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81. 发明专利

JPH0810575A NITROGEN OXIDES REDUCING METHOD 失效
公开(公告)号：JPH0810575A
公开(公告)日：1996-01-16
申请号：JP17321994
申请日：1994-06-30
申请人： TOYOTA CENTRAL RES & DEV
发明人： TANAKA TOSHIYUKI , YOKOTA KOJI
IPC分类号： B01D53/94 , F01N3/20 , F01N3/28
摘要： PURPOSE:To provide a nitrogen oxides reducing method capable of reducing and removing NOX by the action of CO under an oxygen excess atmosphere over the wide range of high temp. CONSTITUTION:This nitrogen oxides reducing method is applied for reducing nitrogen oxides contained in the exhaust gas in which the oxygen concn. is equal to or more than a stoichiometric ratio required for oxidizing a component to be oxidized in the exhaust gas, and nitrogen oxides in the exhaust gas is reduced by bringing the exhaust gas containing excess oxygen into contact with a nitrogen oxides reducing catalyst under the coexistence of CO.

82. 发明专利

JPH07246318A METHOD FOR REDUCING NOX 失效
公开(公告)号：JPH07246318A
公开(公告)日：1995-09-26
申请号：JP4108494
申请日：1994-03-11
申请人： TOYOTA CENTRAL RES & DEV
发明人： YOKOTA KOJI , FUKUI MASAYUKI , TAKI MASAHIRO , OSHIMA YUJIRO
IPC分类号： B01D53/86 , B01D53/94 , B01J29/54
摘要： PURPOSE:To efficiently reduce NOx at a low temp. by allowing a small amt. of hydrogen to coexist with NOx-contg. exhaust gas. CONSTITUTION:A catalyst is composed of a porous carrier having a zeolite type structure in which the molar ratio of SiO2 to Al2O3 is 10-200 and platinum carried on the porous carrier by >=0.1wt.%, and NOx-contg. exhaust gas is brought into contact with the catalyst under coexistence of gaseous hydrogen to reduce the NOx. Since the porous carrier has high hydrophobic property, the sticking a of steam to the surface of the catalyst is prevented and a reduction reaction of NOx proceeds smoothly.

83. 发明专利

JPH02177955A EXPOSURE EXPERIMENT DEVICE FOR ANIMAL 失效
公开(公告)号：JPH02177955A
公开(公告)日：1990-07-11
申请号：JP33268188
申请日：1988-12-28
申请人： TOYOTA CENTRAL RES & DEV
发明人： YAMADA KATSUHITO , OSHIMA MASUJI , MIYASHITA MASANORI , MATSUSHIMA SATORU , YOKOTA KOJI
IPC分类号： A61D7/00 , A61D7/04
摘要： PURPOSE:To stably supply organic solvent gas for a long time with uniform gas concentration by detecting the gas concentration in an exposure chamber, successively controlling the necessary quantity of solvent injection according to an injection period and injection time with this gas concentration as a feedback signal, evaporating injected solvent by a heater, completely gasifying the solvent and executing the dilution and mixing of fresh air. CONSTITUTION:Experimental animals in exposure chambers A1, A2 and A3 are kept in a suitable breeding environment by ventilation air, which is adjusted by a normal ventilation fan 119, damper 120 and rectifier 108, and a flush toilet 109. When exposure gas is supplied, the solvent injection quantity calculated by a controller II corresponding to the solvent gas concentration in the exposure chamber detected by a gas concentration detector I is injected by solvent injection devices 40a and 40b. Then, this solvent is evaporated in a gasification container 44 and made into the organic solvent gas. The organic solvent gas is diluted and mixed with the ventilation air to the prescribed exposure gas concentration by a throttle device 105 of a gasification device IV and the experimental animals in the exposure chambers are exposed. Thus, the uniform gas is supplied stably into the exposure chamber.

