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公开(公告)号：EP4190446A1
公开(公告)日：2023-06-07
申请号：EP21853523.5
申请日：2021-07-19
申请人： CATALER CORPORATION
发明人： MIURA, Taku , GOTO, Takashi , OISHI, Shunsuke
摘要： The present disclosure provides an exhaust gas purifying catalyst that may exhibit high purification performance both in a low temperature state immediately after an engine is started and during a high-load operation. The exhaust gas purifying catalyst disclosed herein contains at least one type of noble metal purifying exhaust gas, and includes a substrate, and a catalyst coat layer formed on a surface of the substrate. The catalyst coat layer is formed to have a stack structure including a lower layer provided on the substrate and an upper layer provided on the lower layer. The lower layer contains a noble metal and an oxide having an oxygen storage capacity. A noble metal-containing surface layer portion containing a noble metal is formed in at least a part of a surface portion of the upper layer. The upper layer does not contain an oxide having the oxygen storage capacity.
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公开(公告)号：EP4129474A1
公开(公告)日：2023-02-08
申请号：EP21781160.3
申请日：2021-03-17
申请人： CATALER CORPORATION
摘要： An exhaust gas purification catalyst device comprising a base material and a catalyst coating layer provided on the base material, wherein the catalyst coating layer contains zeolite particles, inorganic oxide particles other than the zeolite particles, and a catalyst precious metal, and the ratio d ZEO /d OX between the average particle diameter D ZEO of the zeolite particles and the average particle diameter dox of the inorganic oxide particles other than the zeolite particles is 3.4 or less.
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公开(公告)号：EP4008428A1
公开(公告)日：2022-06-08
申请号：EP20861642.5
申请日：2020-07-30
申请人： CATALER CORPORATION
发明人： OTA, Takaya , OISHI, Shunsuke , TAKASU, Ryosuke
摘要： The present invention provides an exhaust gas purification catalyst including a base material 11 and a catalyst layer 20 provided on the base material 11. The catalyst layer 20 includes: a catalyst metal; and a carrying material 21 carrying the catalyst metal. The carrying material 21 includes: an OSC material 22 having an oxygen storage capacity; and a carrier 23 other than the OSC material. The OSC material 22 has a mean particle diameter Dx of 1.5 µm or more which is larger than the mean particle diameter Dy of the carrier 23 other than the OSC material 22.
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公开(公告)号：EP3581269A1
公开(公告)日：2019-12-18
申请号：EP18783833.9
申请日：2018-04-09
申请人： Cataler Corporation
摘要： The present invention provides an exhaust gas purification catalyst including an alkaline earth metal supported in a highly dispersed state on a porous carrier. A catalyst layer of the exhaust gas purification catalyst provided by the invention has an alkaline earth metal-supporting region including a porous carrier, a catalyst metal belonging to the platinum group, and a sulfate of at least one type of alkali earth metal supported on the porous carrier. In a cross-section of this region, a Pearson correlation coefficient R Ae/M is at least 0.5 as calculated using α and β for each pixel obtained by carrying out area analysis by FE-EPMA under conditions of pixel size of 0.34 µm × 0.34 µm, and measured pixel number 256 × 256, and by measuring the characteristic X-ray intensity (α: cps) of the alkaline earth metal element (Ae) and the characteristic X-ray intensity (β: cps) of the main constituent element of the inorganic compound constituting the porous carrier for each pixel.
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公开(公告)号：EP4349479A1
公开(公告)日：2024-04-10
申请号：EP22811121.7
申请日：2022-04-27
申请人： CATALER CORPORATION
摘要： An exhaust gas purification catalyst 100 comprises: a complex oxide carrier 110 including an OSC material 111 and a first alkaline earth metal oxide 112; and a second alkaline earth metal oxide 120 supported on the complex oxide carrier 110.
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公开(公告)号：EP4209270A1
公开(公告)日：2023-07-12
申请号：EP21864173.6
申请日：2021-08-23
申请人： CATALER CORPORATION
发明人： OISHI, Shunsuke , INADA, Naruya , OGAWA, Ryoichi
摘要： This exhaust gas purification catalyst device has a catalyst coated layer 120 formed on at least one base material 110, wherein: the catalyst coated layer 120 includes a first catalyst coated layer 121 on the upstream side of an exhaust gas flow, and a second catalyst coated layer 122 on the downstream side of the exhaust gas flow; the first catalyst coated layer 121 includes a hydrocarbon adsorbent and a catalytic precious metal; and the second catalyst coated layer 122 includes a nitrogen oxide adsorbent and a catalytic precious metal.
