Thermal decomposition of Sn(II), Pb(II), Cd(II) and Hg(II) cross-linked metal-alginate complexes

被引：0
|
作者：
El-Gahami, MA [1 ]
Khairou, KS
Hassan, RM
机构：
[1] Assiut Univ, Fac Sci, Dept Chem, Assiut 71516, Egypt
[2] Umm Alqura Univ, Fac Sci Appl, Dept Chem, Makkah Al Mukarramah 5576, Saudi Arabia
来源：
BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY | 2003年 / 51卷 / 02期
关键词：
thermal decomposition; alginates; polysaccharides; metal ions; complexes;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The thermal decomposition of tin(II), lead(II), cadmium(II) and mercury(II) metal-alginate complexes has been studied using thermogravimetry (TG) and differential thermogravimetry (DTG) measurements. The TG curves showed three stages of weight loss, the DTG curves indicated the presence of a series of thermal stages associated with the TG curves. Dehydration of the coordinated water molecules occurred in the first stage, followed by decomposition of the dehydrated complexes in the next two stages. Thermal stability of these complexes in terms of the strength of chelation and coordination geometry is discussed.
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收藏
页码：105 / 113
页数：9
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