Abstract
Publisher Summary This chapter discusses interphase reactions and describes the phenomenon of mass transfer in liquid–liquid dispersions. The rate of interphase mass transfer is affected by the physical and chemical characteristics of the system and the mechanical features of the equipment. The former include viscosities and densities of the phases, interfacial surface properties, diffusion coefficients, and chemical reaction coefficients. The latter include the type and diameter of the impeller, vessel geometry, the flow rate of each phase, and the rotational speed of the impeller. When slow reactions in either phase control the rate of transfer, micromixing of the dispersed or continuous phase is not important. The total interfacial surface area is important and can be related to the power expended. Micromixing and macromixing of the dispersed phase can significantly affect the extent of conversion and selectivity. Accordingly, dispersion phenomena such as coalescence and breakage of droplets, and drop size distribution take place. Mass transfer in liquid–liquid dispersions and interphase reactions analysis are presented in this chapter with the help of several useful mathematical models.
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