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硝酸根型镁铁水滑石的合成及其离子交换性能研究
Preparation and anion-exchange of MgFe-NO-3 layered double hydroxides
【摘要】 采用共沉淀法合成出了层间阴离子为NO-3的镁铁水滑石(MgFe-NO3-LDHs),当滴料终点pH值为9.5,反应温度为100℃,反应时间为4h时,可得到晶体结构规整的层状结构产物。通过离子交换将有机阴离子CH2CHC6H4SO-3和CH3(CH2)11SO-3引入层间,形成以双分子层垂直于层板的交错有序的排布结构模式。
【Abstract】 The layered double hydroxides containing Mg2+ and Fe3+ in the brucite-like layers and interlayer nitrate ions with n (Mg2+)∶ n (Fe3+)=4 were prepared through coprecipitation.When the pH value of dripping end-point is 9.5,and reaction took 4 h at 100℃,the interlayer nitrate ions may be replaced by either vinylbenzenesulfonate or dodecyl sulfonate ions suggesting that these materials may be useful precursors to MgFe-LDHs intercalated with a variety of organic anions.
【关键词】 镁铁水滑石;
硝酸根离子;
合成;
离子交换;
【Key words】 magnesium-iron layered double hydroxides; nitrate; preparation; anion-exchange;
【Key words】 magnesium-iron layered double hydroxides; nitrate; preparation; anion-exchange;
【基金】 国家自然科学基金资助项目(20371006)
- 【文献出处】 现代化工 ,Modern Chemical Industry , 编辑部邮箱 ,2004年03期
- 【分类号】O647.3
- 【被引频次】21
- 【下载频次】502