48 results about "Sulfuryl fluoride" patented technology

The application provides a preparation method of sodium bisfluorosulfonimide, which comprises the following steps: (1) sulfuryl fluoride and hexamethylsilazane are reacted in an inert atmosphere to obtain a crude product, and the crude product is subjected to gas phase separation to obtain bisfluorosulfonimide; (2) the bisfluorosulfonimide obtained in the step (1) is reacted with sodium fluoride to obtain the sodium bisfluorosulfonimide. The sulfuryl fluoride and the hexamethylsilazane are used as raw materials to prepare the bisfluorosulfonimide by one-step method, the cost is reduced, and the production safety is improved, then the sodium bisfluorosulfonimide is prepared by ion exchange reaction of the bisfluorosulfonimide and sodium fluoride, the three wastes and solvent use are reduced, the impurities are reduced, and the production safety and product quality are improved.

The invention relates to the technical field of chemical synthesis, and discloses a preparation method of anhydrous N, N-dimethyl amino sulfuryl fluoride, which comprises the following steps: (1) introducing sulfuryl fluoride gas into a dimethylamine organic solution to carry out nucleophilic substitution reaction, and then adding triethylamine to obtain a mixed solution containing N, N-dimethyl amino sulfuryl fluoride; and (2) sequentially carrying out normal-pressure rectification and reduced-pressure rectification on the mixed solution containing the N, N-dimethyl amino sulfonyl fluoride to obtain the N, N-dimethyl amino sulfonyl fluoride. According to the method, water is not introduced in the whole process, the risk of water residue is avoided, and the prepared product is high in yield and purity.

The invention belongs to the technical field of chemical engineering and fine fluorine chemical synthesis, and particularly relates to a preparation method of sulfuryl fluoride chloride. According to the preparation method, through the synergistic effect of a gas-liquid reaction system and a closed-loop circulation system, a tertiary amine hydrofluoric acid adduct (such as Et3N.nHF, n = 2-6) is used as a fluorinating reagent, sulfuryl fluoride chloride is generated through a rapid cross-flow reaction in excessive sulfuryl chloride (SO2Cl2) under the conditions that the temperature is 65-100 DEG C and the pressure is 0.5-2.0 MPa, and a liquid-phase byproduct tertiary amine hydrochloride hydrogen fluoride adduct (such as Et3N.HCl. (n-1) HF) is used for preparing the sulfuryl fluoride chloride. Supplementing hydrogen fluoride to regenerate the catalyst and recycling; and after a gas-phase product is pressurized, rectified and purified by a light component removal tower and a heavy component removal tower, totally returning a light component (Cl2 / SO2) and a heavy component (SO2Cl2) to a synthesis system for recycling. According to the method, the reaction temperature, the reaction pressure, the liquid phase dispersion degree and the contact time are accurately controlled, so that the reaction product generates SO2FCl with high selectivity, and the byproduct (R3N.HCl. (n-1) HF) is kept in a liquid phase, so that the reaction can be continuously carried out, and conditions are created for subsequent treatment.

The invention discloses a preparation method of sulfuryl fluoride and the sulfuryl fluoride. The preparation method comprises the following steps: mixing fluoride salt powder and an anti-sticking agent to obtain a mixture; introducing sulfuryl chloride gas into the mixture for reaction to prepare sulfuryl fluoride; wherein the anti-sticking agent is used for preventing the fluoride salt powder from being stuck. According to the technical scheme, the production cost is reduced, the product purity is improved, and the method is suitable for industrial production.

The invention discloses a method for preparing mildew-proof and insect-resistant wood by adopting a sulfuryl fluoride modification strategy and application of the mildew-proof and insect-resistant wood, belongs to the field of wood chemical modification, and aims to solve the problems that mildew-proof and insect-resistant active ingredients are easy to migrate and lose, the environmental toxicity is high and the like in an existing wood protection method. According to the method, sulfuryl fluoride (SO2F2) is utilized to react with phenolic hydroxyl groups in wood in the presence of alkali to generate covalent linkage of aryl fluorosulfate (Ar-O-SO2F), so that wood modification is realized. The reaction is simple and feasible, and can be carried out under mild conditions. The shape of the wood modified through sulfuryl fluoride is kept, and the wood shows stable performance in the aspects of mildew prevention, insect resistance and the like. The modification method does not depend on transferable effective components, can provide a lasting protection effect for wood, and has a wide application prospect.

