硅酸盐学报2008，Vol.36Issue(9)：1310-1314,5.
不同热解条件对碱式碳酸镁晶体形貌的影响
EFFECT OF DIFFERENT PYROGENATION CONDITIONS ON CRYSTAL MORPHOLOGY OF BASIC MAGNESIUM CARBONATE
张黎黎 1刘家祥 1李敏1
作者信息
- 1. 北京化工大学材料科学与工程学院,化工资源有效利用围家重点实验室,北京,100029
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摘要
Abstract
Basic magnesium carbonate (χMgCO3·Mg(OH)2·yH2O) was prepared by double carbonation under normal pressure. Raw material was obtained from light-burned dolomite powder. The influences of different pyrogenation temperatures and different addi-tives on the crystal morphology of basic magnesium carbonate were studied in order to improve its filling and dispersion. The results indicate that rod-like basic magnesium carbonate can be prepared at 50℃, and the length is 36-88μm, the section diameter is about 2μm. Flaky and roseleaf-shaped basic magnesium carbonate can be prepared at 60℃. Spheric basic magnesium carbonate can be pre-pared at 70℃, and the diameter is about 40μm. In addition, sodium citrate can improve the uniformity of the grain distribution at 50℃. Ethanol can reduce the length-to-diameter ratio at 50℃. Magnesium chloride can increase the crystal length to 115μm and the section diameter to 18μm at 50℃.关键词
碱式碳酸镁/晶体形貌/热解温度/添加剂Key words
basic magnesium carbonate/crystal morphology/pyrogenation temperature/additive引用本文复制引用
张黎黎,刘家祥,李敏..不同热解条件对碱式碳酸镁晶体形貌的影响[J].硅酸盐学报,2008,36(9):1310-1314,5.
