A composite of layered double hydroxides obtained through random costacking of layers from Mg-Al and Co-Al LDHs by delamination-restacking: Thermal decomposition and reconstruction behavior

被引：35

作者：

Venugopal, B. R.

Shivakumara, C.

Rajamathi, Michael

机构：

[1] St Josephs Coll, Dept Chem, Mat Res Grp, Bangalore 560027, Karnataka, India

[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

SOLID STATE SCIENCES | 2007年 / 9卷 / 3-4期

关键词：

layered double hydroxides; delamination; layered composites; thermal decomposition; reconstruction;

D O I：

10.1016/j.solidstatesciences.2007.01.006

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A composite of dodecylsulfate intercalated Mg-Al and Co-Al LDHs in which the layers of the two LDHs are randomly costacked was prepared starting from the monolayer colloidal dispersions of the individual surfactant intercalated LDHs obtained through delamination in 1-butanol. The surfactant ion of the composite could be exchanged for acetate ions. The thermal decomposition and reconstruction behavior of the acetate-intercalated composite was found to be different from those of an LDH in which each layer contains Mg, Co and Al and a physical mixture of Mg-Al and Co-Al LDHs. While the composite shows partial reconstruction to LDH phase even after heating up to 1000 degrees C the other samples do not show reconstruction beyond 800 degrees C. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：287 / 294

页数：8