膜
扫描电子显微镜
化学工程
气体分离
选择性
聚合物
基质(化学分析)
热稳定性
材料科学
金属有机骨架
化学
复合材料
有机化学
吸附
工程类
催化作用
生物化学
作者
Edson V. Perez,Kenneth J. Balkus,John P. Ferraris,Inga H. Musselman
标识
DOI:10.1016/j.memsci.2008.12.006
摘要
Metal–organic framework 5 (MOF-5) nanocrystals with a high surface area (3000 m2/g) and high thermal stability (up to 400 °C) were synthesized and added to Matrimid® to form mixed-matrix membranes for gas separations. Scanning electron microscopy (SEM) images of the membrane cross-sections revealed significant plastic deformation of the polymer matrix owing to the strong affinity between the MOF-5 and Matrimid®. At 30% MOF-5 loading, the permeabilities of the gases tested increased 120% while the ideal selectivities remained constant compared to Matrimid®. Residual gas analysis of permeates of gas blends with different mixture ratios revealed an increase in selectivity for CH4.
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