Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

XPS Study Calcining Mixtures of Brucite with Titania

Version 1 : Received: 4 April 2022 / Approved: 6 April 2022 / Online: 6 April 2022 (10:49:58 CEST)

A peer-reviewed article of this Preprint also exists.

Sánchez-Zambrano, K.S.; Hernández-Reséndiz, M.; Gómez-Rodríguez, C.; García-Quiñonez, L.V.; Aguilar-Martínez, J.A.; Rodríguez-Castellanos, E.A.; Verdeja, L.F.; Fernández-González, D.; Castillo-Rodríguez, G.A. XPS Study on Calcining Mixtures of Brucite with Titania. Materials 2022, 15, 3117. Sánchez-Zambrano, K.S.; Hernández-Reséndiz, M.; Gómez-Rodríguez, C.; García-Quiñonez, L.V.; Aguilar-Martínez, J.A.; Rodríguez-Castellanos, E.A.; Verdeja, L.F.; Fernández-González, D.; Castillo-Rodríguez, G.A. XPS Study on Calcining Mixtures of Brucite with Titania. Materials 2022, 15, 3117.

Journal reference: Materials 2022, 15, 3117
DOI: 10.3390/ma15093117

Abstract

In this paper, the phases in the Mg-Ti-O system using the 1:1 formulation of MgO:TiO2 mixing synthetic brucite of Mexican origin with TiO2 microparticles of high purity and with a heat treatment at 1100°C for 1 h were studied. The raw materials and formulation by XPS and DRX 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, the formation of vacancies in the crystal lattice during the transformation from hexagonal brucite to magnesia with a cubic structure centered on the faces is estimated. With the results, its thermal behavior is warned based on the MgO-TiO2 phase diagram.

Keywords

brucite; magnesia; titania; Mg(OH)2; MgO; TiO2; XPS; DRX; refractories; ceramics

Subject

MATERIALS SCIENCE, General Materials Science

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