP2008012501A METHOD FOR CARRYING NOx OCCLUSION MATERIAL 有权
标题翻译：携带NOx氧化物质的方法
公开(公告)号：JP2008012501A
公开(公告)日：2008-01-24
申请号：JP2006189332
申请日：2006-07-10
申请人： Cataler Corp , Toyota Central Res & Dev Lab Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社キャタラー , 株式会社豊田中央研究所
发明人： YAZAWA YOSHITERU , TANAKA TOSHIYUKI , IMAI HIROTO
IPC分类号： B01J37/02 , B01D53/94 , B01J23/58 , B01J37/34 , F01N3/10
摘要： PROBLEM TO BE SOLVED: To provide a catalyst capable of sufficiently uniformly carrying a Ba-Ti composite oxide or the like so as to be able to prevent a deterioration due to sulfur poisoning. SOLUTION: A porous oxide is impregnated with a composite oxide precursor aqueous solution that is prepared by dissolving a first compound containing at least one type of element selected from among alkaline earth metals and rare earth elements, a second compound containing at least one type of element selected from among 3rd group elements, 4th group elements, and transition metals, a third compound having polydentate ligands, and hydrogen peroxide in water and is adjusted to have a pH of 4 to 7. The porous oxide is dried and then fired. The concentration of the composite oxide precursor can be increased while delaying the gelation, so that a sufficient amount of the composite oxide precursor can be carried in a single step of water absorption and impregnation. Thus, the structure of the composite oxide will never be destroyed. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：提供能够充分均匀地携带Ba-Ti复合氧化物等的催化剂，以便能够防止由于硫中毒引起的劣化。解决方案：多孔氧化物被复合氧化物前体水溶液浸渍，所述复合氧化物前体水溶液通过将含有选自碱土金属和稀土元素中的至少一种元素的第一化合物溶解，所述第一化合物含有至少一种选自第三组元素，第四组元素和过渡金属的元素类型，具有多齿配体的第三化合物和水中的过氧化氢，并将其调节至pH为4至7.将多孔氧化物干燥，然后烧制。可以提高复合氧化物前体的浓度，同时延缓凝胶化，使得在吸水和浸渍的一个步骤中可以携带足够量的复合氧化物前体。因此，复合氧化物的结构将永远不会被破坏。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2005169280A 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：JP2005169280A
公开(公告)日：2005-06-30
申请号：JP2003413435
申请日：2003-12-11
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： KAWAMURA TETSUO , TANAKA TOSHIYUKI
IPC分类号： F01N3/08 , B01D53/94 , B01J23/58 , B01J35/10 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas with which the decomposition of sulfate is promoted. SOLUTION: The catalyst for cleaning exhaust gas is composed of a catalytic carrier and a noble metal catalyst and a NOx adsorbing material which are supported with the catalytic carrier, wherein the catalytic carrier is formed of a porous oxide having ≥0.8 mL/g pore volume. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于清洁促进硫酸盐分解的废气的催化剂。解决方案：用于清洁废气的催化剂由催化载体和负载在催化载体上的贵金属催化剂和NOx吸附材料组成，其中催化载体由≥0.8mL/ g孔体积。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JPH08117602A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH08117602A
公开(公告)日：1996-05-14
申请号：JP25697694
申请日：1994-10-21
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： OGAWA OSAMU , MIYOSHI NAOTO , KIMURA MAREO , KAWAI YUZO , TAKAHASHI NAOKI , TANAKA TOSHIYUKI
IPC分类号： B01J23/58 , B01D53/34 , B01D53/56 , B01D53/81 , B01D53/86 , B01D53/94 , B01J20/04
摘要： PURPOSE: To prevent the deterioration in NOx purification performance after Cong term duration by preventing the sulfur poisoning of a NOx absorbent while keeping initial NOx purifying rate. CONSTITUTION: This catalyst is made by carrying the NOx absorbent, selected from a Ti-Zr conjugate oxide, an alkali metal, an alkaline earth metal, a rare earth element, and a catalyst noble metal on an alumina carrier. The acidity of the alumina carrier itself is increased by carrying the Ti-Zr conjugate oxide and since it is considered that the adsorption of SOx to alumina is decreased with the increase of the acidity of the alumina carrier because of the acidity of SOx, the sulfur poisoning of the NOx absorbent due to the absorption of SOx is prevented.

8. 发明专利

JPH0596132A CATALYST SYSTEM FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JPH0596132A
公开(公告)日：1993-04-20
申请号：JP28923691
申请日：1991-10-07
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： MURAKI HIDEAKI , TANAKA TOSHIYUKI , KATO KENJI , KIHARA TETSUO
IPC分类号： B01D53/94 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/72 , B01J29/06 , B01J29/42 , B01J35/02 , F02B3/06
摘要： PURPOSE:To reduce NO2 contamination on the road in an area around a highway by arranging noble metal based catalysts, such as Pt, Rh in a high exhaust temp. region upstream of the exhaust system and simultaneously arranging transition metal/alumina based catalysts, etc., in a low exhaust temp. region downstream of it. CONSTITUTION:In a joint part 3 near an exhaust manifold 2 of lean-burn gasoline engines or diesel engines, a noble metal catalyst consisting of one component of Pt, Rh or Pd or their combination is arranged. Next, in the 1st container 4 on the downstream side, a transition metal/alumina based catalyst or a transition metal/zeolite based catalyst is arranged. Thereby CO and HC are purified by the catalyst in the high exhaust temp. region, while on the other hand, unreacted NO is oxidized to NO2. Then the NO2 is reduced to NO by the catalyst in the low exhaust temp. region to reduce NO2 contamination in an area around a highway.

9. 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.

10. 发明专利

JPH0810574A NITROGEN OXIDES PURIFYING METHOD 失效
公开(公告)号：JPH0810574A
公开(公告)日：1996-01-16
申请号：JP17321294
申请日：1994-06-30
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： YOKOTA KOJI , FUKUI MASAYUKI , TANAKA TOSHIYUKI , TAKI MASAHIRO , OSHIMA YUJIRO , MATSUMOTO SHINICHI
IPC分类号： B01D53/94 , B01J23/652
摘要： PURPOSE:To purify NOX in an exhaust gas in a low temp. range at a high removing rate under an oxygen excess atmosphere by the action of hydrogen coexisting in the exhaust gas. CONSTITUTION:This nitrogen oxides purifying method is a nitrogen oxides reduction method for reducing nitrogen oxides contained in the exhaust gas in which the oxygen concn. is equal to or above the stoichiometric ratio required for oxidizing a component to be oxidized in the exhaust gas, and the exhaust gas containing excess oxygen coexisting with hydrogen is brought into contact with a nitrogen oxides reducing catalyst constituted so as to contain a noble metal element and molybdenum carried on a porous carrier.

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