Influence of CaCl2 on the hydrothermal modification of Mg(OH)2

The influence of CaCl2 on the hydrothermal modification of Mg(OH)2 was investigated in this paper. The experimental results indicated that dispersive Mg(OH)2 hexagonal plates with the regular shape, the enlarged size and the perfect crystallinity were formed by treating the irregular Mg(OH)2 agglome...

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Bibliographic Details
Published inPowder technology Vol. 165; no. 2; pp. 100 - 104
Main Authors WU, Q. L, XIANG, L, JIN, Y
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier 13.07.2006
Subjects
Applied sciences
Chemical engineering
Exact sciences and technology
Miscellaneous
Solid-solid systems
Morphology
Hydrothermal technology
Thermodynamic analysis
Crystallinity
Magnesium hydroxide
Dispersion
Calcium chloride
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Summary:The influence of CaCl2 on the hydrothermal modification of Mg(OH)2 was investigated in this paper. The experimental results indicated that dispersive Mg(OH)2 hexagonal plates with the regular shape, the enlarged size and the perfect crystallinity were formed by treating the irregular Mg(OH)2 agglomerates at elevated temperatures in dilute CaCl2 solutions. Thermodynamic analysis showed that the presence of CaCl2 at the elevated temperature promoted the formation of MgOH+, which was favorable for the formation of Mg(OH)64-and the growth of Mg(OH)2 crystals.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2006.03.023