THE THERMAL-DECOMPOSITION OF MAGNESIUM ALCOHOLATES TO MAGNESIA (MGO) - STUDIES BY IR AND THERMAL-ANALYSIS

Citation
H. Thoms et al., THE THERMAL-DECOMPOSITION OF MAGNESIUM ALCOHOLATES TO MAGNESIA (MGO) - STUDIES BY IR AND THERMAL-ANALYSIS, Solid state ionics, 101, 1997, pp. 79-84
Citations number
11
Journal title
ISSN journal
01672738
Volume
101
Year of publication
1997
Part
1
Pages
79 - 84
Database
ISI
SICI code
0167-2738(1997)101:<79:TTOMAT>2.0.ZU;2-F
Abstract
The thermal behaviour of magnesium-n-alcoholates, branched magnesium a lcoholates and magnesium diolates on the way to MgO was studied by IR- spectroscopy and thermal analysis. The covalent character of the Mg-O bond increases with increasing length of the alcoholates and diolates. The studied magnesium alcoholates and diolates decompose in air or ox ygen atmosphere via alkoxy/hydroxy species. Thermal analysis shows tha t alcoholates and diolates decompose to MgO in a similar way; in the f irst TG-steps mostly hydrocarbon fragments are eliminated from the sam ples, the next TG-steps show mostly water and carbon dioxide as gaseou s reaction products. The final decomposition temperature to MgO also i ncreases with increasing length of the carbon chain of the alcoholates and diolates.