Fig. 1: The Diffusion-rate sieving mechanism using a cooperatively dynamic PCP to separate C3H6 and C3H8.
From: Diffusion-rate sieving of propylene and propane mixtures in a cooperatively dynamic porous crystal
a Schematic representations of the C3H6/C3H8 adsorption isobars for the thermodynamic separation using rigid PCPs with open-metal sites. b Schematic representations of the C3H6/C3H8 adsorption isobars for the thermodynamic separation using globally dynamic PCPs. c Schematic representations of the C3H6/C3H8 adsorption isobars for the size-exclusive sieving using pore-aperture controlled PCPs. d Schematic representations of the C3H6/C3H8 adsorption isobars for the diffusion-rate sieving using a cooperatively dynamic PCP (this work); this mechanism involves a pore system featuring both gate-opening and diffusion-regulatory functionalities that can individually control the adsorption processes of different gases, thereby yielding substantial differences in both adsorption capacity and kinetics.
