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碱式硫酸镁晶须的一步法水热合成及生长机理
作者:高传慧1 许军1 王传兴1 武玉民1 李先国2 
单位:1. 青岛科技大学化工学院 山东 青岛 266042 2. 中国海洋大学海洋化学理论与工程技术教育部重点实验室 山东 青岛 266100 
关键词:碱式硫酸镁晶须 一步法 水热合成 生长机理 
分类号:O614.22
出版年,卷(期):页码:2011,39(5):41-46
DOI:
摘要:

以MgCl2、MgSO4和氨水为原料,采用一步法水热合成碱式硫酸镁晶须[MgSO4·5Mg(OH)2·2H2O,magnesium hydroxide sulfate hydrate,MHSH]。用扫描电镜、透射电镜、X射线能谱仪和X射线衍射仪等对产物的形貌和组成进行表征,结果表明:采用一步法190 ℃水热反应5 h合成的MHSH晶须呈纤维状,且一端聚集成扇形,晶须直径为0.5~2 μm,长径比为50~200;MHSH晶须的生长机理实质上是生长基元Mg-O6从周围环境中通过界面不断进入晶格位点的过程;晶须生长是晶体内部缺陷——螺型位错延伸的结果。

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Magnesium hydroxide sulfate hydrate (MHSH) whiskers were prepared with magnesium chloride, ammonia and magnesium sulfate as starting raw materials by an one-step hydrothermal method. The stoichiometric composition of the whiskers is MgSO4·5Mg(OH)2·2H2O. The effect of reaction condition on the composition and morphology of products was investigated by scanning electron microscope, transmission electron microscope, X-ray powder diffraction and energy dispersive X-ray spectroscopy. The MHSH whiskers were prepared at 190 ℃ for 5 h. The products exhibited a randomly arranged, fanlike morphology with the average diameter of 0.5-2 μm and aspect ratios between 50 and 200. It is indicated that the growth of MgSO4?5Mg(OH)2?2H2O whiskers is essentially the process of Mg-O6 entering the crystal lattice through the interface. The extension of dislocations could result in the growth of the whiskers.

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基金项目:
青岛市科技发展计划项目(06-2-2-14-jch)
作者简介:
博士
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参考文献:

