高比表面积SiO_2为基质的含N复合分离材料的制备及其吸附性能  

Preparation and adsorption property of nitrogenous composite separating film based on high surface area silica

作　　者：闻荻江[1] 邹志明[2] 李敏[1] 

机构地区：[1]苏州大学材料与化学化工学部,苏州215021 [2]三明学院化学与生物工程系,三明365004

出　　处：《化工新型材料》2009年第5期93-95,共3页New Chemical Materials

基　　金：福建省自然科学基金计划资助项目(E0610025)

摘　　要：制备了PEI/SiO2复合分离材料,用红外光谱鉴定了其-N基团的存在,用SEM观察了其表面结构,并且用树脂吸附铜离子量来表征了其结合PEI的量。结果表明,复合分离材料对于铜离子的吸附速率很快,在0.5-0.7h就已经达到了饱和,静态最大吸附容量为47.1mg/g树脂;同时树脂具有再生性能,经过10次的解吸-吸附试验后,其吸附容量降至42.5mg/g树脂。The PEI/SiO2 composite chelating resin was prepared. The surface structure and the presence of PEI of the composite chelating resin were characterized with IR and SEM. The combined amount of PEI was measured by the adsorbance of Cu2＋. The results showed that the adsorption velocity of the PEI/SiO2 was very speedy, saturation was achieved in 0. 5-0. 7 hour, the static maximum adsorbance of the composite resin was 47. 1mg/g composite material. It had regeneration capability also, its adsorbance was under 42. 5mg/g composite material through ten times desorption-adsorption experiment.

关 键 词：PEI SIO2 复合分离材料 制备技术 CU2+ 吸附量 

分 类 号：O631.3[理学—高分子化学]