ZIF-90膜的改性及在油气回收中的应用研究

发布时间：2018-03-22 11:24

  本文选题：ZIF-/AlO膜　切入点：改性　出处：《现代化工》2017年05期 　论文类型：期刊论文

【摘要】：利用NaBH_4将合成的ZIF-90晶种改性为ZIF-91,并用二次生长法在Al_2O_3支撑体上制备ZIF-90膜和ZIF-91膜。利用XRD、TGA、FT-IR,SEM、BET对合成的粉末及膜进行表征。以N2/n-C_5H_(12)模拟油气体系,将制备的ZIF-90/Al_2O_3膜和ZIF-91/Al_2O_3膜用于油气回收实验。考察了不同操作压力及温度下,2种膜在混合气中的分离性能,结果表明,当操作压力为0.06 MPa、温度为25℃时,ZIF-90膜和ZIF-91膜对N2/n-C_5H_(12)的分离因子分别为2.82、3.98,渗透性分别为5.02×10~(-8)、2.35×10~(-8)mol/m~2·s·Pa,说明改性在一定程度上提高了膜的分离性能。
[Abstract]:The synthesized ZIF-90 seeds were modified into ZIF-91 by NaBH_4, and ZIF-90 and ZIF-91 films were prepared on Al_2O_3 supports by secondary growth method. The synthesized powders and membranes were characterized by XRDX TGAFT-IRT-SEMBET. The oil and gas systems were simulated by N _ 2 / n-C _ 5H _ 2O _ 12). The ZIF-90/Al_2O_3 and ZIF-91/Al_2O_3 membranes were prepared for oil and gas recovery experiments. The separation properties of the two membranes in mixed gas at different operating pressures and temperatures were investigated. When the operating pressure was 0.06 MPA and the temperature was 25 鈩，

本文编号：1648433