Maximal separation rule

Maximal separation rule A pair of catalytic groups attack a substrate molecule in an opposite rather than adjacent relationship such as the opposite distribution of acidic and basic groups encountered in many enzyme catalyses. This rule arises from ... 

In the above expressions, RT stands for restricted totalistic rules which maximally subdivide the local neighborhood. The inclusion of an ij in the expressions for tp assures that only those sites already linked can be decoupled and the 6 Dij,2) in the equations defining uj are put in to malce sure that only sites separated by distance=2 may be dynamically coupled. 

As mentioned above, both electrons and holes must be efficiently separated and both must reach the particle surface. Even when both reach the surface, recombination may still predominate if both are not consumed in appropriate fast reactions. It is worth reiterating that the requirements for fast reactions are twofold. The first is favorable energetics. The redox couples must be included within the band gap as shown in FIGURE 2. But, it is also necessary to maximize the rate of interfacial electron transfer.- This is essentially a standard problem of electrochemical kinetics and, as such, one for which there are extensive precedents. Above, we mentioned the general theoretical rules. Here, we will give more attention to specific examples. In most cases, experimental results can provide precedents. 

The examples of kinetic curves of change of a liquid phase viscosity and accumulation of the separate products of transformation are shown in Fig. 1 and 2. It is well seen, that the process mostly begins with some, sometimes a small induction period, removable by the period of the autoaccelerated development, achievement of the maximal speed and the subsequent fading. Thus as a rule there is a maximum on the kinetic curves of accumulation of functional groups, which time characteristics for separate functional groups are different. It allows to use time of the discontinuance of oxidative -destructive process as an important factor of management of the received products structure. 

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