242 results about "Sulfuryl fluoride" patented technology

The invention relates to a SiO2/perfluorinated sulfonic resin compound proton exchange membrane and a preparation method thereof, which is composed of perfluorinated sulfonic resin and SiO2 doped with cerium or/and manganese. The perfluorinated sulfonic resin is H-type resin with sulfonic acid groups or F type resin with sulfuryl fluoride groups with the equivalent value of 600-1,300g/mmol. The compound proton exchange membrane prepared in the invention has higher proton conductivity and mechanical strength, can effectively prevent penetration of hydrogen and methanol, and is favor of improvement of fuel cell property.

The invention discloses a preparation method for lithium bis(fluorosulfonyl)imide. The preparation method comprises the following steps: 1) preparing fluorine sulfamide lithium; 2) preparing sulfuryl fluoride, and pumping the sulfuryl fluoride into the fluorine sulfamide lithium solution, and adding an acid-binding agent to prepare bifluorine sulfimide ammonium salt; 3) dissolving the bifluorine sulfimide ammonium salt in water solution, to obtain bifluorine sulfimide water solution through the acid resin exchange; 4) adding lithium carbonate, regulating the PH value to be neutral, filtering and removing undissolved substances, depressurizing and removing the most of the water, and adding a weak-polarity organic solvent to separate out a coarse product of the lithium bis(fluorosulfonyl)imide, further depressurizing and drying; and 5) adding a polarity solvent to the coarse product of the lithium bis(fluorosulfonyl)imide, stirring and dissolving, filtering and removing the undissolved substances, depressurizing and removing a strong-polarity solvent, and adding the weak-polarity organic solvent to perform the recrystallization, and depressurizing and drying to obtain a product after filtering. The preparation method is simple, the reaction time is short, the yield is high, and metal ion and negative ion impurities can be effectively controlled, so that the product with the high purity can be obtained.

The invention relates to a flame retardant sodium-ion battery electrolytic solution and application thereof. The electrolytic solution comprises the following ingredients with the concentration: 0.001-2mol/L sodium salt, carbonate esters and/or ether organic solvents, 0.1-50% of a flame retardant additive and 0-0.5mol/L other functional additives. The flame retardant sodium-ion battery electrolytic solution is applied into a sodium primary battery, a sodium secondary battery and a sodium ion battery. A sulfuryl fluoride base group-containing compound has good flame retardance, has little influence on the electrochemical performance and can be used as a novel electrolytic solution flame retardant additive; the flame retardant additive is added into the electrolytic solution, so that the combustibility of the electrolytic solution can be reduced. A phosphonitrile base group-containing compound has good flame retardance, has little influence on the electrochemical performance, and can be used as a novel electrolytic solution flame retardant additive; the flame retardant additive is added into the electrolytic solution, so that the combustibility of the electrolytic solution can be reduced. After the electrolytic solution is applied to the sodium battery, the combustion possibility of the electrolytic solution is zero.

The invention relates to the field of organic synthesis, in particular to a preparation method of cyclic sulfate. The structural formula of cyclic sulfate is shown as formula I. The preparation methodof cyclic sulfate comprises the following step: cyclic sulfate in the formula I is prepared from a compound in formula II and sulfuryl fluoride by reacting in the presence of an acid binding agent and a catalyst. The preparation method of cyclic sulfate adopts short reaction step, cyclic sulfate can be prepared with the one-step reaction, cost of raw and auxiliary materials is low, and expensiveraw materials and oxidizing agent are not used.

The invention relates to a polymerization method of an (ammonium) sulfate connexon polymer. The polymerization method comprises a step of subjecting a hydroxyl-containing monomer or an amino-containing monomer and a sulfuryl fluoride monomer to condensation polymerization on through a one-pot process under alkaline conditions. Compared with a traditional polyester synthesis method, the method is cost-saving; reaction conditions are mild and easy to control; reaction flow is simple, and operation is easy; and a post-treatment process is simple, environmental pollution is small, and industrial production is facilitated. In addition, a bisphenol type polysulfate compound synthesized in the invention has excellent mechanical properties, dielectric properties, tolerance and wear resistance.

The invention discloses a preparation method of lithium bis (fluorosulfonyl) imide. The preparation method comprises the following steps: (1) in the presence of an ammonia source, an organic solvent,fluoride salt and an initial amount of sulfuryl fluoride, slowly introducing organic alkali while continuously introducing the balance of sulfuryl fluoride until the reaction is finished, and directlycarrying out reduced pressure distillation on the reaction solution to obtain an intermediate, namely the difluorosulfonyl imide salt; and (2) in the presence of an organic solvent, adding lithium oxide powder into the intermediate imidodisulfuryl fluoride salt, filtering, concentrating, adding a non-aqueous poor solvent, and crystallizing to obtain lithium bis (fluorosulfonyl) imide.

