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Metastable zone width of SrCl 2 ·6H 2 O during cooling crystallization
Author(s) -
Qian Yuanyuan,
Lu Guimin,
Sun Yuzhu,
Song Xingfu,
Yu Jianguo
Publication year - 2014
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.201300303
Subject(s) - crystallization , saturation (graph theory) , impurity , metastability , seeding , analytical chemistry (journal) , crystal (programming language) , ion , seed crystal , materials science , chemistry , mineralogy , crystallography , thermodynamics , chromatography , single crystal , physics , mathematics , organic chemistry , combinatorics , computer science , programming language
The metastable zone width (MSZW) of SrCl 2 ·6H 2 O during cooling crystallization was determined by the focused beam reflectance measurement (FBRM). The effects of the saturation temperature, cooling rate, stirring rate, and Ca 2+ ion impurity on the MSZW were investigated. The MSZW increased with the increase in the cooling rate and decreased with the increase in the saturation temperature, stirring rate, and Ca 2+ ion concentration. Moreover, the effect of seed crystals on the MSZW was investigated, where two types of seeds were used, namely, seed 1# and 2# with volume mean crystal sizes of 64 and 218 µm, respectively. The seeded MSZW decreased than the unseeded one. The MSZW of seed 1# was greater than that of seed 2# when the same amount of seed was used. The MSZW of seed 1# increased with the increase in the seed loading, whereas that of seed 2# decreased.
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