8 results about "Dibutyl phosphate" patented technology

The application discloses a mineralization treatment method of organic waste liquid, and belongs to the technical field of radioactive waste treatment. The organic waste liquid contains uranium, tributyl phosphate and diluent. The mineralization treatment method comprises the following steps: the organic waste liquid is separated through short-path molecular rectification to obtain a diluent fraction and a tributyl phosphate fraction; the tributyl phosphate fraction is reacted with alkali liquor to generate an alkaline hydrolysis product containing dibutyl phosphate salt, n-butanol, water and uranium; the n-butanol is collected through condensation reflux; and the remaining alkaline hydrolysis product is treated through two-stage oxygen-controlled incineration, so that phosphate glass and qualified flue gas are finally obtained. The mineralization treatment method has the advantages of no corrosion, short process, high-efficiency mineralization and stabilization of the waste liquid, direct disposal of the product, consideration of resource recovery and radioactive safety, and easy industrialization.

Provided is a method for efficiently removing the butanol, dibutyl phosphate, etc., contained as impurities in tributyl phosphate. The technique of the disclosure is a method for producing tributyl phosphate characterized by having a step that brings crude tributyl phosphate into contact with an aluminosilicate compound in which the molar ratio (SiO2 / Al2O3) of silica and alumina in the zeolite framework is 10 or more. Also disclosed is a method for producing an extractant that contains tributyl phosphate and, as a diluent, C6 or higher hydrocarbon, wherein the tributyl phosphate is mixed with the diluent after the impurities contained in the component have been removed by contact with an aluminosilicate compound in which the molar ratio of silica and alumina in the zeolite framework is 10 or more.

This invention belongs to the field of rare earth material preparation technology and discloses a method for preparing a rare earth antibacterial carrier. The specific steps are as follows: (1) rare earth chloride, zinc chloride and zirconium oxychloride are prepared into a mixed aqueous solution; (2) the mixed aqueous solution is heated, PEG and glacial acetic acid are added, mixed evenly, the pH of the mixed solution is adjusted to 6.7-7, the precipitate is filtered, dried, and the first reactant is obtained; (3) the first reactant is slurried with water, concentrated phosphoric acid and 1-butyl-3-methylimidazolium dibutyl phosphate are added, the reaction is carried out, the precipitate is filtered, dried, and a rare earth antibacterial carrier with an ion adsorption capacity of 1g / 100g-5g / 100g is obtained. This invention has the characteristics of simple operation, short reaction time, low reaction temperature, easy washing and filtration of reactants, large specific surface area of ​​the carrier, and high metal ion loading.

The invention discloses a tributyl phosphate synthesis method based on phosphorus pentoxide solvation feeding, which comprises the following steps: adding an organic solvent into phosphorus pentoxide positioned on a microporous filter plate, dissolving the phosphorus pentoxide, adding the organic solvent solution of the phosphorus pentoxide into a mixture of n-butyl alcohol, a catalyst and the organic solvent through the microporous filter plate, and stirring to obtain a mixture; an esterification reaction is carried out, and the organic solvent and water generated by the esterification reaction form azeotrope; carrying out oil-water separation on the azeotrope; returning an organic phase to the microporous filter plate, and dissolving phosphorus pentoxide; and repeating the steps until the phosphorus pentoxide is completely dissolved and no water is generated in the esterification reaction to obtain the TBP. According to the invention, P2O5 stored in a microporous filter plate is slightly dissolved by a circulating organic solvent and then is dropped into a mixture in a liquid form, so that excessive local raw materials and side reaction caused by direct addition of P2O5 solid are avoided. According to the method, the generation of byproducts such as dibutyl phosphate and monobutyl ester can be remarkably reduced under mild and low-pollution conditions, the selectivity and total yield of TBP are improved, the subsequent separation and purification process is simplified, and the production cost of TBP is reduced.

