Modified montmorillonite clay catalyst
    2.
    发明授权
    Modified montmorillonite clay catalyst 失效
    改性蒙脱石粘土催化剂

    公开(公告)号:US4235751A

    公开(公告)日:1980-11-25

    申请号:US34604

    申请日:1979-04-30

    摘要: A modified montmorillonite clay is prepared by heating it, impregnating it with an organic liquid, acid-activating it with a strong acid, and then washing it with water until it is substantially free of acid anions. The modified clay is useful as a catalyst, particularly for the preparation of tetrahydrofuran/alkylene oxide copolymers.

    摘要翻译: 通过加热改性蒙脱石粘土,用有机液体浸渍,用强酸酸化,然后用水洗涤直至基本上不含酸性阴离子。 改性粘土可用作催化剂,特别是用于制备四氢呋喃/烯化氧共聚物。

    Process for refining tetrahydrofuran
    4.
    发明授权
    Process for refining tetrahydrofuran 失效
    四氢呋喃精制方法

    公开(公告)号:US4461676A

    公开(公告)日:1984-07-24

    申请号:US394119

    申请日:1982-07-01

    IPC分类号: C07D307/08 B01D3/34

    CPC分类号: C07D307/08

    摘要: The level of aldehyde and ketone impurities in tetrahydrofuran can be significantly reduced by bringing the tetrahydrofuran into contact with sodium borohydride and then separating the modified impurities and the tetrahydrofuran.

    摘要翻译: 通过使四氢呋喃与硼氢化钠接触,然后分离改性杂质和四氢呋喃,可以显着降低四氢呋喃中醛和酮杂质的含量。

    Process for preparing a tetrahydrofuran-alkylene oxide copolymer with
treated bentonite catalyst
    5.
    发明授权
    Process for preparing a tetrahydrofuran-alkylene oxide copolymer with treated bentonite catalyst 失效
    用经处理的膨润土催化剂制备四氢呋喃 - 烯化氧共聚物的方法

    公开(公告)号:US4329445A

    公开(公告)日:1982-05-11

    申请号:US154844

    申请日:1980-05-30

    IPC分类号: B01J21/16 C08G65/20 C08G65/26

    摘要: A modified montmorillonite clay is prepared by heating it, impregnating it with an organic liquid, acid-activating it with a strong acid, and then washing it with water until it is substantially free of acid anions. The modified clay is useful as a catalyst, particularly for the preparation of tetrahydrofuran/alkylene oxide copolymers.

    摘要翻译: 通过加热改性蒙脱石粘土,用有机液体浸渍,用强酸酸化,然后用水洗涤直至基本上不含酸性阴离子。 改性粘土可用作催化剂,特别是用于制备四氢呋喃/烯化氧共聚物。