scholarly journals Corrosion of Indium in Chloride and Sulfate Electrolytes

2014 ◽  
Vol 16 (4) ◽  
Author(s):  
G. Rakhymbay ◽  
M.K. Nauryzbayev ◽  
B.D. Burkitbayeva ◽  
A.M. Argimbaeva ◽  
A.P. Kurbatov ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Sodium Chloride ◽  
Electrolyte Composition ◽  
High Rate ◽  
Stationary Potential ◽  
Indium Chloride ◽  
Indium Hydroxide ◽  
Rate Of Dissolution ◽  
Increasing Temperature ◽  
Indium Electrode

<p>When the electrochemical purification of rough indium is used as sulfate, and chloride electrolytes. Significant differences in the values of the stationary potential indium electrode in the above solutions weren’t observed. The corrosion behavior of rough indium in chloride and sulfate electrolytes with potentiodynamic <br />method was studied. For determining the influence of the electrolyte composition obtained corrosive diagram for solution: sodium chloride; sodium chloride containing indium chloride (III); indium chloride (III); sulfuric acid; sulfuric acid containing sulfate indium (III). Experimental results allowed to determine the composition of the electrolyte, characterized by a high rate of dissolution of indium. It was found that dissolution of the indium occurs at high velocity in the indium-containing electrolytes and at higher temperatures. For electrolytes containing indium with pH = 4 was observed increase dissolution rate of indium anode with increasing temperature, indicating that the limitation of the process electrochemical stage and the beginning of the formation of indium hydroxide. Research results can be used in the electrochemical refining of rough indium.</p>

scholarly journals Destruction of Polyelectrolyte Microcapsules Formed on CaCO3 Microparticles and the Release of a Protein Included by the Adsorption Method

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 520
Author(s):  
Egor V. Musin ◽  
Aleksandr L. Kim ◽  
Sergey A. Tikhonenko
Keyword(s):  
Sodium Chloride ◽  
Ionic Strength ◽  
Ammonium Sulfate ◽  
Fluorescein Isothiocyanate ◽  
Total Protein Content ◽  
High Concentration ◽  
Adsorption Method ◽  
Polyelectrolyte Microcapsules ◽  
High Level ◽  
Increasing Temperature

The degradation of polyelectrolyte microcapsules formed on protein-free CaCO3 particles consisting of polyallylamine (PAH) and polystyrene sulfonate (PSS) and the resulting yield of protein in the presence of various salts of different concentrations, as well as at two pH values, was studied by fluorescence spectroscopy; the protein was incorporated into prepared microcapsules by adsorption. It was found that a high concentration of sodium chloride (2 M) leads to considerable dissociation of PAH, which is apparently due to the loosening of polyelectrolytes under the action of ionic strength. At the same time, 0.2 M sodium chloride and ammonium sulfate of the same ionic strength (0.1 M) exert less influence on the amount of dissociated polymer. In the case of ammonium sulfate (0.1 M), the effect is due to the competitive binding of sulfate anions to the amino groups of the polyelectrolyte. However, unlike microcapsules formed on CaCO3 particles containing protein, the dissociation of polyelectrolyte from microcapsules formed on protein-free particles increased with increasing temperature. Apparently, a similar effect is associated with the absence of a distinct shell, which was observed on microcapsules formed on protein-containing CaCO3 particles. The high level of the presence of Fluorescein isothiocyanate (FITC)-labeled Bovine Serum Albumin (BSA) in the supernatant is explained by the large amount of electrostatically bound protein and the absence of a shell that prevents the release of the protein from the microcapsules. In 2 M NaCl, during the observation period, the amount of the released protein did not exceed 70% of the total protein content in the capsules, in control samples, this value does not exceed 8%, which indicates the predominantly electrostatic nature of protein retention in capsules formed on protein-free CaCO3 particles. The increase in protein yield and peeling of PAH with increasing pH is explained by the proximity of pH 7 to the point of charge exchange of the amino group of polyelectrolyte, as a result of the dissociation of the microcapsule.

Solubility of Indium Trichloride and Some Double Salts

1974 ◽  
Vol 52 (20) ◽  
pp. 3459-3462 ◽  
Author(s):  
Elinor M. Kartzmark
Keyword(s):  
Sodium Chloride ◽  
Calcium Chloride ◽  
Ternary Systems ◽  
Indium Chloride ◽  
Double Salts ◽  
Chloride Water

The solubility of indium trichloride in water has been determined in the range 25 to 110 °C. The ternary systems: indium chloride – sodium chloride–water; indium chloride–calcium chloride–water, and indium chloride–dioxane–water, have been investigated at 25 &([a-z]+);C. Three double salts have been found to occur, having the formulas: 6(InCl3•3H2O)•5(CaCl2•4H2O); InCl3•3C4H8O2•2H2O, and InCl3•2C4H8O2•2H2O.

Effect of Sulfuric Acid /Sodium Hydroxide /Sodium Chloride on Properties of Polyurea

2011 ◽  
Vol 194-196 ◽  
pp. 2330-2333
Author(s):  
Ping Lv ◽  
Xin Mao Li ◽  
Wei Bo Huang
Keyword(s):  
Mechanical Properties ◽  
Sulfuric Acid ◽  
Sodium Chloride ◽  
Sodium Hydroxide ◽  
Decrease Rate ◽  
Hardness Change

This paper mainly studies the glossnesschange、mechanical properties change and hardness change of polyurea coatings during the immersing experiment. The result of the glossness experiment shows that Qtech-116 polyurea sample glossness declining rate were 18.33%, 3.69% and 0.83% after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d.The mechanical properties results shows that the tensile strengt decrease rate were 16.30%、2.69% and 2.28% after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d. Qtech-116 polyurea sample hardness showns declined 0.83%、no change and increased 35.81% respectively after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d.

scholarly journals The use of heated sodium chloride to recover the mist of sulfuric acid

1972 ◽  
Vol 21 (6) ◽  
pp. 813-814
Author(s):  
Takayoshi YOSHIMORI ◽  
Makoto NONOMURA
Keyword(s):  
Sulfuric Acid ◽  
Sodium Chloride
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