84. 发明专利

JP2006272288A Catalyst for purifying diesel exhaust gas 审中-公开
标题翻译：用于净化柴油机排气的催化剂
公开(公告)号：JP2006272288A
公开(公告)日：2006-10-12
申请号：JP2005099870
申请日：2005-03-30
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 , IWASAKI MASAOKI , YOKOTA KOJI , SAKANO KOJI
IPC分类号： B01J23/89 , B01D46/00 , B01D46/42 , B01D53/94 , B01J35/04 , F01N3/02 , F01N3/10 , F01N3/24 , F01N3/28
CPC分类号： B01J37/0244 , B01D53/9422 , B01D53/944 , B01D2255/202 , B01D2255/204 , B01D2255/20738 , B01D2255/407 , B01D2255/91 , B01D2255/9155 , B01D2258/012 , B01J23/894 , F01N3/0814 , F01N3/0842 , F01N2510/06 , F01N2570/14 , Y02A50/2344
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for purifying diesel exhaust gas capable of suppressing malfunction due to sulfur component in exhaust gas and furthermore improving a purification performance of PM and NO x . SOLUTION: A catalyst layer which consists of: a coat layer comprising an oxide carrier including iron oxide and ceria type oxide; and at least one kind of NO x absorber selected from noble metal deposited on the coat layer, alkali metal and alkali earth metal is formed on cell barrier walls of filter base material of a wall-flow structure. Oxygen released from the iron oxide and ceria type oxide is efficiently supplied to PM and, at the same time, PM is efficiently oxidized and purified by NO 2 released from the NO x absorber. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够抑制由于排气中的硫成分引起的故障的柴油机废气的净化用催化剂，进一步提高PM和NOS SB的净化性能。解决方案：一种催化剂层，其由以下组成：包含氧化物载体的涂层，所述氧化物载体包括氧化铁和二氧化铈型氧化物; 选自沉积在涂层上的贵金属，碱金属和碱土金属的至少一种NOS / SBS吸收剂形成在壁流结构的过滤器基材的隔壁上。从氧化铁和二氧化铈型氧化物释放的氧被有效地供给到PM中，同时，通过从NO x 释放的NO 2 有效地氧化和净化PM。吸收。版权所有（C）2007，JPO＆INPIT

85. 发明专利

JP2002095966A CATALYST FOR CO SHIFT REACTION 失效
公开(公告)号：JP2002095966A
公开(公告)日：2002-04-02
申请号：JP2000291981
申请日：2000-09-26
申请人： TOYOTA CENTRAL RES & DEV
发明人： YAMAZAKI KIYOSHI , YOKOTA KOJI , HIRABAYASHI TAKESHI
IPC分类号： C01B3/48 , B01J23/42 , B01J32/00 , C10K3/02 , H01M8/06
摘要： PROBLEM TO BE SOLVED: To provide a practical catalyst that exhibits especially high CO shift reactivity in the low-temperature region favorable to the shift of CO to H2 from the equilibrium theory. SOLUTION: This catalyst is constituted of a support in which at least one oxide selected from titania, silica, and zirconia is interspersed as a binder in a rutile titania powder and a noble metal supported by mainly rutile titania. The catalyst supported by a noble metal in rutile titania has high CO shift reactivity and can be prevented from being deteriorated in its CO shift reactivity by being converted into a honeycomb catalyst or a pellet catalyst by using at least one oxide selected from titania, silica, and zirconia as a binder.

86. 发明专利

JP2001276620A CATALYST FOR REFORMING HYDROCARBON 失效
公开(公告)号：JP2001276620A
公开(公告)日：2001-10-09
申请号：JP2000098911
申请日：2000-03-31
申请人： TOYOTA CENTRAL RES & DEV
发明人： YOKOTA KOJI , FUKUI MASAYUKI , TANAKA TOSHIYUKI , SUDA AKIHIKO , YAMAMOTO TOSHIO
IPC分类号： C01B3/40 , B01J23/46
摘要： PROBLEM TO BE SOLVED: To provide a catalyst for reforming hydrocarbon by which side reactions such as carbon deposition and the formation of methane is suppressed even after the elapse of a long time and high conversion of hydrocarbon, which is not attained in the conventional technique, is attained. SOLUTION: The catalyst is for converting a hydrocarbon to carbon monoxide and hydrogen by mixing air and/or steam with the hydrocarbon and is constituted of a rhodium and a spinel which is expressed by a chemical formula, MgO.xAl2O3 (X=0.8-1.0) and in which the crystal structure of Al2O3 is not present substantially.

