Kinetic reaction scheme

We have found the data obtained from extensive differential-reactor studies to be consistent with a kinetic reaction scheme which involves the following ... 

Creighton ( 3,5) has shown that the induction period of methane oxidation is described by Semenov s model. Analysis of the results of numerical calculations using a detailed chemical kinetics reaction scheme showed that about eight reactions were dominant, and that the rate of creation and consumption of... 

Therefore, an attempt was made to determine the kinetic reaction scheme and effective heat transfer as well as kinetic parameters from a limited number of experimental results in a single-tube reactor of industrial dimensions with side-stream analysis. The data evaluation was performed with a pseudohomo-geneous two-dimensional continuum model without axial dispersion. The model was tested for its suitability for prediction. 

In this respect, the effect of Fe cations on bofh the oxidation rate and complete mineralization rate of phenol and alike aromatic compounds was considered. Optimum conditions were reviewed to use Fe cations as reaction enhancers (henceforth PC reactions involving optimum Fe concentrations are called Fe-assisted PC reactions). This also involved the assessment of effect and mechanism of Fe ions on fhe PC reaction of phenol and other selected aromatic species. A systematic comparison between the kinetic reaction schemes for both unpromoted PC and Fe-assisted PC reactions for the selected model pollutants was also a primary emphasis. Last, the estimation of the enhancement through efficiency factor calculations was described. 

Once the kinetic reaction scheme for the impromoted FC reaction of phenol and other aromatic species was determined, the next step was to... 

For this simple reaction scheme we can see that it is possible to relate the reduced set of differential equations to a kinetic reaction scheme. 

The aim of this work is to investigate the reaction scheme of the thermally induced decomposition of Kapton in air and compare it to the UV laser-induced decomposition. This should help to decide whether the laser-induced decomposition (ablation) of Kapton is comparable to pyrolysis. Using DRIFT spectroscopy the changes in the concentration of different functional groups of the polymer are monitored during the thermal decomposition process. This information is used to develop a kinetic reaction scheme and to calculate kinetic parameters. 

These authors also found that the use of microporous catalysts significantly increases stereoselectivity for butyl jff-D-glucopyranosides [50,56], For instance, the pi a ratio of pyranosides is ca 1.5 for zeolite HY (Si/Al = 15) and ca 0.7 for Beta (Si/Al 12.5), whereas for p-toluenesulfonic acid the p a ratio is intermediate, ca 1. At nearly complete conversion of glucose, however, a thermodynamic ratio p a of 0.5 is obtained. The kinetic reaction scheme proposed by the authors, involving... 

The contribution of consecutive reactions is especially important when the oxygen-containing compound formed is very reactive. The kinetic reaction scheme shown in Fig. 6 was proposed by Isaev, Margolis, and Roginskii 114). The main route of the reaction was supposed to be... 

Beginning with the Ordered Uni Bi kinetic reaction scheme, Main (1964) derived a bimoleciilar inhibition rate constant, A,-, which quantiftes the inhibitory power of an OP toward AChE (the concept of ki can also be extended to BuChE). The A,- is a function of both Kp and k-> (Fig, 5) and has been considered the best estimate of inhibitory capacity of an OP (Fukuto, 1990), The larger the kj, the greater is the capacity of an individual molecule of OP to inhibit an individual molecule of enzyme. Although k, was derived based on OP interactions with AChE, the term kj can be applied with the same meaning to the inhibition of enzyme by the CMs as well (O Brien, 1968). 

The aim is to induce changes in the reaction rates and/or in the selectivity of these reactions via potential or current application. The mechanism of these catalytic reactions is fairly well understood from the vast literature of heterogeneous catalysis. " The main elementary step is the dissociative chemisorption of NO which produces chemisorbed N and O. The desired product N2 is formed by reaction of two adsorbed N atoms. The undesired byproduct N2O comes from the reaction of coadsorbed N and NO. Further mechanistic aspects of these catalytic reactions are out of the scope of this review. As a general rule, the polarization of the catalyst does not modify the kinetic reaction scheme but affects the rate constants. ... 

A simple kinetic reaction scheme for the Interaction of peroxides with polyethylene can be described as follows ... 

Living polymers follow a kinetic reaction scheme looking like... 

Figure 3.6 illustrates an idealized, kinetic reaction scheme of a step reaction. Molecules of all lengths are at all times able to extend. In reality, the forward reaction is usually able to reverse and to depolymerize or to connect the chain ends to rings. 

Character of kinetics Reaction scheme Shape of polarization curve (peak or plateau) proportionality to t v (CTc variations with v and C° ... 

Figure 24. Kinetic reaction scheme for reactor modeling. rj = kojexp(-E/RT)P P ...

FIGURE 10.12 Kinetic reaction schemes to describe hydrocracking and thermal cracking. (Adapted from Scheweitzer, J.-M. and Kressmann, S., Chem. Eng. Sci., 59, 5637, 2004.)... 

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