Premium
A chromatographic study of the diffusion of N 2 ,CH 4 and binary CH 4 ‐N 2 mixtures in 4A molecular sieve
Author(s) -
Ruthven Douglas M.,
Kumar Ravi
Publication year - 1979
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.5450570316
Subject(s) - molecular sieve , gravimetric analysis , diffusion , thermodynamics , chemistry , sorption , adsorption , binary number , kinetics , chromatography , phase (matter) , analytical chemistry (journal) , organic chemistry , physics , arithmetic , mathematics , quantum mechanics
The kinetics and equilibrium of sorption of CH 4 , N 2 and binary CH 4 –N 2 mixtures in 4A molecular sieve have been studied by a chromatographic method. The equilibrium isotherms and zeolitic diffusivities, determined with a helium carrier, show good agreement with previous gravimetric data. Counter‐diffusion in the binary adsorbed phase was investigated using a mixed carrier gas and following the response to a small step change from a previously established equilibrium position. The dynamic response curves for the binary system could be satisfactorily interpreted on the assumption that both components in the mixture diffuse independently with the same intrinsic mobilities as for the single component systems.