Toshitaka Tanabe
Toshitaka Tanabe, Aichi-Ken JP
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20090069174 | CATALYST FOR PURIFICATION OF EXHAUST GAS AND METHOD OF MANUFACTURING THE SAME - A catalyst for purification of exhaust gases, produced by use of a catalyst component A, a catalyst component B, and a binder, the catalyst component A being produced by supporting Rh on a catalyst support for Rh, having a CO | 03-12-2009 |
20090104088 | Exhaust Gas Purification System for Internal Combustion Engine - An exhaust gas purification system includes: a catalyst ( | 04-23-2009 |
20090266053 | EXHAUST GAS PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - An exhaust gas purification system includes: at least two catalysts ( | 10-29-2009 |
20100004117 | METAL OXIDE CATALYST CARRIER PARTICLE AND EXHAUST GAS PURIFICATION CATALYST - A metal oxide catalyst carrier particle has a center portion and an outer skin portion each containing a first metal oxide and a second metal oxide. The center portion and the outer skin portion are different in composition. The mole fraction of the metal of the first metal oxide is higher in the center portion than in the outer skin portion and the mole fraction of the metal of the second metal oxide is higher in the outer skin portion than in the center portion. The second metal oxide is selected from the group consisting of rare earth oxides, except for ceria, and alkali earth metal oxides. In addition, platinum is supported on the metal oxide catalyst carrier particle, thus forming an exhaust gas purification catalyst. | 01-07-2010 |
20100293921 | APPARATUS AND METHOD FOR REGENERATING CATALYST FOR PURIFYING EXHAUST GAS - A regeneration apparatus comprises a heater | 11-25-2010 |
Toshitaka Tanabe, Aichi-Gun JP
Patent application number | Description | Published |
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20090105070 | Catalyst for Purification of Exhaust Gas - A catalyst for purification of exhaust gas, comprising: | 04-23-2009 |
20090170689 | Catalyst for Purification of Exhaust Gas, Regeneration Method for the Catalyst, and Apparatus and Method for Purification of Exhaust Gas Using the Catalyst - A catalyst for purification of exhaust gas in which a noble metal is supported on a metal-oxide support wherein, in a oxidation atmosphere, the noble metal exists on the surface of the support in high oxidation state, and the noble metal binds with a cation of the support via an oxygen atom on the surface of the support to form a surface oxide layer and, in a reduction atmosphere, the noble metal exists on the surface of the support in a metal state, and an amount of noble metal exposed at the surface of the support, measured by CO chemisorption, is 10% or more in atomic ratio to a whole amount of the noble metal supported on the support. | 07-02-2009 |
20100227757 | INORGANIC MIXED OXIDE AND CATALYST FOR PURIFICATION OF EXHAUST GAS USING THE SAME - A particulate inorganic mixed oxide comprising: aluminum; zirconium; cerium; and first and second additional elements each selected from the group consisting of rare earth elements other than cerium and alkaline earth elements, wherein | 09-09-2010 |
Toshitaka Tanabe, Aichi JP
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20090099013 | INORGANIC OXIDE AND CATALYST FOR PURIFICATION OF EXHAUST GAS OBTAINED BY USING THE SAME - A particulate inorganic oxide contains an aluminum oxide, a metal oxide forming no composite oxide with an aluminum oxide, and at least one additional element selected from the group consisting of rare earth elements and alkaline earth elements. In the inorganic oxide, a percentage content of the additional element to a total amount of aluminum in the aluminum oxide, a metal element in the metal oxide, and the additional element is in a range from 1.1 at % to 8.0 at % in terms of element content. At least 80% of primary particles in the inorganic oxide have a particle diameter of 100 nm or smaller. At least a part of the primary particles have a surface concentrated region where a percentage content of the additional element is locally increased in a surface layer part thereof. The content of the additional element in the surface concentrated region to a whole amount of the inorganic oxide is in a range from 0.06% by mass to 0.98% by mass in terms of oxide amount. | 04-16-2009 |
20090149321 | INORGANIC OXIDE AND CATALYST FOR PURIFICATION OF EXHAUST GAS OBTAINED BY USING THE SAME - A particulate inorganic oxide contains an aluminum oxide, a metal oxide forming no composite oxide with an aluminum oxide, and at least one additional element selected from the group consisting of rare earth elements and alkaline earth elements. In the inorganic oxide, a percentage content of the aluminum oxide to a total amount of aluminum in the aluminum oxide, a metal element in the metal oxide, and the additional element is in a range from 48 at % to 92 at % in terms of element content. At least 80% of primary particles in the inorganic oxide have a particle diameter of 100 nm or smaller. At least a part of the primary particles have a surface concentrated region where a percentage content of the additional element is locally increased in a surface layer part thereof. The content of the additional element in the surface concentrated region to a whole amount of the inorganic oxide is in a range from 0.06% by mass to 0.98% by mass in terms of oxide amount. | 06-11-2009 |
Toshitaka Tanabe, Nagakute-Shi JP
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20130029838 | EXHAUST GAS PURIFYING CATALYST - An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide. | 01-31-2013 |
