Kinetic mass transport

This chapter attempts to give an overview of electrode processes, together with discussion of electron transfer kinetics, mass transport, and the electrode-solution interface. 

Fig. 2 shows a schematic diagram of a micro-channel of reformer section to be examined in this study. A multi-physics computer-aided numerical model framework integrating kinetics, mass transport, and flow dynamics in micro-channel reactors has been established. 

Rafler, G., Reinisch, G. and Bonatz, E., Kinetics, mass transport and thoughts about the mechanism of the formation of polyethylene terephthalate by metal ion catalysis, Acta Chim. (Budapest), 81, 253-267 (1974). 

How does one go about constructing such a model Three pieces of information are required to define the experimental system kinetics, mass transport and experimental technique. 

Vieth, W. R., Bioprocess Engineering Kinetics, Mass Transport, Reactors, and Gene Expression, Wiley, New York, 1994. 

The premise of molecular biology is that cellular processes are governed by physico-chemical principles, and accordingly, those principles may be used to translate known or hypothetical molecular mechanisms to mathematical equations. In this section, the general principles of chemical kinetics, mass transport, and fluid mechanics used to model chemical reaction systems are reviewed briefly. 

Lichtner P. C. (1993) Scaling properties of time-space kinetic mass transport equations and the local equilibrium assumption. Am. J. Sci. 293, 257-296. 

Fig. 10. ORR current (a), kinetic (mass-transport-controlled) ORR current (b) and the apparent slope dV/d log J (c) as functions of cathode potential, obtained with the cell in Fig. 7 at 30 °C [9]. (Reprinted by permission of the Electrochemical Society).

Fig. 40 (a) ORR current, (b) kinetic (mass-transport-corrected) ORR current and (c) the... 

The extent of distortion of the voltammogram from Eq. (36) can be measured and related to ko since the relationship between the two parameters has been determined by numerical solution of the mass-transport equation for microelectrode voltammetry under mixed kinetic-mass-transport control [105]. This approach has been used to determine ko values ( 1.0 cm s ) for the transfer of the laurate anion across the water-rc-octanol interface [106] and for the transfer of the tetramethylammonium ion ( 1.5 cm s ) across the water-DCE interface... 

Using the kinetic mass transport constant, m, which is the ratio of the diffusion coefficient to the diffusion layer thickness ... 

Analyze experimental data on reaction kinetics, mass transport rates, current efficiencies, and chemical yields. Do laboratory experiments if gaps in knowledge are discovered. 

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