Fig. 3From: Preparation and Transport Performances of High-Density, Aligned Carbon Nanotube MembranesGas permeation performance of VACNT membranes. a The flow rates of gases passing through the CNT membrane are scaled linearly with the pressure drop. b Histogram of the observed permeance and enhancement factors over Knudsen diffusion for each gas. c Selectivity of H2 relative to other gases of the CNT membranesBack to article page