87. 发明专利

JP2001012233A CATALYST DETERIORATION PREDICTION DEVICE 失效
公开(公告)号：JP2001012233A
公开(公告)日：2001-01-16
申请号：JP18589499
申请日：1999-06-30
申请人： TOYOTA CENTRAL RES & DEV
发明人： BABA NAOKI , YOKOTA KOJI , MATSUNAGA SHINICHI , KOJIMA SHINJI , OSAWA KATSUYUKI
IPC分类号： G01N33/00 , B01J23/38 , F01N3/20 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a deterioration prediction method of a catalyst free to use for selection of an optimum catalyst suitable for various using environments. SOLUTION: A deteriorating state of a catalyst is predicted by computing a catalyst temperature distribution (n+1) and an oxygen density distribution (n+1) in accordance with a catalyst precious metal grain diameter distribution (n) and a reaction rate distribution (n), computing the catalyst precious metal particle size distribution (n+1) in accordance with them and a poisoning quantity distribution (n+1), computing a frequency factor distribution (n+1) in accordance with this and the poisoning quantity distribution (n+1) and computing the reaction rate distribution (n+1) in accordance with this.

88. 发明专利

JPH11262666A NITROGEN OXIDES CLEANING CATALYST 失效
公开(公告)号：JPH11262666A
公开(公告)日：1999-09-28
申请号：JP7040598
申请日：1998-03-19
申请人： TOYOTA CENTRAL RES & DEV
发明人： KIZAKI YOSHIMI , SAKAMOTO TOSHIYUKI , MOTOHIRO TOMOMI , OKUMURA KOHEI , SHINJO HIROBUMI , YOKOTA KOJI , SUDA AKIHIKO , TERAO NAOHIRO
IPC分类号： B01D53/94 , B01J23/89
摘要： PROBLEM TO BE SOLVED: To efficiently remove nitrogen oxides even with a small quantity of a noble metal element and a hydrocarbon(HC) by constantly keeping the surface of a catalyst oxygen-free and using the noble metal element to reduce only oxygen generated by decomposing and dissociating nitrogen oxides. SOLUTION: The catalyst is constituted so as to have a double layer structure of a 1st catalyst layer 1, which uses a material having large oxygen occluding rate and on the surface of which the noble metal 3 is carried, and a 2nd catalyst layer formed to almost or fully cover the surface of the 1st catalyst layer except the surface, on which the noble metal is carried. As a result, the action of the noble metal, is drawn at most even in a small quantity and nitrogen oxides are efficiently removed even in an excessive oxygen atmosphere.

89. 发明专利

JPH11223143A EXHAUST EMISSION CONTROL METHOD OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11223143A
公开(公告)日：1999-08-17
申请号：JP2457398
申请日：1998-02-05
申请人： TOYOTA CENTRAL RES & DEV , HINO MOTORS LTD
发明人： YOKOTA KOJI , YAMADA KATSUNORI , MURAKAMI GIICHI
IPC分类号： F01N3/24 , F02D41/04
摘要： PROBLEM TO BE SOLVED: To control a ratio between an oxidation component and an oxidized component in exhaust gas without relying on a signal from an O2 sensor with high accuracy in a theoretical ratio, and remove a harmful component efficiently even when using natural gas etc., as a fuel. SOLUTION: Change in catalytic temperature at the time of changing a ratio between the oxidation component and oxidized component in exhaust gas flowing into catalyst is measured, and an air-fuel ratio is controlled in response to the ratio between the oxidation component and the oxidized component in the exhaust gas when the catalytic temperature becomes maximum. Catalyst outlet temperature becomes maximum in an air-fuel ratio in which the harmful component can be removed most efficiently in the catalyst, accurate control of air-fuel ratio can be carried out without using an O2 sensor, etc.

90. 发明专利

JPH0278437A PRODUCTION OF CATALYST FOR PURIFICATION OF EXHAUST GAS 失效
公开(公告)号：JPH0278437A
公开(公告)日：1990-03-19
申请号：JP23299588
申请日：1988-09-16
申请人： TOYOTA CENTRAL RES & DEV
发明人： HATTORI NAOKO , KIMURA MAREO , YOKOTA KOJI
IPC分类号： B01D53/94 , B01J23/40 , B01J23/89 , B01J37/02
摘要： PURPOSE:To obtain a catalyst for purification of exhaust gas not deteriorating purifying characteristics by impregnating a soln. prepd. by dissolving salts of Pt family elements in a nonaq. solvent into an inorg. carrier and by calcining this impregnated carrier. CONSTITUTION:When one or more kinds of Pt family elements such as Pt and Pd are supported on an inorg. carrier, a soln. prepd. by dissolving salts of the Pt family elements such as palladium acetate in a nonaq. solvent such as acetone is impregnated into the inorg. carrier and this impregnated carrier is calcined to obtain a catalyst for purification of exhaust gas. Since the soln. is not acidic, the salts do not react with the inorg. carrier and the catalytic activity to CO, HC and NOx in exhaust gas is not deteriorated.

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