ChemInform Abstract: STUDY OF THE THERMAL DECOMPOSITION OF MSO4 (M = ZINC(II), CADMIUM(II), MERCURY(II)) IN A SODIUM NITRATE-POTASSIUM NITRATE MELT

1985 ◽  
Vol 16 (21) ◽  
Author(s):  
N. B. SINGH ◽  
S. P. PANDEY
Keyword(s):  
Thermal Decomposition ◽  
Sodium Nitrate ◽  
Potassium Nitrate

Thermoelectric Studies of Silver Nitrate in Sodium Nitrate – Potassium Nitrate Eutectic Melt

1971 ◽  
Vol 49 (12) ◽  
pp. 2044-2047
Author(s):  
L. G. Boxall ◽  
K. E. Johnson
Keyword(s):  
Seebeck Coefficient ◽  
Silver Nitrate ◽  
Mole Fraction ◽  
Sodium Nitrate ◽  
Nitrate Concentration ◽  
Potassium Nitrate ◽  
Silver Nitrate Concentration ◽  
Eutectic Melt

The Seebeck coefficient, εT, of the thermocell Ag(T)/AgNO3 in NaNO3 − KNO3/Ag (T + ΔT) was measured as a function of silver nitrate concentration and temperature. Extrapolation of the results to unit mole fraction, N, of AgNO3 gave the value εT0 = − 277.5 − 0.136T °C (µV deg−1).For several mixed melts of AgNO3 and an alkali nitrate the function [Formula: see text] was calculated and shown to be linear in N. P was extrapolated to finite values for the pure alkali nitrates.

scholarly journals Extractive crystallization of salts in the ternary systems sodium (potassium, cesium) nitrate – water – triethylamine

2021 ◽  
Vol 21 (2) ◽  
pp. 159-168
Author(s):  
Veronika V. Danilina ◽  
◽  
Dmitry I. Chernov ◽  
Dmitry G. Cherkasov ◽  
Konstantin K. Il’in ◽  
...  
Keyword(s):  
Sodium Nitrate ◽  
Nitrate Solution ◽  
Maximum Yield ◽  
Ternary Systems ◽  
Potassium Nitrate ◽  
Cesium Nitrate ◽  
Sodium Potassium ◽  
Metal Nitrates ◽  
Amine Content ◽  
Water Salt

A comparative analysis of the results of our polythermal study of the ternary systems sodium (potassium, cesium) nitrate – water – triethylamine has been carried out to estimate the efficiency of the use of triethylamine in the extractive crystallization of alkali metal nitrates from water–salt solutions containing 43.0, 44.0, 45.0, 46.0, and 47.0 wt. % sodium nitrate in the range of 10.0–25.0°C, 20.0, 21.0, and 22.0 wt.% potassium nitrate and 18.0, 19.0, 20.0 and 21.0 wt. % cesium nitrate in the range of 20.0–25.0°C. The dependences of the yield of these salts on the amount of triethylamine added and temperature have been found. It has been established that the maximum yield of sodium nitrate (79.4%) is observed for the aqueous solution with 47 wt.% salt upon the introduction of 90 wt.% triethylamine at 25.0° C. The maximum yield in the systems potassium (cesium) nitrate – water – triethylamine was 68.9% (22 wt. % potassium nitrate solution) and 66.2% (21 wt. % cesium nitrate solution) at 20.0° C and 90 wt. % amine content.

scholarly journals The Temperature Dependence of the Isotope Effect for Electromigration of Potassium Ions in Molten Potassium Nitrate

1968 ◽  
Vol 23 (11) ◽  
pp. 1779-1782
Author(s):  
Arnold Lundén ◽  
Alf Ekhed
Keyword(s):  
Thermal Decomposition ◽  
Temperature Dependence ◽  
Isotope Effect ◽  
Separation Factor ◽  
Mass Effect ◽  
Potassium Nitrate ◽  
Relative Difference ◽  
Potassium Ions ◽  
Heavy Isotope ◽  
Significant Enrichment

The relative difference (Δb/b) between the electromigration mobilities of 39K and 41K in molten KNO3 has been measured over the range 354° to 586°C. The mass effect, μ= (Δb/b)/(Δm/m), becomes larger when the temperature is increased, following the relation—,u =0.0385+0.000124 (t-337)where t is the temperature in °C. Due to thermal decomposition, the nitrate is partly converted to nitrite, but it is proved by performing experiments with different initial concentrations of nitrite, that the isotope effect for potassium is not influenced noticeably by the concentration of the anions.The experiment is designed to give an enrichment of the heavy isotope 41K in a small anode compartment and in the upper part of the separation tube. However, it was possible to establish that a slight, but significant, enrichment of the light isotope 39K was obtained in the lower part of the separation tube, i. e. just above the opening into the large cathode compartment. A separation factor of 1.003 was estimated for this enrichment effect, which is due to non-ideal conditions of the experiment.

Screening tests of sodium nitrate and potassium nitrate decomposition

Solar Energy ◽  
1982 ◽  
Vol 29 (5) ◽  
pp. 437-439 ◽  
Author(s):  
C.M. Kramer ◽  
Z.A. Munir ◽  
J.V. Volponi
Keyword(s):  
Sodium Nitrate ◽  
Potassium Nitrate ◽  
Screening Tests
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