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
收藏
页码：287 / 294
页数：8
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