Preparation of supported carbon membranes from furfuryl alcohol by vapor deposition polymerization

摘要

Supported carbon membranes were prepared from furfuryl alcohol (FA) precursor by vapor deposition polymerization (VDP). For this purpose γ-Al_2O_3/α-Al_2O_3 or glass/α-Al_2O_3 support tubes were pretreated with an acid catalyst and exposed to FA vapors at 90 deg C. The tubes were then heated at 200 deg C to crosslink the poly(furfuryl alcohol) (PFFA) polymer and carbonized slowly to 600 deg C. The polymerization and carbonization cycle was repeated once to improve the permeation properties.