In 1701, M. B. Valentine prepared “heavy” magnesium carbonate from mother liquors obtained in the manufacture of potassium nitrate. Magnesia was confused with lime until 1754 when J. Black showed that the two substances were entirely different. Deposits of natural magnesium carbonate were discovere...
These reactants were then separately dissolved in deionized water in beakers using a magnetic stirrer. Subsequently, the Ca nitrate and Mg nitrate solutions were added to each other sequentially. Mg ion exchange was performed by reducing the amount of Ca ions to maintain the Ca/P stoichiometry....
we synthesized the CaF2:Yb/Er upconversion nanoparticles. Analytical grade CaCl2·6H2O, Yb(NO3)3·5H2O and Er(NO3)3·6H2O were dissolved in 10 mL deionized water to obtain a mixed solution of 10 mmol according to a molar ratio of Ca:...
Donat Mg mineral water brand has high concentrations of magnesium (1.1 g/l) and sulphate (2.2 g/l) which results in a distinctive Mg–Na–HCO3–SO4/CO2water type (Lapanje,2006). Total dissolved solids are between 12 and 14 g/l and gaseous CO2in water is between 2 and 40 g/l (Nos...
through mass loss. The synthesized HAU, Mg-HAU, and Zn-HAU were incubated with water at 10 min times intervals of up to 100 min. The difference between the residual mass and effective initial mass was considered for the total urea loss from nanohybrids calculated by the following equation: ...
(iii) the addition of calcium or phosphate ions either pre-dissolved in the liquid phase or as highly soluble salt (common ion effect: the higher the concentration, the shorter the setting time), (iv) the addition of seed materials, which act as crystal nuclei (the more nuclei, the ...
Sodium hydroxide (NaOH, 98.0%), iron (III) nitrate nonahydrate (99.99%) and magnesium nitrate hexahydrate (99.99%) were acquired from Sigma Aldrich (Missouri, USA). The preparation of all aqueous solutions in the present work was performed with deionized water (DIW) which has a conductivity of...
Magnesium phosphate (MP) was synthesized using chemical precipitation. Magnesium nitrate [Mg(NO3)2·6H2O, Sinopharm Chemical Reagent Co., Ltd.] and ammonium dihydrogen phosphate (NH4H2PO4, Sinopharm Chemical Reagent Co., Ltd.) were dissolved in deionized water, and the Mg(NO3)2·6H2O solution...
In situ formation of layered double hydroxides (LDH) on metallic surfaces has recently been considered a promising approach for protective conversion surface treatments for Al and Mg alloys. In the case of Mg-based substrates, the formation of LDH on the
This band was not present in the final sample due to the fact that in the bonding process, the nitrate anion was removed from the LDH interlayers. The shifts occurred in bond absorption is as a result of bonding that took place between the guest and the host. On the other hand, an H...