DTA-TGA and FTIR spectroscopies of sol-gel hydrotalcites: Aluminum source effect on physicochemical properties

被引：108

作者：

Lopez, T ^{[1
]}

Bosch, P ^{[1
]}

Asomoza, M ^{[1
]}

Gomez, R ^{[1
]}

Ramos, E ^{[1
]}

机构：

[1] UNIV GUANAJUATO,MEXICO CITY 36000,DF,MEXICO

来源：

MATERIALS LETTERS | 1997年 / 31卷 / 3-6期

关键词：

sol-gel hydrotalcites; sol-gel synthesis; aluminum precursor effect; sol-gel hydrotalcites FTIR spectroscopy; hydrotalcites stability;

D O I：

10.1016/S0167-577X(96)00296-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrotalcites (crystalline mixed oxides of magnesium and aluminum) were synthesized by the sol-gel method at pH 10. The magnesium source was magnesium ethoxide and the aluminum precursors were aluminum nitrate, aluminum chlorate or aluminum sulfate. The resulting solids were characterized by infrared spectroscopy (FTIR) and thermal analysis (DTA-TGA). It was found that thermal stability depended strongly on aluminum precursor in the following sequence: aluminum chloride > aluminum nitrate > aluminum sulfate.

引用

页码：311 / 316

页数：6

共 23 条

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[2]

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[3]

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[4]

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