20150045212 | EXHAUST GAS PURIFICATION CATALYST - An exhaust gas purification catalyst includes a composite oxide support, and a precious metal catalyst supported on the composite oxide support. The composite oxide support includes alumina, zirconia, ceria, a first additive element oxide and a second additive element oxide. The first additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. The second additive element oxide contains an additive element selected from the group consisting of rare earth elements excluding cerium and alkali earth elements. In the composite oxide support, alumina is contained in a range of 30 to 40% by mass and zirconia is contained in a range of 36 to 46% by mass. | 02-12-2015 |
20150080211 | IRON OXIDE-ZIRCONIA COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION CATALYST - A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of Fe | 03-19-2015 |
20150266004 | CATALYST SUPPORT FOR PURIFICATION OF EXHAUST GAS, CATALYST FOR PURIFICATION OF EXHAUST GAS USING THE SAME, AND METHOD FOR PRODUCING THE CATALYST SUPPORT FOR PURIFICATION OF EXHAUST GAS - A catalyst support for purification of exhaust gas includes a porous composite metal oxide, the porous composite metal oxide containing alumina, ceria, and zirconia and having an alumina content ratio of from 5 to 80% by mass, wherein after calcination in the air at 1100° C. for 5 hours, the porous composite metal oxide satisfies a condition such that standard deviations of content ratios (as at % unit) of aluminum, cerium and zirconium elements are each 19 or less with respect to 100 minute areas (with one minute area being 300 nm in length×330 nm in width) of the porous composite metal oxide, the standard deviation being determined by energy dispersive X-ray spectroscopy using a scanning transmission electron microscope equipped with a spherical aberration corrector. | 09-24-2015 |
20150273437 | COMPOSITE OXIDE MATERIAL AND EXHAUST GAS PURIFYING CATALYST USING THE SAME - The object of the present invention is to provide an oxygen storage material used for an exhaust gas purifying catalyst that is superior in stability at high temperatures. The composite oxide material of the invention comprises crystalline particles of a ceria-zirconia composite oxide with a pyrochlore structure and crystals of a lanthana-zirconia composite oxide with a pyrochlore structure existing on the particle surface, in which the crystals of the lanthana-zirconia composite oxide is solidly dissolved in at least a part of the surface of the crystalline particles of ceria-zirconia composite oxide. In the composite oxide material according to the present invention, the pyrochlore structure of the ceria-zirconia composite oxide is stabilized, and the decrease in oxygen storage capacity resulting from phase shift into the fluorite structure is suppressed. | 10-01-2015 |
20150290621 | COMPOSITE OXIDE MATERIAL AND EXHAUST GAS PURIFYING CATALYST USING THE SAME - The object of the present invention is to provide an oxygen storage material used for an exhaust gas purifying catalyst that is superior in stability at high temperatures. The composite oxide material of the invention comprises crystalline particles of a ceria-zirconia composite oxide with a pyrochlore structure and crystals of a ceria-zirconia composite oxide with a fluorite structure on the particle surface, in which the crystals of the ceria-zirconia composite oxide with a fluorite structure contains zirconia in a larger amount than that of ceria, and such crystals are integrated with the crystalline particles of the ceria-zirconia composite oxide with a pyrochlore structure. The composite oxide material of the invention has high oxygen storage capacity that is less likely to decrease at high temperatures. | 10-15-2015 |
Toshitaka Tanabe US
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20150273437 | COMPOSITE OXIDE MATERIAL AND EXHAUST GAS PURIFYING CATALYST USING THE SAME - The object of the present invention is to provide an oxygen storage material used for an exhaust gas purifying catalyst that is superior in stability at high temperatures. The composite oxide material of the invention comprises crystalline particles of a ceria-zirconia composite oxide with a pyrochlore structure and crystals of a lanthana-zirconia composite oxide with a pyrochlore structure existing on the particle surface, in which the crystals of the lanthana-zirconia composite oxide is solidly dissolved in at least a part of the surface of the crystalline particles of ceria-zirconia composite oxide. In the composite oxide material according to the present invention, the pyrochlore structure of the ceria-zirconia composite oxide is stabilized, and the decrease in oxygen storage capacity resulting from phase shift into the fluorite structure is suppressed. | 10-01-2015 |
Toshitaka Tanabe, Nagakute-Shi, Aichi-Ken JP
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20160121302 | CERIA-ZIRCONIA-BASED COMPOSITE OXIDE AND METHOD FOR PRODUCING SAME, AND CATALYST FOR EXHAUST GAS PURIFICATION INCLUDING CERIA-ZIRCONIA-BASED COMPOSITE OXIDE - A ceria-zirconia-based composite oxide including a composite oxide containing ceria and zirconia, wherein the ceria-zirconia-based composite oxide contains at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in an amount of 0.5 to 5.0 mol % relative to a total amount of the cations contained in the ceria-zirconia-based composite oxide, where the ratio of the content of both cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium in the ceria-zirconia-based composite oxide to the content of zirconium therein ([cerium and the at least one member selected from the group consisting of praseodymium, lanthanum, and yttrium]:[zirconium]) is in the range of 43:57 to 48:52 by mole ratio. | 05-05-2016 |