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HomeMaterials Science ForumMaterials Science Forum Vol. 793Synthesis of Synthetic Hematite with Substituted...

Synthesis of Synthetic Hematite with Substituted Aluminum by Sol-Gel Method

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Abstract:

In this work, synthetic hematite with isomorphically substituted aluminum contents were obtained by the sol-gel chemical synthesis. Nanomaterials with Fe and Al contains were obtained by the sol-gel method mixing stoichiometric mixtures of ferric chloride (FeCl₃) and aluminum isopropoxide Al (OC₃H₇)₃ at 75°C. The obtained sol-gel was dried at 60 oC followed by calcinations at 400, 800 and 1100 oC. The resulting powders were characterized by X-Ray diffraction and Scanning Electron Microscopy (SEM). Preliminary results showed α-Fe₂O₃ particles into amorphous Al-O-Fe structure, and the formation of alumina with sintering temperature. SEM characterization results, showed small size particle formation in the order of 100-200 nm, however nanosize particles could be improve by chemical parameters control and ultrasonic dispersion. Also SEM observation showed the formation and homogenous distribution of minority Fe-O phase particles between Al-O-Fe phase particles.

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Periodical:

Materials Science Forum (Volume 793)

Pages:

119-125

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.793.119

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Online since:

May 2014

Authors:

Georgina Carbajal*, N.N. Zurita-Mendez, M.A. Espinosa-Medina, A.B. Martinez-Valencia, A. Sanchez-Castillo

Keywords:

DSC/TG Analysis, Hematite, SEM Characterization, Sol Gel Synthesis, X-Ray Diffraction (XRD)

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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