The Arrhenius plot (logarithmic plot vs. inverse temperature) is represented by a straight line if the Arrhenius equation holds. A curved Arrhenius plot (mostly concave) is usually described phenomenologically, often using polynomials of or 1/. Many modifications of the Arrhenius equation based on different models have also been published, which fit the experimental data better or worse. This paper proposes two solutions for the concave-curved Arrhenius plot. The first is based on consecutive A→B→C reaction with rate constants ≪ at higher temperatures and ≫ (or at least > ) at lower temperatures. The second is based on the substitution of the temperature the by temperature difference - in the Arrhenius equation, where is the maximum temperature at which the Arrheniusprocess under study does not yet occur.
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| http://dx.doi.org/10.3390/molecules26237162 | DOI Listing |
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