硅酸盐通报2017，Vol.36Issue(11)：3581-3586,3594,7.
碱金属掺杂硫酸钙短晶的常压水热法合成与热稳定性分析
Atmospheric Pressure Hydrothermal Synthesis and Thermal Stability Analysis of Alkaline Metal Doped Calcium Sulfate Short Whiskers
摘要
Abstract
Alkaline metal doped calcium sulfate short whiskers were prepared by hydrothermal method in Ca2+,Na+,K+ chloride electrolyte solution,using purified phosphogypsum as raw materials. The crystal morphology,crystal structure,dehydration temperature and growth mechanism of calcium sulfate short whiskers were discussed. The results show that the crystal morphology of hydrothermal products are crystals with L/D ratio between 3-7 in Ca2+,Na+,K+ chloride electrolyte solution. Among them,under the chloride system of Ca2+,Na+,K+,phosphogypsum mostly converts to CaSO4 ·0. 5H2O,Na2 Ca (SO4)6·3H2O(omongwaite),K2Ca(SO4)2·H2O(gorgeyite),the dehydration temperatures of the crystals are respectively about 161. 2 ℃,259. 4 ℃ and 489. 8 ℃. In this paper,the effects of ionic species on the structure and thermal stability of short whiskers were investigated. The conclusions provide reference for gypsum whisker modification and application in plastics.关键词
磷石膏/晶须/晶体结构/热稳定性Key words
phosphogypsum/whisker/crystal structure/thermal stability分类
化学化工引用本文复制引用
黄健,朱杨,黄昊,马保国..碱金属掺杂硫酸钙短晶的常压水热法合成与热稳定性分析[J].硅酸盐通报,2017,36(11):3581-3586,3594,7.基金项目
国家自然科学基金青年基金(51303146) （51303146）
国家十三五重点研发计划(2016YFC0700905-04,2016YFC0700904) （2016YFC0700905-04,2016YFC0700904）
湖北省科技支撑项目(2015BCA247) （2015BCA247）
