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    • 22. 发明专利
    • Porous hollow fiber membrane having complex forming group and method for recovering germanium oxide by using the same
    • 具有复合成型组的多孔中空纤维膜及使用其回收氧化锗的方法
    • JP2007181816A
    • 2007-07-19
    • JP2006327003
    • 2006-12-04
    • Asai Germanium Research Inst株式会社浅井ゲルマニウム研究所
    • SAITO KYOICHISATO KATSUYUKIAKIBA MITSUO
    • B01J45/00B01J20/26B01J20/34B01J47/12B01J49/00C01G17/02C02F1/42D06M14/28D06M15/273
    • B01D2323/385
    • PROBLEM TO BE SOLVED: To provide a porous hollow fiber membrane by which germanium being a waste material can be recovered and to provide a method for recovering germanium oxide by using the porous hollow fiber membrane. SOLUTION: The porous hollow fiber membrane has a chelate forming group obtained by reacting a residual group of a compound, which is produced on the surface of a polyethylene-made porous hollow fiber membrane having no special group by radiation graft polymerization and contains an epoxy group, with another compound which is reacted with the residual group of the compound to produce another residual group having a structure shown by formula (1) (wherein R 1 and R 2 are each a hydrogen atom or a lower alkyl group) or a cis-1,2-diol structure. The method for recovering germanium oxide by using the porous hollow fiber membrane having a chelate formation group comprises the steps of: bringing the porous hollow fiber membrane into contact with an aqueous solution containing germanium oxide to collect germanium oxide; and eluting the collected germanium oxide by an acidic solution to recover germanium oxide. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供可以回收作为废料的锗的多孔中空纤维膜,并提供通过使用多孔中空纤维膜回收氧化锗的方法。 解决方案:多孔中空纤维膜具有螯合形成基团,其通过在聚乙烯制多孔中空纤维膜的表面上通过辐射接枝聚合制成残留的化合物组而获得,并且含有 与另一种与残留的化合物反应的化合物,生成具有式(1)所示结构的另外的残基(其中R 1 和R 2 < SB>各自为氢原子或低级烷基)或顺式-1,2-二醇结构。 通过使用具有螯合形成基团的多孔中空纤维膜回收氧化锗的方法包括以下步骤:使多孔中空纤维膜与含有氧化锗的水溶液接触以收集氧化锗; 并用酸性溶液洗脱所收集的氧化锗以回收氧化锗。 版权所有(C)2007,JPO&INPIT