Thermal
decomposition of some metal-organic precursors |
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Authors: | M Ştefănescu O Ştefănescu M Stoia C Lazau |
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Institution: | 1.Faculty of Industrial
Chemistry and Environmental Engineering,University ‘Politehnica’
of Timi?oara,Timi?oara,Romania;2.National Institute of Condensed
Materials Research,Timi?oara,Romania |
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Abstract: | In this
paper we present a study on the synthesis of Fe(III) oxide, by thermal decomposition
of some complex combinations of Fe(III) with carboxylate type ligands, obtained
in the redox reaction between some polyols (ethylene glycol (EG), 1,2-propane
diol (1,2PG), 1,3-propane diol (1,3PG) and glycerol (GL)) and NO3
–
ions (from ferric nitrate). Fe2O3
was obtained by thermal decomposition of the synthesized metal-organic precursors
at low temperatures. γ-Fe2O3
was obtained as nanoparticles at 300°C, while at higher temperatures α-Fe2O3
starts to crystallize and becomes single phase at ~500°C.
The
formation of the metal-organic precursors and their thermal decomposition
were studied by thermal analysis and FTIR spectroscopy. |
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Keywords: | |
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