Cross-linked polybenzimidazole membrane for gas separation
    1.
    发明授权
    Cross-linked polybenzimidazole membrane for gas separation 失效
    用于气体分离的交联聚苯并咪唑膜

    公开(公告)号:US06946015B2

    公开(公告)日:2005-09-20

    申请号:US10607589

    申请日:2003-06-26

    IPC分类号: B01D53/22 B01D71/62 B01D71/58

    摘要: A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by layering a solution of polybenzimidazole (PBI) and α,α′dibromo-p-xylene onto a porous support and evaporating solvent. A supported membrane of cross-linked poly-2,2′-(m-phenylene)-5,5′-bibenzimidazole unexpectedly exhibits an enhanced gas permeability compared to the non-cross linked analog at temperatures over 265° C.

    摘要翻译: 用于气体分离的交联的负载型聚苯并咪唑膜通过将聚苯并咪唑(PBI)和α,α'-二溴对二甲苯的溶液层压到多孔载体上并蒸发溶剂来制备。 交联的聚-2,2' - (间亚苯基)-5,5'-联苯并咪唑的支撑膜在265℃以上的温度下与非交联的类似物相比显着提高了气体渗透性。

    Cross-linked polybenzimidazole membrane for gas separation
    2.
    发明授权
    Cross-linked polybenzimidazole membrane for gas separation 失效
    用于气体分离的交联聚苯并咪唑膜

    公开(公告)号:US06997971B1

    公开(公告)日:2006-02-14

    申请号:US10901401

    申请日:2004-07-28

    IPC分类号: B01D53/22 B01D71/58

    摘要: A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by reacting polybenzimidazole (PBI) with the sulfone-containing crosslinking agent 3,4-dichloro-tetrahydro-thiophene-1,1-dioxide. The cross-linked reaction product exhibits enhanced gas permeability to hydrogen, carbon dioxide, nitrogen, and methane as compared to the unmodified analog, without significant loss of selectivity, at temperatures from about 20 degrees Celsius to about 400 degrees Celsius.

    摘要翻译: 通过使聚苯并咪唑(PBI)与含砜砜交联剂3,4-二氯 - 四氢 - 噻吩-1,1-二氧化物反应来制备用于气体分离的交联的负载型聚苯并咪唑膜。 与未改性的类似物相比,在约20摄氏度至约400摄氏度的温度下,交联反应产物对氢气,二氧化碳,氮气和甲烷的气体渗透性增强,而没有显着的选择性损失。