Premium
Effect of Gel Parameters on Nucleation and Growth of CaSO 3 · 0.5 H 2 O Crystals in Silica Gel
Author(s) -
Patil S. N.,
Rao A. Venkateswara
Publication year - 1991
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170260707
Subject(s) - nucleation , silica gel , materials science , chemistry , chemical engineering , crystallography , chromatography , organic chemistry , engineering
Abstract In continuation to our previous work on the gel growth of single crystals, this paper describes the effect of concentration of feed solution, gel pH, gel density, ageing of gels, intermediate neutral gel and concentration programming on nucleation and growth of CaSO 3 0.5 H 2 O crystals. Transparent single crystals of CaSO 3 0.5 H 2 O have been obtained at low pH and low density gels. Gel ageing and intemediate neutral gel column reduce the nucleation centres and increase the size of crystals without affecting their quality. The nucleation density increases with the increase of concentration of feed solution. By concentration programming the size of the crystals increases.