ISSN:
0001-1541
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The physical adsorption and desorption of argon and nitrogen on fixed beds of 18 × 20 mesh silica gel at -78.5°C. and 1 atm. have been studied. Binary mixtures containing 5.52, 10.34, 51.0, 90.16, 95.13 mole % nitrogen, as well as pure argon and pure nitrogen, were used. Superficial gas velocities were varied from 0.10 to 0.27 ft./sec. Concentration vs. time curves were obtained at bed depths of 5.3, 8.6, and 12.0 in.Resistance to mass transfer from the gas stream to the outside surface of the particles was found to be negligible. The rate is limited due to mass transfer from the outside surface to the internal surface of the particle. The data were correlated by the integrated Rosen diffusion solution with D = 9.60 (10-8) sq.ft./sec. or alternatively, by the Hiester and Vermeulen integrated model with kp = 0.23 sec.-1.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aic.690120224
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