DTA-TGA AND FTIR SPECTROSCOPIES OF SOL-GEL HYDROTALCITES - ALUMINUM SOURCE EFFECT ON PHYSICOCHEMICAL PROPERTIES

Authors
LOPEZ T BOSCH P ASOMOZA M GOMEZ R RAMOS E
Citation
T. Lopez et al., DTA-TGA AND FTIR SPECTROSCOPIES OF SOL-GEL HYDROTALCITES - ALUMINUM SOURCE EFFECT ON PHYSICOCHEMICAL PROPERTIES, Materials letters, 31(3-6), 1997, pp. 311-316
Citations number
23
Categorie Soggetti
Material Science","Physics, Applied
Journal title
Materials letters → ACNP
ISSN journal
0167577X
Volume
31
Issue
3-6
Year of publication
1997
Pages
311 - 316
Database
ISI
SICI code
0167-577X(1997)31:3-6<311:DAFSOS>2.0.ZU;2-Z
Abstract
Hydrotalcites (crystalline mixed oxides of magnesium and aluminum) wer e 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 char acterized by infrared spectroscopy (FTIR) and thermal analysis (DTA-TG A). It was found that thermal stability depended strongly on aluminum precursor in the following sequence: aluminum chloride > aluminum nitr ate > aluminum sulfate.