Huan Liu , Huanni Xia , Rui Yao , Jianqiao Hu , Lifeng Zhang , Hua Jin , Yanshuo Li
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引用次数: 0
摘要
该研究首次对 MOF 玻璃膜的气体吸附和传输行为进行了深入研究。研究评估了 TIF-4 和 ZIF-62 玻璃膜在 298 K 和 313 K 之间的气体渗透性、吸附系数和扩散系数的温度依赖性。二氧化碳的渗透性由吸附过程主导，而 CH4 的传输则主要由活化扩散驱动。此外，MOF 玻璃膜在吸附过程中表现出显著的熵选择性，而在扩散过程中则表现出明显的焓选择性。
Gas transport mechanisms through MOF glass membranes
The study provides an in-depth study on the gas adsorption and transport behaviors of MOF glass membranes for the first time. Temperature dependance of gas permeability, adsorption coefficients and diffusion coefficients between 298 K and 313 K for TIF-4 and ZIF-62 glass membrane were evaluated. The CO2 permeability was dominated by the adsorption process, while CH4 transport was mainly driven by the activated diffusion. Further, the MOF glass membranes exhibited significant entropic selectivity in adsorption, along with notable enthalpic selectivity in diffusion.
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