8 results about "Phosphorous pentachloride" patented technology

The invention relates to a preparation process of high-purity lithium hexafluorophosphate, which comprises the following specific steps: S1, quantitatively adding anhydrous hydrogen fluoride into a corresponding reaction kettle body, and controlling the environment temperature in the reaction kettle body at-50 DEG C to-20 DEG C through a temperature control device; s2, maintaining the pressure in the reaction kettle body at 0.1-0.5 MPa, dispersing and adding solid phosphorus pentachloride into the reaction kettle body through a corresponding feeding device, and enabling the solid phosphorus pentachloride to react with the anhydrous hydrogen fluoride in the step S1 at the temperature of-50 DEG C to-20 DEG C to obtain phosphorus pentafluoride and gaseous hydrogen chloride, the gaseous hydrogen chloride escapes from the reaction liquid and then is discharged for recovery or absorption treatment; and S3, dispersing and adding lithium fluoride into the reaction kettle body through the feeding device, and carrying out complexing reaction on the lithium fluoride and phosphorus pentafluoride in the anhydrous hydrogen fluoride to obtain lithium hexafluorophosphate. The reaction process is high in controllability, so that the high-purity lithium hexafluorophosphate product can be stably prepared.

The present application relates to the chemical industry field, specifically to a preparation method of fluorinated pentachlorophosphate; the method provides fluorinated pentachlorophosphate prepared by using phosphorus pentachloride, MF and catalyst as raw materials; the raw material mixed solution utilizes the concentration difference, passes through the metal sintered filter plate provided with the catalyst, can accelerate the reaction, the catalyst usage amount is minimum, and the loss amount is minimum; due to the design of the metal sintered plate, the reaction kettle bottom discharge after the reaction is completed is the high-purity product; the present application provides a preparation of the catalyst sintered filter, the organic antimony complex, the lanthanum complex and the zirconium silicate beads are connected through intermolecular force, the active component is uniformly distributed on the zirconium silicate beads, the connection is firm, the loss is not easy, separation is easy, the service life of the catalyst can be improved, the catalyst is inlaid in the sintered filter, the catalyst loss is very small, the reaction material passes through the filter plate containing the catalyst and continuously refluxes, and the reaction efficiency is greatly improved.

The application provides a production process of a sodium ion battery electrolyte. The production process comprises the following steps: a) dissolving phosphorus pentachloride in a carbonate solvent under a protective atmosphere, then adding ammonium fluoride and performing a solid-phase reaction by heating; then, removing insoluble substances through solid-liquid separation to obtain solution A; b) dispersing a sodium source in a solvent to obtain solution B; c) adding solution B into solution A under a protective atmosphere to perform a reaction, then removing impurities through solid-liquid separation and removing the solvent introduced in step b) to obtain a crude sodium ion battery electrolyte; d) mixing the sodium ion battery electrolyte with an organic solvent to obtain a sodium ion battery electrolyte; the organic solvent is different from the carbonate solvent used in step a); wherein, steps a) and b) are not limited in sequence. The production process can directly prepare a sodium ion battery electrolyte with sodium hexafluorophosphate as a sodium salt, the process is simple and environmentally friendly, and the yield and purity of sodium hexafluorophosphate are relatively high.

The utility model discloses a novel phosphorus pentachloride reaction device, which belongs to the technical field of phosphorus pentachloride production and comprises a kettle main body, a reaction cavity is arranged in the kettle main body, the top end of the reaction cavity is connected with a driving top frame, the reaction cavity comprises a kettle cavity, and a main shaft frame is arranged in the center of the kettle cavity. A supporting frame is arranged at the middle end of the main shaft frame, a shaft sleeve is fixed to the outer wall of the main shaft frame through a key groove and a jackscrew, one side of the shaft sleeve is connected with a paddle, and the bottom face of the paddle is connected with a reinforcing rib. According to the reaction device, the reaction of liquid and gas is improved through the mode that the internal paddles are distributed in a crossed and inclined mode, the liquid is changed into solid more quickly, the reaction time of normal materials is shortened, meanwhile, in the discharging process, the scraping plates at the edge ends of the paddles can scrape materials attached to the inner walls at the same time, and the discharging efficiency is improved. And the inner wall of the discharging pipe is continuously scraped while the inner scraper at the bottom end rotates, so that blockage of a bottom pipeline can be avoided, smooth discharging is kept, and the quality and the overall machining efficiency are improved.