The invention provides a method for preparing sulfuryl fluoride without loss by using a catalyst. According to the method, a tertiary amine catalyst is used for catalyzing a liquid phase reaction with sulfuryl chloride (or sulfur dioxide and chlorine) and hydrogen fluoride as raw materials, and sulfuryl fluoride gas and hydrogen chloride gas are obtained. By controlling the amount of hydrogen fluoride added into the system, the tertiary amine is not separated out as a solid precipitate while being used as a catalyst, but still exists in a liquid phase reaction system for cyclic utilization, so that the reaction can be continuously carried out without continuously adding the catalyst. According to the method, the production cost of the sulfuryl fluoride is reduced, the purity and yield of the sulfuryl fluoride are improved, waste needing follow-up treatment is not generated, and the method is suitable for industrial production.

The present invention relates to a synthesis method for sulfate ester (amine) type linker polymer, which comprises a monomer containing hydroxyl or amino group and sulfuryl fluoride monomer proceeding a polycondensation reaction under a basic condition by one-pot process. As compared to the traditional polyester synthesis method, the present invention is economical; the reaction conditions are mild and easy to control, the reaction process is simple and easy to operate; the post-treatment process is simple with little environmental pollution, which is beneficial to industrial production. In addition, the bisphenol type polysulfate ester compounds synthesized by the present invention have excellent mechanical performances, dielectric performances, tolerance performances, and abrasion resistance performances.

The utility model relates to the technical field of metering equipment, in particular to sulfuryl fluoride metering equipment for granary fumigation, which comprises a metering cylinder, a piston, an air outlet pipe and a driving component, a plurality of metering cavities are arranged in the metering cylinder in an array manner, a distribution cavity is arranged at the bottom of the metering cylinder, the distribution cavity is unidirectionally communicated with the metering cavities, and the piston is arranged in the piston. The distribution cavity is communicated with a sulfuryl fluoride source, the piston is connected into the metering cavity in a sliding mode, the air outlet pipes correspond to the metering cavity in a one-to-one mode and are communicated with the metering cavity, the free ends of the air outlet pipes extend out of the metering cylinder, and the driving assembly is used for driving the piston to slide up and down in the metering cavity. According to the sulfuryl fluoride metering equipment for grain fumigation, disclosed by the utility model, one or more granaries can be fumigated at the same time.

A pretreatment process for an anode for an electrochemical battery cell, comprising the following steps: a) supplying an anode, b) placing the anode in the presence of sulfuryl fluoride (SO2F2) gas until a layer comprising the -F and -SO2F groups forms on the surface of the anode, c) removing the SO2F2 gas to stop the reaction between the SO2F2 and the anode material, and d) recovering the pretreated anode obtained.

The utility model belongs to the technical field of synthesizing devices, and particularly relates to a synthesizing device of sulfuryl fluoride. The sulfuryl fluoride synthesizer comprises a reaction kettle (1), a condenser (2) and a venturi reactor (3), the reaction kettle (1) is connected with the condenser (2), two pipelines are arranged at the top of the reaction kettle (1), one pipeline is connected with the bottom of the venturi reactor (3), the other pipeline is connected with the side face of the venturi reactor (3), and the venturi reactor (3) is connected with the condenser (2). And a pipeline at the bottom of the reaction kettle (1) is connected with the top of the Venturi reactor (3). The utility model provides a sulfuryl fluoride synthesizer, which is suitable for liquid phase reaction, further improves the conversion rate of reaction, improves the purity and yield of products, and is small in toxic and side effects, low in risk and environment-friendly.

