Fig. 3: Gas permeation performance.
From: Metallocene-anchor inducing oriented MOF membrane for helium separation
a Pure-gas permeance of Zr-MOF membranes as a function of molecular kinetic diameter. (x% represents the Cp2ZrCl2 concentration in precursor solution). b The ideal selectivities of Zr-MOF membranes. c The transition energy barrier of He and CH4 through the oriented Zr-MOF membrane, the inserted graph is energy profiles at different transmission locations. d Illustration of the MD simulation. e The diffusivities of He and CH4 through {001}-oriented Zr-MOF membrane. Pressure-dependence (f) and temperature-dependence (g) of mixed-gas (He/CH4) for oriented Zr-MOF membrane. h Long-term test of the {001}-oriented Zr-MOF membrane.
