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Influence of magnesium source on the crystallization behaviors of magnesium hydroxide

文献类型:期刊论文

作者Gao, Yanyan1; Wang, Haihua1; Su, Yunlan2; Shen, Qiang1; Wang, Dujin2
刊名JOURNAL OF CRYSTAL GROWTH
出版日期2008-08-01
卷号310期号:16页码:3771-3778
关键词Crystal Morphology Growth From Solutions Chemical Vapor Deposition Processes Magnesium Chloride Magnesium Dodecyl Sulfate Magnesium Hydroxide
ISSN号0022-0248
DOI10.1016/j.jcrysgro.2008.05.032
英文摘要The crystallization of magnesium hydroxide [Mg(OH)(2)] from the aqueous solutions of magnesium chloride (MgCl2) or magnesium dodecyl sulfate [Mg(DS)(2)] was conducted by means of the slowly diffusing of ammonia gas at 30 degrees C. When the aqueous solution of 5.0 x 10(-3) mol/L MgCl2 was used as a reaction medium, the sunflower-shaped superstructures of thin and branched Mg(OH)(2) sheets were obtained at 2 d; the prolongation of reaction time and the increase of MgCl2 concentration caused the formation and the consequent agglomeration of Mg(OH)(2) platelets. Interestingly, the aqueous solution of 5.0 x 10(-3) mol/L Mg(DS)(2) could be referred as the counterpart of 5.0 x 10(-2) mol/L MgCl2 at the surface nucleation of Mg(OH)(2). The precipitates sampled from Mg(DS)(2) solutions at 2 or 3 d presented the lamellar aggregates of Mg(OH)(2) platelets; while these sampled at 6 and 12 d showed the column-shaped structures of Mg(OH)(2) under the transmission electron microscopy (TEM) observation, suggesting the further growth of Mg(OH)(2) platelets along the c-axis perpendicular to the [0 0 1] face. Meanwhile, the nucleation, the crystal orientation, and the crystallographic defect were also discussed, indicating the different crystallization habits of Mg(OH)(2) in the aqueous solutions of different magnesium sources. (c) 2008 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000258801200016
出版者ELSEVIER SCIENCE BV
源URL[http://ir.iccas.ac.cn/handle/121111/64841]  
专题中国科学院化学研究所
通讯作者Shen, Qiang
作者单位1.Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China
2.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem,Beijing Natl La, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Gao, Yanyan,Wang, Haihua,Su, Yunlan,et al. Influence of magnesium source on the crystallization behaviors of magnesium hydroxide[J]. JOURNAL OF CRYSTAL GROWTH,2008,310(16):3771-3778.
APA Gao, Yanyan,Wang, Haihua,Su, Yunlan,Shen, Qiang,&Wang, Dujin.(2008).Influence of magnesium source on the crystallization behaviors of magnesium hydroxide.JOURNAL OF CRYSTAL GROWTH,310(16),3771-3778.
MLA Gao, Yanyan,et al."Influence of magnesium source on the crystallization behaviors of magnesium hydroxide".JOURNAL OF CRYSTAL GROWTH 310.16(2008):3771-3778.

入库方式: OAI收割

来源:化学研究所

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