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31. 发明专利

JP2004283833A Catalyst for purifying exhaust gas 有权
公开(公告)号：JP2004283833A
公开(公告)日：2004-10-14
申请号：JP2004170971
申请日：2004-06-09
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： YOSHIDA TAKESHI , MURACHI MIKIO , TSUJI SHINJI , ISHIKAWA MICHIO
IPC分类号： B01D53/94 , B01J23/58
CPC分类号： Y02C20/10
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for purifying an exhaust gas wherein an NO X absorbing material is highly dispersed and carried. SOLUTION: This catalyst can be obtained by carrying a noble metal on an amorphous composite oxide consisting of an oxide such as alumina and the NO X absorbing material. As the NO X absorbing material is highly dispersed in the carrier, a reaction of the NO X absorbing material and the carrier is suppressed and heat resistance is surely gained. Even if sulfur poisoning arises, the growth of a sulfate is suppressed and SO X can be easily eliminated and therefore this catalyst is excellent in an NO X absorbing capacity. COPYRIGHT: (C)2005,JPO&NCIPI

32. 发明专利

JP2004218548A Abnormality detection device of fuel reformer 审中-公开
标题翻译：燃油改造器异常检测装置
公开(公告)号：JP2004218548A
公开(公告)日：2004-08-05
申请号：JP2003007549
申请日：2003-01-15
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SAKURAI KAZUHIRO , ITO TAKAAKI , HYODO YOSHIHIKO , YOSHIDA TAKESHI
IPC分类号： F02M27/02 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To easily detect an abnormality of a fuel reformer.
SOLUTION: This abnormality detection device of of fuel reformer detects the abnormality of the fuel reformer 20 which reforms a fuel supplied to an internal combustion engine 2. This abnormality detection device of fuel reformer comprises: a physical property measuring means for measuring physical property of the fuel passing through the fuel reformer 20; and a determining means for determining presence or absence of the abnormality of the fuel reformer based on comparison between a measured value of the physical property of the fuel measured in the physical property measuring means and a predetermined reference value.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了容易地检测燃料重整器的异常。解决方案：燃料重整器的这种异常检测装置检测燃料重整器20的异常，燃料重整器20改变供给内燃机2的燃料。燃料重整器的异常检测装置包括：物理性质测量装置，通过燃料重整器20的燃料的性质; 以及确定装置，用于基于在物理属性测量装置中测量的燃料的物理性质的测量值与预定参考值之间的比较来确定燃料重整器的异常的存在或不存在。版权所有（C）2004，JPO＆NCIPI

33. 发明专利

JP2000279810A CATALYST FOR CLEANING OF EXHAUST GAS 失效
公开(公告)号：JP2000279810A
公开(公告)日：2000-10-10
申请号：JP8901199
申请日：1999-03-30
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI , UENO HIDEAKI , IKEDA YASUO , SENDA KOJI
IPC分类号： B01D53/94 , B01J23/54 , B01J23/58 , F01N3/08 , F01N3/24 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To improve durability by controlling a drop of a NOx-occluding capacity in the case of using an alkali metal as a NOx-occluding element. SOLUTION: This catalyst contains a base material, a catalyst-carrying layer covered on a surface of the base material, and a noble metal and an alkali metal which are supported by the catalyst-carrying layer. In this case, silicon is contained in a porous oxide particle of the catalyst-carrying layer. The alkali metal is allowed to react with the silicon and held in the catalyst- carrying layer. Thereby, the alkali metal is inhibited from transferring into a cordierite-made base material.

34. 发明专利

JP2000026122A PRODUCTION OF COMPLEX METAL OXIDE 失效
公开(公告)号：JP2000026122A
公开(公告)日：2000-01-25
申请号：JP19336498
申请日：1998-07-08
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI , OGURA YOSHITSUGU
IPC分类号： C01G23/00 , B01J21/06 , B01J32/00
摘要： PROBLEM TO BE SOLVED: To produce Al-Ti comlex oxide having a sufficiently uniform compsn. in an easy and stable manner. SOLUTION: A substd. aluminum alkoxide obtd. by substituting a chelating agent for an alkoxyl group of an aluminum alkoxide is mixed with a titanium alkoxide in an org. solvent to prepare a soln., the alkoxides are hydrolyzed and drying and firing are carried out. Since the substd. aluminum alkoxide and the titanium alkoxide are hydrolyzed at about the same rate, the formation of free Al2O3, is suppressed and the objective uniform Al-Ti complex oxide is produced.

