Fabrication of MIL-120 membranes supported by a-Al2O3 hollow ceramic fibers for H-2 separation

摘要

The synthesis conditions of MIL-120 membranes supported by a-Al2O3 hollow ceramic fibers (HCFs) were studied systemically. The continuous and compact MIL-120 membranes were successfully synthesised by secondary growth with in situ seeding step. The MIL-120 membrane shows the separation factors of H-2-CO2, H-2-CH4 and H-2-N-2 are 9.4, 7.9, and 7.3 respectively at 293 K and 1 bar with H-2 permeance of 3.5 x 10(-7) mol m(-2) s(-1) Pa-1 as well as high thermal stability.