Crosslinked polyvinylalcohol-polysiloxane/fumed silica mixed matrix membranes containing amines for CO2/H2 separation

▶ Crosslinked PVA-POS/FS mixed matrix membranes containing amines were synthesized. ▶ CO2 permeability of 1296 Barrers and CO2/H2 selectivity of 87 obtained at 220 psia. ▶ The CO2 permeability and CO2/H2 selectivity reduced as the feed pressure increased. ▶ The CO2 permeability and CO2/H2 selectivity increased significantly as RH increased. ▶ The FS loading showed a significant effect on separation performance.