9 results about "Sulfur chloride" patented technology

The invention discloses a synthesis method of lithium phosphorus sulfur chloride, and relates to the technical field of preparation of sulfide solid electrolyte for all-solid-state lithium ion batteries, and the scheme is as follows: the synthesis method of lithium phosphorus sulfur chloride comprises the following steps: pretreatment of raw materials: mixing lithium carbonate (Li2CO3), phosphorus pentasulfide (P2S5), lithium chloride (LiCl) and elemental sulfur (S) according to a preset ratio, and then adding a catalyst, grinding and dispersing for a preset time to obtain uniformly dispersed mixed powder; reduction reaction: fully mixing the mixed powder with a reducing agent, heating to a first preset temperature condition, and carrying out reduction reaction to obtain a reduction product; sintering and purifying: heating the reduction product to a second preset temperature, and sintering to form a lithium phosphorus sulfur chloride (Li6PS5Cl) crystal phase to obtain a lithium phosphorus sulfur chloride (Li6PS5Cl) product; the raw material cost can be remarkably reduced, the process safety and economy are optimized, and large-scale industrial preparation of lithium phosphorus sulfur chlorine is realized.

This disclosure provides a method for preparing sulfidated alkylphenol salt products to achieve a high sulfidation ratio of sulfidated alkylphenol salt to unsulfidated alkylphenol salt / phenol in the context of neutralization and optional over-alkaliening additives. The sulfidated alkylphenol salt products are obtained by sulfidating alkylphenols with a sulfur chloride blend comprising about 40% to about 75% by weight of sulfur dichloride.

This invention provides a coated and modified ultra-high nickel cathode material and its preparation method, belonging to the technical field of lithium-ion battery cathode materials. The coated and modified cathode material includes ultra-high nickel cathode material particles and a composite coating layer covering its surface. The coating layer consists of a Mg and F dual-doped sulfur chloride solid electrolyte, Li. 4.3 AlS 3.3 Cl 0.7 It is composed of Mg and conductive carbon black (CB). 2+ The introduction of Mg and F can regulate the lattice structure and enhance the lithium-ion migration rate. F⁻ doping can improve the Al-S bond energy and chemical stability, thereby forming a highly stable ion conduction network. The introduction of conductive carbon black constructs a continuous electronic conduction pathway, realizing the synergistic transport of ions and electrons. Through the above composite coating, the interfacial side reactions between the ultra-high nickel cathode and the electrolyte can be significantly suppressed, while reducing the growth of interfacial impedance, suppressing oxygen release and lattice collapse under high temperature and high pressure, thereby improving the cycle stability of the material. The Mg and F dual-doped Li₂ provided by this invention 4.3 AlS 3.3 Cl 0.7 The / CB coating modification scheme provides an efficient and feasible new approach for high-energy-density lithium-ion battery cathode interface engineering.

The utility model discloses a production device of polymeric ferric chloride sulfate, which comprises a pressure-resistant tank body, a main / auxiliary liquid inlet pipe orifice, an exhaust pipe orifice and an upper gas inlet pipe orifice are arranged at the top of the pressure-resistant tank body, a liquid outlet pipe orifice is arranged at the bottom of the pressure-resistant tank body, and three lower gas inlet pipe orifices are uniformly distributed in the circumferential direction of the tank body; the main ejector is connected with a main liquid inlet pipe opening and exhausts circularly, and the auxiliary ejector injects liquid into the position below the liquid level through an extension pipe. According to the utility model, the design of an under-liquid gas distribution pipe is canceled, and a three-dimensional gas supply layout is adopted, so that the problems that the traditional structure is easy to corrode and perforate and the gas distribution is non-uniform are solved; the lower gas inlet pipe opening and the upper gas inlet pipe opening which are circumferentially symmetrical form a spiral gas-liquid mixed flow, the gas diffusion uniformity is improved, and oxidation dead angles are reduced; the main ejector and the auxiliary ejector work cooperatively, the long throat structure of the main ejector strengthens turbulent mixing, the short throat design of the auxiliary ejector generates deep microbubbles, the gas-liquid contact area is increased, and the reaction efficiency is improved; the oxygen distribution proportion and the injection mode can be flexibly adjusted to adapt to the raw material concentration fluctuation of + / -20%.

