Patent application number | Description | Published |
20080207438 | Catalytic material and catalyst for purifying exhaust gas component - Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of Nd | 08-28-2008 |
20080269046 | EXHAUST GAS PURIFICATION CATALYST AND MANUFACTURING METHOD THEREOF - In an exhaust gas purification catalyst that contains an oxygen storage component containing Ce and Zr, alumina and a catalytic metal, a plurality of primary particles of the oxygen storage component and a plurality of primary particles of the alumina agglomerate to form each of mixed oxide particles and the catalytic metal includes Pd doped in the oxygen storage component particles to constitute each of the oxygen storage component particles with Ce and Zr and exposed at the surfaces of the oxygen storage component particles and Pd adhered to the surfaces of the oxygen storage component particles and the surfaces of the alumina particles. | 10-30-2008 |
20090041637 | CATALYST-SUPPORTED PARTICULATE FILTER - In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency. | 02-12-2009 |
20090099012 | CATALYST-SUPPORTED PARTICULATE - A catalyst layer formed on the walls of exhaust gas channels in a particulate filter contains a catalyst material in the form of secondary particles, each secondary particle being formed so that at least two kinds of primary particles selected from the group consisting of primary particles of activated alumina, primary particles of a Zr-based mixed oxide and primary particles of a Ce-based mixed oxide are mixed and cohere together. Each of the primary particles of the Zr-based mixed oxide contains Zr and a rare earth metal Z other than Ce and each of the primary particles of the Ce-based mixed oxide contains Ce, Zr and a rare earth metal R other than Ce. | 04-16-2009 |
20090107124 | CATALYST-SUPPORTED PARTICULATE FILTER - A catalyst layer formed on the walls of exhaust gas channels in a particulate filter contains a catalyst material containing at least two kinds of primary particles selected from the group consisting of primary particles of activated alumina, primary particles of a ZrNd-based mixed oxide and primary particles of a CeZr-based mixed oxide. The catalyst material is formed so that primary particles of one of the ZrNd-based mixed oxide and the CeZr-based mixed oxide are dispersedly carried on the surface of each of secondary particles. Each secondary particle is formed by cohesion of at least one kind of primary particles selected from the group consisting of primary particles of activated alumina and primary particles of the other of the ZrNd-based mixed oxide and the CeZr-based mixed oxide. | 04-30-2009 |
20090241495 | PARTICULATE FILTER - Disclosed is a particulate filter | 10-01-2009 |
20110045968 | EXHAUST GAS PURIFICATION CATALYST - A catalyst layer includes: a first mixed oxide particle component | 02-24-2011 |
20110107751 | EXHAUST GAS PURIFICATION CATALYST - In an exhaust gas purification catalyst in which Rh-doped CeZr-based mixed oxide powder and precious-metal (at least one of Pt and Pd)-supporting heat-resistant powder are included in a catalyst layer 2 provided on a support 1, Rh-doped CeZr-based mixed oxide particles either contain at least one of Pr, La, and Y, or are complexed with Al | 05-12-2011 |
20140205508 | CATALYZED PARTICULATE FILTER - A filter is configured for efficient combustion of particulates accumulated on a catalyst layer | 07-24-2014 |
20140235433 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCING THE SAME - An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes Rh-supporting Zr-based composite oxide in which Rh6 is supported on Zr-based composite oxide containing Zr and a rare earth metal except Ce. The Rh-supporting Zr-based composite oxide has been previously subjected to a reduction treatment. | 08-21-2014 |
20140235434 | EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCING THE SAME - An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes a binder material of Rh-doped CeZr-based composite oxide containing Ce and Zr and doped with Rh. The binder material has been previously subjected to a reduction treatment. | 08-21-2014 |
20140364305 | EXHAUST GAS COMPONENT PURIFICATION CATALYTIC MATERIAL AND CATALYZED PARTICULATE FILTER WITH THE CATALYTIC MATERIAL - An exhaust gas component purification catalytic material | 12-11-2014 |
20150087503 | EXHAUST GAS PURIFICATION CATALYST - An exhaust gas purification catalytic material for purifying exhaust gas from an engine includes ZrLaY composite oxide containing ZrO | 03-26-2015 |