XPS Study on Calcining Mixtures of Brucite with Titania

In this work, we studied the phases in a Mg-Ti-O system using a 1:1 formulation of MgO:TiO , mixing synthetic brucite of Mexican origin with TiO microparticles of high purity, with a heat treatment at 1100 °C for 1 h. Due to its valence electrons, TiO can contribute to the sintering process to impro...

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Bibliographic Details
Published in:Materials 2022-04, Vol.15 (9), p.3117
Main Authors: Sánchez-Zambrano, Karla Sofía, Hernández-Reséndiz, Marina, Gómez-Rodríguez, Cristian, García-Quiñonez, Linda Viviana, Aguilar-Martínez, Josué Amilcar, Rodríguez-Castellanos, Edén Amaral, Verdeja, Luis Felipe, Fernández-González, Daniel, Castillo-Rodríguez, Guadalupe Alan
Format: Article
Language:English
Subjects:
Aqueous solutions
Brucite
Chemical reactions
Crystal lattices
Cubic lattice
Heat treatment
High temperature
Lattice vacancies
Magnesium hydroxide
Magnesium oxide
Microparticles
Nanoparticles
Oxidation
Phase diagrams
Raw materials
Roasting
Thermodynamic properties
Titanium
Titanium dioxide
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Summary:In this work, we studied the phases in a Mg-Ti-O system using a 1:1 formulation of MgO:TiO , mixing synthetic brucite of Mexican origin with TiO microparticles of high purity, with a heat treatment at 1100 °C for 1 h. Due to its valence electrons, TiO can contribute to the sintering process to improve density in MgO products. The raw materials and formulation by XPS and X-RD techniques were characterized. The results demonstrate the presence of different oxidation states in titania and the formation of different oxides in the Mg-Ti-O system when mixed and calcined at 1100 °C; additionally, we estimated the formation of vacancies in the crystal lattice during the transformation from hexagonal brucite to magnesia with a cubic structure centered on the faces. Its thermal behavior is indicated by the MgO-TiO phase diagram.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15093117