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公开(公告)号：EP3991844A1
公开(公告)日：2022-05-04
申请号：EP20831269.4
申请日：2020-06-17
发明人： IWATA, Kana , ITOU, Minoru , YOSHIDA, Takeru , KAKINOHANA, Masaru , SUZUKI, Hiromasa , TANAKA, Atsushi
摘要： An exhaust gas purification catalyst apparatus 100 has a honeycomb base material and a catalyst noble metal supported by the honeycomb base material, wherein: the honeycomb base material contains ceria-zirconia composite oxide particles as one of the constituent materials, is of a wall flow type, and includes inlet-side cells 21 and outlet-side cells 22 demarcated by porous partition walls 10; the catalyst noble metal is supported in inlet-side support regions 30 and outlet-side support regions 40; each of the inlet-side support regions 30 is formed with a specific length 31 from the exhaust gas flow upstream end; the catalyst noble metal 70% support depth is not greater than 50% of the thickness of the porous partition walls 10; each of the outlet-side support regions 40 is formed with a specific length 41 from the exhaust gas flow downstream end; and the catalyst noble metal 70% support depth is greater than 50% of the thickness of the porous partition walls 10.
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公开(公告)号：EP2431094A1
公开(公告)日：2012-03-21
申请号：EP10769747.6
申请日：2010-04-27
发明人： ITOU, Minoru , TAKEUCHI, Michihiko , SHINOZAKI, Tetsuya , KANAZAWA, Takaaki , KAMADA, Masaya , SUZUKI, Tadashi , KATOH, Satoru , TAKAHASHI, Naoki
CPC分类号： F01N3/2828 , B01D53/9413 , B01D53/9472 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/20715 , B01D2255/2092 , B01D2255/407 , B01D2255/902 , B01D2255/908 , B01J23/63 , B01J35/0006 , B01J35/04 , B01J37/0244 , F01N2550/02 , Y10S502/52712 , Y10S502/52713 , Y10S502/52719
摘要： Provided is an exhaust gas-purifying catalyst exhibiting a sufficient performance in purifying exhaust gas with a suppressed hydrogen sulfide emission without using a large amount of nickel. An exhaust gas-purifying catalyst 1 includes a support 10 provided with one or more through-holes through which exhaust gas flows, and a catalytic layer 20 supported by the support 10 and containing an oxygen storage material, wherein the exhaust gas-purifying catalyst 1 includes a first section 100 to which the exhaust gas is supplied, and a second section 200 to which the exhaust gas having passed through the first section 100 is supplied, the catalytic layer 20 includes a layered structure of a first catalytic layer 20A containing platinum and/or palladium and a second catalytic layer 20B containing rhodium in the first catalytic section 100 and further includes a third layer 20C containing rhodium in the second section 200, and the second section 200 is smaller in oxygen storage material content per unit volumetric capacity than the first section 100.
摘要翻译： 本发明提供一种废气净化用催化剂，即使不使用大量的镍，也能够抑制硫化氢的排出，从而具有充分的废气净化性能。 废气净化用催化剂1具备：设置有供废气流动的一个以上的贯通孔的支承体10;以及由支承体10支承并含有储氧材料的催化剂层20，其中，废气净化用催化剂1 包括供应废气的第一部分100和供应已经通过第一部分100的废气的第二部分200，催化剂层20包括含有铂的第一催化剂层20A和 /或钯和在第一催化部分100中含有铑的第二催化剂层20B，并且还包括在第二部分200中含有铑的第三层20C，并且第二部分200的每单位体积容量中的氧存储材料含量小于 第一部分100。
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公开(公告)号：EP3970855A1
公开(公告)日：2022-03-23
申请号：EP20805155.7
申请日：2020-05-11
发明人： IWATA, Kana , ITOU, Minoru , OHISHI, Shunsuke , YOSHIDA, Takeru , SUZUKI, Hiromasa , KAKINOHANA, Masaru , KAMITANI, Satoshi
摘要： An exhaust gas purification catalyst device having a substrate and one or more catalytic noble metals supported on the substrate. The substrate has a plurality of cells partitioned by a porous wall 1 and includes ceria-zirconia compound oxide particles. A specific noble metal that is one of the one or more catalytic noble metals satisfies both the following requirements (1) and (2): (1) the noble metal 50% support depth for the specific noble metal is 30% or less of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1, and (2) the noble metal 90% support depth for the specific noble metal is 35% or more of the distance from the surface of the porous wall 1 to the center of the interior of the porous wall 1.
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公开(公告)号：EP3970854A1
公开(公告)日：2022-03-23
申请号：EP20805060.9
申请日：2020-05-11
发明人： IWATA, Kana , ITOU, Minoru , OHISHI, Shunsuke , YOSHIDA, Takeru , KAKINOHANA, Masaru , KAMITANI, Satoshi , SUZUKI, Hiromasa
摘要： This exhaust gas purification catalytic device 100 includes: a substrate 10; at least one type of noble-metal catalyst PGM that is supported on the substrate 10; and a coating layer 15 on the surface of the substrate 10. The substrate 10 includes a plurality of cells 12 which are demarcated by porous walls 11. The substrate 10 and the coating layer 15 each include ceria-zirconia composite oxide particles CZ.
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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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