水热合成地聚合物材料及其吸附性能研究  

Hydrothermal synthesis of geopolymer and study on adsorption performance thereof

作　　者：陈益兰[1] 刘承伟[1] 唐婕[1] 

机构地区：[1]广西大学,广西南宁530004

出　　处：《无机盐工业》2010年第11期17-19,共3页Inorganic Chemicals Industry

基　　金：广西自然科学基金项目(2010GXNSFC013001)

摘　　要：以偏高岭土和粉煤灰为原料,采用水热合成法制备偏高岭土-粉煤灰基地聚合物材料,通过XRD对材料进行了表征,研究吸附时间、初始浓度和溶液pH对所得材料吸附性能的影响。结果表明,分别以氢氧化钠或水玻璃作为碱性催化剂,在180℃、保温12 h水热反应条件下制备的地聚合物材料对Sr2+,Co2+,Cs+具有良好的吸附性能,但不同催化剂作用下所制得的材料对这3种离子的吸附性能有所差异。吸附实验表明,该地聚合物材料在核废料处理等环境保护方面具有很好的应用价值。Geopolymers were preparad from metakaolin and fly ash by hydrothermal method.Product was characterized by XRD.Effects of absorption time,initial concentration,and pH on absorption performance of geopolymer were investigated.Experiment results showed that geopolymers,prepared from metakaolin and fly ash by hydrothmal method at 180 ℃ curing for 12 h,with sodium hydroxide and sodium silicate as the alkaline activators respectively,had strong absorbability to Sr^2＋,Co^2＋,and Cs^＋,and absorbability of geopolymers depended on activators.Results indicated：geopolymers can possess good application value in nuclear waste disposal and other terms of environmental protection.

关 键 词：地聚合物 水热合成法 氢氧化钠 核废料处理 

分 类 号：TQ131.12[化学工程—无机化工]