Abstract
Facilitated transport membranes were used to fractionate binary mixtures of CO 2 and H 2S and to remove the acid gases from ternary mixtures with CH 4. The facilitated transport membranes were prepared by exchanging singly protonated ethylene diamine for Na + counterions in perfluorosulfonic acid membranes. Carbon dioxide was preferentially transported over H 2S for all mixture compositions studied. Separation factors for CO 2 over CH 4 of 503 to 1170 were observed which agree very well for those previously observed for binary mixtures. The presence of CO 2 decreased the CH 4 flux over the flux observed during pure gas measurements presumably due to differences in ionic strength of the membrane. The numerical solution of the steady-state transport equations was in good agreement with the experimental data.
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