16 results about "Sulfuryl fluoride" patented technology

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 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.

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 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 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 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 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 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.

The present application relates to the technical field of lithium battery, and in particular to a method for preparing lithium bisfluorosulfonimide by using sulfuric fluoride; the present application adopts sulfuric fluoride, ammonia gas, organic base, solvent and lithium hydroxide to prepare lithium bisfluorosulfonimide; the present application firstly purifies preliminarily through distillation and extraction, then filters, and further removes trace impurity components in the crude product after adsorption by fluoric acid group molecular sieve, so as to obtain high-purity lithium bisfluorosulfonimide; the process route of the present application avoids the generation of waste gas such as SO2 and HCl, and is more in line with environmental protection requirements; the present application has the advantages of simple process, strong operability, very obvious purification effect and the like, and has the conditions for industrial production.

The utility model relates to a portable sulfuryl fluoride gas quantitative control device which comprises a machine case shell, an alarm is fixedly installed on the left side of the front face of the machine case shell, a ventilation hole is formed in the middle of the front face of the machine case shell, and a battery bin is fixed to the top of the right side of the front face of the machine case shell. An air inlet connector is fixed to the center of the left side of the case shell, an air outlet connector is fixed to the center of the right side of the case shell, and four movable pulleys are fixed to the bottom face of the case shell. By arranging the movable pulleys, the device can be conveniently pushed to move, the practicability is improved, meanwhile, the device is controlled through the controller to achieve the automatic quantification process, final data are displayed through the display screen, manual guarding is not needed, the poisoning risk is reduced, safety is higher, and meanwhile efficiency is higher; after dosing is completed, residual gas in a system pipeline can be discharged to a feeding point or a safe collecting device through the fan.

The invention discloses a method for preparing bis (fluorosulfonyl) imide organic alkali salt, which comprises the following steps: (a) adding a solvent into a reactor, and then adding an organic alkali, an inorganic alkaline substance and a phase transfer catalyst; (b) controlling the reaction temperature, simultaneously introducing sulfuryl fluoride and ammonia gas into the reactor, and keeping the temperature after the introduction is finished; (c) filtering to obtain solid fluoride salt and filtrate; and (d) concentrating the filtrate, and washing the obtained concentrate to obtain the bis (fluorosulfonyl) imide organic alkali salt. The method has the advantages that under the action of the phase transfer catalyst, the inorganic alkaline substance can react with the organic alkali hydrofluoride to generate the solid fluoride salt, and meanwhile, the organic alkali is dissociated, so that not only is the selectivity of the reaction ensured, but also the consumption of the organic alkali is greatly reduced, the operation is simple, and industrial implementation is facilitated.

The invention relates to the field of synthesis of industrial chemicals, in particular to a preparation method of sulfuryl fluoride. The preparation method comprises the following steps: taking a sulfuryl source, tertiary amine and hydrogen fluoride (or tertiary amine-hydrogen fluoride associate) as raw materials, and obtaining sulfuryl fluoride and hydrogen chloride under the action of a transition metal catalyst. According to the method, a transition metal catalyst is used for catalyzing a liquid phase reaction with sulfuryl chloride (or sulfur dioxide and chlorine) and hydrogen fluoride as raw materials, the target product sulfuryl fluoride is obtained, meanwhile, byproducts of hydrogen chloride are obtained, the transition metal catalyst, tertiary amine and hydrogen fluoride are recycled in the production process, and hydrogen chloride is separated from a system. 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.