Integral method of analysis of fischer-tropsch synthesis reactions in a catalyst pellet

A generalized integral method is developed to analyze complex reactions in a catalyst pellet. This method is valid for any kinetics and takes into account both internal and external heat and mass transfer effects. The integral equations are solved for a Fischer-Tropsch kinetic model to obtain effectiveness factors. Isothermal multiplicities are observed for low values of the surface coverage parameter α(α = 1/K1pco,0), and low values of the parameter σ21 (ratio of Thiele moduli for H2 and CO). The effectiveness factor is mildly sensitive to the external resistances.

[1]  J. Villadsen,et al.  Diffusion and reaction on spherical catalyst pellets: steady state- and local stability analysis , 1972 .

[2]  D. Gidaspow Green's functions for the Graetz problem and interfacial concentrations , 1971 .

[3]  Arthur S. Kesten An integral equation method for evaluating the effects of film and pore diffusion of heat and mass on reaction rates in porous catalyst particles , 1969 .

[4]  V. Hlavácek,et al.  Modelling of chemical reactors—IX Non-isothermal zero-order reaction within a porous catalyst particle☆ , 1968 .

[5]  A. Varma,et al.  Stability of the steady states and transient behavior for a non-isothermal bimolecular langmuir-hinshelwood reaction , 1979 .

[6]  C. Prater,et al.  The temperature produced by heat of reaction in the interior of porous particles , 1958 .

[7]  C. Satterfield,et al.  Effectiveness Factor for Porous Catalysts. Langmuir-Hinshelwood Kinetic Expressions for Bimolecular Surface Reactions , 1966 .

[8]  W. R. Paterson,et al.  A simple method for the calculation of effectiveness factors , 1971 .

[9]  N. Amundson,et al.  Boundary value problems in transport with mixed or oblique derivative boundary conditions—I: Formulation of equivalent integral equations , 1979 .

[10]  D. Gidaspow,et al.  Nonlinear coupled heat and mass exchange in a cross-flow regenerator , 1974 .

[11]  J. Carberry,et al.  Non-isothermal inter-intraphase effectiveness factors for negative order kinetics—CO oxidation over Pt , 1975 .

[12]  D. J. Gunn Non-isothermal reaction in catalyst particles , 1966 .

[13]  R. Aris,et al.  Communications on the theory of diffusion and reaction - VI. The effectiveness of spherical catalyst particles in steep external gradients , 1970 .