A new strategy for synthesis of different varieties of sulphate intercalated zinc-chromium lamellar double hydroxides

被引：7

作者：

Khaldi, M ^{[1
]}

De Roy, A

Chaouch, M

Besse, JP

机构：

[1] Univ Sidi Mohamed Ben Abdellah, Fac Sci, Chim Phys Lab, Dhar El Mehraz, Fes, Morocco

[2] Univ Blaise Pascal, Lab Phys Chim Mat, F-63177 Aubiere, France

来源：

ANNALES DE CHIMIE-SCIENCE DES MATERIAUX | 1998年 / 23卷 / 1-2期

关键词：

D O I：

10.1016/S0151-9107(98)80087-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of zinc-chromium Lamellar Double Hydroxides (LDHs) intercalated by sulfate anions was carried out using three synthetic methods. The combination of coprecipitation and anionic exchange in one stage allows to prepare the well organised [Zn-Cr-SO4] LDHs. Depending on pH conditions and washing process the sulfate intercalated LDH exhibits two 2H hexagonal varieties with different layer spacings d approximate to 8.9 Angstrom and d approximate to 11 Angstrom at room temperature; this latter with superstructure was related to the insertion of the alkaline interlamellar cations.

引用

页码：337 / 340

页数：4

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