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Symposium on application of pulse techniques to kinetic measurements : Influence of cycling on the rate of oxidation of SO 2 over a vanadia catalyst
Author(s) -
Unni M. P.,
Hudgins R. R.,
Silveston P. L.
Publication year - 1973
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.5450510601
Subject(s) - catalysis , isothermal process , cycling , kinetic energy , steady state (chemistry) , chemistry , thermodynamics , molar ratio , analytical chemistry (journal) , reaction rate constant , materials science , kinetics , environmental chemistry , organic chemistry , physics , history , archaeology , quantum mechanics
Feed composition cycling of the catalytic oxidation of SO 2 to SO 3 in an isothermal, differential reactor was studied using an industrial vanadia catalyst. Reaction was carried out at 405°C using square‐wave cycles of SO 2 , O 2 and N 2 at pressures close to atmospheric and at constant total molar flow through the reactor. Significant increases were found in the rate of oxidation of SO 2 over steady‐state values, depending upon the choice of both amplitude and period. Some preliminary interpretation of these results is provided.