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公开(公告)号：US20190015820A1
公开(公告)日：2019-01-17
申请号：US16071444
申请日：2017-01-19
Applicant: CATALER CORPORATION
Inventor： Chihiro KASUYA , Kenichi TAKI , Satoshi MATSUEDA , Sho HOSHINO
Abstract: An exhaust gas purification device which has improved exhaust gas purification performance. An exhaust gas purification device which includes a first catalyst layer that contains: a Pd-supporting catalyst which is obtained by having alumina carrier particles support Pd; a first Rh-supporting catalyst which is obtained by having first ceria-zirconia carrier particles support Rh; and second ceria-zirconia carrier particles. This exhaust gas purification device is configured such that: the ceria concentration in the first ceria-zirconia carrier particles is 30 wt % or less; and the amount of ceria in the second ceria-zirconia carrier particles is larger than the amount of ceria in the first ceria-zirconia carrier particles.
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公开(公告)号：US20160199816A1
公开(公告)日：2016-07-14
申请号：US14914829
申请日：2014-12-09
Applicant: CATALER CORPORATION
Inventor： Satoshi MATSUEDA , Akimasa HIRAI , Kenichi TAKI , Sho HOSHINO
CPC classification number: B01J35/006 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/9022 , B01D2255/9025 , B01D2255/9032 , B01D2255/908 , B01J23/002 , B01J23/63 , B01J35/0006 , B01J35/0013 , B01J2523/00 , F01N3/101 , F01N2510/0682 , F01N2510/0684 , Y02T10/22 , B01J2523/3706 , B01J2523/3712 , B01J2523/3725
Abstract: Provided is an exhaust cleaning catalyst that exhibits higher NOX-reducing activities at the time of engine restart while maintaining its catalytic activities during normal traveling. This invention provides an exhaust cleaning catalyst including a substrate and a catalyst coating layer including CeO2. Catalyst coating layer is constituted in its thickness direction with multiple coating layers. In a top coating layer located at the outermost surface, the CeO2 content in a top coating layer's upstream portion is less than the CeO2 content in a top coating layer's downstream portion. In a bottom coating layer near substrate, the CeO2 content in a bottom layer's downstream portion is less than the CeO2 content in a bottom coating layer's upstream portion.
Abstract translation: 本发明提供一种排气净化催化剂，其在发动机重起时表现出较高的NO x还原活性，同时在正常行驶过程中保持其催化活性。 本发明提供一种排气净化催化剂，其包括基体和包含CeO 2的催化剂涂层。 催化剂涂层在其厚度方向上由多个涂层构成。 在位于最外表面的顶部涂层中，顶部涂层的上游部分中的CeO 2含量小于顶部涂层的下游部分中的CeO 2含量。 在底层附近的底涂层中，底层下游部分中的CeO 2含量小于底涂层上游部分中的CeO 2含量。
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公开(公告)号：US20190060876A1
公开(公告)日：2019-02-28
申请号：US16079338
申请日：2017-02-23
Applicant: CATALER CORPORATION
Inventor： Takara MISUMI , Satoshi MATSUEDA
Abstract: An exhaust-gas purifying catalyst includes a lower layer containing ceria-based oxide particles and an upper layer containing metal oxide particles and a precious metal supported on the metal oxide particles, wherein the exhaust-gas purifying catalyst is characterized in that the Rh content of the lower layer is equal to or less than 0.25 g/L, and also that the particle-size distribution of the ceria-based oxide particles in the lower layer, which is obtained by scanning electron microscopy, has a first peak in which the peak top thereof is in a region of 0.90-6.50 μm and a second peak in which the peak top thereof is in a region of 9.50-34.0 μm.
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公开(公告)号：US20160288052A1
公开(公告)日：2016-10-06
申请号：US15037070
申请日：2014-12-04
Applicant: CATALER CORPORATION
Inventor： Satoshi MATSUEDA , Akimasa HIRAI , Kenichi TAKI
IPC: B01D53/94 , B01J23/652 , B01J23/648 , B01J35/00 , B01J23/10
CPC classification number: B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/207 , B01D2255/20715 , B01D2255/20769 , B01D2255/20776 , B01D2255/2092 , B01D2255/407 , B01J23/002 , B01J23/10 , B01J23/6484 , B01J23/6486 , B01J23/6525 , B01J23/6527 , B01J35/002 , B01J35/0046 , B01J37/03 , B01J37/12 , B01J2523/00 , Y02T10/22 , B01J2523/36 , B01J2523/3706 , B01J2523/3712 , B01J2523/48 , B01J2523/69 , B01J2523/828 , B01J2523/68 , B01J2523/56 , B01J2523/3725 , B01J2523/822 , B01J2523/57 , B01J2523/824
Abstract: The exhaust gas-purifying catalyst of the invention includes a noble metal, and crystallites that form CZ composite metal particles which serve as a carrier supporting the noble metal and contain at least zirconium (Zr) and cerium (Ce). The CZ composite oxide particles (crystallites) further contain crystal growth-suppressing fine particles which are fine metal particles comprising primarily a metallic element M that melts at 1,500° C. or above and which suppress crystal growth by the CZ composite oxide particles. The content of the metallic element M included in the CZ composite oxide particles, expressed in terms of the oxide thereof, is 0.5 mol % or less of the total oxide.
