XRD and HRTEM Evidence for Fixation of Cesium Ions in Vermiculite Clay

被引：110

作者：

Kogure, Toshihiro ^{[2
]}

Morimoto, Kazuya ^{[3
]}

Tamura, Kenji ^{[4
]}

Sato, Hisako ^{[3
]}

Yamagishi, Akihiko ^{[1
]}

机构：

[1] Toho Univ, Fac Sci, Dept Chem, Funabashi, Chiba 2748510, Japan

[2] Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo 1130033, Japan

[3] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

[4] Natl Inst Mat Sci, Environm & Energy Mat Div, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMISTRY LETTERS | 2012年 / 41卷 / 04期

关键词：

MINERALS; POTASSIUM; EXCHANGE; SORPTION; ILLITE; SOILS; WATER;

D O I：

10.1246/cl.2012.380

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

X-ray diffraction and high-resolution transmission electron microscopy showed that cesium ions (Cs+'s) in a vermiculite clay formed a segregated monoionic layer in the interlayer spaces. Each ion was fixed simultaneously at the centers of hexagonal rings in the upper and lower silicate tetrahedral sheets. No Cs+ was eluted even when Cs+-vermiculite was kept at 80 degrees C for 48 h in the presence of a large excess of Al(NO3)(3) or [Co(NH3)(6)]Cl-3.

引用

页码：380 / 382

页数：3

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