Fabrication of MIL-120 membranes supported by a-Al2O3 hollow ceramic fibers for H2 separation

Abstract

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 H₂–CO₂, H₂–CH₄ and H₂–N₂ are 9.4, 7.9, and 7.3 respectively at 293 K and 1 bar with H₂ permeance of 3.5 × 10⁻⁷ mol m⁻² s⁻¹ Pa⁻¹ as well as high thermal stability.