Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, Av. Fuentenueva s/n, 18002, Granada, Spain.
Phys Chem Chem Phys. 2011 Jan 21;13(3):1030-6. doi: 10.1039/c0cp01093f. Epub 2010 Nov 10.
We have compared the behaviour of the chloride salts of the cations Ca(2+), Sr(2+) and Ba(2+) 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: Ca(2+) > Sr(2+) > Ba(2+).
我们比较了周期表第 2 族阳离子 Ca(2+)、Sr(2+)和 Ba(2+)的氯化物在硅酸盐溶液中形成化学花园的行为。我们使用环境扫描电子显微镜（ESEM）、X 射线衍射（XRD）和能量色散 X 射线分析（EDX）进行了形态、组成和微观结构分析。我们已经确定了这些盐（喷射和萌芽）中的不同生长阶段，这些阶段取决于硅酸盐溶液的浓度。所有阳离子的行为都相似，但反应性随组降低，并且与盐的溶解度成正比：Ca(2+) > Sr(2+) > Ba(2+)。