The invention discloses a method for recovering triethylamine in a preparation process of bis (fluorosulfonyl) imide triethylamine salt, which comprises the following steps: (a) taking sulfuryl fluoride, ammonia gas and triethylamine as raw materials, and reacting in an organic solvent to obtain a reaction solution containing bis (fluorosulfonyl) imide triethylamine salt and triethylamine hydrofluoride; (b) adding a phase transfer catalyst and an inorganic alkaline substance, and carrying out heat preservation reaction; (c) filtering to obtain solid fluoride salt and filtrate; and (d) carrying out vacuum evaporation concentration on the filtrate to obtain a concentrate and a triethylamine-containing recovered solvent, and using the triethylamine-containing recovered solvent for the next batch of reaction. According to the method, under the action of the phase transfer catalyst, the added inorganic alkaline substance reacts with the triethylamine hydrofluoride to generate the solid fluoride salt and dissociate the triethylamine, and the triethylamine can be recovered through vacuum evaporation and concentration, so that the method is simple to operate and convenient for industrial implementation, the triethylamine recovery cost is greatly reduced, and the method is suitable for industrial production. Meanwhile, the wastewater treatment difficulty is also reduced.

The utility model discloses a detector for the concentration of sulfuryl fluoride in a granary, and belongs to the technical field of concentration detectors. Comprising a remote control trolley, a rotating assembly is arranged at the top end of the remote control trolley, a rotating block is rotationally arranged in the rotating assembly, a detector body is arranged at the top end of the rotating block in a clamped mode through a clamping assembly, a first warning lamp and a second warning lamp are arranged on the remote control trolley side by side, and a power storage plate is carried in the remote control trolley. According to the device, the detector body is placed on the placement plate, the two clamping plates clamp the two sides of the detector body by pulling the two clamping plates and synchronously compressing the spring pieces, rapid fixing is achieved, the clamping pad has the anti-skid effect, the detector body can be rapidly carried on the remote control trolley, and the detection efficiency is improved. The remote control trolley is controlled to move to enter the granary, personnel can control outside the granary, and the situation that poisonous sulfuryl fluoride gas is inhaled in the granary is avoided.

The application discloses a method for preparing sulfuryl fluoride by using sulfuryl chloride as raw material. After sulfuryl chloride is gasified, the sulfuryl chloride is reacted with an amine complex of hydrogen fluoride in a pipeline reactor to obtain sulfuryl fluoride. The pipeline reactor is in a two-stage series connection, the heating temperature of the first stage is 100-350 DEG C, and the heating temperature of the second stage is 150-450 DEG C. The method can effectively improve the conversion rate and yield of the product and is easy to be industrialized.

The application provides a synthesis method of difluorosulfimide. The method comprises the following steps: under nitrogen protection, fluorosulfonic acid, aminosulfonic acid and a catalyst are added into a reaction container, stirring is performed, and the temperature is raised to a reaction temperature; then sulfuryl fluoride is introduced, and the reaction is kept under temperature while the sulfuryl fluoride is introduced; after the reaction is completed, the difluorosulfimide is obtained through rectification. The method is simple in process, can quickly and efficiently synthesize difluorosulfimide, and the obtained difluorosulfimide has high yield and high purity.

The utility model discloses a sulfuryl fluoride dosing meter for grain fumigation, and belongs to the technical field of sulfuryl fluoride metering. Comprising a sulfuryl fluoride metering body, a temperature and pressure compensation part is arranged in the sulfuryl fluoride metering body, flanges are symmetrically arranged on the two sides of the sulfuryl fluoride metering body, and the two sides of the two flanges are connected with an air outlet pipe and an air inlet pipe correspondingly. The spacing between the air outlet pipe and the air inlet pipe can be lengthened, so that the sulfuryl fluoride metering main body can be conveniently mounted, one end of the sulfuryl fluoride metering main body is clamped with the air inlet pipe end, a limiting rod is loosened for limiting, a spring piece is restored, a sliding rod slides towards the interior of a hollow piece, and the air outlet pipe end actively approaches the sulfuryl fluoride metering main body end for clamping; through inward extrusion positioning installation of the spring piece, rapid assembly of the sulfuryl fluoride metering body is achieved, many nut limitations are reduced, and disassembly is labor-saving.

