Activation energy reducers for catalytic oxidation of gaseous mixtures

    公开(公告)号:US11179700B2

    公开(公告)日:2021-11-23

    申请号:US16485982

    申请日:2017-02-20

    Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.5 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.

    Transesterification process
    2.
    发明授权
    Transesterification process 有权
    酯交换过程

    公开(公告)号:US09394224B2

    公开(公告)日:2016-07-19

    申请号:US14382687

    申请日:2013-02-11

    CPC classification number: C07C67/02 C07D233/34 Y02P20/582

    Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.

    Abstract translation: 酯交换方法由包含(甲基)丙烯酸烷基酯反应物,醇反应物,催化剂和阻聚剂的混合物产生(甲基)丙烯酸酯产物,其中在酯交换步骤开始时反应区中的水含量 基于反应区中材料的重量,为0.2-1.1重量%。 使混合物经受足以产生与反应物不同的产物(甲基)丙烯酸酯和产物醇的反应条件。

    TRANSESTERIFICATION PROCESS
    3.
    发明申请
    TRANSESTERIFICATION PROCESS 有权
    转换过程

    公开(公告)号:US20150045583A1

    公开(公告)日:2015-02-12

    申请号:US14382686

    申请日:2013-02-11

    CPC classification number: C07C67/317 C07C67/03 C07D233/32 Y02P20/582 C07C69/54

    Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.

    Abstract translation: 酯交换方法由包含(甲基)丙烯酸烷基酯反应物,醇反应物,催化剂和阻聚剂的混合物产生(甲基)丙烯酸酯产物。 使混合物经受足以产生与反应物不同的产物(甲基)丙烯酸酯和产物醇的反应条件。

    ACTIVATION ENERGY REDUCERS FOR CATALYTIC OXIDATION OF GASEOUS MIXTURES

    公开(公告)号:US20200230577A1

    公开(公告)日:2020-07-23

    申请号:US16485982

    申请日:2017-02-20

    Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.5 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.

    ACTIVATION ENERGY REDUCERS FOR CATALYTIC OXIDATION OF GASEOUS MIXTURES

    公开(公告)号:US20170225152A1

    公开(公告)日:2017-08-10

    申请号:US15407278

    申请日:2017-01-17

    CPC classification number: B01J23/464 B01J35/06 C01C3/0216

    Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.25 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.

    TRANSESTERIFICATION PROCESS
    9.
    发明申请
    TRANSESTERIFICATION PROCESS 有权
    转换过程

    公开(公告)号:US20150045578A1

    公开(公告)日:2015-02-12

    申请号:US14382687

    申请日:2013-02-11

    CPC classification number: C07C67/02 C07D233/34 Y02P20/582

    Abstract: A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants.

    Abstract translation: 酯交换方法由包含(甲基)丙烯酸烷基酯反应物,醇反应物,催化剂和阻聚剂的混合物产生(甲基)丙烯酸酯产物,其中在酯交换步骤开始时反应区中的水含量 基于反应区中材料的重量,为0.2-1.1重量%。 使混合物经受足以产生与反应物不同的产物(甲基)丙烯酸酯和产物醇的反应条件。

    Activation energy reducers for catalytic oxidation of gaseous mixtures

    公开(公告)号:US10143998B2

    公开(公告)日:2018-12-04

    申请号:US15407278

    申请日:2017-01-17

    Abstract: The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.25 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.

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