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题名: The growth mechanism of hydrotalcite crystal
作者: Wu JianSong ;  Xiao YingKai ;  Wan JianYu ;  Wen LiRong
刊名: SCIENCE CHINA-TECHNOLOGICAL SCIENCES
出版日期: 2012
卷号: 55, 期号:4, 页码:872-878
关键词: model of anion coordination polyhedron growth units ;  growth mechanism
英文摘要: From the point of growth units, the growth mechanism of hydrotalcite (HT) crystal is investigated in this paper. Results show that the growth morphology of HT is consistent with the model of anion coordination polyhedron growth units. The Raman shift of growth solutions of HT, Cu-HTlc, and Cu-Zn-HTlc are monitored using Raman spectroscopy. In the experiment, the growth units of Mg-Al-hydrotalcite are [Mg-(OH)(6)](4-) and [Al-(OH)(6)](3-), and the growth units of Cu-Htlc and Cu-Zn-HTlc are [Mg-(OH)(6)](4-) and [Al-(OH)(6)](3-), respectively. The growth process of hydrotalcite is as follows: growth units first incorporate into metal layers, then metal layers adsorb A (n-) and H2O, and the growth units incorporate into layer compounds according to this rule. Growth units will have different incorporations and growth morphologies caused by different growth surroundings. Furthermore, the reason why Cu-HTlc is difficult to synthesize is also interpreted in this paper. From the point of growth units, the growth mechanism of hydrotalcite (HT) crystal is investigated in this paper. Results show that the growth morphology of HT is consistent with the model of anion coordination polyhedron growth units. The Raman shift of growth solutions of HT, Cu-HTlc, and Cu-Zn-HTlc are monitored using Raman spectroscopy. In the experiment, the growth units of Mg-Al-hydrotalcite are [Mg-(OH)(6)](4-) and [Al-(OH)(6)](3-), and the growth units of Cu-Htlc and Cu-Zn-HTlc are [Mg-(OH)(6)](4-) and [Al-(OH)(6)](3-), respectively. The growth process of hydrotalcite is as follows: growth units first incorporate into metal layers, then metal layers adsorb A (n-) and H2O, and the growth units incorporate into layer compounds according to this rule. Growth units will have different incorporations and growth morphologies caused by different growth surroundings. Furthermore, the reason why Cu-HTlc is difficult to synthesize is also interpreted in this paper.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2063
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Wu JianSong,Xiao YingKai,Wan JianYu,et al. The growth mechanism of hydrotalcite crystal[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2012,55(4):872-878.
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