The application belongs to the technical field of sulfuric fluoride preparation method, and particularly relates to a method for continuously preparing sulfuric fluoride in a fluidized bed, which comprises the following steps: S1, using carbon tetrafluoride as a working gas, adopting plasma pretreatment on a hydrogen fluoride-amine complex for standby; S2, preheating the fluidized bed to 150-180 DEG C, adding fluorinated salt powder and the pretreated hydrogen fluoride-amine complex into the fluidized bed, and heating to 190-200 DEG C; after gasification, preheating sulfuric chloride to 100-120 DEG C, and then introducing into the fluidized bed for two-stage heating reaction; S3, gas-solid separation, washing and drying the gas, and thus sulfuric fluoride is obtained. The application combines plasma treatment with the fluidized bed, improves the synthesis efficiency, reduces the generation of by-products, and improves the product purity.

The utility model belongs to the technical field of sulfuryl fluoride preparation equipment, and particularly relates to a reactor for preparing sulfuryl fluoride, which comprises a bottom frame, an outer barrel fixedly connected to the top of the bottom frame, a reaction barrel fixedly connected to the inside of the outer barrel, a bearing fixedly connected to the inner side of the reaction barrel, and a rotating frame fixedly connected to the inner side of the bearing. The rotating shaft drives the inner ring to rotate so as to drive the connecting rods to enable the outer ring to drive the spiral columns to rotate, the spiral columns are rotated by starting the motor, and the upper and lower adjacent spiral columns are arranged in a staggered manner, so that potassium fluoride particles attached to the outer sides of the spiral columns can be in full contact with sulfur dioxide and fluorine gas, and the reaction is more thorough; therefore, the preparation efficiency is improved.

The present application relates to a method for preparing sulfuryl fluoride, the method comprising: (1) providing a reaction stream comprising an organic base-hydrogen fluoride complex; (2) introducing sulfur dioxide and chlorine into the reaction stream comprising the organic base-hydrogen fluoride complex, and reacting to form a product stream comprising sulfuryl fluoride. The method described in the present application has mild reaction conditions, high product yield and purity, material recycling, less waste, etc., and is suitable for industrial production.

The invention relates to the related technical field of sulfuryl fluoride pipeline conveying and filtering devices, in particular to an efficient filtering device for a sulfuryl fluoride conveying pipeline, which comprises a shell, a round pipe is arranged on the outer wall of the shell, an air conveying pump is fixedly assembled at the tail end of the round pipe, and a sealing ring is fixedly assembled on the inner wall of the shell. A first fixing plate and a second fixing plate are fixedly assembled on the inner wall of the shell. In the using process of the device, when the filter screen is blocked due to excessive impurities, air can be accumulated between the blocked filter screen and the sealing ring, so that the air pressure is continuously increased to push the filter screen to move, the sliding block extrudes the spring, and then the filter screen is moved out to be separated from the first sealing block and the second sealing block; gas enters a circular groove by opening a first electromagnetic valve, and a circular rod rotates to automatically replace a filter screen by matching with opening of a second electromagnetic valve, so that the filtering effect of the device on sulfuryl fluoride is improved, and the automation of the device is also improved.

The invention provides an electrochemical gas sensor and a preparation method thereof, and the electrochemical gas sensor comprises a housing which is provided with a mounting groove, and the groove opening of the mounting groove is located at the top of the housing; the isolating membrane covers the notch, and chemical gas can enter the mounting groove through the isolating membrane; the composite electrode layer is arranged in the mounting groove and divides the mounting groove into a liquid storage cavity and a containing cavity, the containing cavity is used for containing the composite electrode layer, the liquid storage cavity is used for storing alkaline electrolyte, and the electrolyte is in contact with the bottom of the composite electrode layer; and the electrode connecting piece is arranged on the shell and is used for electrically connecting the composite electrode layer with an external circuit board. According to the electrochemical gas sensor provided by the invention, the sulfuryl fluoride detection sensitivity is improved, so that the sulfuryl fluoride use safety is improved.

