公开(公告)号：US20190193057A1

公开(公告)日：2019-06-27

申请号：US16329630

申请日：2017-09-19

Applicant: CATALER CORPORATION

Inventor： Sho HOSHINO ,  Yuki TAKESUE ,  Ryota ONOE ,  Taku MIURA ,  Takaya OTA

IPC: B01J23/63 ,  F01N3/28 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01D53/94

Abstract: An exhaust gas purifying catalyst includes a catalyst layer formed inside a partition wall of a base material having a wall flow structure, and has an upstream-side and a downstream-side catalyst layer. The upstream-side catalyst layer includes Rh and a Ce-containing oxide, and the downstream-side catalyst layer includes Pd and a Ce-containing oxide. The mass of the catalyst layer per unit volume of the base material is from 105 g/L to 210 g/L, the mass of the upstream-side catalyst layer per unit volume in an upstream-side portion is from 50 g/L to 100 g/L, the mass of the downstream-side catalyst layer per unit volume in a downstream-side portion is from 100 g/L to 150 g/L, the Ce amount per unit volume of the base material is from 14 g/L to 35 g/L, and the Ce amount per unit volume in the upstream-side portion is from 5 g/L to 20 g/L.

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。

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

IPC: B01J23/63 ,  B01D53/94 ,  B01J27/053 ,  B01J37/08 ,  B01J35/00 ,  F01N3/10 ,  F01N3/28

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.

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：US20200011221A1

公开(公告)日：2020-01-09

申请号：US16490985

申请日：2018-03-16

Applicant: CATALER CORPORATION

Inventor： Haruka MAKINO ,  Yasutaka NOMURA ,  Satoru INODA ,  Sho HOSHINO ,  Ryota ONOE

IPC: F01N3/035 ,  F01N3/022 ,  F01N3/28

Abstract: An exhaust gas cleaning catalyst that has: a substrate having a wall flow structure, wherein an entry side cell, in which the end part on an exhaust gas inflow side is open, and an exit side cell, in which the end part on the exhaust gas outflow side is open, are divided by a porous dividing wall; and a first catalyst layer that includes a metal catalyst and is disposed within the dividing wall so as to be in contact with the exit side cell and not in contact with the entry side cell, and no catalyst layer is provided in the region in contact with the entry side cell.

公开(公告)号：US20190151829A1

公开(公告)日：2019-05-23

申请号：US16082039

申请日：2017-02-28

Applicant: Cataler Corporation

Inventor： Sho HOSHINO ,  Noboru SATO ,  Keisuke MURAWAKI

IPC: B01J23/63 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  B01J35/02 ,  B01J37/02 ,  B01J37/08 ,  B01D53/94 ,  F01N3/28 ,  F01N13/00

Abstract: An exhaust gas purification underfloor catalyst characterized in having a catalyst layer having a lower layer and an upper layer, the lower layer containing alumina and CeO2, the noble metal content of the lower layer being at most 0.5 mass % in relation to the mass of the lower layer, the upper layer containing Rh, alumina, and CeO2, the amount of noble metals other than Rh contained being 1 mol % or less in relation to the total amount of noble metals contained in the upper layer, the total amount of CeO2 contained in the lower layer and the upper layer being 14 g/L to 30 g/L, the amount of CeO2 contained in the upper layer being 7 g/L to 25 g/L, and the amount of CeO2 contained in the lower layer being 20% or more of the amount of CeO2 contained in the upper layer.

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

IPC: B01D53/94 ,  B01J23/63 ,  B01J37/04 ,  B01J23/10

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.