公开(公告)号：ZA201800320B

公开(公告)日：2021-05-26

申请号：ZA201800320

申请日：2018-01-17

Applicant: BASF CORP

Inventor： DEEBA MICHEL ,  SUN YIPENG ,  LUO TIAN ,  LEUNG EMI ,  RUVINSKIY PAVEL ,  DANG DINH

Abstract: Provided are automotive catalyst composites having a catalytic material on a carrier, wherein the catalytic material comprises at least two layers. The first layer is deposited directly on the carrier and comprises a first palladium component supported on a first refractory metal oxide component, a first oxygen storage component, or a combination thereof. The second layer is deposited on top of the first layer and comprises a rhodium component supported on a second refractory metal oxide component and a second palladium component supported on a second oxygen storage component, a third refractory metal oxide component or a combination thereof. Generally these catalyst composites are used as three-way conversion (TWC) catalysts. Methods of making and using the same are also provided.

公开(公告)号：CA3051678A1

公开(公告)日：2018-08-02

申请号：CA3051678

申请日：2018-01-26

Applicant: BASF CORP

Inventor： LUO TIAN ,  DEEBA MICHEL ,  GU YUNLONG ,  DEUERLEIN STEPHAN ,  LEUNG EMI

IPC: B01J35/00 ,  B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/40 ,  B01J35/02 ,  B01J37/00 ,  B01J37/16

Abstract: The present invention relates to catalyst compositions effective for carrying out three-way conversion including platinum group metal nanoparticles (e.g., nanoparticles of Pt, Pd, Au, Ru, Rh, alloys thereof, and mixtures thereof), the nanoparticles having an average particle size of 15 to 50 nm, wherein the nanoparticles are dispersed on a refractory metal oxide component. In some such catalyst compositions, a significant portion, e.g., at least 90% of the nanoparticles have a particle size within this range. Methods of preparing, and using such catalyst compositions as well as catalyst articles and emission treatment systems comprising such catalyst compositions are also provided herein.

公开(公告)号：CA2990427A1

公开(公告)日：2016-12-29

申请号：CA2990427

申请日：2016-06-24

Applicant: BASF CORP

Inventor： DEEBA MICHEL ,  SUN YIPENG ,  LUO TIAN ,  LEUNG EMI ,  RUVINSKIY PAVEL ,  DANG DINH

IPC: B01J23/46 ,  B01D53/94 ,  B01J21/04 ,  B01J21/06 ,  B01J23/02 ,  B01J23/10 ,  B01J23/40 ,  B01J23/44 ,  F01N3/28

Abstract: Provided are automotive catalyst composites having a catalytic material on a carrier, wherein the catalytic material comprises at least two layers. The first layer is deposited directly on the carrier and comprises a first palladium component supported on a first refractory metal oxide component, a first oxygen storage component, or a combination thereof. The second layer is deposited on top of the first layer and comprises a rhodium component supported on a second refractory metal oxide component and a second palladium component supported on a second oxygen storage component, a third refractory metal oxide component or a combination thereof. Generally these catalyst composites are used as three-way conversion (TWC) catalysts. Methods of making and using the same are also provided.

公开(公告)号：CA3025299A1

公开(公告)日：2017-11-30

申请号：CA3025299

申请日：2017-05-09

Applicant: BASF CORP

Inventor： DEEBA MICHEL ,  LUO TIAN ,  GU YUNLONG ,  LEUNG EMI

IPC: B01J23/40 ,  B01D53/94 ,  B01J21/06 ,  B01J23/10 ,  B01J23/56 ,  B01J35/00 ,  F01N3/20

Abstract: The invention provides an automotive catalyst composite effective for abating carbon monoxide, hydrocarbons, and NOx emission in an automotive exhaust gas stream, which includes a catalytic material on a carrier, the catalytic material including a plurality of core-shell support particles comprising a core and a shell surrounding the core, the core including a plurality of particles having a primary particle size distribution d90 of up to about 5 µm, wherein the core particles comprise particles of one or more metal oxides, the shell including nanoparticles of one or more metal oxides, wherein the nanoparticles have a primary particle size distribution d90 in the range of about 5 nm to about 1000 nm (1 µm), and one or more platinum group metals (PGMs) on the core-shell support. The invention also provides an exhaust gas treatment system and related method of treating exhaust gas utilizing the catalyst composite.