文献类型：期刊文献

英文题名：Preparation of strontium chloride hexahydrate by batch-cooling crystallization: Control of crystal size and morphology

作者：Qian, Yuanyuan[1];Lu, Guimin[1];Sun, Yuzhu[1];Song, Xingfu[1];Yu, Jianguo[1]

机构：[1]E China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2014

卷号：49

期号：11

起止页码：878

外文期刊名：CRYSTAL RESEARCH AND TECHNOLOGY

收录：;EI(收录号：20144900275663);WOS:【SCI-EXPANDED(收录号:WOS:000344917400007)】；

基金：This work was financially supported by the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：strontium hexahydrate; morphology control; batch-cooling crystallization

摘要：The effects of initial supersaturation, cooling rate, and stirring rate on the morphology of strontium chloride hexahydrate (SrCl26H2O) crystals were investigated by batch-cooling crystallization, providing optimal operating conditions. Uniform needle-like crystals with a length of 1200.50m and a width of 100.92m on average were obtained. The corresponding aspect ratio of length to width was about 11.90. Moreover, the morphological modification of SrCl26H2O crystals using cetyltrimethylammonium chloride (CTAC) was studied. When 20.30 mmol center dot L-1 of CTAC was added, the length and width of crystals were 792.71m and 233.25m, respectively, and the corresponding aspect ratio decreased to 3.40. The shape of SrCl26H2O crystal changed to granule-like, probably because of the strong interaction of CTAC with the SrCl26H2O facets with a denser distribution of Cl- ions. This study offers a simple, flexible, and highly efficient approach to regulate the morphology of SrCl26H2O crystals and opportunities for multiple applications of SrCl26H2O.