Gas permeability of a novel cellulose membrane
- Journal of Membrane Science, 204(1-2), p.185-194, 2002 .
novel cellulose membrane was prepared by using amine oxides as the solvent and its mechanical performance was measured. Steady-state permeation rates of carbon dioxide, hydrogen, methane, nitrogen, oxygen, argon and helium in the homogeneous dense cellulose membrane were measured in the temperature range of 298-353K and under gas pressures up to 1MPa. The effect of swelling on hydrophilic membrane permeability was studied in some detail on the cellulose membrane. The difference in gas permeability between the "dry" cellulose membrane and the "water-swollen" cellulose membrane was investigated, and the gas permeability between the cellulose membrane and the Cellophane was compared. In this paper, the separation performance of CO2 over H2 in a "water-swollen" cellulose membrane is reported for the first time and the separation factor of CO2/H2 can be up to 15.