Attrition resistant zeolitic layered catalyst composition and aromatics alkylation process for using the composition
    1.
    发明授权
    Attrition resistant zeolitic layered catalyst composition and aromatics alkylation process for using the composition 有权
    耐磨沸石层状催化剂组合物和芳烃烷基化方法使用该组合物

    公开(公告)号:US06376730B1

    公开(公告)日:2002-04-23

    申请号:US09603769

    申请日:2000-06-26

    IPC分类号: C07C266

    摘要: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone. Such conditions are known to promote reduced byproduct formation.

    摘要翻译: 公开了一种分层催化剂组合物,其中通过将包含结合的沸石(例如β沸石)的外层粘合到内芯材料(例如堇青石)来制备组合物。 在催化剂制备方法中使用有机粘合剂提供了足够耐机械磨损的组合物,其可以在芳族烷基化方法(例如苯烷基化至乙苯)中商业使用。 与使用分层组合物相关的优点包括用于给定反应器负载的沸石的量的显着减少和对所需烷基化芳族产物的改进的选择性。 当层状组合物形成为具有足够高的空隙体积的形状以减少跨越烷基化催化剂床的压降时,可实现进一步的益处。 这对于涉及高回收率和因此反应区中低烷基化剂浓度的操作特别有用。 已知这种条件促进副产物形成。

    Process for preparing attrition resistant zeolitic layered catalyst composition
    2.
    发明授权
    Process for preparing attrition resistant zeolitic layered catalyst composition 有权
    制备耐磨沸石层状催化剂组合物的方法

    公开(公告)号:US06710003B2

    公开(公告)日:2004-03-23

    申请号:US10022024

    申请日:2001-12-13

    IPC分类号: B01J2904

    摘要: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone. Such conditions are known to promote reduced byproduct formation.

    摘要翻译: 公开了一种分层催化剂组合物,其中通过将包含结合的沸石(例如β沸石)的外层粘合到内芯材料(例如堇青石)来制备组合物。 在催化剂制备方法中使用有机粘合剂提供了足够耐机械磨损的组合物,其可以在芳族烷基化方法(例如苯烷基化至乙苯)中商业使用。 与使用分层组合物相关的优点包括用于给定反应器负载的沸石的量的显着减少和对所需烷基化芳族产物的改进的选择性。 当层状组合物形成为具有足够高的空隙体积的形状以减少跨越烷基化催化剂床的压降时,可实现进一步的益处。 这对于涉及高回收率和因此反应区中低烷基化剂浓度的操作特别有用。 已知这种条件促进副产物形成。

    Alkylation process using UZM-8 zeolite
    6.
    发明授权
    Alkylation process using UZM-8 zeolite 失效
    使用UZM-8沸石的烷基化方法

    公开(公告)号:US07268267B2

    公开(公告)日:2007-09-11

    申请号:US11170420

    申请日:2005-06-29

    IPC分类号: C07C2/66

    摘要: A process for the alkylation of aromatics with olefins using a solid catalyst bed containing UZM-8 zeolite is disclosed. A polyalkylated aromatic is passed to the catalyst bed to reduce the concentration of the olefin at alkylation conditions. A portion of the effluent recovered from the catalyst bed may be recycled to the catalyst bed. Such operation can decrease the catalyst deactivation rate and the formation of diphenylalkanes. The process disclosed herein is applicable to processes for the production of a wide variety of commercially important alkylated aromatics, including ethylbenzene and cumene.

    摘要翻译: 公开了使用含有UZM-8沸石的固体催化剂床用烯烃烷基化芳族化合物的方法。 将多烷基化芳族化合物通入催化剂床,以在烷基化条件下降低烯烃的浓度。 从催化剂床回收的一部分流出物可以再循环到催化剂床。 这种操作可以降低催化剂失活速率和二苯基烷烃的形成。 本文公开的方法适用于生产各种商业上重要的烷基化芳族化合物(包括乙苯和枯烯)的方法。