The application discloses a rare earth-molybdenum antibacterial material and a preparation method thereof, and belongs to the technical field of rare earth materials. The preparation method comprises the following steps: uniformly mixing chlorinated rare earth, zinc chloride, zirconium oxychloride and water, adding PEG and glacial acetic acid after heating the mixed solution, adding an ammonium bicarbonate solution and citric acid or tartaric acid, centrifuging the reaction liquid after the reaction is completed, drying the precipitate, uniformly mixing the obtained first reaction product with deionized water, adding concentrated phosphoric acid and 1-butyl-3-methyl imidazole phosphoric acid dibutyl ester salt for heating reaction, filtering the reaction liquid, obtaining the precipitate, drying the precipitate, adding the obtained second reaction product into an ammonium molybdate solution and glacial acetic acid for reaction, filtering the reaction liquid, washing and drying the precipitate, and calcining the precipitate to obtain the rare earth-molybdenum antibacterial material. The rare earth-molybdenum antibacterial material synthesized by the liquid phase method has the advantages of short reaction time, small particle size, large specific surface area, good antibacterial effect and good aging resistance.

The application discloses a preparation method of a rare earth antibacterial material, and specifically comprises the following steps: (1) first, a mixed solution of chlorinated rare earth and zirconium oxychloride is prepared, heated, then polyethylene glycol, glacial acetic acid and ammonium bicarbonate solution are added, reacted, filtered, and dried; (2) water, concentrated phosphoric acid and 1-butyl-3-methyl imidazole phosphoric acid dibutyl ester salt are added, reacted, filtered, and dried; (3) zinc nitrate solution is added into the second reactant, reacted, filtered, washed, dried, calcined, and the rare earth-zinc antibacterial material is obtained. The rare earth-zinc antibacterial material prepared by the method has good uniformity, can be obtained without crushing, has a particle size of 500-1500nm, a large specific surface area (15-150m 2 / g), increased adsorption amount (1.5-4.5g / 100g) and adsorption strength of zinc ions, good aging resistance, excellent antibacterial effect, and the antibacterial rate of the material reaches 99.99% on staphylococcus aureus, escherichia coli and klebsiella pneumoniae, and the antibacterial rate of the material reaches more than 99% on candida albicans and pseudomonas aeruginosa.

The invention discloses a low-temperature seamless steel tube and a processing technology thereof, and relates to the technical field of seamless steel tubes, the processing technology comprises the following steps: sequentially carrying out converter smelting, secondary refining, vacuum degassing and continuous casting on raw materials according to a formula to obtain a tube blank; the pipe blank is sequentially subjected to heating, perforating, continuous rolling, pipe removing, tension reducing and heat treatment, and an original pipe is obtained; the original pipe is sequentially subjected to surface pretreatment, electroplating and chemical vapor deposition, and a first steel pipe is obtained; and the first steel pipe is sequentially immersed in the 3-aminopropyltriethoxysilane solution and the cerium dibutyl phosphate suspension and dried, and the seamless steel pipe used at the low temperature is obtained.

The invention discloses a green and environment-friendly production method of triazole pyrimidone. The method comprises the steps of constant-temperature reaction, catalyst and solvent recovery, product separation and purification and catalyst regeneration. According to the method, 2-amino-6-methyl-[1, 2, 4]-triazolo [1, 5-a] pyrimidine-5-ketone is used as a parent, sodium bicarbonate, 1-butyl-3-methylimidazolium hydrogen sulfate functionalized ionic liquid and a mesoporous silicon supported zirconic acid catalyst are matched, a choline chloride-ethylene glycol eutectic solvent is used as a reaction medium, and the ionic liquid functionalized ionic liquid functionalized mesoporous silicon supported zirconic acid catalyst is used as a catalyst to prepare the 2-amino-6-methyl-[1, 2, 4]-triazolo [1, 5-a] pyrimidine-5-ketone derivative. And adding a pre-activated n-propyl alcohol-dibutyl phosphate alkylation reagent for reaction. After the reaction, the mesoporous silicon loaded zirconic acid catalyst is recovered through centrifugation, and a solvent phase is subjected to reduced pressure distillation to remove water and can be recycled. The product is obtained by pH adjustment precipitation, washing and drying, and has high purity and yield. According to the method, the cost and pollution are reduced through reagent recycling, the problems of poor environmental protection property and resource waste in traditional production are solved, and the method has both economical efficiency and environmental protection property.