Chemical gardens from silicates and cations of group 2: a comparative study of composition, morphology and microstructure

被引：40

作者：

Cartwright, Julyan H. E. ^{[1
]}

Escribano, Bruno ^{[1
]}

Khokhlov, Sergey ^{[1
]}

Ignacio Sainz-Diaz, C. ^{[1
]}

机构：

[1] Univ Granada, CSIC, Inst Andaluz Ciencias Tierra, Granada 18002, Spain

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 03期

关键词：

GROWTH; TUBES;

D O I：

10.1039/c0cp01093f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have compared the behaviour of the chloride salts of the cations Ca2+, Sr2+ and Ba2+ of Group 2 of the Periodic Table in the formation of chemical gardens in silicate solutions. We performed analyses of morphology, composition and microstructure using environmental scanning electron microscopy (ESEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX). We have identified different growth regimes in these salts (jetting and budding), which are dependent on the concentration of the silicate solution. The behaviour is similar for all the cations but reactivity decreases down the group and is directly proportional to the solubility of the salts: Ca2+ > Sr2+ > Ba2+.

引用

页码：1030 / 1036

页数：7

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