35. 发明专利

JPH10258232A CATALYST FOR EXHAUST GAS PURIFICATION AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH10258232A
公开(公告)日：1998-09-29
申请号：JP27764997
申请日：1997-10-09
申请人： TOYOTA MOTOR CORP
发明人： OGURA YOSHITSUGU , YOSHIDA TAKESHI
IPC分类号： B01D53/86 , B01D53/94 , B01J20/04 , B01J23/42 , B01J23/48 , B01J23/58 , B01J23/89 , B01J33/00 , B01J35/02
摘要： PROBLEM TO BE SOLVED: To further improve the durability by increasing the inhibitive effects upon the poisoning of an occlusion material by sulfur and at the same time, inhibiting the sintering of a catalytic noble metal, in an occlusion reduction-type catalyst. SOLUTION: This catalyst for exhaust gas purification comprises a core part 10 made up of a first carrier and an NOx occlusion material contained in the first carrier and a catalyst carrying layer 11 made up of a second carrier and a catalytic noble metal contained in the second carrier and formed on the surface of the core part 10. SOx is prevented from reaching the core part 10 by the catalyst carrying layer 11 and the sintering of the catalytic noble metal is prevented from occurring as the NOx occlusion material is separated from the catalytic noble metal.

36. 发明专利

JPH09248457A HIGH HEAT-RESISTANCE CATALYST 失效
公开(公告)号：JPH09248457A
公开(公告)日：1997-09-22
申请号：JP6088896
申请日：1996-03-18
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI
IPC分类号： B01D53/86 , B01D53/94 , B01J23/38 , B01J23/42 , B01J23/63
摘要： PROBLEM TO BE SOLVED: To obtain a catalyst enhanced in heat resistance in a high oxygen concn: atmosphere and excellent in high temp. durability by constituting amorphous composite oxide of alumina, titanium oxide and a catalyst noble metal element as a high heat-resistance catalyst. SOLUTION: Alumina and titanium oxide are mixed in a mol ratio of about 1/100-1/2 and a catalyst norble metal element such as platinum or rhodium is added to the resulting mixture in an amt. of about 20wt.% or less in terms of metal and these three components constitute amorphous composite oxide. By this method, the catalyst noble metal element is widely dispersed in alumina and titanium oxide large in specific surface area and heat resistance is enhanced and sintering at high temp. is hard to generate and, therefore, high ternary activity is obtained after high temp. endurance. If cerium oxide is mixed in addition to these three components, fluctuations of an air/fuel ratio condition are absorbed by oxygen occluding/discharge action of cerium and ternary activity in the vicinity of stoichiometry is enhanced.

37. 发明专利

JPH0724316A PRODUCTION OF CATALYST CARRIER 失效
公开(公告)号：JPH0724316A
公开(公告)日：1995-01-27
申请号：JP17330493
申请日：1993-07-13
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI , MURACHI MIKIO , TAGUCHI MICHIO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/02 , B01J23/58 , B01J32/00 , B01J35/04
摘要： PURPOSE:To enhance the catalytic capacity by uniformly dispersing and arranging catalyst main body on the surface of a catalyst carrier to increase the specific surface area of the catalyst carrier by producing the catalyst carrier by reacting a metal alkoxide mixture containing alkoxide represented by a specific formula by a sol-gel method. CONSTITUTION:In a catalyst device for purifying the exhaust gas of a car, fine particles of a noble metal are dispersed and arranged on the surface of a porous catalyst carrier having a large surface area as a catalyst main body. In this case, the catalyst carrier is produced by reacting a metal alkoxide mixture containing at least alkoxide represented by formula R-Me-O-Al-(OR')2 (wherein R is an org. group, Me is at least one element selected from alkali metal and alkaline earth metal, R' is an alkyl group and the number of carbon atoms of R and R' is R#R'') by a sol-gel method. By this method, the catalyst main body is uniformly dispersed and arranged on the surface of the catalyst carrier and the specific surface area of the carrier is increased to enhance the catalytic capacity.

