Abstract
Szarawara–Kozik’s temperature criterion, suggested many years ago, has been reinterpreted as three-parameter fitting equation. We demonstrated interpretation of the chemical reactions of ammonia and methanol catalytic decomposition (to produce syngas and hydrogen) by associating two parameters with the activation energy and the average enthalpy of reaction for the equilibrium conversion degrees. It was proved that the three-parameter equation can be applicable to studying a wide variety of catalytic/enzymatic processes in isothermal conditions.
Highlights
Kinetic considerations and interpretations of catalytic and non-catalytic reactions have been performed in many publications
Criteria used for the obtained results of catalytic decomposition of ammonia indicate a considerable more efficient activity of nanocatalysts [16] in relation to the earlier studies [11] and the DFE
The numerical scale DFE can be determined by the average values: DrH = 49.2 kJ mol-1, activation energy for data from
Summary
Kinetic considerations and interpretations of catalytic and non-catalytic reactions have been performed in many publications. The constant C has a quite complex origin and depends on the equivalent time of reaction, initial concentrations and grain size of catalyst, but in any case, it does not contain the pre-exponential factor (A) in the Arrhenius equation. In this context, in publications [8,9,10,11] a discussion is presented on the decomposition of ammonia, methanol, some inorganic salts or solids as well as SO2 oxidation to SO3. Therein, the temperature criterion 1 was used to analyze the thermal dissociation of a condensed phase assigning a particular form for C constant in dynamic conditions, that is, for heating rate q [ 0 [12]: ln a 1⁄4 ln 0; 005AE À E=RT; 0\a\0; 2
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