Polymers are popular materials in gas separation membranes due to their high processability, mechanical strength and good selectivity. On the other hand, the metal-organic frameworks (MOFs) are also used in such membranes owing to their high porosity, which in turn leading to high gas permeability. In most of the current membrane studies, the MOFs merely serve as additives to polymer, i.e. the MOF particle is blended into polymer membrane to yield the mixed-matrix membrane (MMM). Therefore, the potential of MOF in gas separation applications are not fully developed. In addition, the effects of MOF morphology are not fully investigated yet. This presentation reports on several novel configurations of MOF/polymer composite structure and their applications in gas separations via membrane technology.[1,2] The presentation is organized by the manipulation of MOF crystal morphologies, and the efficient use of different MOF topologies are demonstrated too. This study results in several novel membrane materials with excellent CO2/N2 separation performance.

Polymer/MOF composite structure for gas separation membranes: Dimensional design

2019 Fall National Meeting

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