Catalyst for isomerizing alkylaromatics
    1.
    发明授权
    Catalyst for isomerizing alkylaromatics 失效
    烷基芳族异构化催化剂

    公开(公告)号:US4962259A

    公开(公告)日:1990-10-09

    申请号:US447274

    申请日:1989-12-07

    IPC分类号: C07C5/27

    CPC分类号: C07C5/2724

    摘要: This invention presents a novel catalyst formulation for the isomerization of alkylaromatic hydrocarbons. The catalyst is comprised of at least one Group VIII metal, and a pentasil zeolite having an x-ray diffraction characteristic of ZSM-12 wherein a portion of the aluminum atoms have been replaced with gallium atoms. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of paraxylene is obtained compared to prior-art processes.

    摘要翻译: 本发明提出了用于烷基芳族烃异构化的新型催化剂配方。 催化剂由至少一种VIII族金属和具有ZSM-12的X射线衍射特性的pentasil沸石组成,其中一部分铝原子被镓原子代替。 当用于异构化含有乙苯的二甲苯的非平衡混合物的方法中时,与现有技术方法相比,获得更高的对二甲苯收率。

    Catalyst for isomerizing alkylaromatics
    2.
    发明授权
    Catalyst for isomerizing alkylaromatics 失效
    烷基芳族异构化催化剂

    公开(公告)号:US5081084A

    公开(公告)日:1992-01-14

    申请号:US542611

    申请日:1990-06-25

    IPC分类号: C07C5/27

    CPC分类号: C07C5/2724

    摘要: This invention presents a novel catalyst formulation for the isomerization of alkylaromatic hydrocarbons. The catalyst is comprised of at least one Group VII metal, and a pentasil zeolite having an x-ray diffraction characteristic of ZSM-12 wherein a portion of the aluminum atoms have been replaced with gallium atoms. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of para-xylene is obtained compared to prior-art processes.

    摘要翻译: 本发明提出了用于烷基芳族烃异构化的新型催化剂配方。 该催化剂由至少一种第Ⅶ族金属和具有ZSM-12的X射线衍射特性的pentasil沸石组成,其中一部分铝原子被镓原子代替。 当用于异构化含有乙苯的二甲苯的非平衡混合物的方法中时,与现有技术方法相比,获得更高的对二甲苯产率。

    Catalyst for isomerizing alkylaromatics
    3.
    发明授权
    Catalyst for isomerizing alkylaromatics 失效
    烷基芳族异构化催化剂

    公开(公告)号:US4957891A

    公开(公告)日:1990-09-18

    申请号:US448445

    申请日:1989-12-11

    IPC分类号: C07C5/27

    CPC分类号: C07C5/2724

    摘要: This invention presents a novel catalyst formulation for the isomerization of alkylaromatic hydrocarbons. The catalyst comprises at least one Group VIII metal, a pentasil zeolite wherein a portion of the aluminum atom has been replaced with gallium atoms and a matrix material of zirconia-alumina. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of para-xylene is obtained compared to prior art processes.

    摘要翻译: 本发明提出了用于烷基芳族烃异构化的新型催化剂配方。 该催化剂包含至少一种Ⅷ族金属,其中一部分铝原子被镓原子取代的五硅烷沸石和氧化锆 - 氧化铝的基质材料。 当用于异构化含有乙苯的二甲苯的非平衡混合物的方法中时,与现有技术方法相比,获得了更高的对二甲苯的产率。

    Trimetallic reforming catalyst
    8.
    发明授权
    Trimetallic reforming catalyst 失效
    三金属重整催化剂

    公开(公告)号:US4714538A

    公开(公告)日:1987-12-22

    申请号:US036732

    申请日:1987-04-10

    摘要: A novel trimetallic catalytic composite, a method of manufacture and process use thereof is disclosed. The composite comprises a refractory support having a nominal diameter of at least 650 microns and having deposited thereon a uniformly dispersed platinum component, a uniformly dispersed tin component and a surface-impregnated metal component selected from the group consisting of rhodium, ruthenium, cobalt, nickel, or iridium. When this catalytic composite is used in the reforming of hydrocarbons at low pressures significant improvements in activity stability is observed compared to catalysts of the prior art.

    摘要翻译: 公开了一种新型的三金属催化复合材料,其制造方法和工艺用途。 复合材料包括具有至少650微米的标称直径的耐火支撑体,并且在其上沉积有均匀分散的铂组分,均匀分散的锡组分和选自铑,钌,钴,镍的表面浸渍金属组分 ,或铱。 当这种催化复合材料用于低压烃转化时,与现有技术的催化剂相比,观察到活性稳定性显着改善。

    Preparation of ceramics
    9.
    发明授权
    Preparation of ceramics 失效
    陶瓷的制备

    公开(公告)号:US4608215A

    公开(公告)日:1986-08-26

    申请号:US565077

    申请日:1983-12-23

    IPC分类号: C01B33/22 C04B35/20 C04B35/14

    CPC分类号: C04B35/20 C01B33/22

    摘要: Ceramic materials comprising steatite or forsterite which are highly dense in nature may be prepared by admixing a hydrolyzed alcoholic solution of a silicon alkoxide with a solution prepared by adding an organomagnesium compound to an alcohol at gelation conditions. Following the formation of the gel, it is then dried at an elevated temperature of from about 300.degree. to about 500.degree. C. to remove volatile compounds as well as to decompose any remaining organic compounds and thereafter the powder is pressed into a desired shape. The formed shape is then sintered at a temperature in the range of from about 850.degree. to about 950.degree. C. to form a densified ceramic.

    摘要翻译: 包含高密度性质的滑石或镁橄榄石的陶瓷材料可以通过将硅醇盐的水解醇溶液与通过在凝胶化条件下向醇中加入有机镁化合物而制备的溶液混合来制备。 在形成凝胶之后,然后在约300℃至约500℃的高温下干燥以除去挥发性化合物以及分解任何剩余的有机化合物,然后将粉末压制成所需形状。 然后将形成的形状在约850℃至约950℃的温度下烧结以形成致密的陶瓷。