Calculating the True and Observed Rates of Complex Heterogeneous Catalytic Reactions
| Autor: | A. G. Zyskin, A. K. Avetisov |
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| Rok vydání: | 2018 |
| Předmět: |
Basis (linear algebra)
Thermodynamics 02 engineering and technology 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Set (abstract data type) Matrix (mathematics) 020401 chemical engineering Mass transfer 0204 chemical engineering Physical and Theoretical Chemistry Matrix form Diffusion (business) Stoichiometry Mathematics |
| Zdroj: | Russian Journal of Physical Chemistry A. 92:1107-1114 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s003602441806002x |
| Popis: | Equations of the theory of steady-state complex reactions are considered in matrix form. A set of stage stationarity equations is given, and an algorithm is described for deriving the canonic set of stationarity equations with appropriate corrections for the existence of fast stages in a mechanism. A formula for calculating the number of key compounds is presented. The applicability of the Gibbs rule to estimating the number of independent compounds in a complex reaction is analyzed. Some matrix equations relating the rates of dependent and key substances are derived. They are used as a basis to determine the general diffusion stoichiometry relationships between temperature, the concentrations of dependent reaction participants, and the concentrations of key reaction participants in a catalyst grain. An algorithm is described for calculating heat and mass transfer in a catalyst grain with respect to arbitrary complex heterogeneous catalytic reactions. |
| Databáze: | OpenAIRE |
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