Cation exchange dynamics confined in a synthetic clay mineral

被引：0
|
作者：
G. Grassi
L. Michels
Z. Rozynek
M. A. S. Altoé
E. C. dos Santos
C. L. S. da Fonseca
R. Droppa
A. Gholamipour-Shirazi
J. O. Fossum
G. J. da Silva
机构：
[1] Universidade de Brasília,Instituto de Física
[2] Norwegian University of Science and Technology,Department of Physics
[3] Polish Academy of Sciences,Institute of Physical Chemistry
[4] Universidade Federal do ABC,Laboratório de Microhidrodinâmica e Escoamento em Meios Porosos, Department of Mechanical Engineering
[5] Pontifícia Universidade Católica do Rio de Janeiro,Centro de Componentes Semicondutores
[6] Universidade Estadual de Campinas,undefined
来源：
The European Physical Journal Special Topics | 2014年 / 223卷
关键词：
Clay Mineral; Cation Exchange; European Physical Journal Special Topic; Energy Dispersive Spectroscopy; Small Angle XRay Scattering;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work we report X-Ray Diffraction (XRD) and Energy Dispersive X-Ray Spectroscopy (EDS) measurements to investigate the confined cation exchange process in saline aqueous suspensions of a synthetic clay mineral from Lithium-Fluorohectorite to Nickel-Fluorohectorite, as well as the reverse process from Nickel-Fluorohectorite to Lithium-Fluorohectorite and also from Lithium-Fluorohectorite to Sodium-Fluorohectorite. The dynamics of these cation exchanges was followed and it was observed that these processes can be faster than 1 minute. The results are compared to the observations on samples prepared by cation exchange procedures for which the exchange process was performed on the time-scale of months.
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页码：1883 / 1893
页数：10
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