Figure 4: Transformation of CuBTC membrane and their performance.
From: Transformation of metal-organic frameworks for molecular sieving membranes
(a–c) SEM images of original CuBTC membrane, transformed CuBTC/MIL-100 membrane and transformed CuBTC/MIL-100 membrane after purification, respectively. Scale bar, 20 μm. (d,e) Gas permeance and selectivities of the CuBTC and CuBTC/MIL-100 membranes. All the average permeation results with standard deviation were calculated from three measurement data. (f) Effect of temperature on H2 permeance and H2/CO2 and H2/N2 selectivities for CuBTC/MIL-100 membrane. (g) Comparison of CuBTC/MIL-100 membrane with polymeric8,47, silica1, zeolite3, other MOF46,48,49 and graphene oxide membranes5 for H2/N2 system. 1 barrer=3.348 × 10−16 mol m−2 s−1 Pa−1, the red dotted line is the Robeson’s upper-bound reported in 2008 (ref. 8).
