摘要
Engel复盐晶体合成对于准确绘制Engel复盐相图及指导实际生产有重要意义。论文研究了低温条件下液相合成Engel复盐晶体的适宜条件,即碳酸氢钾饱和溶液中加入碱式碳酸镁,其重量比39.0 g/0.2 g,在40℃下水热反应10 min;然后反应溶液从40℃冷却降温到25℃进行析晶,析晶过程持续约7.0 h,制备出Engel复盐晶体;对产物进行了XRD及晶体形貌分析,其衍射峰与标准图谱一致,晶体形貌规则,结晶良好。
It was of great importance in plotting the phase diagram of the Engel double salt crystal for the aim to control the production process. The best conditions of synthesis Engel double salt by low temperature liquid synthesis method were studied. The results shown the basic magnesium carbonate was putting the saturated solution of potassium bicarbonate according to the ratio as following： potassium bicarbonate ： basic magnesium carbonate （ wt. ） = 39.0 ： 0.2 and then reacted under the hydrothermal condition as 40 ℃ for 10 min, the mixture solution was crystallized rapidly cooling down to 25 ℃ and water-bathed for 7 h for the crystal growth process , the Engel double salt crystal were synthesized. The crystal was tested by X-ray powder diffraction （XRD）, which proved that it was in agreeing with the standard spectra. The result showed that the crystal＇s morphology was of good crystallization.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第4期567-571,共5页
Journal of Synthetic Crystals
关键词
Engel复盐晶体
低温液相合成
合成条件
Engel double salt crystal
low temperature liquid synthesis method
synthesis conditions
