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. Author manuscript; available in PMC: 2019 Oct 7.
Published in final edited form as: Phys Chem Chem Phys. 2018 Sep 13;20(37):23967–23975. doi: 10.1039/c8cp04889d

Figure 1.

Figure 1.

13C PFG NMR attenuation curves for ethane diffusion in ZIF-7–8 (hollow red symbols) and ZIF-8 (hollow black symbols) at four different ethane loading pressures and at different diffusion times shown in the figure legends. Also shown for comparison is the initial part of the corresponding 1H PFG NMR attenuation curve for ZIF-7–8 at the loading pressure of 2.7 bar (filled red triangles in the upper right figure). The solid black lines represent a monoexponential fit of the ZIF-8 data using Eq. 1, while the dashed red line is the monoexponential fit using Eq. 1 of the initial 30% of the signal attenuation in ZIF-7–8. Crossed symbols for the loading pressure of 2.7 bar correspond to the measurements at 17.6 T. Symbols without crosses correspond to the measurements at 14 T.