公开(公告)号：US20150367328A1

公开(公告)日：2015-12-24

申请号：US14764350

申请日：2014-01-31

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Masanori IKEDA ,  Kazuyoshi KOMATA ,  Shigekazu MINAMI ,  Yuji OGINO ,  Hideki GOTO

IPC: B01J23/63 ,  B01D53/94 ,  B01J35/00

CPC classification number: B01J23/63 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/40 ,  B01D2255/407 ,  B01D2255/9022 ,  B01J23/002 ,  B01J35/0006 ,  B01J35/002 ,  B01J37/0036 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/04 ,  B01J37/28 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/31 ,  B01J2523/36 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/824

Abstract: As a way to suppress deterioration of catalytic performance in an exhaust gas purification catalyst even after being exposed to an exhaust gas containing a phosphorus compound, an exhaust gas purification catalyst is provided. The catalyst purifies an exhaust gas containing a phosphorus compound, and the catalyst includes a catalyst layer containing rhodium (Rh), palladium (Pd), and either a ceria-zirconia-lanthana complex oxide or a ceria-zirconia-lanthana-yttria complex oxide as catalyst active components. Further, an average value of distances between Rh particles and the nearest Pd particles of the Rh and the Pd is within 4000 nm, a weight ratio of the Pd to the Rh is from 0.2 to 4.9, and a content rate of yttria in the ceria-zirconia-lanthana-yttria complex oxide is 19% by weight or less.

Abstract translation: 作为排出气体净化催化剂的催化性能劣化的方法，即使在暴露于含有磷化合物的废气的情况下也能够提供排气净化催化剂。 催化剂净化含有磷化合物的废气，催化剂包括含有铑（Rh），钯（Pd）和二氧化铈 - 氧化锆 - 氧化镧复合氧化物或二氧化铈 - 氧化锆 - 氧化镧 - 氧化钇复合氧化物的催化剂层 作为催化剂活性成分。 此外，Rh颗粒与Rh和Pd的最近的Pd颗粒之间的距离的平均值在4000nm以内，Pd与Rh的重量比为0.2-4.9，二氧化铈中的氧化钇含量 氧化锆 - 氧化镧 - 氧化钇复合氧化物的重量百分比为19重量％以下。

公开(公告)号：US20200049041A1

公开(公告)日：2020-02-13

申请号：US16607392

申请日：2018-04-26

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Hirotaka KUNO ,  Masashi NAKASHIMA ,  Kenji ASHIKARI ,  Yuji OGINO ,  Kazuyoshi KOMATA ,  Shigekazu MINAMI

IPC: F01N3/022 ,  B01J23/44

Abstract: In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region (2) containing palladium on a three-dimensional structure (1), and a first region (3) and a second region (4) provided on the region (2) in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of neodymium contained in the first region (3) is higher than the concentration of neodymium contained in the second region (4).

公开(公告)号：US20190291083A1

公开(公告)日：2019-09-26

申请号：US16318424

申请日：2017-07-20

Applicant: Umicore Shokubai Japan Co., Ltd.

Inventor： Kazuyoshi KOMATA ,  Hirotaka KUNO ,  Yuzo HAMADA ,  Masashi NAKASHIMA ,  Yuji OGINO ,  Masanori IKEDA

IPC: B01J23/63 ,  B01J37/02 ,  B01J37/03 ,  B01J37/10 ,  B01J21/04 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01D53/94 ,  F01N3/10

Abstract: The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.