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Observations on sorption and desorption kinetics of n-hexane in zeolite H-RHO

✍ Scribed by Richard M. Barrer; Miguel A. Rosemblat

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
266 KB
Volume
2
Category
Article
ISSN
0144-2449

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✦ Synopsis

Sorption and desorption kinetics of n-hexane in zeolite H-RHO have been measured at several temperatures. If Qt is the amount sorbed or desorbed at time t and Qo~ is this amount in the final state then plots of Qt/Qoo against t show negative temperature coefficients at each Qt for sorption and positive coefficients for desorption. Sorption occurred much more rapidly than desorption at low temperature but the difference in rates decreased with rising temperature. These observations have been considered and explained in terms of the boundary conditions between the crystals at different depths in the bed of zeolite powder and the local vapour phase.

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Kinetics of Sorption, Desorption, and Di
Kinetics of Sorption, Desorption, and Diffusion in Zeolites
✍ Dr. Hans-Joachim Doelle; Prof. Dr. Lothar Riekert πŸ“‚ Article πŸ“… 1979 πŸ› John Wiley and Sons 🌐 English βš– 654 KB

## 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