Skip to main content

Table 4 Hydrogen and methane permeation data for polyetherimide membrane made from NMP and GBL at 25 °C and different feed pressures

From: Preparation of polyetherimide membrane from non-toxic solvents for the separation of hydrogen from methane

Sample PEI wt% Feed pressure Permeance (GPU) Selectivity
H2 CH4
NMP-23 23 3 464.2 248.9 1.9
  5 493.3 280.8 1.8
  7 530.2 311.9 1.7
  10 580.0 355.6 1.6
NMP-27 27 3 43.7 14.5 3.0
  5 47.1 16.1 2.9
  7 48.7 17.3 2.8
  10 51.1 19.8 2.6
GBL-23 23 3 109.3 43.2 2.5
  5 129.3 56.9 2.3
  7 141.5 80.8 1.8
  10 153.5 94.3 1.6
GBL-27 27 3 1.1 0.3 3.3
  5 1.8 0.7 2.6
  7 1.9 0.8 2.4
  10 2.0 1.0 2.0