It was found that a fluoro derivative can be produced by reacting a hydroxy derivative with sulfuryl fluoride (SO₂F₂) in the presence of an organic base or in the presence of an organic base and “a salt or complex comprising an organic base and hydrogen fluoride”. According to the present production process, it is not necessary to use perfluoroalkanesulfonyl fluoride, which is not preferable in industrial use, and it is possible to advantageously produce optically-active fluoro derivatives, which are important intermediates of medicines, agricultural chemicals and optical materials, specifically 4-fluoroproline derivatives, 2′-deoxy-2′-fluorouridine derivatives, optically-active α-fluorocarboxylate derivatives, and the like, even in a large scale.

The invention provides a functional perfluoro resin with sulfuryl fluoride and sulphonate lateral-group, belonging to the field of fluorine-containing high molecular materials. The functional perfluoro resin is prepared by multiply copolymerizing tetrafluoroethylene, two sulfuryl fluoride lateral-group vinyl ether monomers of different structures, two sulphonate lateral-group vinyl ether monomers which are respectively correspond to the sulfuryl fluoride lateral-group vinyl ether monomers of different structures, wherein the total mole fraction of the tetrafluoroethylene is 50-90.9 percent of a copolymer, the total mole fraction of the sulfuryl fluoride lateral-group vinyl ether monomers is 8.8-49.99 percent, and the total mole fraction of the sulphonate lateral-group vinyl ether monomers is 0.01-0.3 percent. A perfluoro ion exchange membrane prepared by the functional perfluoro resin not only has chemical mediator resistance, but also has high conductivity, mechanical strength and dimension stability, low membrane resistance and long service life, and is suitable for fuel cells or chlor-alkali electrolytic cells. The invention also provides a preparation method and application of the functional perfluoro resin.

The invention provides a perfluorosulfonic composite proton exchange membrane for a fuel cell and a preparation method thereof. Perfluorosulfonic resin formed by perfluorosulfonic resin, M-type perfluorosulfonic resin and porous polymer enhanced materials is H-type resin with sulfonic acid groups (-SO3-) or F-type resin with sulfuryl fluoride groups (-SO2F-). The M-type perfluorosulfonic resin is cerium or/and manganese metal ion type perfluorosulfonic resin formed in a way that cerium or/and manganese ions are fully exchanged with sulfonic acid groups or sulfuryl fluoride groups in perfluorosulfonic resin. Cerium or/and manganese ions can be evenly distributed on the membrane body, the thermal stability is high, the heat treatment temperature of the composite membrane is improved, the combination of the porous polymer enhanced materials with the perfluorosulfonic resin is facilitated, the prepared composite proton exchange membrane has good mechanical strength and proton conductivity capacity, and the performance of the fuel cell is improved.

The invention belongs to the technical field of gas pollutant treatment, in particular relates to an innocent treatment method for sulfuryl fluoride gas. The method comprises the following steps of: dividing a plasma reactor serving as a reactor into two stuffing cavities between two electrodes by gas distribution baffles at both ends and a porous baffle in the middle; and introducing sulfuryl fluorid-containing gas into the plasma reactor from a gas inlet, performing oxidization reaction and degradation reaction on the sulfuryl fluorid-containing gas and high-energy electrons and active particles which are generated by electric discharge and reacting with secondary stuffing in the plasma reactor and absorbing under the action of nonequilibrium plasma to generate non-toxic and innocent gas without greenhouse effect and discharging from a gas outlet. The method has the advantages that the sulfuryl fluoride is oxidized and degraded under the action of the nonequilibrium plasma by adopting a mode that the discharge plasma and the stuffing are in the same electric field simultaneously, and reacts with the stuffing loaded in the reactor simultaneously to be absorbed so as to promote the reaction to perform towards the innocent direction, and improve the desorption efficiency, and thus the utilization ratio of energy is improved.

The invention discloses a preparation method of bis(fluorosulfonyl)amine. The preparation method comprises the following steps of enabling SO2F2 (sulfuryl fluoride), NH4F (ammonium fluoride) and triethylamine to react to prepare organic alkaline salt of bis(fluorosulfonyl)amine; performing replacing reaction with strong acid, and performing pressure-relief distillation, so as to obtain high-puritybis(fluorosulfonyl)amine. The preparation method has the advantages that the SO2F2, the NH4F and the organic alkaline are used as the raw materials, and the FSO3H (fluorosulfonic acid) with strong corrosion property is not used as the raw material; the technology is simple, the continuous operation property is strong, the product is easy to separate and purify, the high-purity (more than or equalto 99%) bis(fluorosulfonyl)amine can be prepared, and the yield rate reaches 90% or above; the chloride ion is not used in the whole reaction process, and the product quality is stable.

