Kinetics of gas‐liquid reactions part I. General theory

Wiley - Tập 67 Số 7 - Trang 563-586 - 1948
D.W. Van Krevelen1, P. J. Hoftijzer1
1Central Institute for Technical Research of the Netherlands State Mines, Chemical Laboratory, Geleen, The Netherlands

Tóm tắt

AbstractWhen a gaseous component is absorbed by a liquid under simultaneous reaction with a component of the liquid, the overall rate of reaction proves to be a dimensionless function of four limiting rates: the maximum rate of diffusion of the gaseous component through the liquid film the maximum rate of diffusion of the liquid‐component through the liquid film the limiting rate of reaction within the liquid film (during diffusion) the maximum rate of reaction within the main body of the liquid. A graphical representation of the theoretical relationship enables one to predict the overall rates of interphase mass exchange under arbitrary conditions, as soon as reaction velocity coefficients and mass transfer coefficients are available.

Từ khóa


Tài liệu tham khảo

Whitman W. G., 1923, Chem. Met. Eng., 29, 146

For significance of symbols see page

In this paper we assume for reasòns of simplicity that the diffusivities of A and B are equal. When there are appreciable differences between DAand DRin every mass transfer equation BLresp. δ B has to be replaced by\documentclass{article}\pagestyle{empty}\begin{document}$\frac{{{\rm D}_{\rm B}}}{{{\rm D}_{\rm A}}}$\end{document}BLresp.\documentclass{article}\pagestyle{empty}\begin{document}$\frac{{{\rm D}_{\rm B}}}{{{\rm D}_{\rm A}}}$\end{document}δ B.

Hatta S., 1928, Technol. Repts. Tòhoku Imp. Univ., 8, 1

T. K.Sherwood Absorption and Extraction New York1937 p.214.

10.1002/recl.19480670207

10.1002/recl.19470660106

In equation (17) BLmay be equal to Bc'but this is not essential for the further discussion.