公开(公告)号：US09827562B2

公开(公告)日：2017-11-28

申请号：US15247506

申请日：2016-08-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Ryan J. Day ,  Se H. Oh ,  Xingcheng Xiao ,  Ming Yang

IPC: B01D53/94 ,  B01J21/04 ,  B01J23/44 ,  B01J33/00 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  B01J37/18 ,  C23C16/455 ,  F01N3/10

CPC classification number: B01J33/00 ,  B01D53/88 ,  B01D53/944 ,  B01D53/945 ,  B01D2251/2067 ,  B01D2255/1023 ,  B01D2255/2092 ,  B01D2255/90 ,  B01D2258/012 ,  B01J21/04 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/026 ,  B01J37/0221 ,  B01J37/0248 ,  B01J37/18 ,  B01J37/349 ,  C23C16/45555 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2330/14 ,  F01N2370/00 ,  Y02T10/22

Abstract: A catalytic converter includes a catalyst. The catalyst includes a support, platinum group metal (PGM) particles dispersed on the support, and a barrier formed on the support. The barrier is disposed between a first set of the PGM particles and a second set of the PGM particles to suppress aging of the PGM particles.

公开(公告)号：US20170095806A1

公开(公告)日：2017-04-06

申请号：US15247506

申请日：2016-08-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Ryan J. Day ,  Se H. Oh ,  Xingcheng Xiao ,  Ming Yang

IPC: B01J33/00 ,  B01J21/04 ,  B01J35/00 ,  F01N3/10 ,  B01J37/02 ,  B01J37/18 ,  B01D53/94 ,  C23C16/455 ,  B01J23/44 ,  B01J35/02

CPC classification number: B01J33/00 ,  B01D53/88 ,  B01D53/944 ,  B01D53/945 ,  B01D2251/2067 ,  B01D2255/1023 ,  B01D2255/2092 ,  B01D2255/90 ,  B01D2258/012 ,  B01J21/04 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/026 ,  B01J37/0221 ,  B01J37/0248 ,  B01J37/18 ,  B01J37/349 ,  C23C16/45555 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2330/14 ,  F01N2370/00 ,  Y02T10/22

Abstract: A catalytic converter includes a catalyst. The catalyst includes a support, platinum group metal (PGM) particles dispersed on the support, and a barrier formed on the support. The barrier is disposed between a first set of the PGM particles and a second set of the PGM particles to suppress aging of the PGM particles.

公开(公告)号：US20210394159A1

公开(公告)日：2021-12-23

申请号：US16904724

申请日：2020-06-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Yang ,  Se H. Oh ,  Wei Li

IPC: B01J23/46 ,  F01N3/10 ,  F01N3/28 ,  B01J35/00 ,  B01J23/42 ,  B01J37/02

Abstract: Bimetallic three-way catalyst devices include a support body, one or more Rh bulk deposits disposed on the support body, and a plurality of Pt atomic clusters disposed on the surface of each of the Rh bulk deposits. Substantially no Pt is deposited on the support body. At least 85% by weight of the Pt atomic clusters comprise up to 10 atoms and the maximum Pt atomic cluster size is 200 Pt atoms. The combined loading of Rh and Pt can be less than 1.5% by weight relative to the weight of the support body. The molar ratio of Rh in a bulk Rh deposit to Pt disposed on the surface of that deposit is at least 5:1.

公开(公告)号：US20210170368A1

公开(公告)日：2021-06-10

申请号：US16704092

申请日：2019-12-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Yang ,  Se H. Oh ,  Gongshin Qi ,  Wei Li

IPC: B01J23/63 ,  B01J21/04 ,  B01J23/10 ,  B01J23/46 ,  B01J23/72 ,  B01J23/83 ,  B01J37/02 ,  B01J37/03 ,  B01J37/10 ,  B01J35/10 ,  B01D53/94

