摘要
研究了焙烧活化、酸活化、氯化钠活化、溴化十六烷基三甲铵活化等改性方法对膨润土阳离子交换容量的影响。结果表明,450℃焙烧2 h,膨润土阳离子交换容量可提高30%以上,0.01 mol.L-1氯化钠和0.3 mol.L-1溴化十六烷基三甲铵活化处理均可使膨润土阳离子交换容量提高10%以上,0.1 mol.L-1盐酸活化处理对提高膨润土的阳离子交换容量效果不明显,还深入讨论了改性提高澎润土阳离子交换容量的机理。
This paper studied the cation-exchange capacity（CEC） of bentonites which have been treated with different methods and different substances. The results indicate that the CEC can increase 30% when bentonite is heated at 450 ℃ for 2 h. In addition,CEC of bentonites treated with 0.01 mol ·L^-1 NaCl or 0.3 mol ·L^-1 CTMAB can increas 10% ,but the CEC of bentonite treated with 0. 1 mol ·L^-1 HCl improves little. The mechanism of improving bentonite＇s CEC by modification were discussed and analysed in detail.
出处
《地球科学与环境学报》
CAS
2005年第3期30-32,共3页
Journal of Earth Sciences and Environment
关键词
膨润土
改性
氯化钠
溴化十六烷基三甲铵
阳离子交换容量
bentonite
modifying
sodium chloride
hexadecyltrimethyammonium bromide
cation exchange capacity（CEC）
