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通过特殊的化学制筛手段 ,经铯离子的嵌入、固位、抽出等反应 ,成功地研制了对铯离子有高效选择性的新型环保材料提铯离子筛 ,并通过正交实验得到了它的最佳制备条件。对提铯离子筛的性能研究表明 ,它不但继承了其基体对铯离子较大的交换容量 1.83mmol/ g左右 ,而且其对铯离子的分配系数达到 45 0 0 0mL/ g ,约为基体的 3倍。在与模拟高放废液的静态交换中 ,此提铯离子筛在众多金属杂离子中有选择地提取 96 %左右的铯离子 ,基本上达到了从高放废液中去除和回收铯13 7Cs的要求。
Through a special chemical sieving method, a new type of environmental protection material cesium ion sieve with high selectivity to cesium ion has been successfully prepared through the reaction of cesium ion embedding, retention and extraction, and it has been obtained through orthogonal experiment The best preparation conditions. The study of the performance of the cesium ion sieve showed that it not only inherited the larger exchange capacity of its substrate to cesium ion of about 1.83mmol / g, but also its cesium ion partition coefficient of 45 0 0 0mL / g, which was about matrix 3 times. In static exchange with simulated high-level liquid waste, the cesium ion sieve selectively extracted about 96% of the cesium ions in a large number of metal heteroatoms, basically to remove and recover cesium 13 7Cs from the high-level liquid waste Request.