Phase Equilibria and Thermodynamic Properties in the Zinc Chloride–Zinc Methanesulfonate–Water System

Novikov, Artem A.; Belova, Ekaterina V.; Uspenskaya, I. A.

doi:10.1021/acs.jced.9b00292

Cited by 8 publications

(1 citation statement)

References 32 publications

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“…As strong dissolving ability and high density characteristics have been revealed, the basis and possibility for preparing a saturated brine drilling fluid were proved. Since the methanesulfonate-containing mixture is environmentally safer than the halide solution, the phase equilibrium of the ternary system ZnCl 2 −Zn(CH 3 SO 3 ) 2 −H 2 O was carried out at 262.35 and 298.15 K. 13 Based on the statistics and evaluation of the experimental density data of each electrolyte in an aqueous solvent, the Laliberte model for calculating the density of the aqueous electrolyte solution was developed, which involves the parameters of 59 single electrolytes. This model results in a good performance of predicting the density of a single salt solution in the experiment.…”

Section: Introductionmentioning

confidence: 99%

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K

et al. 2020

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The solid−liquid equilibria relationship in the two ternary systems sodium chloride−zinc chloride−water and magnesium chloride−zinc chloride−water at 298 K were investigated based on the isothermal dissolution equilibrium method, integrated with the methods of humid residue, X-ray powder crystal diffraction, and density bottle. According to the determined solubility data combined with the humid residue composition and equilibrium solid phase, the phase diagrams of the two systems were depicted. It is concluded that the two isothermal phase diagrams are categorized as a complex type due to the precipitation of double salt between the two inorganic salt components rather than solid solution. Both of them can be divided into three single solid phase crystalline regions and an unsaturated region. Three solid crystalline phase regions in the ternary system NaCl−ZnCl 2 −H 2 O at 298 K were saturated with NaCl, ZnCl 2 , and 2NaCl•ZnCl 2 •2H 2 O, and those for the ternary system MgCl 2 −ZnCl 2 −H 2 O at 298 K were deposited for MgCl 2 •6H 2 O, MgCl 2 •ZnCl 2 •5H 2 O, and ZnCl 2 . The densities in the equilibrated liquid phase were determined experimentally and simulated by the Laliberte model. As a result, the model can basically describe the density of two electrolytes in an aqueous solution at normal temperature.

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Section: Introductionmentioning

confidence: 99%

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K

et al. 2020

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Methanesulfonic Acid (MSA) in Hydrometallurgy

Binnemans

Jones

2022

J. Sustain. Metall.

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This paper reviews the properties of methanesulfonic acid (MSA) and its potential for use in hydrometallurgy. Although MSA is much less known than sulfuric, hydrochloric or nitric acid, it has several appealing properties that makes it very attractive for the development of new circular flowsheets in hydrometallurgy. Unlike other organic acids such as acetic acid, MSA is a very strong acid (pKa = − 1.9). In addition, it is very stable against chemical oxidation and reduction, and has no tendency to hydrolyze in water. In terms of its environmental impact, MSA has low toxicity and is biodegradable. In nature, it is part of the geochemical sulfur cycle. A useful property is the high solubility of its salts in water: methanesulfonate salts have a much higher solubility in water than sulfate salts. Additionally, MSA and its salts are compatible with the electrowinning of metals because the anode reaction involves the formation of oxygen gas (unlike chlorine gas formation in chloride electrolytes) and no cathodic reduction of the anion occurs (unlike nitrate reduction in nitrate electrolytes). MSA is particularly interesting for lead hydrometallurgy, where it offers more environment-friendly alternatives to HBF4 and H2SiF6. However, MSA can also be adopted in all hydrometallurgical processes that require strong Brønsted acids. It can be used in the metallurgy of copper, zinc, cobalt, nickel, and rare earths, as well as in the recycling of metals from end-of-life products. Although MSA itself is a non-oxidizing acid, in combination with hydrogen peroxide it yields strongly oxidizing lixiviants that can leach copper from chalcopyrite or dissolve metallic silver. The global production of MSA is expected to increase rapidly in the near future thanks to both the industrialization of a new sustainable synthesis process and its many applications (cleaning fluids, electrolytes for electroplating, redox-flow batteries, catalysts in organic synthesis, and as a solvent for high-molecular-weight polymers). As a result, MSA will become more widely available and a lower price will make it an increasingly attractive option. Graphical Abstract

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Standard enthalpies of zinc and copper methanesulfonate tetrahydrates formation

Belova,

Kalinyuk,

Tiflova

2023

Thermochimica Acta

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Phase Equilibria and Thermodynamic Properties in the Zinc Chloride–Zinc Methanesulfonate–Water System

Cited by 8 publications

References 32 publications

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K

Methanesulfonic Acid (MSA) in Hydrometallurgy

Standard enthalpies of zinc and copper methanesulfonate tetrahydrates formation

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Phase Equilibria and Thermodynamic Properties in the Zinc Chloride–Zinc Methanesulfonate–Water System

Cited by 8 publications

References 32 publications

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl2–H2O and MgCl2–ZnCl2–H2O at 298 K

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl2–H2O and MgCl2–ZnCl2–H2O at 298 K

Methanesulfonic Acid (MSA) in Hydrometallurgy

Standard enthalpies of zinc and copper methanesulfonate tetrahydrates formation

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Product

Resources

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Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K

Solid Liquid Phase Equilibria in the Ternary Systems NaCl–ZnCl₂–H₂O and MgCl₂–ZnCl₂–H₂O at 298 K