Fig. 5 Gas separation performance of MMCMs. Effect of MOF
loading on CO2 permeance and
CO2/CH4 selectivity (feed gas:
CO2/CH4 = 3/7 vol% mixed gas, 1 bar) of
(a) MMCM-A, (b)MMCM-B. Effect of CO2 partial pressure on
separation performance of pristine polyimide, MMCM-A and MMCM-B
(equimolar mixed gas, 30°C): (c) CO2 permeance, (d)
CO2/CH4 selectivity. Long-term stability
of pristine polyimide, MMCM-A and MMCM-B
(feed gas:
CO2/CH4 = 3/7 vol% mixed gas, 1 bar,
30°C): (e) CO2 permeance, (f)
CO2/CH4 selectivity.