Hydrothermal synthesis of Mg-Al hydrotalcites by urea hydrolysis

被引：159

作者：

Rao, MM ^{[1
]}

Reddy, BR ^{[1
]}

Jayalakshmi, M ^{[1
]}

Jaya, VS ^{[1
]}

Sridhar, B ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Inorgan Chem Div, Hyderabad 500007, Andhra Pradesh, India

来源：

MATERIALS RESEARCH BULLETIN | 2005年 / 40卷 / 02期

关键词：

layered compounds; chemical synthesis; infrared spectroscopy;

D O I：

10.1016/j.materresbull.2004.10.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a simple method to prepare hydrotalcites involving both urea hydrolysis and hydrothermal synthetic conditions. Out of a series of Mg/Al ratios tried, pure hydrotalcite like phase was obtained for Mg/Al ratios of 1: 1 and 2:1. Unlike in conventional co-precipitation method we succeeded in preparing Mg/Al ratio of 1: 1 by this route. The high temperature (180 degreesC) applied and pressure developed in the autoclave during the synthesis might have altered the topochemical transformation. The materials were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared, thermo gravimetric and differential thermal analysis and transmission electron microscopy. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：347 / 359

页数：13

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