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    Nitric oxide oxidation over silver-based catalysts
    11.
    发明授权
    Nitric oxide oxidation over silver-based catalysts 有权
    银基催化剂上的一氧化氮氧化

    公开(公告)号：US08906331B2

    公开(公告)日：2014-12-09

    申请号：US13664486

    申请日：2012-10-31

    Applicant: GM Global Technology Operations LLC

    Inventor： Calvin K. Koch ,  Gongshin Qi ,  Steven J. Schmieg ,  Wei Li

    IPC: B01D53/94 ,  F01N3/20

    CPC classification number: B01D53/9477 ,  B01D53/9431 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/104 ,  B01D2255/2092 ,  B01D2255/91 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/2066 ,  Y02A50/2325

    Abstract: Ag/Al2O3 materials may be packaged in a suitable flow-through reactor, close coupled to the exhaust manifold of a diesel engine, and upstream of other exhaust gas treatment devices, such as a diesel oxidation catalyst and a selective reduction catalyst for NOx. The silver/alumina catalyst material uses hydrogen in a cold-start engine exhaust and serves to oxidize NO to NO2 in the relatively low temperature, hydrocarbon-containing, exhaust during a short period following the engine cold start, and to temporarily store NOx during the start-up period. After the exhaust has heated downstream catalytic devices, the silver yields its nitrogen oxides for conversion to nitrogen by the then-operating devices before NOx is discharged to the atmosphere.

    Abstract translation: Ag / Al2O3材料可以包装在合适的流通反应器中，紧密耦合到柴油发动机的排气歧管，以及其它废气处理装置（例如柴油氧化催化剂和用于NOx的选择性还原催化剂）的上游。 银/氧化铝催化剂材料在冷启动发动机排气中使用氢气，并且用于在发动机冷起动之后的短时间内在相对低温的含烃废气中将NO氧化为NO 2，并在 启动期。 在排气已经加热下游催化装置之后，在NOx排放到大气中之前，银产生其氮氧化物以便通过操作装置转化为氮气。

    Lithiation additive for a positive electrode
    12.
    发明授权
    Lithiation additive for a positive electrode 有权

    公开(公告)号：US11799083B2

    公开(公告)日：2023-10-24

    申请号：US17446116

    申请日：2021-08-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jiazhi Hu ,  Gongshin Qi

    IPC: H01M4/00 ,  H01M4/525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/02

    CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M4/582 ,  H01M4/5805 ,  H01M2004/027 ,  H01M2004/028

    Abstract: The present disclosure provides an electrochemical cell that cycles lithium ions. The electrochemical cell includes a positive electrode and a negative electrode. The positive electrode includes a positive electroactive material and a lithiation additive blended with the positive electroactive material. The lithiation additive includes a lithium-containing material and one or more metals. The lithium-containing material is represented by LiX, where X is hydrogen (H), oxygen (O), nitrogen (N), fluorine (F), phosphorous (P), or sulfur (S). The one or more metals are selected from the group consisting of: iron (Fe), copper (Cu), cobalt (Co), manganese (Mn), and combinations thereof. The negative electrode may include a volume-expanding negative electroactive material.

    Methods for preparing catalyst systems
    14.
    发明授权
    Methods for preparing catalyst systems 有权

    公开(公告)号：US10919026B2

    公开(公告)日：2021-02-16

    申请号：US16056894

    申请日：2018-08-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Xingcheng Xiao ,  Ming Yang ,  Gongshin Qi ,  Wei Li

    IPC: B01J23/66 ,  B01J35/02 ,  B01J37/02 ,  B82Y40/00 ,  B82Y30/00

    Abstract: 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.

    Ion adsorption of oxide layers to hinder catalyst sintering
    15.
    发明授权
    Ion adsorption of oxide layers to hinder catalyst sintering 有权

    公开(公告)号：US10562017B2

    公开(公告)日：2020-02-18

    申请号：US15399151

    申请日：2017-01-05

    Applicant: GM Global Technology Operations LLC

    Inventor： Ming Yang ,  Gongshin Qi ,  Ryan J. Day ,  Xingcheng Xiao ,  Wei Li

    IPC: B01J35/00 ,  B01J23/42 ,  B01J23/44 ,  B01J37/08

    Abstract: Catalysts that are resistant to high-temperature sintering and methods for preparing such catalysts that are resistant to sintering at high temperatures are provided. The catalyst may be prepared by contacting a solution comprising an ionic species with one or more charged surface regions of a catalyst support. A surface of the catalyst support further includes one or more catalyst particles disposed adjacent to the one or more charged surface regions. The ionic species has a first charge opposite to a second charge of the one or more charged surface regions. Next, the ionic species is associated with the one or more charged surface regions to form a layer on the one or more select surface regions. The layer is calcined to generate a coating comprising metal oxide on the one or more select surface regions, where the coating is formed adjacent to the one or more catalyst particles.

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