"This study develops a model for the two-phase epoxidation of soybean oil. This model couples the kinetics of the aqueous phase reactions and the dynamic behavior of the organic phase using mass transfer between the two phases. The effects of the kinetic parameters, the distribution and the mass transfer coefficients, the temperatures, the acidities, the agitation rates and the effect of the initial concentrations are determined. The resulting model describes the behavior of various oxygen carriers on epoxide conversion.
An increase in the distribution coefficient of the oxygen carrier between the two phases from 0.13 to 0.4 increases the conversion to epoxide by 20 percent and decreases the time to maximum conversion by about 50 percent. The conversion is insensitive for any distribution coefficient above 0.4. An eight percent increase in the temperature decreases the reaction time by 50 percent. Temperatures higher than 40°C cause the epoxide to degrade at a rapid rate. Increasing the acidity of the medium to 2.0 M decreases the reaction time by about 25 percent, after which it has an adverse effect.
Increasing the agitation from 50 to 1200 RPM decreases the dispersed phase droplet size from 4100 microns to 90 microns and increases the organic and the aqueous phase mass transfer coefficients 100 and 50 times, respectively. The reaction time is significantly decreased to about 500 minutes for the maximum epoxide production rate"--Abstract, page iii.
Sitton, Oliver C., 1951-
Book, Neil L.
Stoffer, James O.
Chemical and Biochemical Engineering
M.S. in Chemical Engineering
University of Missouri--Rolla
x, 54 pages
© 2000 Harshal Prakash Deshpande, All rights reserved.
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Deshpande, Harshal Prakash, "Modeling the two-phase epoxidation of an olefin" (2000). Masters Theses. 1925.
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