期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 220, 期 -, 页码 215-219出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2015.08.038
关键词
ZIF-8 membrane; Magnetron deposition; ZnO conversion; Hydrogen; Propane
类别
资金
- King Abdullah University of Science and Technology (KAUST)
ZIF-8 composite membranes were synthesized at room temperature from aqueous solution by a double-zinc-source method on polyacrylonitrile (PAN) porous supports. The support was coated with zinc oxide (ZnO) by magnetron sputtering prior to ZIF-8 growth to improve the nucleation as well as the adhesion between the ZIF-8 layer and support. By this method, we were able to grow a continuous, dense, very thin (900 nm) and defect free ZIF-8 layer on a polymeric support. The developed ZIF-8 membranes had a gas permeance of 1.23 x 10(-7) mol m(-2) sec(-1) Pa-1 for hydrogen and a selectivity of 26 for hydrogen/propane gases which is 5 times higher than the Knudsen selectivity. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis were done to characterize the membranes. (C) 2015 Elsevier Inc. All rights reserved.
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