ISSN:
0001-1541
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Dynamic experiments provide an opportunity to determine, separately, values of the adsorption and surface reaction rates occurring in a heterogeneous, catalytic reaction. In this method it is not necessary to assume that either adsorption, surface reaction, or desorption controls the rate, in contrast to the procedure used for analyzing steady state rate data.The dynamic method is applied to experimental data for the oxidation of sulfur dioxide in a three-phase aqueous-slurry reactor using activated carbon as the catalyst. The results for 274.5 K show that both rates of reversible adsorption of oxygen and the subsequent, irreversible surface reaction affect the overall rate. Neither process can be considered to be controlling.The data required for the analysis are the zero and first moments of the response in the effluent gas to a disturbance in the feed, the adsorption equilibrium constant for oxygen, and appropriate mass transfer coefficients.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aic.690310403
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