## Abstract Sorption and desorption in zeolites (molecular sieves) have to be considered as complex processes, involving simultaneous diffusion in zeolite crystals, mass transfer in the intercrystalline void of a pellet, and heat transfer between the zeolitic sorbent and its surroundings. The kinet
The sorption and diffusion of ethane in type A zeolites
β Scribed by K.F. Loughlin; D.M. Ruthven
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 679 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
Published kinetic and equilibrium data for the sorption of ethane in various cationic forms of type A zeolite are discussed and interpreted in comparison with experimental data, obtained by the authors, for the SA Linde zeolite. It is shown that the equilibrium data for all the zeolites can be correlated according to potential theory in terms of a single characteristic curve. The kinetic data are interpreted in terms of drag coefficients and it is shown that the diisional resistances of the various zeolites follow the expected order: KA > NaA -LiA > CaA.
For Linde SA zeolite it is shown that both the kinetics and equilibrium of sorption are essentially the same for crystals and pellets whereas for Linde 4A zeolite the ditfusional resistance of the pellets is considerably larger than that of the crystals. A possible explanation for this difference is suggested.
π SIMILAR VOLUMES
## Abstract Molecular Dynamic (MD) simulations were carried out to determine the MaxwellβStefan (MβS) diffusivities, Δ~i~, and selfβdiffusivities, __D__~i,self~, of methane (C1), ethane (C2), and propane (C3) for a variety of molecular loadings, __q__~i~, in three classes of zeolite topologies: (1)
Intracrystalline diffusivities of Y type zeolite were measured in the temperature range of 323-573 K for four aromatics: benzene, toluene, and ortho-, alld para-xylene, and four paraffins: n-hexane, n-heptane, n-oclane and iso-octane. Three model equations tbr calculating the intracrystalinc dillhsi