中华医学超声杂志

应用化学 ›› 1997, Vol. 0 ›› Issue (6): 30-33.

• 研究论文 • 上一篇    下一篇

内嵌型介孔分子筛的合成

黄锡文, 甄寒菲, 王淑兰, 丛培君, 王榕树   

  1. 天津大学化学工程系, 天津 300072
  • 收稿日期:1997-05-13 修回日期:1997-09-03 出版日期:1997-12-10 发布日期:1997-12-10
  • 基金资助:
    工业科学基金;国家“863”计划资助

Synthesis of Mesopore Molecular Sieve Embedded with Synergistic Extrant

Huang Xiwen, Zhen Hanfei, Wang Shulan, Cong Peijun, Wang Rongshu   

  1. Department of Chemical Engineering, Tianjin University, Tianjin 300072
  • Received:1997-05-13 Revised:1997-09-03 Published:1997-12-10 Online:1997-12-10

PDF

453

被引次数

7

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.

关键词: 乏燃料, 钯提取, 介孔分子筛, 协萃剂

Abstract: The liquid crystalline phase micell formed from cetyltrimethylammonium hydroxide was used as template with simultaneous introduction of a synergistic extractant TOPO-D2EPHA into it. A mesoporous molecular sieve embedded with synergistic extractant MCM-TP was obtained. It is formed through the self-assembly process between the hydrophilic groups of the micell and organic silicate anions. The results from TEM, XRD, and 29Si-MASNMR showed that the sieve had a similar hexagonal arrangement of uniform mesopores as that of MCM-41, but an improved hydrothermal stability with saturation adsorption of 0.015 mmol/g.

Key words: spent nuclear fuel, palladium extraction, mesopore molecular sieve, synergistic extractant

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