Microstructural characteristics of low-temperature (1400°C) sintered MgO obtained from seawater
The purpose of this study was to investigate the influence of a rinsing of
Mg(OH)2 precipitated from seawater by substoichiometric precipitation (80%
precipitation) and the addition of TiO2 on microstructural characteristics of
the MgO obtained by sintering at low temperature (1400°C). The results of
examination indicate that the method of rinsing of the magnesium hydroxide
precipitate in the technological process of obtaining MgO from seawater
significantly affects the chemical composition of samples, primarily with
regard to the CaO and B2O3 content. The samples were doped with TiO2 to
improve the evaporation of B2O3 and sintering of MgO samples that were
characterized by XRD and SEM/EDS. These techniques confirmed the high purity
of MgO samples obtained and the formation of secondary compounds in very
small quantities that have a positive effect on the densification.
Document Type: Research Article
Affiliations: 1: University of Split, Faculty of Chemistry and Technology, Split, Croatia 2: Rugjer Bošković Institute, Division of Materials Chemistry, Zagreb, Croatia
Publication date: January 1, 2017
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