The invention relates to a preparation method of imidodisulfuryl fluoride lithium salt. The preparation method comprises the following steps: (1) performing a fluorination reaction of imidodisulfuryl chloride by taking a hydrogen fluoride complex salt as a fluorinating agent in the presence of a solvent, the fluorinating agent and an initiator, performing filter pressing separation at the end of the reaction, distilling filtrate under a reduced pressure to remove the solvent, and rectifying under a reduced pressure to obtain imidodisulfuryl fluoride; (2) reacting the imidodisulfuryl fluoride with a lithium compound at the temperature of 80 to 110 DEG C to obtain a crude imidodisulfuryl fluoride lithium salt. The preparation method provided by the invention has the advantages of easiness in operation of a fluorinating process route, mild conditions, high operability and easiness in implementation of industrial production; the prepared imidodisulfuryl fluoride lithium salt is 99 percent or more in purity, and is suitable for lithium batteries.

The invention relates to a process method for preparing high-purity trifluoromethane sulfonic acid. The process method comprises the following steps: firstly, hydrolyzing trifluoromethane sulfuryl fluoride gas prepared by an electrochemical fluorination method in alkaline metal or alkaline-earth metal hydroxide solution, recrystallizing the generated trifluoromethane sulphonate in a solvent to purify, and then reacting the trifluoromethane sulphonate with 100 percent of sulfuric acid in the presence of silicon dioxide to obtain an initial product of the trifluoromethane sulfonic acid, and finally purifying the trifluoromethane sulfonic acid through reduced pressure distillation. The process method not only effectively improves the hydrolysis speed of the trifluoromethane sulfuryl fluoride gas, leads the trifluoromethane sulfuryl fluoride gas to react more completely, and improves the yield, but also effectively reduces the content of F<-> in the trifluoromethane sulfonic acid product, and improves the purity of the product.

The invention belongs to the technical field of gas pollutant treatment and provides a method for removing sulfuryl fluoride by coupling plasma and chemical absorbing, which is used for removing residual sulfuryl fluoride gas after fumigating. The treatment process of the method comprises: introducing a gas containing sulfuryl fluoride into a plasma reactor, wherein the sulfuryl fluoride decomposes into harmful gas products including sulfur oxide and fluoride under the action of the plasma; and introducing the gas product of the reaction into a gas liquid absorbing tower to absorb the gas by alkali liquor, and thus removing the sulfuryl fluoride waste gas in a harmless manner. The method has the advantage that after the sulfuryl fluoride is removed by coupling a plasma technique and chemical absorption, the treated gas reaches national discharge standards. Compared with discharging the sulfuryl fluoride into the atmosphere through ventilation at present, the method protects natural environment and human health. In addition, with simple process flow and low operation cost, the method is more suitable for on-site use.

The invention discloses a method for preparing a perfluorohexane surfactant serving as a main agent of an aqueous film-forming extinguishing agent directly. The method comprises the following steps of: performing ammonolysis reaction of perfluorohexane sulfuryl fluoride and diamine which serve as raw materials under the action of a catalyst to synthesize an amino sulfonamide compound without separation, and performing quaterisation reaction of the amino sulfonamide compound and chloroacetate to prepare a perfluorohexane betaine amphoteric surfactant which can be used for the aqueous film-forming extinguishing agent directly. The method has the characteristics of simple requirement on equipment, stable and convenient process, low energy consumption and no pollution; and the aqueous film-forming extinguishing agent prepared from the perfluorohexane betaine amphoteric surfactant serving as the main agent is short in fire control time and high in fire extinguishing efficiency, and all indexes reach the national standards of the industry.

The invention relates to the field of organic synthesis, and especially relates to a sulfate preparation method. The invention provides a sulfate preparation method. According to the preparation method, a compound represented by a formula (II) reacts with sulfuryl fluoride in the presence of a reaction solvent to prepare a compound represented by a formula (I). During the sulfate preparation process, the introduction of water and chlorine ions is avoided effectively, the situation that the product is degraded and the chlorine ion content is high is avoided therefore; moreover, the steps of thepreparation method are simple and short, the raw material are common chemical products on the market, the kinds of raw materials and the side reactions are few, and the yield is high. The manufacturing cost is low, only recyclable organic solvents are used, the reaction byproduct is a single inorganic salt solid and can be easily recovered, no wastewater is generated, the environment is better protected, and the sulfate preparation method is green and environmentally friendly and is suitable for industrial large scale production.

The invention belongs to the technical field of medicine, and particularly relates to a preparation method of a protein kinase inhibitor fasudil hydrochloride. According to the method, as 5-isoquinoline sulfuryl chloride hydrochloride is adopted to react with homopiperzine directly, the problem that 5-5-isoquinoline sulfuryl chloride is easy to hydrolyze is avoided; and as fasudil hydrochloride is obtained by a direct water phase evaporating method, the problem that the extraction filtration of fasudil hydrochloride is difficult is solved. The preparation method is simple to operate, and higher in product yield and product purity.

