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题名: Preparation and Characterization of Basic Magnesium Chloride5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O
作者: Pang Yu-Na ;  Wu Zhi-Ming ;  周园 ;  Wang Hong-Bin
刊名: CHINESE JOURNAL OF INORGANIC CHEMISTRY
出版日期: 2010
卷号: 26, 期号:5, 页码:807-810
英文摘要: Basic magnesium chloride with excellent crystal phase was prepared via hydrothermal synthesis using bischofite from salt lakes and ammonia. The product was obtained by two steps: (1) bischofite reacted with ammonia to form magnesium hydroxide; (2) the thus obtained magnesium hydroxide hydrothermally reacted with bischofite to form basic magnesium chloride, whose properties were characterized by chemical analysis, XRD, SEM and FTIR. The product has a composition of 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O as suggested by chemical analysis. The XRD pattern of the product can not match well with the standard PDF card, suggesting a new phase of 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O. The sample has a diameter of 0.4 mu m, a mean length above 24 mu m and an aspect ratio over 60 according to SEM analysis. FTIR. analysis identifies an absorption band of hydrogen bonds O-H stretching vibration at 3 419 cm(-1) and a free water H-O-H bending vibration absorption band at 1 635 cm(-1), respectively. The 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O prepared by this method features smaller diameter, better crystal phase and higher strength compared to those prepared under atmospheric pressure. Basic magnesium chloride with excellent crystal phase was prepared via hydrothermal synthesis using bischofite from salt lakes and ammonia. The product was obtained by two steps: (1) bischofite reacted with ammonia to form magnesium hydroxide; (2) the thus obtained magnesium hydroxide hydrothermally reacted with bischofite to form basic magnesium chloride, whose properties were characterized by chemical analysis, XRD, SEM and FTIR. The product has a composition of 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O as suggested by chemical analysis. The XRD pattern of the product can not match well with the standard PDF card, suggesting a new phase of 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O. The sample has a diameter of 0.4 mu m, a mean length above 24 mu m and an aspect ratio over 60 according to SEM analysis. FTIR. analysis identifies an absorption band of hydrogen bonds O-H stretching vibration at 3 419 cm(-1) and a free water H-O-H bending vibration absorption band at 1 635 cm(-1), respectively. The 5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O prepared by this method features smaller diameter, better crystal phase and higher strength compared to those prepared under atmospheric pressure.
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/363002/1918
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:
Pang Yu-Na,Wu Zhi-Ming,Zhou Yuan,et al. Preparation and Characterization of Basic Magnesium Chloride5Mg(OH)(2)center dot MgCl2 center dot 3H(2)O[J]. CHINESE JOURNAL OF INORGANIC CHEMISTRY,2010,26(5):807-810.
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