absolute reaction rate

absolute reaction rate

[′ab·sə‚lüt rē′ak·shən ‚rāt]
(physical chemistry)
The rate of a chemical reaction as calculated by means of the (statistical-mechanics) theory of absolute reaction rates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Therefore, in this work a unified constitutive model based on the absolute reaction rate theory was attempted to be developed.
Under the absolute reaction rate theory [25], Valanis and Lalwani [11] proposed that the internal variable could be expressed as the average displacement of a group of atoms subjected to a certain energy barrier.
It should be pointed out that although the absolute reaction rate theory was adopted from chemistry, the corresponding application to the evolution of material microstructure was widely generalized as the unity of chemistry and physics [25].
(1) By the internal variable thermodynamics utilization, a viscoplasticity constitutive model that described the relationship between inelastic strain rate and overstress was established under the framework of the absolute reaction rate theory.
Lalwani, "Thermodynamics of internal variables in the context of the absolute reaction rate theory," Journal of Chemical Physics, vol.
The most used a following structures of ANNs for modelling of absolute reaction rate for ammonia production processes are shown in Fig.2 and Fig.3:
Instead of mechanistic absolute reaction rates it is of advantage to use artificial neuron networks (ANN) subsystems for modelling ammonia production absolute reaction rates in order to catch the important phenomena hidden in the process data that cannot be used in mechanistic models of the reaction rates.
To evaluate the absolute reaction rate (for instance, to determine the concentrations of oxidation products), additional techniques have to be applied.