Method of treating toxic aromatic halogen-containing compounds by
electrophilic aromatic substitution
    1.
    发明授权
    Method of treating toxic aromatic halogen-containing compounds by electrophilic aromatic substitution 失效
    通过亲电芳香取代处理有毒芳香族含卤素化合物的方法

    公开(公告)号:US5290432A

    公开(公告)日:1994-03-01

    申请号:US736474

    申请日:1991-07-26

    Abstract: An improved method for detoxifying waste materials contaminated with halogenated aromatic hydrocarbons is disclosed. The method provides for detoxification of halogenated aromatic compounds by electrophilic aromatic substitution. The method also provides for the dehalogenation of the lower congeners of such halogenated aromatic compounds, as a result of chemical activation via electrophilic aromatic substitution, followed by nucleophilic aromatic dehalogenation. In addition, the method provides for the more complete dehalogenation of mixtures of halogenated aromatic compounds that contain both higher and lower congeners by increasing the efficiency of dehalogenation of the lower congeners.

    Abstract translation: 公开了一种用于对被卤代芳烃污染的废物进行解毒的改进方法。 该方法通过亲电芳香取代提供卤代芳族化合物的解毒。 该方法还提供这种卤代芳族化合物的较低同系物的脱卤作用,这是由于通过亲电芳族取代的化学活化,随后是亲核芳族脱卤。 此外,该方法通过提高下同系物的脱卤效率来提供含有较高和较低同系物的卤代芳族化合物混合物的更完全的脱卤。

    Process for dehalogenation of contaminated waste materials
    5.
    发明授权
    Process for dehalogenation of contaminated waste materials 失效
    污染废物脱卤的方法

    公开(公告)号:US5093011A

    公开(公告)日:1992-03-03

    申请号:US626068

    申请日:1990-12-12

    CPC classification number: A62D3/34 A62D2101/22 A62D2101/28 Y10S210/909

    Abstract: An improved method for detoxifying waste materials contaminated with halogenated hydrocarbons is disclosed. The method achieves dehalogenation of such halogenated hydrocarbons in a manner as efficient as previous methods, but at a considerably lower cost. The economic advantages of the present invention arise from the use of lower temperatures and/or smaller quantities of reagents, which in turn is made possible by the discovery of a surprisingly superior reagent, 2-methoxyethanol, and superior catalysts, the crown ethers, which allow reagents other than 2-methoxyethanol to function very efficiently in dehalogenation reactions.

    Abstract translation: 公开了一种用于对被卤代烃污染的废物进行解毒的改进方法。 该方法以与先前方法一样有效的方式实现了这种卤代烃的脱卤,但成本相当低。 本发明的经济优点来自于使用较低温度和/或更少量的试剂,这又可以通过发现令人惊奇的优异试剂2-甲氧基乙醇和优异的催化剂冠醚来实现,其中 允许除2-甲氧基乙醇之外的试剂在脱卤反应中非常有效地起作用。

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