Mixed Matrix Membranes Comprising of ZIF-8 Nanofillers for Enhanced Gas Transport Properties

In the current research, mixed matrix membranes (MMMs) comprising of 5, 10, 15 and 20 wt% of zeolitic imidazolate framework-8 (ZIF-8) were incorporated into 6FDA-durene polyimide phase. The effect of ZIF-8 loading on the membrane performance of CO 2 and CH 4 separation was investigated. The excellent compatibility and good distribution of ZIF-8 nanofiller in 6FDA-durene polyimide phase even at higher ZIF-8 loading up to 20 wt% has resulted in the increment of CO 2 permeability and CO 2 /CH 4 selectivity compared to pure membrane. In this work, 6FDA-durene loaded with 10 wt% ZIF-8 demonstrated impressive CO 2 permeability of 1426.75 Barrer with CO 2 /CH 4 selectivity of 28.70, which successfully surpassed the Robeson 2008 upper bound.