Study of Dehydration of Magnesium Hydroxide
Study of Dehydration of Magnesium Hydroxide
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DOI：
10.1021/j100027a033
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发表时间：
1995-07
期刊：
影响因子：
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通讯作者：
T. Yoshida;Tsunehiro Tanaka;H. Yoshida;T. Funabiki;S. Yoshida;T. Murata
中科院分区：
文献类型：
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作者：
T. Yoshida;Tsunehiro Tanaka;H. Yoshida;T. Funabiki;S. Yoshida;T. Murata
摘要发表于 Advance ACS Abstracts，1995 年 6 月 15 日。0022- 3 654/95/2099- 1 08 90$09,00/0 正如 Terauchi 等人的报告所述，8 Le.，尽管氧原子的空位随着脱水而增加，但 Mg(OH)2 的晶体结构在脱水至 68% 时仍保持不变。另一方面，Anderson和Horlock9通过使用光学显微镜观察了Mg(OH)z-aO的外晶面和内部区域，发现细晶更多地形成在外表面而不是内区域。他们得出结论，MgO 的结晶是从氢氧化物晶体的周边向中心进行的。他们论文中显示的照片表明在脱水初期形成了 MgO 相。 MgO晶体生长的机理也通过动力学研究进行了研究，但报道的结果彼此不一致。 Gregg等人报道了MgO的形成过程是由收缩球形界面的运动控制的，而Anderson和Horlock9则提出了二维界面反应。另一方面，Zhabrova 等人
Abstract published in Advance ACS Abstracts, June 15, 1995. 0022- 3 654/95/2099- 1 08 90$09,00/0 as that of the report by Terauchi et a1.,8 Le., crystal structure Mg(OH)2 is maintained up to 68% dehydration although the vacancies of oxygen atoms increase with dehydration. On the other hand, Anderson and Horlock9 observed both the outer crystal face and the inner zone of the Mg(OH)z-aO, by using an optical microscope and found that fine crystallites were formed more predominantly in the outer face than in the inner zone. They concluded that the crystallization of MgO proceeds from the perimeter to the center of hydroxide crystal. The photographs shown in their paper suggest the formation of MgO phase in the initial period of dehydration. The mechanism of the crystal growth of MgO has been also investigated with kinetics studies, but the reported results were not consistent with each other. Gregg et al.I3 reported that the formation process of MgO is controlled by the movement of a contracting spherical interface, while Anderson and Horlock9 proposed a two-dimensional interface reaction. On the other hand, Zhabrova et