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    DUAL-STAGE METHOD FOR THE REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYSTS
    3.
    发明申请
    DUAL-STAGE METHOD FOR THE REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYSTS 有权
    热老化氧化物储存催化剂反应的双阶段方法

    公开(公告)号：US20100300077A1

    公开(公告)日：2010-12-02

    申请号：US12599411

    申请日：2008-04-16

    Applicant: Stephan Eckhoff

    Inventor： Stephan Eckhoff

    IPC: F01N3/08 ,  B01J38/06 ,  B01J38/08 ,  B01J38/10

    CPC classification number: B01J35/002 ,  B01D53/9422 ,  B01D53/96 ,  B01D2255/2042 ,  B01D2255/2065 ,  B01J23/002 ,  B01J23/63 ,  B01J23/96 ,  B01J38/04 ,  B01J38/06 ,  B01J38/08 ,  B01J2523/00 ,  B01J2523/25 ,  B01J2523/3712 ,  B01J2523/828

    Abstract: Nitrogen oxide storage catalysts are used to remove the nitrogen oxides present in the lean exhaust gas of lean-burn engines. As a result of the stress due to high temperatures in vehicle operation, they are subject to thermal aging processes which affect both the nitrogen oxide storage components and the noble metals present as catalytically active components.The present invention provides a process with which the catalytic activity of a nitrogen oxide storage catalyst which comprises, in addition to platinum as a catalytically active component, basic compounds of strontium and/or barium on a support material comprising cerium oxide, said catalytic activity being lost owing to the thermal aging process, can be at least partly restored. The two-stage process is based on the fact that strontium and/or barium compounds formed during the thermal aging with the support material, which also comprise platinum, are recycled to the catalytically active forms by controlled treatment with specific gas mixtures.

    Abstract translation: 氮氧化物储存催化剂用于去除贫燃发动机的贫废气中存在的氮氧化物。 由于车辆操作中的高温引起的应力的结果，它们受到影响作为催化活性组分存在的氮氧化物存储组分和贵金属两者的热老化过程。 本发明提供了一种氮氧化物储存催化剂的催化活性的方法，除了铂作为催化活性组分之外，还包括锶和/或钡的碱性化合物在包含氧化铈的载体材料上，所述催化活性为 由于热老化过程而损失，可以至少部分恢复。 两阶段工艺是基于以下事实：在热老化期间形成的锶和/或钡化合物与支撑材料（其也包含铂）通过用特定气体混合物的控制处理再循环至催化活性形式。

    Zeolitic catalyst having selectivity for jet fuel
    4.
    发明授权
    Zeolitic catalyst having selectivity for jet fuel 失效
    具有喷射燃料选择性的ZEOLITIC催化剂

    公开(公告)号：US5141909A

    公开(公告)日：1992-08-25

    申请号：US644056

    申请日：1991-01-22

    Applicant: Richard D. Bezman

    Inventor： Richard D. Bezman

    IPC: B01J29/12 ,  B01J38/08 ,  C10G47/18

    CPC classification number: C10G47/18 ,  B01J29/126

    Abstract: A catalyst prepared from a ultra-stable Y-type zeolite having a silica/alumina ratio from about 27 to about 33 with the free acid sites passivated using a basic nitrogen-containing compound showing improved selectivity for jet fuel; a process for preparing the catalyst; and a method for producing jet fuel.

    Abstract translation: 使用二氧化硅/氧化铝比为约27至约33的超稳定Y型沸石制备的催化剂，其中游离酸性位点使用显示出改进的喷气燃料选择性的碱性含氮化合物被钝化; 一种制备催化剂的方法; 以及生产喷气燃料的方法。

    Porous carbon-based metal catalyst as well as preparation method and application thereof
    6.
    发明授权
    Porous carbon-based metal catalyst as well as preparation method and application thereof 有权

    公开(公告)号：US11370659B2

    公开(公告)日：2022-06-28

    申请号：US17426105

    申请日：2020-07-09

    Applicant: CQC INTIME TESTING TECHNOLOGY CO., LTD.

    Inventor： Yixin Zhu ,  Jie Wang

    IPC: C01B3/06 ,  B01J21/18 ,  B01J23/835 ,  B01J27/24 ,  B01J35/02 ,  B01J37/02 ,  B01J37/06 ,  B01J37/08 ,  B01J37/34 ,  B01J38/08 ,  H01M4/88 ,  H01M4/96

    Abstract: A porous carbon-based metal catalyst, a preparation method and application thereof are provided. The preparation method includes: successively performing activation, surface corrosion, nitrogen-doping treatment and graphitization treatment on washed micro-grade porous carbon, then performing sensitization treatment, and subsequently carrying out loading, reduction and other treatments of catalytic metal, so as to finally obtain the porous carbon-based metal catalyst. The porous carbon-based metal catalyst provided by the present application has excellent catalytic performance, is especially suitable for producing hydrogen by efficiently catalytically decomposing ammonia borane, is not prone to inactivation, and is easy to regenerate after inactivation. Meanwhile, the preparation method is environmental-friendly, is suitable for large-scale production and has a wide application prospect in the fields such as hydrogen fuel batteries.

    DESULFATION METHOD FOR SCR CATALYST
    8.
    发明申请
    DESULFATION METHOD FOR SCR CATALYST 审中-公开

    公开(公告)号：US20190083967A1

    公开(公告)日：2019-03-21

    申请号：US16142451

    申请日：2018-09-26

    Applicant: BASF Corporation

    Inventor： Xiaofan Yang ,  Weiyong Tang ,  Ze Zhang

    IPC: B01J38/08 ,  B01J29/90 ,  B01J29/76 ,  B01D53/94 ,  B01D53/96 ,  F01N3/20 ,  F01N3/28

    Abstract: The present invention provides methods for low temperature desulfating sulfur-poisoned SCR catalysts, and emission control systems adapted to apply such desulfating methods, in order to regenerate catalytic NOx conversion activity. The methods are adapted for treating an SCR catalyst to desorb sulfur from the surface of the SCR catalyst and increase NOx conversion activity of the SCR catalyst, the treating step including treating the SCR catalyst with a gaseous stream comprising a reductant for a first treatment time period and at a first treatment temperature, wherein the first treatment temperature is about 350° C. or less, followed by a second treatment time period and a second treatment temperature higher than the first treatment temperature, wherein the molar ratio of reductant to NOx during the treating step is about 1.05:1 or higher.

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