Study of gas relative permeability in a mesoporous alumina pellet

Abstract

The helium relative permeability of an alumina mesoporous pellet partially blocked by sorbed CCl₄ has been studied on both sorption and desorption branches of the sorption isotherm. The plot of relative permeability (P_R) against the amount of CCl₄ sorbed (v_s) is concave upwards; this is in contrast to the initially convex upwards curve reported previously for microporous Carbolac carbon containing paraffin sorbates, but in agreement with some preliminary computations based on a capillary-network model. Differences between the P_R against v_s plots for the sorption and desorption branches of the isotherm are not significant in relation to the repeatability of the results.