Topic
Potassium nitrate
About: Potassium nitrate is a research topic. Over the lifetime, 3537 publications have been published within this topic receiving 29450 citations. The topic is also known as: Nitric acid, potassium salt & Saltpeter.
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TL;DR: In this article, the anodic behavior of Alloy 22 in high-chloride and high-nitrate electrolytes at temperatures as high as 150°C at ambient pressure was investigated.
Abstract: Alloy 22 (UNS N06022) has been selected as the corrosion-resistant barrier for the nuclear waste containers in the proposed repository at Yucca Mountain. Alloy 22 may be susceptible to crevice corrosion in the presence of hot chloride-containing solutions. The nitrate ion (NO3−) is an inhibitor for crevice corrosion of Alloy 22 in chloride (Cl−)-containing aqueous solutions. The higher the ratio, R = [NO3−]/[Cl−], is in the solution, the stronger the inhibition of crevice corrosion by nitrate. Atmospheric desert dust contains both chloride and nitrate salts, generally based on sodium (Na+) and potassium (K+). Some of these salts may deliquesce at relatively low humidity at temperatures on the order of 150°C. The resulting deliquesced brines are highly concentrated and especially rich in nitrate (Ratios R ≫ 1). Electrochemical tests have been performed to explore the anodic behavior of Alloy 22 in high-chloride and high-nitrate electrolytes at temperatures as high as 150°C at ambient pressure. Tes...
8 citations
8 citations
Patent•
23 Sep 1991TL;DR: In this article, a method for the manufacture of alkylene carbonates is described, which is free of halogen contaminants. But the method requires the use of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.
Abstract: A method for the manufacture of alkylene carbonates is disclosed. Alkylene carbonates that are free of halogen contaminants are prepared by reacting alkylene oxides and carbon dioxide in the presence of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.
8 citations
TL;DR: In this article, a comproportionation in acid cupric sulfate solutions with varying concentrations of potassium nitrate was shown to transform Cu2O films conductivity from n-type to p-type with increasing the concentration of nitrate ions.
8 citations
Patent•
13 Oct 1969
TL;DR: POTASSIUM CHLORIDE and water were added to a first AQUEOUS NITRATE-CHLoride MOTHER LIQUOR having a K+/(K++NH4+) MOL RATIO of not more than 0.37 as discussed by the authors.
Abstract: POTASSIUM CHLORIDE AND WATER AND ADDED TO A FIRST AQUEOUS NITRATE-CHLORIDE MOTHER LIQUOR HAVING A K+/(K++NH4+) MOL RATIO OF NOT MORE THAN ABOUT 0.37 TO FORM A POTASSIUM NITRATE CRYSTALLIZATION MEDIUM. THE MEDIUM IS COOLED TO PRECIPITATE CRYSTALLINE POTASSIUM NITRATE AND FORM A SECOND NITRATE-CHLORIDE MOTHER LIQUOR. AFTER SEPARATION OF THE POTASSIUM NITRATE, AMMONIUM NITRATE IS ADDED TO THE SECOND MOTHER LIQUOR, ALL ADDED WATER IS EVAPORATED TO FORM AN AMMONIUM CHLORIDE CRYSTALLIZATION MEDIUM, AND AMMONIUM CHLORIDE IS CRYSTALLIZED AT A TEMPERATURE HIGHER THAN THE POTASSIUM NITRITE CRYSTALLIZATION. THE AMMONIUM CHLORIDE IS SEPARATED, AND THE RESIDUAL MOTHER LIQUOR IS RECYCLED TO RECEIVE ADDITIONAL POTASSIUM CHLORIDE AND WATER. THE MAINTENANCE OF A NET BALANCE OF COM- PONENTS PERMITS CONTINUOUS OPERATION OF A CYCLIC METATHESIS OPERATION.
8 citations