Abstract
This chapter discusses irreducible transport phenomena in chemical kinetics. Transfer of heat and mass is essential to the treatment of rates of reaction in many situations that can be grouped in two categories. In the first category, transport phenomena and, in particular, the flow characteristics that control them are intimately connected with a scale factor. Frequently, the coupling between physical and chemical factors can be said to be irreducible; it is essential to the phenomenon itself. Thus, methane burning in the flame of a Bunsen burner reacts at a rate that is determined by physical and chemical processes that could be uncoupled only by destroying the flame. The chapter discusses a number of effects caused by the irreducible coupling between molecular diffusion of heat or mass and the chemical reaction. It discusses the gel and cage effects, the wall effect, and the penetration effect.
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