Solvothermal Synthesis and Characterization of Cu3(BTC)2Tubular Membranes Using Surface Modified Supports

− In this study, nanoporous Cu 3 (BTC) 2 membranes were synthesized on macroporous alumina tube supports by solvothermal method. It is very difficult to prepare uniform and crack-free Cu 3 (BTC) 2 layer on macroporous alumina support by in situ solvothermal method. In this study, continuous and crack-free Cu 3 (BTC) 2 tubular membranes could be obtained by in situ solvothermal process after surface modification of alumina support. The surface modification was conducted by spraying Cu precursor solution on the alumina support heated at 200 C. The prepared Cu 3 (BTC) 2 tubular membranes were characterized by XRD, FE-SEM and gas permeation experiments. H 2 permeance through 5 μm thick Cu 3 (BTC) 2 tubular membrane was calculated to be 7.8×10 mol/s·m·Pa by single gas permeation test, with the ideal selectivities of H 2 /N 2 =11.94, and H 2 /CO 2 =12.82.