Primary Study on Capturing Behavior for Transition Metal Ions on Mesoporous Silicate (MCM-41)
Primary Study on Capturing Behavior for Transition Metal Ions on Mesoporous Silicate (MCM-41)
复制标题
介孔硅酸盐（MCM-41）对过渡金属离子捕获行为的初步研究
DOI：
10.5182/jaie.14.supplement_173
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Komatsu
中科院分区：
文献类型：
--
作者：
A. Hokura;I. Nakai;H. Yamada;A. O’Connor;J. Perera;G. Stevens;Y. Komatsu
以水玻璃溶液和十六烷基三甲基溴化铵为原料合成了介孔硅酸盐（MCM-41）。MCM-41对过渡金属离子（钴、镍、铜或锌）与乙酰丙酮的捕获行为进行了实验，以评估MCM-41作为选择性捕获材料的潜力。通过ICP-AES分析的金属离子初始浓度减去最终浓度，计算MCM-41上捕获的金属离子的量。在铜的情况下，通过添加乙酰丙酮来增加捕获的金属离子的数量。利用x射线吸收近边结构（XANES）分析了MCM-41上捕获的铜的化学状态。在pH值为5.9时，乙酰丙酮从溶液中捕获的金属离子的数量依次为：倪< < <铜<锌。这些结果证明了MCM-41作为选择性捕获材料的潜力。
The mesoporous silicate (MCM-41) was synthesized from sodium silicate solution and cetyltrimethylammonium bromide. Experiments about capturing behavior of MCM-41 for transition metal ions (cobalt, nickel, copper, or zinc) with acetylacetone have been conducted to assess the potential of MCM-41 as selective capturing materials. The amount of captured metal ions on MCM-41 was calculated by subtracting the final concentration from the initial concentration of metal ions analyzed by ICP-AES. In the case of copper, the amount of captured metal ions was increased by addition of acetylacetone. The chemical state of copper captured on MCM-41 was estimated by X-ray absorption near edge structure (XANES) analysis. The amount of metal ions captured with acetylacetone from the solution at pH 5.9 was found in the following order; Ni<Co<<Cu<Zn. These results demonstrated the potential of MCM-41 as selective capturing materials.