This invention provides a fully continuous preparation method for probucol active pharmaceutical ingredient intermediates, belonging to the field of organic synthesis technology. The method includes the following steps: a mixed solution of 2,6-di-tert-butylphenol and elemental iodine, and a sulfur monochloride solution are continuously passed into a microchannel reactor for a condensation reaction, followed by cooling of the reaction solution; then, the solution is continuously passed into a fixed-bed reactor for hydrogenation under the catalysis of sulfur-modified Ni-Co / Al2O3. This invention combines a microchannel continuous flow reactor and a fixed-bed reactor for the continuous synthesis of probucol active pharmaceutical ingredient intermediates. The process steps and operations are simple, reducing intermediate purification steps and shortening the processing time; the solvent has low toxicity, making the method green, safe, and environmentally friendly; the raw materials are inexpensive and readily available, the reaction conditions are mild, and the target product has high yield and purity, resulting in good product quality; the use of the microchannel continuous flow reactor improves the mass and heat transfer of materials, reduces the amount of excipients, and further reduces production costs.

The application discloses a method for producing thiodicarb by using a single solvent and without catalyst, which comprises the following steps: reacting SCl2 with pyridine to generate a ligand dipyrrolidone monosulfide hydrochloride in a solvent; dissolving methomyl in the solvent to obtain a methomyl solution, mixing a part of the solution with the ligand dipyrrolidone monosulfide hydrochloride to obtain a mixed solution, and continuously feeding the mixed solution and the mixed solution into two reaction kettles in sequence to synthesize thiodicarb; performing solid-liquid separation, pressure filtering the solid after washing with water, centrifuging the solid after washing with a solvent, and vacuum drying to obtain a final product. The preparation method provided by the application does not use any catalyst, avoids a subsequent catalyst removal step, uses only dichloroethane as a solvent for thiodicarb synthesis, and the feeding amount of sulfur dichloride and pyridine is close to the theoretical value, so that the reaction process is almost in a homogeneous state, the reaction speed is fast, the conversion rate of raw material methomyl is high, and the yield of finished product thiodicarb is high.

This invention relates to a low-temperature synthesis method for preparing an air-stabilized lithium-phosphorus-sulfur-chlorine solid electrolyte, belonging to the field of lithium-ion solid-state battery technology. Lithium sulfide, phosphorus pentasulfide, lithium chloride, and an air-stabilizing modifier are ball-milled in a ball mill jar, then placed in a vacuum annealing furnace for crystallization to obtain the air-stabilized lithium-phosphorus-sulfur-chlorine solid electrolyte. Lithium nickel cobalt manganese oxide active material, acetylene black, polyvinylidene fluoride, a thiophene heterocyclic polymer adhesive, and N-methylpyrrolidone are stirred evenly to prepare a positive electrode slurry, which is coated onto an aluminum foil current collector, vacuum dried, and rolled to obtain a positive electrode sheet. The positive electrode sheet, the air-stabilized lithium-phosphorus-sulfur-chlorine solid electrolyte, and a lithium metal sheet are sequentially stacked and hot-pressed to obtain a lithium-ion solid-state battery. This invention effectively improves ionic conductivity, has low moisture absorption, and exhibits excellent air stability.

The application discloses a novel green synthesis process of thiodicarb, which uses chlorinated sulfur, methomyl and pyridine as raw materials to prepare thiodicarb, replaces sulfur dichloride in the traditional process with low-cost chlorinated sulfur, reduces the cost of raw materials, uses pyridine as alkalizing agent and solvent, dissolves methomyl in pyridine, makes the reactants in the liquid phase system, is beneficial to mass transfer, heat transfer and improves the reaction effect, removes the water washing process, uses methanol as a washing agent to wash the product, and avoids the problem of large amount of waste water in the conventional process. Under the process operation condition, the conversion rate of methomyl reaches 98.5%, the yield of thiodicarb reaches more than 92.1%, and no waste water is generated in the main process. The prepared thiodicarb is white powder, the colors of products of each batch are consistent, the content is greater than 97.6%, the thermal decomposition rate is less than 2.4%, and the appearance, content and thermal storage stability of the product meet the product standards.

This invention provides a method for hydrolyzing sulfur monochloride, relating to the field of sulfur monochloride treatment technology. The method includes: adding water by adding 1.5 cubic meters of room-temperature clean water to the interior of a 3-cubic-meter reactor body; adding sulfur monochloride through a feeding mechanism; stirring by activating a stirring mechanism inside the top cover; heating by maintaining stirring for one hour after adding the material, and introducing steam into the reactor jacket to raise the temperature inside the reactor to above 100°C until hydrolysis is complete; and by setting a feeding mechanism inside the top cover, when the pressure inside the reactor body becomes too high, a piston is pushed upwards, causing the connecting strip on the outer surface of the piston to slide inside the spiral groove, causing the first feeding pipe to rotate until the piston rises to the top, completely displacing the first and second feeding holes, thereby stopping the addition of sulfur monochloride to prevent incomplete reaction of the sulfur monochloride.