Abstract translation: 本发明的废气净化用催化剂含有贵金属和形成CZ复合金属粒子的微晶，其作为负载贵金属的载体，至少含有锆（Zr）和铈（Ce）。 CZ复合氧化物粒子（微晶）还含有作为主要由1500℃以上熔融的金属元素M构成的微细金属粒子的晶体生长抑制微粒，并抑制CZ复合氧化物粒子的晶体生长。 包含在CZ复合氧化物颗粒中的金属元素M的含量以氧化物计，为总氧化物的0.5mol％以下。
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公开(公告)号：US20160199815A1
公开(公告)日：2016-07-14
申请号：US14914299
申请日：2014-12-09
Applicant: CATALER CORPORATION
Inventor： Sho HOSHINO , Akimasa HIRAI , Kenichi TAKI , Satoshi MATSUEDA
CPC classification number: B01J23/63 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/407 , B01D2255/902 , B01D2255/9032 , B01D2255/908 , B01D2258/014 , B01J23/002 , B01J35/0006 , B01J35/0013 , B01J35/006 , B01J2523/00 , F01N3/101 , F01N2510/0682 , F01N2510/0684 , Y02T10/22 , B01J2523/3706 , B01J2523/3712 , B01J2523/3725
Abstract: Provided is an exhaust catalyst that exhibits higher NOX-reducing activities at the time of engine restart while maintaining its catalytic activities during normal traveling. This invention provides an exhaust cleaning catalyst comprising a substrate and a catalyst coating layer that includes CeO2. Catalyst coating layer is constituted in its thickness direction with multiple coating layers. In a top coating layer located at the outermost surface, the CeO2 content in a top coating layer's upstream portion is less than the CeO2 content in a top coating layer's downstream portion; and the CeO2 content in the top coating layer's upstream portion is less than the CeO2 content in a lower coating layer. The CeO2 content per liter of catalyst volume in the entire coating layer is 10 g/L to 30 g/L.
Abstract translation: 提供了在发动机重起时表现出更高的NO x还原活性的排气催化剂，同时在正常行驶期间保持其催化活性。 本发明提供一种排气净化催化剂，其包括基体和包括CeO 2的催化剂涂层。 催化剂涂层在其厚度方向上由多个涂层构成。 在位于最外表面的顶部涂层中，顶部涂层的上游部分中的CeO 2含量小于顶部涂层的下游部分中的CeO 2含量; 并且顶涂层的上游部分中的CeO 2含量小于下涂层中的CeO 2含量。 整个涂层中每升催化剂体积的CeO 2含量为10g / L至30g / L。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180311616A1
公开(公告)日：2018-11-01
申请号：US15771902
申请日：2016-10-24
Applicant: CATALER CORPORATION
Inventor： Yu SAKURADA , Satoshi MATSUEDA , Sho HOSHINO , Ryota NAKASHIMA
CPC classification number: B01D53/94 , B01D2255/206 , B01D2255/20715 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J23/10 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/63 , B01J35/0006 , B01J37/04
Abstract: A novel exhaust gas purifying catalyst, method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. An exhaust gas purifying catalyst having a first carrier particle, a second carrier particle, and a precious metal catalyst particle carried on the first and second carrier particles, wherein: the first carrier particle contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle is higher than the contained amount of the rare-earth oxide in the first carrier particle.
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公开(公告)号：US20180280878A1
公开(公告)日：2018-10-04
申请号：US15763373
申请日：2016-09-23
Applicant: CATALER CORPORATION
Inventor： Satoru INODA , Satoshi MATSUEDA , Kenichi TAKI , Akimasa HIRAI
Abstract: A catalyst for exhaust gas purification, which is capable of effectively purifying an exhaust gas. A catalyst for exhaust gas purification, which includes first catalyst particles, second catalyst particles and carrier particles that support the first catalyst particles and the second catalyst particles. The first catalyst particles are Pd particles or Pd—Rh alloy particles; and the second catalyst particles are Pd—Rh alloy particles. The molar ratio of Rh to the total of Pd and Rh in the first catalyst particles is 0.50 times or less the molar ratio of Rh to the total of Pd and Rh in the second catalyst particles.
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公开(公告)号：US20160236181A1
公开(公告)日：2016-08-18
申请号：US15030448
申请日：2014-12-08
Applicant: CATALER CORPORATION
Inventor： Satoru INODA , Akimasa HIRAI , Kenichi TAKI , Satoshi MATSUEDA
CPC classification number: B01J23/464 , B01D53/945 , B01D2255/1023 , B01D2255/1025 , B01D2255/9202 , B01J21/066 , B01J23/44 , B01J23/58 , B01J23/63 , B01J35/0013 , B01J35/002 , B01J35/04 , B01J37/0215 , B01J37/0219 , B01J37/343 , Y02T10/22
Abstract: An exhaust cleaning catalyst, with which precious metal sintering is inhibited and which has greater exhaust cleaning abilities, has a substrate and a catalyst coating layer provided on the substrate. The catalyst coating layer has a precious metal that serves as an oxidation and/or reduction catalyst. The precious metal has Rh-containing metal particles in which rhodium (Rh) coexists with a base metal selected among platinum group elements excluding rhodium. The Rh-containing metal particles have an average rhodium content of 0.1% to 5% by mole with the total amount of the base metal and rhodium being 100% by mole.
