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    • 1. 发明授权
    • Method for the preparation of high surface area high permeability carbons
    • 高表面积高渗透性碳的制备方法
    • US5902562A
    • 1999-05-11
    • US960112
    • 1997-10-27
    • Robert R. LagasseJohn L. Schroeder
    • Robert R. LagasseJohn L. Schroeder
    • D01F9/21D01F9/12
    • D01F9/21
    • A method for preparing carbon materials having high surface area and high macropore volume to provide high permeability. These carbon materials are prepared by dissolving a carbonizable polymer precursor, in a solvent. The solution is cooled to form a gel. The solvent is extracted from the gel by employing a non-solvent for the polymer. The non-solvent is removed by critical point drying in CO.sub.2 at an elevated pressure and temperature or evaporation in a vacuum oven. The dried product is heated in an inert atmosphere in a first heating step to a first temperature and maintained there for a time sufficient to substantially cross-link the polymer material. The cross-linked polymer material is then carbonized in an inert atmosphere.
    • 一种制备具有高表面积和高大孔体积的碳材料以提供高渗透性的方法。 这些碳材料通过将可碳化聚合物前体溶解在溶剂中来制备。 将溶液冷却以形成凝胶。 通过使用聚合物的非溶剂从凝胶中提取溶剂。 通过在升高的压力和温度下在CO 2中的临界点干燥或在真空烘箱中蒸发除去非溶剂。 将干燥的产物在惰性气氛中在第一加热步骤中加热至第一温度,并将其保持足以使聚合物材料基本上交联的时间。 然后将交联的聚合物材料在惰性气氛中碳化。