中文摘要：

将一定量的Na2SO4溶液直接加入在60—80℃温度下预处理过的Al13溶液中，然后室温陈化12h，可简便快速地制备具有四面体形貌和纤维状形貌的Al13基硫酸盐晶体。所得晶体的SEM和0S图显示：用本文报道的方法合成的四面体形貌的硫酸盐晶体尺寸大小在150-200μm，而通过滴定方法的却只有15-25μm；纤维状的硫酸盐晶体的长径尺度分别是〉1000μm和0．5-1μm。对四面体形貌的Al13基硫酸盐晶体的生长机理进行了初步探讨。

英文摘要：

Uniform tetrahedral and fiber-like crystalline sulfates of [AlO4Al12（OH）24（H2O）12]^7＋ polyoxocations were synthesized via a direct mixing and aging route. XRD patterns reveal that tetrahedral and fiber-like crystalline Al13 sulfates are cubic and monoclinic structure, respectively. SEM and Optical Scanning （OS） images show that the size of tetrahedral crystalline Al13 sulfates prepared via a direct mixing way is 150-200 μm, which is almost 10 times larger than that via traditional titration way （15-25 μm）. The size of the fiber-like crystalline Al13 sulfates is 0.5~1 I~m in diameter and up to 1 000 μm in length. A possible crystal growth mechanism for the tetra- hedral crystalline Al13 sulfates is discussed.