Synthesis of novel Na-rich mica and selective strontium ion exchange and fixation

被引：10

作者：

Kodama, T

Nagai, S

Hasegawa, K

Shimizu, K

Komarneni, S

机构：

[1] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Niigata 9502181, Japan

[2] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan

[3] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[4] Penn State Univ, Dept Crop Sci, University Pk, PA 16802 USA

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2002年 / 37卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1081/SS-120003052

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel swelling mica of composition, Na-2.94(Mg5.55Ti0.07Fe0.04) (Al2.07Si5.83)O20F4.1.72H(2)O, was synthesized from kaolinite, and this mica was found to be very selective for Sr with a high capacity for uptake. Apparently, both tetrahedral and octahedral sheets contribute to the total negative charge in this mica. A relatively low-temperature heat treatment at 250degreesC of the Sr-exchanged mica resulted in the collapse of the hydrated interlayer spacings of the mica to immobilize strontium in a stable unhydrated phase.

引用

页码：1927 / 1942

页数：16

共 33 条

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