Abstract
Background and evolution of the two-step crystal growth model is reviewed. The previously introduced kinetic equation combining the three constants of this model, i.e. the mass transfer coefficient, k d, the surface reaction rate constant, k r, and the surface reaction order, r, is discussed in detail. It is shown that neither the correlation errors of the kinetic equation nor values of the mass transfer coefficient are considerably affected by a choice of the surface reaction order. By setting r = 2.0 a standardized pair of k d and k r constants is obtained and shown to be a valuable tool in either quantitative descriptions or clarification of the effects of various factors on the crystal growth kinetics. Examples of applications of the standardized constants cover the effects of temperature, hydrodynamics and cationic admixtures on the crystal growth kinetics as well as the interrelations of crystal growth vs dissolution and of crystal growth vs secondary nucleation.
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