Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability
Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability
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DOI：
10.1016/j.powtec.2007.05.004
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发表时间：
2007-09-25
影响因子：
5.2
通讯作者：
Tanoglu, M.
中科院分区：
文献类型：
--
作者：
Altay, E.;Shahwan, T.;Tanoglu, M.
使用CaCl2与Na2CO3的水溶液在宽范围的混合和老化温度下进行CaCO3的容易沉淀。然后在PDDA、CTAB和EDTA的存在下，在30 ° C、50 ° C、70 ° C和90 ° C的混合温度下重复沉淀过程。发现这些添加剂的存在极大地抑制了文石的形成。在这些添加剂中，EDTA是一个表现出最突出的影响碳酸钙的颗粒形态。pH调节的顺序似乎是添加剂功能的关键因素。(C)2007 Elsevier B.V.保留所有权利。
Facile precipitation of CaCO3 was performed using aqueous solutions of CaCl2 with Na2CO3 over a wide range of mixing and aging temperatures. The precipitation process was then repeated in the presence of PDDA, CTAB, and EDTA at the mixing temperatures of 30 degrees C, 50 degrees C, 70 degrees C, and 90 degrees C. The presence of these additives was seen to greatly suppress the formation of aragonite. Among these additives, EDTA was the one that showed the most prominent effects on particle morphology of CaCO3. The sequence of pH adjustment appeared to be a critical factor for the additive functionality. (C) 2007 Elsevier B.V. All rights reserved.