公开(公告)号：US20210354110A1

公开(公告)日：2021-11-18

申请号：US17284977

申请日：2019-11-11

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Yuji OGINO ,  Masanori IKEDA ,  Hideki GOTO

IPC: B01J21/04 ,  B01J35/10 ,  B01J35/04 ,  F01N3/08 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J37/02 ,  B01J37/08

Abstract: A gasoline engine exhaust gas purification catalyst for purifying exhaust gas emitted from a gasoline engine includes a precious metal, alumina, and a ceria/zirconia composite oxide supported on a three-dimensional structure, and has pores having a peak 1 at a pore size of not less than 0.001 μm and not greater than 0.05 μm, pores having a peak 2 at a pore size of not less than 2.5 μm and not greater than 5.0 μm, and pores having a peak 3 at a different pore size than the above pore sizes in a pore size distribution measured by mercury intrusion method, wherein the pore volume of the pores having the peak 3 is greater than 1.4% of the total pore volume. A production method for the catalyst, and an exhaust gas purification method using the catalyst are also described.

公开(公告)号：US20200047121A1

公开(公告)日：2020-02-13

申请号：US16342565

申请日：2017-10-18

Applicant: Umicore Shokubai Japan Co., Ltd.

Inventor： Kenji Ashikari ,  Masanori IKEDA ,  Shigekazu MINAMI ,  Masashi NAKASHIMA ,  Hideki GOTO

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

Abstract: The present invention provides an exhaust gas purifying catalyst which can maintain high catalyst activity even after the exhaust gas purifying catalyst is exposed to an exhaust gas at a high temperature for a long period of time. The exhaust gas purifying catalyst contains a Pd—Pr complex and PdO, and the Pd—Pr complex is represented by PraPdbOc, where a=1 to 3, b=1 to 10, and c=1 to 6.

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：US20180133651A1

公开(公告)日：2018-05-17

申请号：US15564085

申请日：2016-04-07

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Shigekazu MINAMI ,  Masanori IKEDA ,  Yuta AKASAKA ,  Hirotaka KUNO ,  Hideki GOTO

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/06 ,  B01J23/10 ,  B01J23/63

CPC classification number: B01D53/9445 ,  B01D53/94 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2258/01 ,  B01J21/04 ,  B01J23/002 ,  B01J23/02 ,  B01J23/06 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/023 ,  B01J35/04 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/038 ,  F01N3/10 ,  Y02T10/22

Abstract: An object is to provide a means for suppressing a deterioration in catalytic performance even after being exposed to high temperature exhaust gas containing a phosphorus compound for a long period of time.An exhaust gas purifying catalyst including palladium supported on cerium-aluminum composite oxide containing cerium at from 3 to 60% by mass in terms of cerium oxide.