
%0 Journal Article
%A Sutherland, KL 
%A Winfield, ME 
%T Transient rates of gas sorption. II. Rate equations for transport and adsorption in porous adsorbents
%J Australian Journal of Chemistry
%D 1953/09/01
%V 6
%N 3
%P 234-243
%K 
%R https://doi.org/10.1071/CH9530234
%U https://www.publish.csiro.au/paper/CH9530234 
%X Equations are derived to describe the rate at which gas passes into a bed of adsorbent under conditions of constant volume and diminishing pressure. Of the processes which may be responsible for the observed rate of gas uptake, the following three are considered : (i) Knudsen flow within the bed, or within the granules of which it is composed, with simultaneous adsorption that is too fast to be a limiting factor ; (ii) chemisorption which is controlled by the rate of Knudsen flow ; (iii) unrestricted chemisorption.It is shown how the rate constants used in the equations are related to the overall reaction rate constant in a catalyst pore. 
