Patent application number | Description | Published |
20090036300 | EXHAUST GAS-PURIFYING CATALYST - An exhaust gas-purifying catalyst ( | 02-05-2009 |
20090131251 | EXHAUST GAS-PURIFYING CATALYST - An exhaust gas-purifying catalyst is less prone to cause a decrease in its activity even when used in a high temperature atmosphere containing oxygen at a high concentration. The exhaust gas-purifying catalyst includes a composite oxide and Pd or a second solid solution of a composite and Rh and/or Pt. The first and second solid solutions have perovskite structure and are represented by ABO | 05-21-2009 |
20100004122 | Exhaust Gas-Purifying Catalyst | 01-07-2010 |
20100004123 | OXYGEN STORAGE MATERIAL - An excellent oxygen storage capacity is achieved even in the case used for a long period of time under high temperature conditions. An oxygen storage material contains a first particle made of a composite oxide of cerium and zirconium or a composite oxide of cerium, a rare-earth element other than cerium and zirconium, a second particle including a composite oxide of a rare-earth element, an alkaline-earth element and zirconium, and a precious metal. A part of the precious metal forms a solid solution with the composite oxide included in the second particle. | 01-07-2010 |
20100204039 | Exhaust Gas-Purifying Catalyst - The exhaust gas-purifying catalyst includes at least one of a first composite oxide represented by a formula A(Al | 08-12-2010 |
20110207601 | EXHAUST GAS-PURIFYING CATALYST - An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB | 08-25-2011 |
20110245076 | EXHAUST GAS PURIFICATION CATALYST - An exhaust gas purification catalyst includes a substrate, and a first catalyst layer formed on the substrate, the first catalyst layer containing palladium and/or platinum and alumina doped with an alkaline-earth metal element. The exhaust gas purification catalyst has a correlation coefficient ρ | 10-06-2011 |
20120122667 | EXHAUST GAS-PURIFYING CATALYST - An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more acidic oxides interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of constituent elements of the acidic oxide(s) other than oxygen and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.70 or more. | 05-17-2012 |
20120122672 | EXHAUST GAS-PURIFYING CATALYST - An exhaust gas-purifying catalyst includes first particles of oxygen storage material, second particles of one or more rare-earth elements other than cerium and/or compounds thereof interposed between the first particles, and third particles of one or more precious metal elements interposed between the first particles, wherein a spectrum of a characteristic X-ray intensity for one of the rare-earth element(s) and a spectrum of a characteristic X-ray intensity for one of the precious metal element(s) that are obtained by performing a line analysis using energy-dispersive X-ray spectrometry along a length of 500 nm have a correlation coefficient of 0.68 or more. | 05-17-2012 |
20140038812 | EXHAUST GAS-PURIFYING CATALYST | 02-06-2014 |