Abstract translation: 贵金属烧结被抑制并且具有更大的排气清洁能力的排气净化催化剂具有设置在基板上的基板和催化剂涂层。 催化剂涂层具有用作氧化和/或还原催化剂的贵金属。 贵金属具有含Rh的金属颗粒，其中铑（Rh）与选自除铑之外的铂族元素中的贱金属共存。 含Rh金属颗粒的平均铑含量为0.1〜5摩尔％，贱金属和铑的总量为100摩尔％。
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公开(公告)号：US20160038921A1
公开(公告)日：2016-02-11
申请号：US14885716
申请日：2015-10-16
Applicant: DAIHATSU MOTOR CO., LTD. , CATALER CORPORATION
Inventor： Hirohisa TANAKA , Mari UENISHI , Masashi TANIGUCHI , Ryouhei IWASAKI , Mareo KIMURA , Satoshi MATSUEDA
CPC classification number: B01J23/8946 , B01D53/945 , B01D2255/1023 , B01D2255/2047 , B01D2255/20738 , B01D2255/2092 , B01J23/002 , B01J23/005 , B01J23/78 , B01J37/03 , B01J37/036 , B01J37/08 , B01J37/16 , B01J2523/00 , Y02T10/22
Abstract: A method for producing an exhaust gas purifying catalyst including a composite oxide represented by the following general formula (3), the method including a primary baking step of baking a coprecipitate obtained from an aqueous mixed salt solution of respective elements, a citrate complex obtained from an aqueous citric acid mixed salt solution of salts of the respective elements and citric acid, or a precipitate obtained from an alkoxide mixed solution of the respective elements at 500 to 1200° C., the respective elements constituting the exhaust gas purifying catalyst represented by the following general formula (3), including A, B and Fe but excluding Pd; a step of adding an aqueous solution of Pd salt to a primary composite oxide obtained through the primary baking step to give a precursor composition; and a secondary baking step of baking the precursor composition at 800 to 1400° C., AO.x(B2-y-ZFeyPdZO3-α) (3).
Abstract translation: 一种生产包含由以下通式（3）表示的复合氧化物的废气净化催化剂的方法，所述方法包括：焙烧由各元素的混合盐水溶液获得的共沉淀物的初级烘烤步骤，由 各种元素的盐和柠檬酸的柠檬酸盐水溶液的混合盐水溶液，或由各元素的醇盐混合溶液在500〜1200℃下得到的沉淀物，构成废气净化催化剂的各元素 按照通式（3），包括A，B和Fe，但不包括Pd; 将通过一次烘焙工序得到的一次复合氧化物的Pd盐水溶液添加到前体组合物中的工序; 以及在800〜1400℃下AOx（B2-y-ZFeyPdZO3-α）（3）烧成前体组合物的二次烧成工序。
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公开(公告)号：US20150265968A1
公开(公告)日：2015-09-24
申请号：US14733306
申请日：2015-06-08
Applicant: CATALER CORPORATION
Inventor： Hirohisa TANAKA , Isao TAN , Mari UENISHI , Masashi TANIGUCHI , Mareo KIMURA , Satoshi MATSUEDA
CPC classification number: B01D53/945 , B01D53/94 , B01D2255/1025 , B01D2255/204 , B01D2255/2047 , B01D2255/20738 , B01D2255/2092 , B01J23/002 , B01J23/58 , B01J23/8946 , B01J37/0201 , B01J37/031 , B01J2523/00 , Y02A50/2324 , Y02T10/22 , B01J2523/31 , B01J2523/3718 , B01J2523/822 , B01J2523/24 , B01J2523/842 , B01J2523/22 , B01J2523/47
Abstract: Provided is a catalyst composition capable of preventing decrease in catalytic activity due to grain growth of noble metal under high temperature or under change in oxidation reduction or further for long term use, and of achieving excellent catalytic activity over a long time.The catalyst composition containing a composite oxide represented by the following general formula (1): AO.x(B2-yCyO3-α) (1) (wherein A represents an element selected from monovalent elements, divalent elements and lanthanides; B represents a trivalent element; and C represents a noble metal; x represents an integer of 1 to 6; y represents an atomic ratio satisfying the following relation; 0
Abstract translation: 提供一种催化剂组合物，其能够防止贵金属在高温下或氧化还原或长期使用的变化下由于贵金属的晶粒生长而导致的催化活性降低，并且能够长期获得优异的催化活性。 含有由以下通式（1）表示的复合氧化物的催化剂组合物：AO.x（B2-yCyO3-α）（1）（其中A表示选自一价元素，二价元素和镧系元素的元素; B表示三价 元素; C表示贵金属; x表示1至6的整数; y表示满足以下关系的原子比; 0
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