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    Methods for preparing catalytic systems
    2.
    发明授权
    Methods for preparing catalytic systems 有权

    公开(公告)号：US11376567B2

    公开(公告)日：2022-07-05

    申请号：US16704092

    申请日：2019-12-05

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

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

    摘要： 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.

    METHODS AND VEHICLES FOR HEALTH MONITORING VEHICLE SUBSTRATES AND COATINGS
    4.
    发明申请
    METHODS AND VEHICLES FOR HEALTH MONITORING VEHICLE SUBSTRATES AND COATINGS 审中-公开

    公开(公告)号：US20190371090A1

    公开(公告)日：2019-12-05

    申请号：US15995245

    申请日：2018-06-01

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Wen-Chiao Lin ,  Jingyan Wan ,  Jian Yao ,  Neeraj S. Shidore ,  Qiangfeng Xiao ,  Ming Yang ,  Paul E. Krajewski

    IPC分类号： G07C5/08 ,  G01B7/16 ,  G01L5/00

    摘要： Vehicles and methods are provided for monitoring the health of a substrate and a protective coating disposed on the substrate. A vehicle includes a substrate, a protective coating, a coating deformation sensor, and a controller. The protective coating is disposed overtop the substrate. The coating deformation sensor is operatively coupled with the protective coating and configured to measure a deformation value of the protective coating. The controller is configured to: determine a deformation recovery rate of the protective coating based on the deformation value; determine whether the deformation recovery rate corresponds with an expected recovery rate of the protective coating; and indicate that the protective coating may be impaired in response to determining that the deformation recovery rate does not correspond with the expected recovery rate.

    Platinum-containing catalyst systems
    9.
    发明授权
    Platinum-containing catalyst systems 有权

    公开(公告)号：US10926245B1

    公开(公告)日：2021-02-23

    申请号：US16547100

    申请日：2019-08-21

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC分类号： B01D53/94 ,  B01J23/42 ,  B01J33/00 ,  F01N3/10

    摘要： The present disclosure provides a method for operating a three-way catalyst system at high temperatures. The method includes passing a high-temperature exhaust stream exiting an engine over a thermally stable three-way catalyst system including a metal oxide support; two or more catalytically active metals disposed on the support; and a porous metal oxide coating disposed on one or more exposed surfaces of the support. At least one of the catalytically active metals may be platinum (Pt). The method further includes reducing an amount of the nitrogen oxides (NOx), carbon monoxide (CO), and non-methane hydrocarbons (HCs) in an effluent stream exiting the thermally stable three-way catalyst system so that the effluent stream has a combined amount of nitrogen oxides (NOx) and non-methane hydrocarbons (HCs) of less than or equal to about 30 mg/mile and less than or equal to about 0.5 g/mile of carbon monoxide (CO).

    METHODS FOR PREPARING CATALYST SYSTEMS
    10.
    发明申请
    METHODS FOR PREPARING CATALYST SYSTEMS 审中-公开

    公开(公告)号：US20200047160A1

    公开(公告)日：2020-02-13

    申请号：US16056894

    申请日：2018-08-07

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Xingcheng Xiao ,  Ming Yang ,  Gongshin Qi ,  Wei Li

    IPC分类号： B01J23/66 ,  B01J35/02 ,  B01J37/02

    摘要： Methods for preparing a catalyst system, include providing a catalytic substrate comprising a catalyst support having a surface with a plurality of metal catalytic nanoparticles bound thereto and physically mixing and/or electrostatically combining the catalytic substrate with a plurality of oxide coating nanoparticles to provide a coating of oxide coating nanoparticles on the surface of the catalytic nanoparticles. The metal catalytic nanoparticles can be one or more of ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and gold. Physically combining can include combining via ball milling, blending, acoustic mixing, or theta composition, and the oxide coating nanoparticles can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, lanthanum, iron, strontium, and calcium. The catalyst support can include one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, barium, iron, strontium, and calcium.