The diffusion of liquids in pores

Abstract

An equation for the diffusion of solute molecules in pores filled with liquids has been developed. It has been found to represent the diffusion of a variety of materials, from simple molecules to fractions of petroleum asphaltenes.On a Btabli une Bquation pour la diffusion de molkcules de solutB dans des pores remplies de liquides. On a montrB qu'elle peut reprksenter la diffusion de matBriaux aussi divers que des moltkules simples ou des fractions d'asphaltknes de p6trole.

Hindered diffusion of proteins and polymethacrylates in controlled-pore glass: An experimental approach

“…The Ternan model is not able to fit the protein behaviour, but it reasonably fits the polymer one. If the P parameter can be negative, so the viscosity gradient is negative, the fit to protein data at Baltus and Anderson (1983) with asphaltene fractions in mica membranes, whose P value was 2.017 (Ternan, 1987). Results in this study for proteins are similar to those for polyethyleneglycol and dextran from Shao and Baltus (2000a).…”

“…(b) The semiempirical Ternan modelo or model 2 (Ternan, 1987). (c) The model of Shao and Baltus for the LW interaction between a spherical particle and a plane, called model 3 (Shao and Baltus, 2000a,b).…”

“…(a) An exponential empirical model or model 1 (Ternan, 1987). (b) The semiempirical Ternan modelo or model 2 (Ternan, 1987).…”

“…This author also proposed an approach that can be considered intermediate between the phenomenological and empirical models (Ternan, 1987). He considered that the ratio f depends on two factors: a concentration factor and a viscosity or pore wall effect factor.…”

“…empirical model based on an exponential decrease of f with is used (Ternan, 1987). This author also proposed an approach that can be considered intermediate between the phenomenological and empirical models (Ternan, 1987).…”