公开(公告)号：US20160279607A1

公开(公告)日：2016-09-29

申请号：US15037345

申请日：2014-12-04

Applicant: CATALER CORPORATION

Inventor： Satoshi MATSUEDA ,  Akimasa HIRAI ,  Kenichi TAKI

IPC: B01J23/10 ,  B01D53/94 ,  B01J23/44 ,  B01J23/46 ,  B01J23/42

CPC classification number: B01J23/10 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2045 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/031 ,  B01J2523/00 ,  F01N3/2828 ,  Y02T10/22 ,  B01J2523/3712 ,  B01J2523/3725 ,  B01J2523/48 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/23

Abstract: The exhaust gas-purifying catalyst of the invention contains oxide particles having interdispersed therein A crystallites that are loaded with a noble metal and B crystallites that are not loaded with a noble metal. The A crystallites loaded with a noble metal are composed of an oxide containing at least one of zirconium (Zr) and cerium (Ce). The B crystallites not loaded with a noble metal are composed of a cerium (Ce)-containing oxide which has a higher Ce content (mol %) than the oxide making up the A crystallites. The oxide particles have a specific surface area after 5 hours of heat treatment at 1,150° C. in open air of 30 m2/g or more.

Abstract translation: 本发明的废气净化用催化剂含有分散有氧化物粒子的载体为贵金属的微晶和未装载贵金属的B微晶。 负载有贵金属的A微晶由含有锆（Zr）和铈（Ce）中的至少一种的氧化物构成。 未装载贵金属的B微晶由含有铈（Ce）的氧化物构成，Ce的含量（mol％）高于构成A微晶的氧化物。 氧化物粒子在空气中为1150℃，热处理5小时后的比表面积为30m 2 / g以上。

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

IPC: B01J23/63 ,  B01J35/00 ,  B01J23/00

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。

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

IPC: B01D53/94 ,  B01J23/46 ,  B01J23/63 ,  F01N3/10 ,  B01J23/44

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.

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

IPC: B01J23/46 ,  B01J23/58 ,  B01J35/04 ,  B01J23/63

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％。

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。

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

IPC: B01J23/63 ,  B01J23/00 ,  B01J35/00

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。