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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.


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Patent
11 Sep 2013
TL;DR: In this article, a catalyst for preparing vinyl acetate through an acetylene method is described, and the carrier of the catalyst is activated carbon, and active ingredients loaded on the activated carbon comprise zinc, lanthanum, iron, calcium, copper, potassium, zirconium and platinum.
Abstract: The invention discloses a catalyst for preparing vinyl acetate through an acetylene method. The carrier of the catalyst is activated carbon, and the active ingredients loaded on the activated carbon comprise dipped zinc, lanthanum, iron, calcium, copper, potassium, zirconium and platinum. The method comprises the following steps: mixing solutions of zinc acetate, lanthanum acetate, ferrous sulfate, calcium nitrate, copper nitrate, potassium nitrate, zirconium nitrate and platinum nitrate, dissolving ethanol in the solution, preparing excessive active dipping solution in a stainless steel container, filling the activated carbon into a stainless steel basket with a filtering net, soaking in the dipping solution for 10 hours, lifting the activated carbon basket, and filtering; filling the catalyst containing active substances in a calcining furnace, calcining by utilizing burner gas from the combustion furnace, controlling the temperature to 300 DEG C, evaporating the moisture, gradually raising the temperature to 1000 DEG C, and calcining for 2 hours to obtain the catalyst. The catalyst for preparing vinyl acetate through the acetylene method is used for the reaction for preparing the vinyl acetate, the initial temperature of the reaction can be reduced, and a high space-time yield is obtained.

23 citations

01 Jan 2012
TL;DR: In this paper, the melting point and heat capacity were determined using differential scanning calorimetry (DSC) and two endothermic peaks were observed at 404.8 and 468.83 K corresponding to solid state transition and melting of the compound with the enthalpies of transitions as 2.71 and 20.73 kJ/mol, respectively.
Abstract: Abstract The Mg(NO3)2–KNO3 binary system phase diagram has a congruent melting compound, 2KNO3·Mg(NO3)2. The thermodynamic properties for this compound are not available in the literature. In this study, the nitrate compound was synthesized and the melting point and heat capacity were determined using differential scanning calorimetry (DSC). Two endothermic peaks were observed at 404.8 K and 468.83 K corresponding to solid state transition and melting of the compound with the enthalpies of transitions as 2.71 kJ/mol and 20.73 kJ/mol, respectively. The heat capacity data as function of temperature are fit to polynomial function and thermodynamic properties like enthalpy, entropy and Gibbs energies of the compound as function of temperature are subsequently deduced.

23 citations

Journal ArticleDOI
TL;DR: In this article, a series of CeO 2 supported potassium nitrate and carbonate catalysts were prepared by an impregnation method and the influence of K precursor on the catalytic activity and stability was addressed.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the melting point and heat capacity were determined using differential scanning calorimetry (DSC) and two endothermic peaks were observed at 404.8 and 468.83 K corresponding to solid state transition and melting of the compound with the enthalpies of transitions as 2.71 and 20.73 kJ/mol, respectively.

23 citations

Patent
19 Nov 2014
TL;DR: An organic-inorganic microbiological water-soluble fertilizer specially used for grape is prepared from following raw materials: potassium fulvate, potassium nitrate, urea, monoammonium phosphate, polyaspartic acid, potassium sulfate, zinc sulfate and EDTA as discussed by the authors.
Abstract: An organic-inorganic microbiological water-soluble fertilizer specially used for grape is prepared from following raw materials: potassium fulvate, potassium nitrate, urea, monoammonium phosphate, polyaspartic acid, potassium sulfate, zinc sulfate, ferrous sulfate, borax, a microbiological preparation, copper sulfate, manganese sulfate and EDTA. A preparation method of the fertilizer includes following steps: mixing powdery potassium fulvate, the powdery microbiological preparation and powdery polyaspartic acid uniformly to obtain a mixed material; processing the mixed material at constant temperature to obtain a material A; respectively crushing the urea, the potassium nitrate, the potassium sulfate and the monoammonium phosphate with mixing uniformly to obtain a material B; crushing the zinc sulfate, the manganese sulfate, the ferrous sulfate, the borax, the copper sulfate and the EDTA with mixing uniformly to obtain a material C; mixing uniformly the material A, the material B and the material C to obtain a product. The fertilizer is complete in nutrition, is reasonable in formula, allows crops to absorb easily, has a significant yield-increasing effect, contains organic substances, inorganic substances, bacteria and medium-and-trace elements, is environmental-protective and is free of pollution, and can protect ecological environment and improve farmland soil.

23 citations


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