Premium
Sorption in davison 5 a molecular sieves
Author(s) -
Ruthven D. M.,
Derrah R. I.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500611
Subject(s) - sorption , molecular sieve , adsorption , desorption , isothermal process , propane , thermodynamics , kinetics , tortuosity , materials science , chemical engineering , chemistry , porosity , organic chemistry , physics , quantum mechanics , engineering
Kinetic and equilibrium data are reported for the sorption of propane, propylene and 1‐butene in two commercial 5A molecular sieves (Davison C‐521 and C‐626). It is shown the kinetics of sorption are controlled by the diffusional resistance of the macropores and tortuosity factors are calculated from the experimental data. Rates of sorption are compared with previous data for the Linde 5A sieve. For measurements over large step changes in concentration, adsorption is much faster than desorption but these differences can be quantitatively accounted for by considering the non‐linearity of the equilibrium isotherms.