Synthesis of High-purity Vaterite from Calcium Sulfate and Ammonium Carbonate

被引：2
|
作者：
Zhao, Jingcai [1 ]
Song, Xingfu [1 ]
Sun, Ze [1 ]
Chen, Bo [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
来源：
CHEMISTRY LETTERS | 2014年 / 43卷 / 10期
基金：
国家高技术研究发展计划(863计划);
关键词：
PRECIPITATION; CRYSTALLIZATION; TRANSFORMATION; CACO3;
D O I：
10.1246/cl.140498
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
High-purity calcium carbonate of vaterite type was directly obtained from calcium sulfate and ammonium carbonate in ammonium sulfate matrix. This matrix can successfully break the limitations of reactant concentration, temperature, and stirring speed on vaterite. An orthogonal experiment combined with back propagation neural network was then performed to optimize the impurity in vaterite. Under the optimum conditions, 99.9% vaterite was obtained.
引用
收藏
页码：1668 / 1670
页数：3
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