摘要
以天然钠基蒙脱石为原料,按n(总金属阳离子)/m(蒙脱石)=10 mmol/g的比例制备出Fe-Al、Cr-Al和La-Al柱撑蒙脱石;采用化学元素分析、X射线衍射分析、红外光谱分析等手段对柱撑蒙脱石进行表征;并研究3种柱撑蒙脱石对水中Cu2+离子的吸附性能及其影响因素。结果表明:Cr-Al柱撑蒙脱石层间距d(001)由原矿的12.406 1 nm增大到19.764 9 nm,柱撑效果优于Fe-Al和La-Al柱撑蒙脱石,Cr-Al柱撑蒙脱石在60℃、pH值为6、时间为12 h的条件下,使用12.0 g/L的添加量吸附Cu2+离子,去除率最高,吸附效果优于Fe-Al和La-Al柱撑蒙脱石。
Fe-Al,Cr-Al and La-Al pillared montmorillonites were prepared from natural Na-montmorillonite in the proportion of n (total metal cations)/m (montmorillonite) = 10 mmol/g,and characterized by means of chemical element analysis,X-ray diffraction analysis,infrared spectrum analysis,etc. then,the adsorption properties and influencing factors of each pillared montmorillonite to Cu2+ heavy metal ions in water were studied. The results show that the interlayer spacing d (001) of Cr-Al pillared montmorillonite increases from 12.406 1 nm to 19.764 9 nm,and the pillared effect is better than that of Fe-Al and La-Al pillared montmorillonite. At 60 ℃,pH = 6,and 12 h of reaction time,the removal rate of Cu2+ ion is the highest when the amount of 12.0 g/L is added,and the adsorption effect of Cr-Al pillared montmorillonite is better than that of Fe-Al and La-Al pillared montmorillonite.
作者
郭旭颖
邢经纬
付赛欧
姜国亮
董艳荣
GUO Xuying;XING Jingwei;FU Saiou;JIANG Guoliang;DONG Yanrong(College of Science,Liaoning University of Engineering and Technology,Fuxin 123000,China;College of Mining,Liaoning University of Engineering and Technology,Fuxin 123000,China;College of Civil Engineering,Liaoning University of Engineering and Technology,Fuxin 123000,China)
出处
《中国粉体技术》
CAS
CSCD
2020年第5期22-27,共6页
China Powder Science and Technology
基金
国家自然科学基金项目,编号:51304114
41672247
辽宁省科学技术研究资助项目,编号:LJ2017FAL016
关键词
柱撑剂
柱撑蒙脱石
吸附特性
pillared agent
pillared montmorillonite
adsorption properties