[1] BISCHOFF J L, SEYFRIED W E. Hydrothermal chemistry of seawater from 25 ℃ to 350 ℃ [J]. Am J Sci, 1978, 278(6): 838-860. [2] XIANG L, LIU F, LI J. Hydrothermal formation and characterization of magnesium oxysulfate whiskers [J]. Mater Chem Phys, 2004, 87(2/3): 424-429. [3] 龙飞, 邹正光, 崔超, 等. 高岭石/聚苯乙烯插层复合物碳热还原反应制备碳化硅晶须/氧化铝复相陶瓷粉体[J]. 硅酸盐学报, 2009, 37(5): 767-772. LONG Fei, ZOU Zhengguang, CUI Chao, et al. J Chin Ceram Soc (in Chinese), 2009, 37(5): 767-772. [4] UENO K, AKAGAWA T, OBANA K. Fibrous magnesium oxysulfate granular form and thermoplastic resin composition containing the magnesium oxysulfate [P]. United States Patent, 4997871, 1991. [5] OTAKA S, MATAUNAMI T, TASAKA Y. Fibrous anhydrous magnesium oxysulfate and process for the preparation thereof [P]. United States Patent, 5326548, 1994. [6] YUE Tao, GAO Shiyang, ZHU Lixia, et al. Crystal growth and crystal structure of magnesium oxysulfate 2MgSO4?Mg(OH)2?2H2O [J]. J Mol Struct, 2002, 616(1-3): 247-252. [7] WILLIAM E, SEYFRIED J R, MICHAEL J M. Hydrothermal alteration of basalt by seawater under seawater-dominated conditions [J]. Geochim Cosmochim Acta, 1982, 46(6): 985-1002. [8] LWANAGA H, IWASAKI T, REIZEN K, et al. Method for tensile experiments with ceramic fibers having a diameter of a few micrometers [J]. J Am Ceram Soc, 1992, 75(5): 1297-1299. [9] 朱黎霞, 岳涛, 高世扬, 等. Mg(OH)2·2MgSO4·2H2O晶体的水热生长过程[J]. 物理化学学报, 2003, 19(3): 212-215. ZHU Lixia, YUE Tao, GAO Shiyang, et al. Acta Phys Chim Sin (in Chinese), 2003, 19(3): 212-215. [10] ZHANG T W, ELLIS G S, WALTERS C C, et al. Geochemical signatures of thermochemical sulfate reduction in controlled hydrous pyrolysis experiments [J]. Org Geochem, 2008, 39(3): 308-328. [11] DING Yi, ZHANG Guangtao, ZHANG Shuyuan, et al. Preparation and characterization of magnesium hydroxide sulfate hydrate whiskers [J]. Chem Mater, 2000, 12(10): 2845-2852. [12] 朱黎霞, 岳涛, 高世扬, 等. MgSO4·5Mg(OH)2·3H2O的水热合成及反应时间对其形貌的影响[J]. 无机化学学报, 2003, 19(1): 99-102. ZHU Lixia, YUE Tao, GAO Shiyang, et al. Chin J Inorg Chem (in Chinese), 2003, 19(1): 99-102. [13] 马志岭, 贾巍, 高文贵, 等. 碱式硫酸镁晶须的合成及应用[J]. 无机盐工业, 2006, 38(4): 40-41. MA Zhiling, JA Wei, GAO Wengui, et al. Inorg Chem Ind (in Chinese), 2006, 38(4): 40-41. [14] DING Yi, ZHAO Huazhang, SUN Yugang, et al. Superstructured magnesium hydroxide sulfate hydrate fibres: Photoluminescence study [J]. Int J Inorg Mater, 2001, 3(2): 151-156. [15] 岳涛, 高世扬, 朱黎霞, 等. 5Mg(OH)2·MgSO4·2H2O晶须生长过程中的形貌研究[J]. 无机化学学报, 2002, 18(3): 313-315. YUE Tao, GAO Shiyang, ZHU Lixia, et al. Chin J Inorg Chem (in Chinese), 2002, 18(3): 313-315. [16] MA Peihua, WEI Zhongqing, XU Gang. Dehydration and desulfuration of magnesium oxysulfate whisker [J]. J Mater Sci Lett, 2000, 19(3): 257-258. [17] ZHOU Zhengzhi, DENG Yulin. Solution synthesis of magnesium hydroxide sulfate hydrate nanobelts using sparingly soluble carbonate salts as supersaturation control agents [J]. J Colloid Interface Sci, 2007, 316(1): 183-188. [18] YUE Tao, ZHU Lixia, LIU Zhihong. Thermochemistry of magnesium oxysulfate [J]. Thermochim Acta, 2003, 402(1/2): 237-240. [19] 刘峰, 向兰, 金涌. 水热法制备碱式硫酸镁晶须的过程机制[J]. 无机材料学报, 2004, 19(4): 784-788. LIU Feng, XIANG Lan, JIN Yong. J Inorg Mater (in Chinese), 2004, 19(4): 784-788. [20] 弥勇, 陈建铭, 宋云华. 添加有机酸水热法制备碱式硫酸镁晶须的研究[J]. 无机盐工业, 2007, 39(1): 23-24. MI Yong, CHEN Jianming, SONG Yunhua. Inorg Chem Ind (in Chinese), 2007, 39(1): 23-24. [21] 弥勇, 陈建铭, 宋云华. 制备条件对生成碱式硫酸镁晶须的影响[J]. 化工矿物与加工, 2007 (4): 14-16. MI Yong, CHEN Jianming, SONG Yunhua. Ind Miner Process (in Chinese), 2007(4): 14-16. [22] 李武. 无机晶须[M]. 北京: 化学工业出版社, 2005: 4-5. LI Wu. Inorganic Whisker (in Chinese). Beijing: Chemical Industry Press, 2005: 4-5. [23] 张克从, 张乐潓. 晶体生长科学与技术[M]. 北京: 科学出版社, 1997: 51-56. ZHANG Kecong, ZHANG Lehui. Science and Technology of Crystal Growth (in Chinese). Beijing: Science Press, 1997: 51-56.

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