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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.


Papers
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Journal ArticleDOI
Kangcheng Xu1
TL;DR: Raman spectroscopy was employed to investigate the KNO3-RbNO3 system in this article, and it was found that Rb+ may substitute K+ up to 67 mol % in the solid solutions of the K NO3 II structure.
Abstract: Raman spectroscopy was employed to investigate the KNO3-RbNO3 system Raman studies indicated that Rb+ may substitute K+ up to 67 mol % in the solid solutions of the KNO3 II structure (denoted as K1 − x RbxNO3 (KII)) and up to 80 mol % in the solid solutions of the KNO3 III structure (denoted as K1 + x RbxNO3 (KIII)) The substitutional crystals retained the transitions of I to III to II of KNO3 on cooling and the metastable property of KNO3 III at room temperature It was found that rubidium nitrate had a considerable tendency to have the structure of potassium nitrate This accounts for the fact that larger rubidium ions can replace many more smaller potassium ions in the nitrate than vice versa When the concentration of rubidium ions was more than 67 mol %, the substituted crystals underwent the mixed structural phase transition of the KNO3 III structure to the RbNO3 IV structure, and K1 − x RbxNO3 (KIII) seemed to consist of disordered R3m microstructure

9 citations

Patent
14 Sep 2011
TL;DR: In this article, a novel acidic molybdenum aluminum etching liquid and a preparation process thereof are described. But the molybenzum aluminium etch liquid has low granularity and high purity and can control etching angles and the etching amount of different metal layers.
Abstract: The invention discloses novel acidic molybdenum aluminum etching liquid and a preparation process thereof. The novel acidic molybdenum aluminum etching liquid comprises phosphoric acid, acetic acid, nitric acid, potassium chloride, metal nitrate and pure water, and is prepared by controlling the phosphoric acid, the acetic acid and the nitric acid in the raw materials by using high-acidity cation exchange resin, removing impurity ions from the phosphoric acid, the acetic acid and the nitric acid and uniformly mixing the six raw materials. The etching liquid preparation process comprises the following steps of: keeping the rotation speed of a stirrer of a batching tank at normal temperature and normal pressure; adding the phosphoric acid, the acetic acid, the nitric acid, the potassium chloride, potassium nitrate and the pure water into the batching tank sequentially; fully stirring; and filtering by using a filter to obtain the molybdenum aluminum etching liquid. The molybdenum aluminum etching liquid has low granularity and high purity, and can control etching angles and the etching amount of different metal layers and improve the yield of an etched product.

9 citations

Patent
04 Jan 2012
TL;DR: In this article, an environmentally friendly chromium-free passivation solution for aluminum and aluminum alloy surface and application thereof is presented, which consists of molybdate, fluoroborate, nitrate, boric acid and an acidic catalyst.
Abstract: The invention discloses an environmentally friendly chromium-free passivation solution for aluminum and aluminum alloy surface and application thereof. The passivation solution consists of molybdate, fluoroborate, nitrate, boric acid and an acidic catalyst, wherein the molybdate is one or a complex of sodium molybdate and potassium molybdate; the fluoroborate is one or a complex of sodium fluoroborate and potassium fluoroborate; the nitrate is one or a complex of sodium nitrate, potassium nitrate, copper nitrate and calcium nitrate; and the acidic catalyst is one or a complex of nitric acid, sulfuric acid, phosphoric acid and acetic acid. The content of the molybdate is 3-50 g/L, the content of the fluoroborate is 1-20 g/L, the content of the nitrate is 1-15 g/L and the content of the boric acid is 0.1-10 g/L; and the acidic catalyst is used to adjust the pH value to 2-6 and the temperature condition is the room temperature. The aluminum and aluminum alloy workpieces are degreased, descaled, activated and cleaned and then placed in the passivation solution to passivate, and the corrosion resistance of the aluminum alloy can be increased.

9 citations

Patent
13 Apr 2016
TL;DR: In this paper, a plant nutrient solution is described by being prepared from potassium nitrate, ammonium nitrate and ammonium dihydrogen phosphate, and deionized water.
Abstract: The invention provides a plant nutrient solution formula. The plant nutrient solution is characterized by being prepared from potassium nitrate, ammonium nitrate, ammonium dihydrogen phosphate, calcium nitrate, manganese sulfate, nitrate nitrogen, magnesium oxide, phosphoric anhydride, zinc sulfate, ferric citrate, boric acid, sodium molybdate, sodium iodide, vitamins, humic acid, copper sulfate and deionized water. The formula is reasonable, the plant nutrient solution is a culture solution which contains nutrient elements suitable for plant growth and has a proper pH value, nutrient substances are comprehensive and balanced, and nutrients needed in the growing period can be provided for herbaceous plants; after the plant nutrient solution is used, herbaceous plants grow rapidly with luxuriant foliage and have dark green leaves, and the plant nutrient solution is suitable for being widely used and enables plants to grow rapidly; furthermore, all the raw materials of the plant nutrient solution are common raw materials available on the market, and thus the preparation cost is low.

9 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202334
202268
202139
202064
2019167
2018241