摘要
用表面活性剂十六烷基三甲基氢氧化铵在溶液中形成的液晶相胶态分子团作为模板剂，同时在分子团憎水基团内部导入对乏燃料中钯离子有特效选择萃取效应的协萃剂ＴＯＰＯ－Ｐ２０４，通过表面活性剂亲水基团与易水解的有机硅酸盐阴离子之间的自组织过程，合成了内嵌型介孔分子筛固体吸附剂ＭＣＭ－ＴＰ，经ＴＥＭ，ＸＲＤ，２９Ｓｉ－ＭＡＳＮＭＲ测试，与ＭＣＭ－４１介孔分子筛有相似的孔道结构，但其晶胞参数有所增加，水热稳定性有明显的改善．用于提取乏燃料中的钯，饱和吸附Ｐｄ容量可达０．０１５ｍｍｏｌ／ｇ．
The liquid crystalline phase micell formed from cetyltrimethylammonium hydroxide was used as template with simultaneous introduction of a synergistic extractant TOPOD2EPHA into it. A mesoporous molecular sieve embedded with synergistic extractant MCMTP was obtained. It is formed through the selfassembly process between the hydrophilic groups of the micell and organic silicate anions. The results from TEM, XRD, and 29SiMASNMR showed that the sieve had a similar hexagonal arrangement of uniform mesopores as that of MCM41, but an improved hydrothermal stability with saturation adsorption of 0015 mmol /g.
出处
《应用化学》
CAS
CSCD
北大核心
1997年第6期30-33,共4页
Chinese Journal of Applied Chemistry
基金
工业科学基金
国家"863"计划资助
关键词
乏燃料
钯提取
介孔分子筛
协萃剂
分子筛
spent nuclear fuel,palladium extraction,mesopore molecular sieve,synergistic extractant
