采用功能化无机粒子“二合一”修饰的方法,通过将3-氨丙基三乙氧基硅烷(APTES)功能化的α-Al2O3粒子负载在大孔的管状载体上制各了类沸石咪唑框架(ZIF-7)膜,考察了APTES的用量对ZIF-7膜制备的影响.结果表明,嫁接有APTES的α-Al2O3粒子负载在载体上,有效降低了载体表面孔尺寸并增加了载体表面异相成核的位点,促进了膜的生长,在APTES与α-Al2O3粒子的摩尔比为1∶3时,能够制得致密连续较薄的ZIF-7膜,膜厚度大约为2～3 μm,H2的渗透通量为4.70×10-7 mol/(m2·s·Pa),H2/CO2、H2/N2的理想分离因数分别为5.87、4.59,均大于努森扩散系数.
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