• carbon–al2o3–ag composite molecular sieve membranes for gas separation

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     phenolic resins loaded with two different inorganic fillers (boehmite (γ-alo(oh)) and silver (ag)) were used to prepare composite carbon membranes. polymer solutions containing γ-alo(oh) and agno3 were prepared and the effect of ag on the transport properties of the composite membrane was evaluated. the polymer solutions were coated on α-al2o3 tubes and carbonized in a single dipping-drying-pyrolysis step. after pyrolysis at 550 °c, γ-alo(oh) yielded γ-al2o3, and ag agglomerated forming spherical nanoparticles of 30 nm in diameter. ag loading enhanced the carbon membrane performance for several gas pairs of interest, especially for c3h6/c3h8 separation, where the c3h6/c3h8 permselectivity increased from a maximum of 15 to 38.

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