The application discloses anthraquinone-based polysulfate and a preparation method and photocatalytic application thereof, and belongs to the field of polymer material synthesis and photocatalytic technology. The polysulfate takes 2,6-dihydroxyanthraquinone derivative as a core monomer, is connected through a sulfate bond to form a conjugated polymer, and has excellent visible light absorption capacity and electron transport performance. The preparation method takes 2,6-dihydroxyanthraquinone as a starting material, synthesizes a double silyl ether protected anthraquinone intermediate and a thiofluoride activated anthraquinone intermediate respectively, and finally performs polycondensation on the two intermediates under a potassium hydrogen fluoride / crown ether catalytic system. The material can catalyze hydrogen peroxide to be generated from water and oxygen under visible light irradiation, and the yield reaches 2667 μmol·h ‑1 ·g ‑1 , is a new type of efficient photocatalytic material, and has wide application prospects in the fields of green synthesis and environmental catalysis.

The method comprises the following steps: setting the temperature of a reaction kettle to be-5 to 0 DEG C and the pressure of the reaction kettle to be 0.01 to 0.1 MPa, adding lithium fluoride and hydrogen fluoride into the reaction kettle, after the lithium fluoride is completely dissolved in the hydrogen fluoride, respectively introducing sulfuryl fluoride and ammonia gas, keeping the temperature of the reaction kettle to be-5 to 0 DEG C and the pressure of the reaction kettle to be 0.01 to 0.1 MPa, reacting for 1 to 5 hours, and after the reaction is finished, filtering, washing and drying to obtain the lithium bis (fluorosulfonyl) imide. Absorbing gaseous substances, and purifying to obtain a target product. According to the method, one-pot reaction is adopted, hydrogen fluoride is used as a reaction solvent, other solvents or catalysts are not used, chloride ions and other cations and anions do not exist, the product purity is improved, the product yield is high, the used raw materials are easy to obtain, the raw material cost is low, the preparation process is simple, the requirement for equipment is low, operation is safe, and aftertreatment is simple; the method is a green synthesis method.

The invention discloses a preparation method of sulfuryl fluoride and the sulfuryl fluoride. The preparation method comprises the following steps: mixing a liquid sulfur-containing oxide with a fluoride salt, and carrying out a liquid-solid reaction to obtain a fluorosulfonic acid compound; performing thermal decomposition on the fluorosulfonic acid compound to prepare sulfuryl fluoride; wherein the chemical formula of the fluorosulfonic acid compound is M (SO3F) X, M represents a metal cation or an ammonium ion, and x represents the valence of the metal cation or the ammonium ion. The preparation method is simple, and the prepared sulfuryl fluoride is high in purity and yield.

The application discloses a preparation method of sulfuryl fluoride, which comprises the following steps: (1) generating sulfonamide by reacting sulfuryl chloride with secondary amine; (2) purifying the sulfonamide and collecting amine hydrochloride; (3) generating sulfuryl fluoride by reacting the sulfonamide with a fluorinated salt; and (4) recovering the secondary amine. The preparation method of the sulfuryl fluoride is simple in synthesis method, low in reaction temperature, simple in operation, low in requirement for equipment, high in synthesis efficiency, free of by-products, and suitable for industrialized scale production as water is used as a solvent.

A process for manufacturing a composite powder for an electric battery, comprising the following steps: a) placing at least one alkali metal, such as lithium, potassium, sodium or a mixture thereof, under an inert atmosphere, b) injecting sulfuryl fluoride (SO2F2) gas and, simultaneously, applying mechanical grinding to said alkali metal, until the formation of a powder comprising particles of said alkali metal having -F and -SO2F groups on the surface, and c) recovering the resulting powder.

