摘要
制备了摩尔投料比Mg/Al为3的碳酸根型水滑石,用X 射线、红外光谱对水滑石进行了表征.研究了镁铝水滑石对NOx的吸附和解吸行为.结果发现,Mg3Al水滑石对氮氧化物的吸附容量为1398.2mg/g,吸附性能优于活性炭.吸附饱和后的水滑石采用热分解再生,重复使用3次,吸附容量无明显变化.
Carbonate pillared magnesium aluminium hydrotalcite with molar ratio of MgtoAl of 3 was synthesized and characterized by Xray diffraction(XRD) and infrared spectra (IR). Adsorption and desorption of the magnesium aluminium hydrotalcite on NOx were studied. The results showed that adsorption capacity of the hydrotalcite for NOx was 1398.2 mg/g and was better than activated carbon's. MgAl hydrotalcites had not much difference in adsorption efficiency in three cycles when they were regenerated by thermal decomposition method.
出处
《科技通报》
北大核心
2003年第4期330-333,共4页
Bulletin of Science and Technology
关键词
无机化学
镁铝水滑石
氮氧化物
吸附
再生
inorganic chemistry
magnesium aluminium hydrotalcite
nitrogen oxides
adsorption
regeneration
