The hindering effect of adsorbed components on the permeation of a non-adsorbing component through a microporous silicalite membrane: the potential barrier theory

Effects of water vapor on gas permeation and separation properties of MFI zeolite membranes at high temperatures

“…15,27 The suppression effect of an adsorbing component on the permeation of a nonadsorbing component is well known for zeolite membranes. 28,29 However, the results obtained in this study show for the first time appreciable adsorption of water vapor on silicaltie and ZMS-5 zeolites at high temperatures in 300-500 C, and the suppression effect of water vapor on the gas permeation through silicalite and ZSM-5 zeolite membranes in this temperature range. It is found that water vapor exhibits negligible effects on gas permeance through silicalite membranes at even higher temperature ([550 C).…”

Modeling transient permeation of polar organic mixtures through a MFI zeolite membrane using the Maxwell–Stefan equations

“…(1) is successful in modeling mixture permeation. In particular we aim to show that the mutual influence of the species in the mixture can be much stronger than hitherto appreciated in the literature [35]. Furthermore we aim to show that for methanol/acetone mixtures the assumption that the Ð i in Eq.…”

New expressions for single and binary permeation through zeolite membranes for different isotherm models

“…Although stronger adsorbates move slower than the weaker ones, their presence within small pores may create a barrier to the diffusion of the second ones, and hence hinder their transport across the membrane. As a result, an unexpected maximum may appear in the uptake profiles of the faster diffusing component [37][38][39].…”