Abstract: Methods for preparing catalytic systems include passivating a gamma-phase alumina support body to yield a theta-phase alumina support body and applying catalytic metal to passivated theta-phase alumina support body. Passivating can include heating, optionally in the presence of steam. The gamma-phase alumina can be lanthanum-doped gamma-phase alumina and can be about 0.1-55 wt. % lanthanum. The catalytic metal can include rhodium, copper, or nickel. The catalytic metal can be rhodium or nickel, and the catalytic metal can be applied to the passivated theta-phase alumina support body at a loading of about 0.1-10 wt. %. The catalytic metal can be copper, and the catalytic metal can be applied to the passivated theta-phase alumina support body at a loading of about 0.1-30 wt. %. The gamma-phase alumina support body can be at least about 90 wt. % gamma-phase alumina. The passivated theta-phase alumina support body can be at least about 80 wt. % theta-phase alumina.

公开(公告)号：US20180214860A1

公开(公告)日：2018-08-02

申请号：US15419263

申请日：2017-01-30

Applicant: GM Global Technology Operations LLC

Inventor： Gongshin Qi ,  Se H. Oh ,  Ming Yang ,  Ryan J. Day ,  Wei Li

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

CPC classification number: B01J37/10 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1061 ,  B01J37/02 ,  B01J37/0207 ,  B01J37/08

Abstract: A method of stabilizing a catalyst system includes hydrothermally treating an aluminum oxide catalyst support having ≥about 95 volume % of γ-Al2O3 phase by heating to a temperature of about 800° C. to about 1,200° C. in the presence of water. A majority of the γ-Al2O3 is converted to a stable alumina phase selected from the group consisting of: θ-Al2O3, δ-Al2O3, and combinations thereof to form a stabilized porous aluminum oxide support having an average surface area of ≥about 50 m2/g to ≤about 150 m2/g. A platinum group metal is then bound to a surface of the stable porous aluminum oxide support to form the stabilized catalyst systems.

公开(公告)号：US10005031B2

公开(公告)日：2018-06-26

申请号：US14962531

申请日：2015-12-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shouxian Ren ,  Se H. Oh ,  Yong Miao

IPC: F01N3/10 ,  B01D53/94 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J23/50 ,  B01J23/63 ,  B01J29/068 ,  B01J29/072 ,  B01J29/076 ,  B01J35/00 ,  B01J37/02

CPC classification number: B01D53/9477 ,  B01D53/9418 ,  B01D53/944 ,  B01D2255/1023 ,  B01D2255/104 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/20784 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/407 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2258/012 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J23/50 ,  B01J23/63 ,  B01J29/061 ,  B01J29/068 ,  B01J29/072 ,  B01J29/076 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0246 ,  Y02T10/24

Abstract: A dual-layer catalyst includes a substrate, a first layer disposed on the substrate, and a second layer disposed on the first layer. The first layer includes a first catalyst for storing NOx when the first catalyst has a temperature below an active temperature of a second catalyst. The first catalyst is to release the stored NOx when the first catalyst is heated to the active temperature of the second catalyst. The second layer includes the second catalyst for ammonia Selective Catalytic Reduction of the released NOx. The dual-layer catalyst is to be included in a catalytic converter and a catalyst system for reducing NOx emissions from a diesel engine, the NOx emissions including NOx emitted during a predetermined cold-start time period.

公开(公告)号：US09855547B2

公开(公告)日：2018-01-02

申请号：US15247230

申请日：2016-08-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Se H. Oh ,  Wei Li

IPC: B01J21/04 ,  B01J21/06 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/63 ,  B01J37/02 ,  B01J37/08 ,  B01J37/12 ,  B01J35/04 ,  B01D53/94 ,  B01J35/00 ,  F01N3/28 ,  F01N3/10

CPC classification number: B01J23/44 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2255/9022 ,  B01J21/04 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2370/00 ,  Y02A50/2341 ,  Y02T10/22

Abstract: An example of a catalytic converter includes a catalyst to improve low temperature oxidation of carbon monoxide (CO) and hydrocarbons. The catalyst includes a support, which includes a porous alumina structure and a rare earth metal oxide promoter impregnated into pores of the porous alumina structure. The rare earth metal oxide promoter is selected from the group consisting of CeO2 and CeO2—ZrO2. A platinum group metal (PGM) is bonded to the support.