Pollution by phosphates affect aquatic life as they have side effects even at very low concentrations. Silica molybdate is prepared by first chlorinating silica sand using phosphorous pentachloride to give chlorinated silica which is aminated using ethylenediamine and thereafter treated with sodium molybdate. The molecular structure of the silica molybdate was characterized using Fourier Transform Infrared (FT-IR). FT-IR results showed Adsorption bands at 854cm-l and 542cm-l which were attributed to Mo=O and Mo-O stretching in molybdate. Peaks observed at 1388 and 1662cm-1 were attributed with the vibration mode of Mo-OH bond and bending mode of adsorbed water. Spectra peaks observed at 542, 634.58 and 898.97 cm-1 were attributed to the adsorption of molybdate. The physical adsorption parameters which were examined using batch adsorption system were; temperature, pH, contact, time, initial concentration using sorption models, adsorption kinetics and thermodynamics. Results showed that optimum pH for biosorption of P042- was 6.0, optimal contact time was 30 minutes, optimum temperature was 45°C. The experimental results obtained showed that the maximum phosphate adsorption of silica molybdate at optimum conditions was found to be 94.73% in water.

The application provides a preparation method and application of a sodium hexafluorophosphate concentrated solution and belongs to the field of batteries. Sodium halide and phosphorus pentachloride are reacted in a solvent (first reaction), a precursor solution generated in the reaction is reacted with hydrogen fluoride (second reaction), a sodium hexafluorophosphate solution is generated, and then degassing, filtration, concentration, dilution and resin deacidification are sequentially performed to obtain the sodium hexafluorophosphate concentrated solution. Then, impurities are removed by degassing, filtration, concentration, dilution and deacidification resin to obtain a final product. The sodium hexafluorophosphate concentrated solution product obtained by the application can be used as an electrolyte salt for a sodium ion battery electrolyte, and has the same or higher battery performance as that of a common sodium hexafluorophosphate crystal.

The invention discloses an all-solid-state battery interface optimizer with lithium ion conduction and flame-retardant functions and a preparation method thereof, the structure of the all-solid-state battery interface optimizer is shown as a formula (I), m is greater than or equal to 1 and less than or equal to 4, n is greater than or equal to 1 and less than or equal to 3, x is greater than or equal to 1 and less than or equal to 3, and m, n and x are all integers. The bifunctional all-solid-state battery interface optimizer PPD is synthesized by chemical reaction of raw materials including phosphorus pentachloride, diamine and alcohol ether, and lithium salt (such as LiTFSI) needs to be doped before use to provide lithium ion conductivity. The interface optimizer has the advantages of good lithium ion conductivity, flame resistance, fluidity, wettability and the like. The interface optimizer is synthesized by a one-pot one-step method, the process is simple, the reproducibility is good, the controllability is good, the cost is low, and when the interface optimizer is applied to the all-solid-state battery interface optimizer, the preparation of the all-solid-state battery with high safety, high energy density and low cost is expected to be realized.

The invention discloses a preparation method of a phosphazene catalyst and application of the phosphazene catalyst in the field of preparation of polyether polyols, phosphorus pentachloride is uniformly dispersed in a solvent under the action of a fatty acid amide dispersing agent and reacts with an amine monomer to obtain an inorganic phosphazene catalyst solution, and the inorganic phosphazene catalyst solution reacts with alkali to obtain an organic phosphazene catalyst solution; according to the method, side reactions can be greatly reduced, and the purity of the synthesized phosphazene catalyst reaches 99.5% or above, so that the phosphazene catalyst does not need to be purified, the production technological process is greatly reduced, the loss of the phosphazene catalyst in the purification process is reduced, and the yield can reach 99% or above. The polyether polyol synthesized by the catalyst not only has higher catalytic activity, but also can greatly reduce the occurrence of side reactions in the reaction process of epoxypropane, so that the prepared polyether polyol has the advantages of low degree of unsaturation, low odor and low aldehyde content.