38. 发明专利

JP2000051696A PRODUCTION OF COMPOSITE METAL CATALYST 失效
公开(公告)号：JP2000051696A
公开(公告)日：2000-02-22
申请号：JP22461498
申请日：1998-08-07
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI
IPC分类号： B01D53/94 , B01J23/42 , B01J23/58 , B01J23/63
摘要： PROBLEM TO BE SOLVED: To produce a catalyst enhanced in heat resistance and having high purifying capacity even after a high temp. durability test. SOLUTION: Substd. Al alkoxide wherein at least one alkoxide group of Al alkoxide is substd. with a chelating agent and a compd. containing at least a compounding metal element of an NOx occluding element and a noble metal and soluble in an org. solvent are mixed in an org. solvent and, after at least Al alkoxide is hydrolyzed, the whole is dried and baked to form uniform composite metal oxide of Al and the compounding metal element. Therefore, the obtained composite metal oxide has a large specific surface area and the dispersibility of the NOx occluding element and the noble metal is enhanced and heat resistance is enhanced.

39. 发明专利

JPH09122486A HIGHLY HEAT-RESISTANT CATALYST CARRIER 失效
公开(公告)号：JPH09122486A
公开(公告)日：1997-05-13
申请号：JP28299695
申请日：1995-10-31
申请人： TOYOTA MOTOR CORP
发明人： YOSHIDA TAKESHI , MURACHI MIKIO , TSUJI SHINJI
IPC分类号： B01D53/94 , B01J23/02 , B01J23/10
摘要： PROBLEM TO BE SOLVED: To cause an NOX occlusion material to be carried on a carrier in most effectively dispersed manner and at the same time, prevent the occlusion material from being scattered, and enhance its resistance against sulfur poisoning. SOLUTION: This highly heat-resistant catalyst carrier is composed of an amorphous oxide compounded, with at least, one type of substance selected from (i) an oxide of NOX occluding element, (ii) Al2 O3 and (iii) TiO2 , ZrO2 and SiO2 . The components (iii) are acid, and at least, one of these components is complex as it is most effectively dispersed. Therefore, the NO2 occluding element is prevented from becoming poisoned by sulfur as SOX is prevented from approaching the NOX occluding element. At the same time, the power of the NOX occluding element to bind itself to the carrier is stronger, so that the NOX occluding element is prevented from becoming scattered at high temperatures.

40. 发明专利

JPH11114422A CATALYST FOR CLEANING EXHAUST GAS 失效
公开(公告)号：JPH11114422A
公开(公告)日：1999-04-27
申请号：JP28019597
申请日：1997-10-14
申请人： TOYOTA MOTOR CORP
发明人： OGURA YOSHITSUGU , YOSHIDA TAKESHI
IPC分类号： B01D53/94 , B01J23/56 , B01J23/63
摘要： PROBLEM TO BE SOLVED: To provide an NOX occlusion reduction type catalyst for cleaning an exhaust gas which has a still more enhanced durability. SOLUTION: The catalyst for cleaning exhaust gas is constituted of a core part 10 consisting of a first carrier and NOX occlusion material contained in the first carrier and of a catalyst-carrying layer 11 which consists of a second carrier and catalytic noble metal contained in the second carrier and is formed on the surface of the core part 10. A part of the NOX occlusion material is contained in the catalyst carrying layer 11. NOX cleaning activity in early stages is enhanced by the NOX occlusion material contained in the catalyst carrying layer 11 and the temperature window of NOX purification is spread. Further, SOX is inhibited from reaching the core part 10 by the catalyst carrying layer 11. Sintering of the catalytic noble metal is prevented because catalytic noble metal is separated from the NOX occlusion material.

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