公开(公告)号：US20220055021A1

公开(公告)日：2022-02-24

申请号：US17309658

申请日：2019-12-12

Applicant: BASF CORPORATION

Inventor： Fudong LIU ,  Michel DEEBA ,  Ke-Bin LOW

IPC: B01J23/58 ,  B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/44 ,  B01J23/00 ,  B01J37/04 ,  B01J37/08 ,  B01J37/02 ,  B01J37/03 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28 ,  F01N3/10

Abstract: The presently claimed invention provides a layered three-way catalyst composition for purification of exhaust gases from internal combustion engines; said catalyst comprises a first layer comprising i) palladium supported on at least one alumina component and at least one oxygen storage component; and ii) barium oxide; wherein said first layer is essentially free of strontium, and a second layer comprising: i) rhodium supported on at least one zirconia component and/or alumina component; ii) strontium oxide and/or barium oxide; and iii) optionally, palladium supported on at least one alumina component. The presently claimed invention also provides a process for preparing the layered three-way catalyst composition which involves a technique such as incipient wetness impregnation technique(A); co-precipitation technique (B); or co-impregnation technique(C). The process includes preparing a first layer; preparing a second layer; and depositing the second layer on the first layer followed by calcination. The presently claimed invention further provides a a layered three-way catalytic article in which the three-way catalyst composition is deposited on a substrate in a layered fashion and its preparation.

公开(公告)号：US20250014366A1

公开(公告)日：2025-01-09

申请号：US18577618

申请日：2022-07-13

Applicant: BASF Corporation

Inventor： Karl C. KHARAS ,  Ke-Bin LOW ,  David J. CAMEROTA ,  Xingtao GAO

IPC: G06V20/69 ,  G01N15/08 ,  G06T7/11 ,  G06V10/764

Abstract: Methods, systems, and computer readable media are disclosed for characterizing the porosity of a microspheric material, training a classifier model for classifying spatially-contiguous image regions of backscatter electron scanning electron microscopy (BSE-SEM) images of a microspheric material according to the particle composition of the image regions, and characterizing the elemental composition of a microspheric material. The methods include: receiving image data representative of a microscopic images of a sample microspheric material; segmenting the image data into a plurality of spatially-contiguous image regions; classifying, by a trained machine-learning model, each of the plurality of spatially-contiguous image regions; and characterizing the microspheric material. The disclosure also relates to compositions for use as an FCC catalyst comprising microspheres which comprise alumina and/or clay and/or a zeolite.

公开(公告)号：US20220212178A1

公开(公告)日：2022-07-07

申请号：US17594775

申请日：2020-04-28

Applicant: BASF Corporation

Inventor： Fudong LIU ,  Michel DEEBA ,  Ke-Bin LOW ,  Haiyang ZHU

IPC: B01J35/00 ,  B01J35/10 ,  B01J23/44 ,  B01J21/04 ,  B01J35/02 ,  B01J23/46 ,  B01J37/08 ,  B01J23/10 ,  B01J37/03 ,  B01J37/04 ,  B01J21/06 ,  B01J23/02 ,  B01D53/94 ,  F01N3/28

Abstract: The presently claimed invention provides an automotive catalyst comprising a platinum group metal selected from palladium, platinum, rhodium and any combination thereof; metal oxide nanoparticles; and a carrier, wherein the platinum group metal and the metal oxide nanoparticles are homogeneously dispersed on the carrier such as alumina component. The metal oxide nanoparticles have a D90 diameter in the range of 1.0 nm to 50 nm. The presently claimed invention also provides a layered catalytic article comprising catalyst comprising at least one platinum group metal; metal oxide nanoparticles; and a carrier. The presently claimed invention also provides a process for preparing the catalyst and the catalytic article, and a method of treating a gaseous exhaust stream comprising contacting the stream with the catalyst or catalytic article.