Production of hydrogen for use in coal liquefaction
    23.
    发明授权
    Production of hydrogen for use in coal liquefaction 失效
    生产用于煤矿液化的氢气

    公开(公告)号:US3925188A

    公开(公告)日:1975-12-09

    申请号:US43415374

    申请日:1974-01-17

    Inventor: LESTER GEORGE R

    CPC classification number: C10G1/002

    Abstract: A method for producing the hydrogen required in liquefying coal to provide aromatic products such as benzene and naphthalene. The method includes the steps of contacting hydrogen produced in the process with coal in a liquefaction zone and refining the hydrocarbon liquefaction product, which includes polycyclic aromatics, polycyclic hydroaromatics and alkylaromatics, by contacting the liquefaction product with steam and a steam dealkylation catalyst in order to react the hydrocarbons and steam to provide hydrogen and the aromatic products. The aromatic products are recovered from the resulting liquids and the hydrogen thus produced is passed to the coal liquefaction step.

    Preparation of dibenzodioxins
    24.
    发明授权
    Preparation of dibenzodioxins 失效
    二苯并二氧杂环己烷的制备

    公开(公告)号:US3679704A

    公开(公告)日:1972-07-25

    申请号:US3679704D

    申请日:1969-08-07

    CPC classification number: C07D319/24

    Abstract: Dibenzodioxins are prepared by reacting phenol with a palladium halide in the presence of a catalyst comprising a copper halide, said reaction being effected in a sodium acetate-acetic acid medium at refluxing conditions.

    Abstract translation: 二苯并二恶英通过在含有卤化铜的催化剂存在下使苯酚与卤化钯反应来制备,所述反应在回流条件下在乙酸钠 - 乙酸介质中进行。

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