The utility model relates to the technical field of gas metering control, and provides a sulfuryl fluoride gas metering control device which comprises a gas storage box provided with a storage cavity used for storing acyl fluoride gas, and further comprises a gas outlet pipe arranged on the gas storage box and provided with a second connector. The gas storage box is provided with a first connector, the first connector and the second connector are provided with a first circulation channel and a second circulation channel respectively, the first circulation channel and the second circulation channel are both communicated with the storage cavity, and after the first connector and the second connector are connected, the first circulation channel and the second circulation channel are opened. An air outlet nozzle is arranged on the side, away from the second connector, of the air outlet pipe and communicates with the second circulation channel. The problem that the flexibility and practicability of the device are limited by a non-detachable structure in the prior art is solved.

The application relates to a one-pot synthesis method of beta-nitro alcohol by taking an alcohol compound as a starting raw material, which is characterized by the following steps: taking an alcohol and a nitro compound as raw materials, reacting under the action of sulfuric fluoride gas and an alkaline catalyst at room temperature, and separating and purifying to obtain a beta-nitro alcohol compound; the beta-nitro alcohol compound has the following structural formula: wherein R1 and R2 are phenyl, substituted phenyl, heterocyclic aryl, fused ring aryl, substituted fused ring aryl, alkyl or hydrogen atom; R3 and R4 are aryl, hydrogen atom or alkyl. The conversion method of the beta-nitro alcohol by the alkali promotion of the alcohol directly realizes the construction of a C(sp3)-C(sp3) bond, the reaction condition is mild, the operation is simple, the requirement of instrument equipment is low, the alcohol is used as the reaction raw material, the price is low, the source is wide, the yield of the prepared beta-nitro alcohol compound is high, the substrate application range is wide, most functional groups can be tolerated, and a new path is provided for the synthesis of complex beta-nitro alcohol.

The present application relates to the technical field of lithium battery, and in particular to a method for preparing lithium bisfluorosulfonimide from methylsilazane; the method uses sulfuryl fluoride, methylsilazane, basic lithium, and resin-based diacid adsorbent as raw materials to synthesize lithium bisfluorosulfonimide, and has the advantages of easy availability, low price, simple operation, and high total yield; the method uses a low-temperature reaction when adding basic lithium, thereby avoiding the warming operation of the final product and ensuring the quality of the product; the method has the advantages of low production cost, few by-products, and simple post-treatment; the lithium bisfluorosulfonimide prepared by the method has a purity of 99.99% and a yield of 95.96%, and is suitable for industrial production.

The application discloses a kind of photoresponsive nanochannel membranes and its preparation method and application.The preparation method is: photoresponsive molecule of sulfuryl fluoride is dissolved in acetonitrile solution containing catalyst, grafting solution is obtained;Covalent organic framework composite membrane is soaked in grafting solution and placed to react, and photoresponsive nanochannel membrane is obtained.Covalent organic framework composite membrane is obtained by adding equal volume of amino monomer aqueous solution and aldehyde monomer organic phase solution on both sides of porous substrate, and placed to react.The application is first grafted to the covalent organic framework membrane pore by SuFEx reaction, photoresponsive molecule, so that the nanochannel membrane prepared has photoresponsive, and the pore size is less than the hydration diameter of ion to be separated in salt lake brine;Lithium ion can be precisely and efficiently filtered, and is expected to be popularized and applied in salt lake lithium extraction.

The application relates to the field of soil improvement, and specifically discloses a soil fumigant for preventing and treating soil-borne diseases and application. The soil fumigant is a sulfuryl fluoride compound, and one fluorine atom in the sulfuryl fluoride structure is replaced by a short-chain alkyl group, a short-chain alkenyl group or a halogenated short-chain alkyl group. The soil fumigant has a broad-spectrum effect on the prevention and treatment of soil-borne pathogenic fungi, bacteria, pythium and root-knot nematodes, is a high-value crop soil-borne disease prevention and control product, and solves the problem of shortage of existing soil fumigants.