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公开(公告)号：EP4183474A1
公开(公告)日：2023-05-24
申请号：EP21846370.1
申请日：2021-07-06
申请人： CATALER CORPORATION
发明人： TAKASAKI, Kohei , OHASHI, Tatsuya , OISHI, Shunsuke , ONOE, Ryota , HORI, Junichi , TAKASU, Ryosuke , KASUYA, Chihiro
摘要： Provided is an exhaust gas purification catalyst system comprising, in the following order, from the upstream side of an exhaust gas flow: a first exhaust gas purification catalyst apparatus 100 including a metal honeycomb substrate 110 and a first catalyst coat layer 120 on the metal honeycomb substrate 110; a heater 300; and a second exhaust purification catalyst apparatus 200 including a cordierite honeycomb substrate 210 and a second catalyst coat layer 220 on the cordierite honeycomb substrate 210, wherein the first catalyst coat layer 120 contains an adsorbent 130 that can adsorb one or two or more among NOx, HC and CO, and the second catalyst coat layer 220 contains inorganic oxide particles 230 and catalyst precious metal particles 240 supported on the inorganic oxide particles 230.
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8.发明公开
公开(公告)号：EP4268954A1
公开(公告)日：2023-11-01
申请号：EP22752632.4
申请日：2022-02-01
申请人： CATALER CORPORATION
摘要： The present invention provides an ohmic heating-type exhaust gas purification catalyst system. The ohmic heating-type exhaust gas purification catalyst system is configured to perform, based on information of temperature of a catalyst bed input from a temperature detector of an ohmic heating-type exhaust gas purification device, electric current pass control including controls of (1) causing an electric current to pass through a pair of electrodes when the temperature of the catalyst bed is equal to or lower than a first threshold temperature T1 set in a range of 350 ± 25 °C, (2) not causing an electric current to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the first threshold temperature T1 and is equal to or lower than a second threshold temperature T2 set in a range of 450 ± 25 °C, (3) causing an electric current caused to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the second threshold temperature T2 and is equal to or lower than a third threshold temperature T3 set to be equal to or higher than 550 °C, and (4) not causing an electric current to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the third threshold temperature T3.
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公开(公告)号：EP4147778A1
公开(公告)日：2023-03-15
申请号：EP21833616.2
申请日：2021-06-28
申请人： CATALER CORPORATION
发明人： TAKASU, Ryosuke , OISHI, Shunsuke , OTA, Takaya
摘要： An exhaust gas purification catalyst showing resistance to peeling and high purification performance is provided. The present invention is an exhaust gas purification catalyst including a base material and a catalyst layer disposed on the base material. The catalyst layer includes a catalytic metal, a first metal oxide, and a second metal oxide having a higher heat resistance than that of the first metal oxide. When Dx is an area-based average particle diameter of the first metal oxide determined from an arbitrary cross section of the catalyst layer and Dy is an area-based particle diameter of the second metal oxide 22 measured from the cross section of the catalyst layer, a ratio of the Dy to the Dx (Dy/Dx) is 5 or more, and the Dy is 7 µm or more. In the catalyst layer, pore volume of pores having pore diameters 30 nm or more measured by a nitrogen adsorption method is 0.28 cm 3 /g or more.
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公开(公告)号：EP4098360A1
公开(公告)日：2022-12-07
申请号：EP20919590.8
申请日：2020-12-07
申请人： CATALER CORPORATION
发明人： OISHI, Shunsuke , OTA, Takaya , MIURA, Taku , TOGASHI, Hiromi , TAKASU, Ryosuke
摘要： In accordance with the technology herein disclosed, an exhaust gas purification catalyst exhibiting a high exhaust gas purifying performance using a new rare earth-containing material is provided. The exhaust gas purification catalyst herein disclosed includes a base material and a catalyst layer formed on the surface of the base material. The catalyst layer of such an exhaust gas purification catalyst includes rare earth-carrying alumina 50 including a primary particle of a rare earth particle 40 including at least one rare earth element carried on the surface of an alumina carrier 30 including alumina, and the average particle diameter Dso based on TEM observation of the rare earth particle 40 in the rare earth-carrying alumina 50 is 10 nm or less. As a result of this, it is possible to provide an exhaust gas purification catalyst having high NOx adsorption performance and CO adsorption performance.
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