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Tetraalkylammonium manganese oxide gels: Preparation, structure, and ion-exchange properties

被引：55
作者：
Brock, SL
Sanabria, M
Nair, J
Suib, SL
Ressler, T
机构：
[1] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Chem Engn, Storrs, CT 06269 USA
[3] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
[4] Max Planck Gesell, Fritz Haber Inst, Inst Anorgan Chem, D-14195 Berlin, Germany
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 23期
关键词：
D O I：
10.1021/jp003943r
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The structure and ion-exchange properties of tetraalkylammonium (TAA; alkyl = methyl, ethyl, propyl) manganese oxide gels produced from colloidal manganese oxide solutions are presented. TAA manganese oxide xerogels are analyzed by X-ray powder diffraction (XRD) and extended X-ray absorption fine spectra (EXAFS) and can be modeled on an octahedral layered, pseudohexagonal structure. Ion-exchange reactions are performed with Na+, Mg2+, Ni2+, Cu2+, or La3+ with wet gels and the factors that influence the resulting structure and uptake are described. Exchange of xerogels was accomplished only in the presence of base. Despite variations in the sorption of different ions, the TAA cations are completely and rapidly removed from the structure.
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页码：5404 / 5410
页数：7
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