渗透
膜
丙烷
碳氢化合物
化学
沸石咪唑盐骨架
吸附
热扩散率
扩散
化学工程
碳氢化合物混合物
色谱法
热力学
分析化学(期刊)
有机化学
金属有机骨架
生物化学
工程类
物理
作者
Yichang Pan,Wei Liu,Yingjie Zhao,Chongqing Wang,Zhiping Lai
标识
DOI:10.1016/j.memsci.2015.06.019
摘要
Zeolitic imidazolate framework ZIF-8 has shown great potential for effective separation of hydrocarbon mixtures based on its intrinsic ultramicroporous feature. In order to explore the permeation and diffusion properties of hydrocarbons through ZIF-8 membrane, high-quality ZIF-8 membranes with a separation factor of ~90 for propylene/propane are successfully prepared via optimizing the activation processes. Single-component permeation data for hydrocarbons (C1–C4) through the improved ZIF-8 membrane are measured and analyzed by Maxwell–Stefan (MS) model to get the transport diffusivities of these hydrocarbons. The diffusivity values of hydrocarbon compare well with those obtained by other experimental techniques. Binary mixture permeation also can be well predicted through single-component adsorption parameters.
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