where Ji is the partial flux of the compound, Jio is the pre-exponential
factor of the flux, R is the gas constant (J mol1 K1), T is the
temperature (K) and Ea is the apparent activation energy (KJ mol1).
Permeance was estimated according to Eq. (9), based on the
molar flux of each component – ji (obtained from Eqs. (7) and
(8)), and the selectivity of the membrane was calculated from
the ratio between permeances (Eq. (10)).