Controlled precipitation of nesquehonite (MgCO3·3H2O) by the reaction of MgCl2 with (NH4)2CO3

Mineralogical and Spectroscopic Study of Nesquehonite Synthesized by Reaction of Gaseous Co2 With Mg Chloride Solution

“…Within the chains, CO3 groups link three MgO6 octahedra by one edge and two common corners. The Mg atoms are in a distorted coordination, and each atom is coordinated by two H2O ligands; one free H2O molecule is located between the chains as shown in Figure 2 (Wang et al, 2008;Ferrini et al, 2009;Ballirano et al, 2009;Giester et al, 2000;Moore et al, 2015;Stephan and McGillavry, 1972). In Greece, natural nesquehonite has been reported in Lavrion (Giester et al, 2000).…”

Synthesis of nesquehonite by reaction of gaseous CO2 with Mg chloride solution: Its potential role in the sequestration of carbon dioxide

“…Here, we present data on experimental synthesis of nesquehonite, the full characterization of the solid product, necessary to confirm that the synthetic nesquehonite obtained in our experiments behaves in the same way as natural nesquehonite and the synthetic analogue, as reported in previous papers, and finally, its potential application to the problem. Various procedures for the synthesis of nesquehonite have been documented over the last century [25][26][27][28][29][30][31]. However, the differences between the methods cited and the one described in this study involve the source of CO 2 , as those methods generally make use of solid carbonates as the source of carbon dioxide, or the source of Mg for the aqueous solution.…”

Magnesium-Based Sacrificial Anode Cathodic Protection Coatings (Mg-Rich Primers) for Aluminum Alloys

“…XRD and FTIR data also validated the formation of magnesium hydroxide on Mg-rich primers in the salt-spray chamber. On the other hand, SEM micrographs of free primer films exposed to natural weathering showed the presence of needle-like crystals reported for magnesium carbonate by several authors [22,68,69]. …”