The rapid precipitation of magnesium hydroxide from aqueous solutions: Analysis of nucleation and crystal growth kinetics, final nucleus numbers and primary crystal sizes

Packter, A.

doi:10.1002/crat.2170200307

Cited by 16 publications

(8 citation statements)

References 13 publications

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“…Magnesium hydroxide production from a highly concentrated solution represents an example of an extremely fast crystallization process. Many studies dealt with the characterization of the crystallization kinetics of Mg(OH)2 [20][21][22][23][24]. Different experimental apparatuses were used, e.g.…”

Section: Introductionmentioning

confidence: 99%

Analysis of particles size distributions in Mg(OH)2 precipitation from highly concentrated MgCl2 solutions

et al. 2022

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Magnesium is a raw material of great importance, which attracted increasing interest in the last years. A promising route is to recover magnesium in the form of Magnesium Hydroxide via precipitation from highly concentrated Mg 2+ resources, e.g. industrial or natural brines and bitterns. Several production methods and characterization procedures have been presented in the literature reporting a broad variety of Mg(OH)2 particle sizes. In the present work, a detailed experimental investigation is aiming to shed light on the characteristics of produced Mg(OH)2 particles and their dependence upon the reacting conditions. To this purpose, two T-shaped mixers were employed to tune and control the degree of homogenization of reactants. Particles were analysed by laser static light scattering with and without an anti-agglomerant treatment based on ultrasounds and addition of a dispersant. Zeta potential measurements were also carried out to further assess Mg(OH)2 suspension stability.

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Section: Introductionmentioning

confidence: 99%

Analysis of particles size distributions in Mg(OH)2 precipitation from highly concentrated MgCl2 solutions

et al. 2022

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“…MH can be obtained by several methods , i.e. hydration of magnesium oxide (MgO) , precipitation of a magnesium salt with an alkaline solution and electrolysis of an aqueous magnesium salt solution. Industrial production of magnesium hydroxide for flue gas desulphurization is mainly driven by the first method.…”

Section: Introductionmentioning

confidence: 99%

Morphology analysis of magnesium hydroxide prepared by magnesium oxide hydration within seawater

Tang

Guo

Liu

et al. 2015

Crystal Research and Technology

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In order to investigate the microstructure of magnesium oxide hydration product within seawater, two reaction conditions (liquid-solid and gas-liquid-solid) and two solutions (seawater and deionized water) were adopted for magnesium oxide hydration. The characterization of the hydration product using X-Ray diffraction and scanning electron microscope was performed. Experimental results indicate that cations and anions in seawater promote the hydration. Most of the hydration products within seawater system display flower-like morphology, but the agglomeration phenomenon is not obvious within deionized water system, especially for the supernatant layer products within deionized water system under gas-liquid-solid reaction condition. There was no stratification phenomenon occurred when MgO hydrated with seawater under three-phase reaction condition.

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“…hydration of magnesium oxide MgO, [22,23], precipitation of a magnesium salt with an alkaline solution [24][25][26][27], electrolysis of an aqueous magnesium salt solution. Industrial production of magnesium hydroxide is mainly driven by the two first methods [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Morphological study of magnesium hydroxide nanoparticles precipitated in dilute aqueous solution

Henrist

Mathieu

Vogels

et al. 2003

Journal of Crystal Growth

336

216

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Among other applications, magnesium hydroxide is commonly used as a flame-retardant filler in composite materials, as well as a precursor for magnesium oxide refractory ceramic. The microstructure of the powder is of prime importance in both technical applications. The influence of synthesis parameters on the morphological characteristics of magnesium hydroxide nanoparticles precipitated in dilute aqueous medium was studied. Several parameters were envisaged such as chemical nature of the base precipitant, type of counter-ion, temperature and hydrothermal treatment. Special attention was given to the obtaining of platelet-shaped, nanometric and de-agglomerated powders. The powders were characterized in terms of particle size distribution, crystal habits, morphology and ability to be redispersed in water. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption and laser diffusion analyses were used for this purpose. r

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The rapid precipitation of magnesium hydroxide from aqueous solutions: Analysis of nucleation and crystal growth kinetics, final nucleus numbers and primary crystal sizes

Cited by 16 publications

References 13 publications

Analysis of particles size distributions in Mg(OH)2 precipitation from highly concentrated MgCl2 solutions

Analysis of particles size distributions in Mg(OH)2 precipitation from highly concentrated MgCl2 solutions

Morphology analysis of magnesium hydroxide prepared by magnesium oxide hydration within seawater

Morphological study of magnesium hydroxide nanoparticles precipitated in dilute aqueous solution

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