(673f) Adsorption-Enhanced, Plasticization Resistant Composite Membranes Using Metal–Organic Framework Nanocrystals
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Separations Division
Mixed-Matrix Materials for Gas Separation
Thursday, November 1, 2018 - 2:15pm to 2:36pm
We then expanded on this work by addressing another important gas separation that is limited by plasticization - natural gas purification - by again applying the crosslinking effects of the metalâorganic framework nanocrystals. In this case, nanocrystals of the metalâorganic framework Ni2(dobdc) were incorporated into six different polyimides that can be used for this gas separation. This resulted in significantly improved plasticization response in the majority of materials, as measured by CO2 permeation hysteresis and binary gas permeation measurements. Notably, high selectivity is retained under pressures of CO2 in excess of 20 bar. These pressures represent some of the most aggressive feed environments that might be encountered in the field. Together, these works introduce a novel handle to improve permselectivity in addition to a new crosslinking mechanism to improve membrane stability.