Isotopic effects in the kinetics of heterogeneous catalytic reactions

“…n; -n; rJLI -rJLT Formulae (4.8) are similar to those given by Boreskov [4,8]' but for their application it is not necessary that the kinetic equation should be exponential. They can be used to determine a stoichiometric number for the rate-determining step according to the experimental data.…”

Section: Examples Let's Consider the Impact Mechanism 1)mentioning

confidence: 95%

Kinetic Polynomial: A New Concept of Chemical Kinetics

Lazman

Yablonskii

1991

Patterns and Dynamics in Reactive Media

View full text Add to dashboard Cite

Abstract. A system of quasi-steady-state equations for a single pathway mechanism of a catalytic reaction can always be reduced to a polynomial in terms of the steady state reaction rate, a kinetic polynomial. The coefficients of this polynomial are polynomials in the parameters of the elementary reaction rates. The form of the lowest coefficient of the polynomial ensures the thermodynamic validity of this form of representation of quasi-steady-state equations. The properties of the kinetic polynomial are discussed in connection with such concepts of chemical kinetics as "molecularity", "stoichiometric number" .Possible applications of this form are: asymptotic analysis of steady-state kinetic models as well as analysis of steady-state multiplicity; description of the steady-state dependences of the reaction rate, determining relations between kinetic constants when solving the inverse problem.On the basis of kinetic polynomial explicit equations for the steady-state rate in case when one of the steps is rate-limiting, and in the neighbourhood of equilibrium have been derived.Algorithm of computation of the kinetic polynomial and its realisation on the basis of computer algebra are described.

show abstract

“…А theory for the adsorption and catalytic processes оп inhomogeneous surfaces was suggested Ьу Roginskii [60]. The present-day state of the problem and, which is most important, the experience accumulated in the use of kinetic models accounting for the biographical inhomogeneity had been reported Ьу Snagovskii and Ostrovskii [37] and Ьу Кiperman [42,61]. Deviations from the surface-action law in the аЬоуе models are primarily observed Ьу the fact that kinetic equations are powers with fractional exponents that remain unchanged over а wide range of the parameters.…”

Section: Models Accounting {Or Catalyst Inhomogeneitymentioning

confidence: 99%

Chapter 2 The Development of Basic Concepts of Chemical Kinetics in Heterogeneous Catalysis

1991

Kinetic Models of Catalytic Reactions

View full text Add to dashboard Cite

Isotopic effects in the kinetics of heterogeneous catalytic reactions

Cited by 17 publications

References 4 publications

The Kinetics of Dissolution of the Carbonate Minerals of Phosphate Ores using Dilute Acetic Acid Solutions: The Case of pH Range from 3.96 to 6.40

The Kinetics of Dissolution of the Carbonate Minerals of Phosphate Ores using Dilute Acetic Acid Solutions: The Case of pH Range from 3.96 to 6.40

Kinetic Polynomial: A New Concept of Chemical Kinetics

Chapter 2 The Development of Basic Concepts of Chemical Kinetics in Heterogeneous Catalysis

Contact Info

Product

Resources

About