Patent application number | Description | Published |
20100016149 | OXYGEN STORAGE/RELEASE MATERIAL AND EXHAUST GAS PURIFYING CATALYST COMPRISING THE SAME - There is provided an oxygen storage/release material using a rare earth oxysulfate or oxysulfide, which has a high oxygen storage/release capacity even at lower temperatures. The oxygen storage/release material of the present invention comprises a compound consisting of Pr | 01-21-2010 |
20100130350 | OXYGEN STORAGE/RELEASE MATERIAL AND EXHAUST GAS PURIFYING CATALYST COMPRISING THE SAME - There is provided an oxygen storage/release material using a rare earth oxysulfate or oxysulfide, which has a high oxygen storage/release capacity even at lower temperatures. The oxygen storage/release material of the present invention comprises a compound consisting of Pr | 05-27-2010 |
20110152072 | CORE-SHELL STRUCTURE, PROCESS FOR ITS PRODUCTION, AND EXHAUST GAS PURIFICATION CATALYST COMPRISING CORE-SHELL STRUCTURE - There is provided a core-shell structure characterized by comprising a core section composed mainly of a first metal oxide and a shell section composed mainly of a second metal oxide different from the first metal oxide, wherein the thickness of the shell section is no greater than 20 nm. | 06-23-2011 |
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 |
20150298099 | COMPLEX OXIDE PARTICLES AND EXHAUST GAS PURIFYING CATALYST USING THE SAME - This invention provides complex oxide particles as carriers that are capable of imparting high heat tolerance and oxygen storage capacity to a catalyst and an exhaust gas purifying catalyst for automobiles using the same. The complex oxide particles comprise ceria-zirconia complex oxide, alumina, yttria, and at least one oxide of an element selected from among rare earth elements other than cerium and yttrium and alkaline earth metals, in which alumina content is 70% to 89% by mass relative to the complex oxide particles and yttria content is 0.01% to 0.22% by mole relative to the ceria-zirconia complex oxide. | 10-22-2015 |