Mixed matrix membranes using SAPO-34/polyetherimide for carbon dioxide/methane separation

摘要: Abstract Mixed matrix membranes (MMMs) are hybrid materials prepared by dispersing inorganic particles in a polymeric and attracting increasing attention for the separation of CO2/CH4 mixtures. The zeolite SAPO-34 polyetherimide were selected as filler synthesis supported MMMs. Two polymer solvents, dichloroethane (DCE) N-methyl-2-pyrrolidone (NMP), investigated preparation, DCE solvent resulted membrane with better selectivity. Various amounts from 0 to 10 wt% dispersed precursor which was dissolved DCE. 5 wt% content presented highest performance CO2 permeance 4 × 10−10 mol m−2 s−1 Pa−1 ideal selectivity 60. Based on mixed gas permeances time-lag measurements, CH4 found be dominated difference solubilities. decreased transport its diffusion pathway. Particle agglomeration observed at 10 wt% loading matrix.