Admixtures in Crystallization by Jaroslav Nyvlt, Joachim Ulrich

By Jaroslav Nyvlt, Joachim Ulrich

Utilizing info accumulated from just about all to be had literature, this matchless ebook offers an exhaustive survey of the results of admixtures on crystallization. A concise therapy of present idea and perform makes this e-book appropriate for rookies in addition to fundamental for extra complex chemists and chemical engineers operating during this box.

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While for D < 1 it is depleted, compared with the microcomponent contained in the solution. 4) where x and y are amounts of the micro- and macrocomponent in crystals, 12 k y ) is the differential distribution coefficient in time t andflcJ is the ad- mixture concentration in the interphase. The shape of the function above is determined by the relation between the rates of three subsequent steps: a) transport of the microcomponent from the bulk of solution to the crystal (uR),b) passage of the admixture through the interphase (up) and c) transport of the admixture through the solid phase (vT).

A.. Prim. C.. Slichter. : J. Chem. Phys. : Rost kristallov 3 (1961) 296 [41] Cabrera. N.. : in: Growth and Perfection of Crystals, (eds. Doremus. H.. W.. ), p. 393, Wiley. New York 958 [42] Cannel. , Aubert. : Fractal Patterns in Physics, in: Growth and Form (eds Stanly. E.. ), Nijhoff. Dordrecht 1986 1431 Cayey. W.. Estrin. : Ind. Eng. Chem. Fundam. 6 (1967) 13 (441 Chatterji. C.. : J . Indian Chem. SOC. References 1451 Chen. , Polts. G.. Davey. , Garside. , Bergmann, D.. Nieh6rster. S . Ulrich.

Mechanical Inclusions Under certain conditions. trace amounts of admixtures in solutions can form colloids, the centres of which can contain various impurities like dust particles. During crystallization of the macrocomponent. these substances can be deposited on crystal faces and covered by subsequent layers of the growing crystal. Another extreme case is inclusion of the other liquor inside the growing crystals which usually occurs when crys-tallization proceeds rapidly in unstirred solutions [30].

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