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Growth Kinetics of Barium Sulphate in Suspension
Author(s) -
Hostomský J.,
Rathouský J.,
Skřivánek J.
Publication year - 1981
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.2170160704
Subject(s) - supersaturation , barium sulphate , barium , kinetics , suspension (topology) , growth rate , volumetric flow rate , chemistry , crystal growth , analytical chemistry (journal) , materials science , chemical engineering , mineralogy , inorganic chemistry , thermodynamics , crystallography , chromatography , mathematics , organic chemistry , physics , geometry , quantum mechanics , homotopy , pure mathematics , radiochemistry , engineering
The growth rate of barium sulphate seed crystals from stirred solutions was studied conductometrically at 25°C by a stopped‐flow technique. The supersaturation ranged from 3 × 10 −7 to 3 × 10 −8 mol BaSO 4 /cm 3 . The seed crystals were grown in the system during the initial (steady‐state) period of the experiment. Crystal size distributions were determined by optical microscopy. The growth rate of barium sulphate under the conditions of the experiments can be expressed by a quadratic function of supersaturation. The results, which suggest an interface rate‐controlling mechanism, are discussed with respect to published data.