| 改性提高膨润土阳离子交换容量研究 |
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| 引用本文： | 李梦耀,王莉平,车红荣.改性提高膨润土阳离子交换容量研究[J].延边大学理工学报,2005,0(3):30-32. |
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| 作者姓名： | 李梦耀 王莉平 车红荣 |
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| 作者单位： | 长安大学环境科学与工程学院,陕西西安710054 |
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| 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2h,膨润土阳离子交换容量可提高30%以上,0.01molL-1
氯化钠和0.3molL-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,
0.1molL-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。
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| 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 |
Study on improving cation-exchange capacity of bentonite by modifying |
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| LI Meng-yao,WANG Li-ping,CHE Hong-rong.Study on improving cation-exchange capacity of bentonite by modifying[J].Journal of Yanbian University (Natural Science),2005,0(3):30-32. |
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| Authors: | LI Meng-yao WANG Li-ping CHE Hong-rong |
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| Affiliation: | School of Environmental Sciences and Engineering, Chang’ an University, Xi’ an 710054,China |
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| Abstract: | This paper studied the cation-exchange capacity(CEC)of bentonites which have been treated with different meth-
ods 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. |
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| Keywords: | bentonite modifying sodium chloride hexadecyltrimethyammonium bromide cation exchange capacity(CEC) |
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