Measurement of Diffusion and Surface Exchange Coefficients

Equation (14.78) can be simplified to Eq. (14.79) if the ionic conductivity of the carbonate phase is dominant compared to that of the perovskite or MIEC phase (i.e., csc tEy) [50]  

The permeation performance of perovskite membranes is strongly conditioned by the bulk diffusion and surface exchange properties at the feed/ membrane and permeate/membrane surfaces. The knowledge of such properties is crucial to facilitate the design of membrane modules for CO2 capture applications. 

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