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    Process for separation of indole using X and Y type zeolites
    2.
    发明授权
    Process for separation of indole using X and Y type zeolites 失效
    使用X和Y型沸石分离吲哚的方法

    公开(公告)号：US4357276A

    公开(公告)日：1982-11-02

    申请号：US197459

    申请日：1980-10-16

    申请人： Kenji Takasa ,  Keizo Hirakawa ,  Hiroji Nishimaru ,  Makoto Honda

    发明人： Kenji Takasa ,  Keizo Hirakawa ,  Hiroji Nishimaru ,  Makoto Honda

    IPC分类号： C07D209/06 ,  C07D209/08

    CPC分类号： C07D209/08 ,  C07D209/06

    摘要： A process for separating indole from a mixture of indole with at least one hydrocarbon or its derivative which comprises the steps of contacting the mixture with a faujasite structured zeolite to selectively adsorb indole on the zeolite and contacting a desorbent A selected from the group consisting of C.sub.2-10 aliphatic or C.sub.7-10 aromatic ether compounds, C.sub.2-10 aliphatic ester compounds and C.sub.3-10 aliphatic ketone compounds with the indole-adsorbed zeolite to separate indole and the process which comprises, in addition, the step of contacting at least one desorbent B of the formula, ##STR1## wherein R.sup.1 is a C.sub.1-3 alkyl group, andR.sup.2 is a hydrogen atom or a C.sub.1-3 alkyl group,with the indole-adsorbed zeolite prior to the contact of the desorbent A with the indole-adsorbed zeolite.

    摘要翻译： 一种将吲哚与至少一种烃或其衍生物的混合物分离吲哚的方法，其包括以下步骤：使混合物与八面沸石结构沸石接触，以选择性地将吲哚吸附在沸石上并接触选自C2组分的解吸剂A -10个脂族或C 7-10芳族醚化合物，C 2-10脂族酯化合物和具有吲哚吸附沸石的C 3-10脂族酮化合物以分离吲哚，并且该方法还包括使至少一种解吸剂 B，其中R 1是C 1-3烷基，R 2是氢原子或C 1-3烷基，在解吸剂A与吲哚 - 吸附沸石。

    Process for extracting indoles
    5.
    发明授权
    Process for extracting indoles 失效
    萃取过程

    公开(公告)号：US5229001A

    公开(公告)日：1993-07-20

    申请号：US689454

    申请日：1991-04-22

    申请人： Shin Tanaka ,  Akinori Matsuura ,  Shintaro Furusaki

    发明人： Shin Tanaka ,  Akinori Matsuura ,  Shintaro Furusaki

    IPC分类号： C07D209/06

    CPC分类号： C07D209/06

    摘要： The invention provides a process for the extraction of indoles which comprises the steps of firstly extracting indoles from an indoles containing mixture with formamide or a formamide-containing solution and subsequently contacting the extract with at least one organic solvent selected from the group consisting of ethers, aromatic hydrocarbons and halogenated hydrocarbons to recover indoles with the organic solvent. This process is applicable to an industrial scale extraction of indoles, because the extraction solvent system has a high extraction selectivity of indoles, is required in a small amount with almost no losses through the extraction and recovery steps and can be used repeatedly.