The invention discloses a gas chromatography device for detecting sulfuryl fluoride in a sulfur hexafluoride decomposition product. The gas chromatography device comprises a sulfur hexafluoride separation device, a capillary column sampling device, a Gaspro chromatographic column, a micro-plate flow path control valve and a second sulfide detector, wherein the capillary column sampling device comprises a first inlet, a second inlet and a first outlet which are communicated with one another; the second inlet is communicated with the sulfur hexafluoride separation device; auxiliary gas is fed through the first inlet; the micro-plate flow path control valve comprises a third inlet, a second outlet and a third outlet; the Gaspro chromatographic column is respectively communicated with the first outlet and the third inlet; the second sulfide detector is communicated with the second outlet. The gas chromatography device for detecting the sulfuryl fluoride in the sulfur hexafluoride decomposition product, provided by the invention, can be used for accurately detecting the sulfuryl fluoride.

An optically active α-fluorocarboxylate is produced by reacting an optically active α-hydroxycarboxylate with sulfuryl fluoride (SO₂F₂), trifluoromethanesulfonyl fluoride (CF₃SO₂F) or nonafluorobutanesulfonyl fluoride (C₄F₉SO₂F) in the presence of organic base and in the absence of reaction solvent. More preferably, a distillation purification is conducted after adding acid to the reaction-terminated liquid. With this, it is possible to produce an optically active α-fluorocarboxylate of a still higher purity. It is possible by this process to advantageously produce an optically active α-fluorocarboxylate on a large-amount scale.

The invention relates to an ethylene sulfate preparation method, which comprises: dissolving ethylene glycol in an aprotic organic solvent, adding an aprotic organic alkali, introducing sulfuryl fluoride, stirring while reacting, filtering after the reaction is completed, and carrying out evaporating concentrating and drying on the filtrate to obtain ethylene sulfate. According to the invention, the ethylene sulfate prepared by the method has extremely high purity of more than 99.9%, low moisture content of less than or equal to 20 ppm and low acid value of less than or equal to 10 ppm, and effectively changes the influence of the moisture and the acid value in an electrolytic solution on the cycle performance and the storage stability of a battery.

The invention relates to a method for continuously synthesizing trifluoroacetyl chloride and sulfuryl fluoride, which comprises the following process: continuously introducing sulfur trioxide and trifluorotrichloroethane (F113a) into a reaction rectifying tower containing a catalyst and a filler thorough the lower part in the tower according to a mol ratio of 1:1, wherein the temperature of the tower is controlled to range between 120 DEG C and 130 DEG C, and the reflux ratio at the top of the tower is 2.5-3; introducing tower bottoms into a sulfuryl chloride separating tower for rectification and separation, wherein the tower temperature is 145-150 DEG C, and the reflux ratio is 0.5-1.0; returning pyrosulfuryl chloride in the separating tower to the middle upper part of the reaction rectifying tower, heating the sulfuryl chloride rectified off from the top of the tower to 150 DEG C, and then introducing the rectified sulfuryl chloride and preheated recycled and newly-added hydrogen fluoride gas into a reactor containing a palladium/charcoal catalyst, wherein the reaction temperature is controlled to range between 150 DEG C and 160 DEG C; separating out unreacted hydrogen fluoride from the reaction product through a cold trap, and returning to the reactor for further use; and then absorbing and separating hydrogen chloride through a falling film, drying, compressing, and condensing to obtain the sulfuryl fluoride. The invention has the advantage of easy acquisition of raw materials, and the sulfuryl chloride byproduct can be directly used for the synthesis of sulfuryl fluoride.

The invention discloses a preparation method of a fluorine-containing non-ionic surface active agent and an application. The preparation method comprises the steps of carrying out amidation reaction on perfluoroalkyl sulfuryl fluoride and N, N'-dimethyl (ethyl)-1, 3-propane diamine to obtain an intermediate 1; after refining, adopting acetone as a solvent to react with ethylene oxide or chlorethyl alcohol to obtain an intermediate 2 (N'-3-(dimethyl(ethyl))-propyl-(N-perfluorobutylsulfonyl-N-epoxy)-amine); carrying out ring-opening reaction on the intermediate 2 and ethylene oxide according to different proportions to obtain the fluorine-containing non-ionic surface active agent. The preparation method disclosed by the invention has the advantages that the production cost of the surface active agent is low, the preparation method is simple, the requirement on production equipment is low, and the production process is simple; the yield is high, the fluorine-containing monomer conversion rate reaches 93%; the surface performance is excellent, the lowest surface tension of certain compound to water is below 20mN/m and the HLB (Hydrophile Lipophile Balance) value of the surface active agent is easily changed.