Method for removing impurities from porous materials

    公开(公告)号:US20060137718A1

    公开(公告)日:2006-06-29

    申请号:US11023437

    申请日:2004-12-29

    CPC classification number: B08B7/0021 B82Y30/00 F26B21/14

    Abstract: The present invention discloses a method for removing impurities from a porous material by flowing a supercritical fluid with or without a modifier therein over a to-be-cleaned porous material having pores at the nanometer level under suitable temperatures and pressures, so that the supercritical fluid migrates into the pores at the nanometer level and removes impurities entrapped therein. The method of the present invention uses the physical and chemical properties of the supercritical fluid and optionally the modifier to clean the porous material without using an acid or alkaline solvent. The method of the present invention conserves water, and is both a highly efficient and environmentally friendly cleaning technique.

    Method for removing impurities from porous materials
    2.
    发明授权
    Method for removing impurities from porous materials 有权
    从多孔材料中去除杂质的方法

    公开(公告)号:US07124764B2

    公开(公告)日:2006-10-24

    申请号:US11023437

    申请日:2004-12-29

    CPC classification number: B08B7/0021 B82Y30/00 F26B21/14

    Abstract: The present invention discloses a method for removing impurities from a porous material by flowing a supercritical fluid with or without a modifier therein over a to-be-cleaned porous material having pores at the nanometer level under suitable temperatures and pressures, so that the supercritical fluid migrates into the pores at the nanometer level and removes impurities entrapped therein. The method of the present invention uses the physical and chemical properties of the supercritical fluid and optionally the modifier to clean the porous material without using an acid or alkaline solvent. The method of the present invention conserves water, and is both a highly efficient and environmentally friendly cleaning technique.

    Abstract translation: 本发明公开了一种通过使具有或不具有改性剂的超临界流体在适当的温度和压力下在具有纳米级的孔的待清洁的多孔材料中流过多孔材料来除去杂质的方法,使得超临界流体 迁移到纳米级的孔中,去除夹在其中的杂质。 本发明的方法使用超临界流体和任选的改性剂的物理和化学性质来清洁多孔材料而不使用酸或碱溶剂。 本发明的方法节约了水,同时也是高效和环保的清洗技术。

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