用水热法合成了一种新型无机离子交换材料。XRD,IR,TGA-DTA,SEM-EDX,孔结构测定和元素分析等表征研究揭示:产物为多孔晶态硫化铟(经验分子式为:[In10.5S14.5]·[(H2NCH2 CH2-NHCH2)2]2.5);有较高热稳定性;模板剂三乙烯四胺填充于材料构槊的空隙或孔道中,同时起平衡材料整体构架电荷的作用。离子交换试验结果表明,合成产物在较大的酸度范围内(pH=4~[H^+]=lmol/dm’)对Cs’保持稳定的交换能力,最大交换容量为:0.31retool/g。
A new inorganic ion exchanger was synthesized using hydrothermal method for the purpose of separation of Ca^+ from HLLW. The characterization of as-synthesized material was performed by XRD, IR, TGA- DTA,SEM -EDX,determination for porous structure and elemental analysis. The results suggest that the product is a porous crystalline indium sulphide with higher thermal stability, the probable formula of the compound is [In10.5S14.5]·[(H2NCH2 CH2-NHCH2)2]2.5), and in the mean time, triethylenetetramine has filled in holes and cavities of the porous resultant as template and balanced the charges of the framework. Ion-exchanging tests show that the newly synthesized exchanger keeps stable capability for extracting Cs from test solution in a wider acidic range from pH = 4 to [ H^+ ] = lmol/dm^3, the maximum ion exchange capacity is 0.3 1mmol/g under the testing condition.