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Chernavskii P. A., Kuzmichiov A. N.
Simulation of Topochemical Process in
Nanoparticles
Abstract
For the first time a model has been applied, which
takes into account stochastic properties of topochemical reactions to solve
problems of the topochemical kinetics. Such approach overcomes difficulties in
attemps to solve the problems analytically. Within the scope of this model a
namber of dimensional dependencies has been studied, which can not be obtained
in analytical way. In particular, it was shown that dependence of the reaction
rate from the particle size is described by decaying exponential function. The
time, corresponding to the maximal reaction rate, obeys the expression ln(n),
where n is partical size. The nucleation kinetics is in good accordance with
the exponential growth law at the great values of the nucleation constant, but
strongly deviates from this dependence at small values.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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