A SAPO-34 membrane, prepared by seeding SAPO crystals, has a CO2/CH4 separation selectively of 115 and a CO2 permeance of 4.0 × 10-7 mol m–2 s–1 Pa–1. SAPO-34 membranes separate CO2/CH4 mixtures at a feed pressure of 7 MPa.
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Li et al. (2006) studied this question.
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