Untersuchungen zur Sekundärkeimbildung von Natriumchlorat mit Hilfe der asymmetrischen Kristallisation

Mayer, Christoph Oliver; Lacmann, R.

doi:10.1002/cite.330700407

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Crystal Nucleation1

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1999

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“…For a given suspension density, the number of crystals is proportional to L 3 . Therefore, the rate of nucleation in the volume (m ±3´s±1 ) is proportional to L [7,8]. Here, lnB linearly depends on lns.…”

Section: Crystal Nucleationmentioning

confidence: 98%

Kinetics of Nucleation and Crystal Growth

Lacmann

Herden

Mayer³

1999

Chem. Eng. Technol.

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This paper deals with homogeneous and heterogeneous primary nucleation and the atomistic model of heterogeneous primary and secondary nucleation. Three aspects of crystal growth mechanisms will be taken into account: growth by two-dimensional nucleation, the so-called birth and spread model, spiral growth without and with consideration of the influence of diffusion, and finally adhesive growth. An equation for the estimation of the growth rate of imperfect crystals including dislocations, published by Mersmann [1], is discussed. The influence of additives on nucleation and crystal growth, respectively, will be exemplarily explained for several model systems. The effect of growth rate dispersion (GRD) is described. Therefore, some experimental results concerning growth rates and different ways to influence growth are represented and discussed. Furthermore, a model explaining the effect of GRD is represented.

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Section: Crystal Nucleationmentioning

confidence: 98%