26 results about "Fluoroform" patented technology

The invention provides a reflective integrated electrochromic device. The reflective integrated electrochromic device sequentially comprises a first substrate layer, a working electrode layer, an integrated electrochromic layer, a counter electrode layer and a second substrate layer, the integrated electrochromic layer comprises a metal source compound; the metal source compound is selected from silver chloride, silver acetate, silver nitrate, silver perchlorate, silver sulfate, silver cyanide, silver sulfide, silver hexafluorophosphate, silver tetrafluoroborate, silver tetrachloroaluminate, silver trifluoromethanesulfonate, silver bis (trifluoromethane sulfonimide), copper fluoride, copper chloride, copper cyanide, copper sulfate, copper acetate, copper aluminate, cuprous fluoride, cuprous chloride, cuprous cyanide, gold chloride and gold cyanide; the catalyst is one or more of gold sulfide, gold chloride, gold (II) sulfide, nickel chloride, nickel sulfate, cobalt chloride and platinum chloride. The device has a relatively large transmittance / reflectivity dynamic change range, can perform light and heat management at the same time, and can keep a stable coloring or fading state for one month or even several months under a no-load condition.

This application provides an electrolyte, an electrochemical apparatus, and an electronic apparatus. The electrolyte includes at least two of an additive I, an additive II, or an additive III. The additive I is at least one additive selected from a group consisting of a compound represented by the following formula 1a, a compound represented by the following formula 1b, and lithium difluorophosphate; and The additive II is at least one additive selected from a group consisting of lithium fluorosulfonate, difluorosulfonimide, and bistrifluoromethane sulfonimide. The additive III is at least one additive selected from a group consisting of lithium difluorooxalate borate, lithium bisoxalate borate, and lithium tetrafluoroborate. The electrolyte provided in this application can improve the low-temperature performance and reduce the resistance and thickness swelling rate of electrochemical apparatuses.

According to the method for recycling the rare earth elements from the neodymium iron boron waste materials, efficient phase separation of the rare earth and iron is achieved in the pretreatment stage through segmented roasting, and impurity interference in the follow-up acid leaching process is remarkably reduced; the acid consumption and the waste liquid discharge are greatly reduced while the mixed acid is selectively leached; in the extraction stage, an ionic liquid composite system of alkyl amido betaine bis (trifluoromethane sulfonimide) salt is adopted, and deep enrichment of rare earth elements is achieved in a high-selectivity and low-energy-consumption mode; a high-purity rare earth product is finally obtained; the method is complete in process, has the comprehensive advantages of short process, low pollution and high recovery rate, and provides technical support for green recycling of the neodymium iron boron waste.

To provide a method for producing hexafluoropropene in which the formation of octafluorocyclobutane, a by-product, is suppressed, and a composition obtained by the said production method. [Solution] A method for producing hexafluoropropene, comprising preheating trifluoromethane at a first preheating temperature of 350 to 700°C, then contacting it with tetrafluoroethylene to obtain a product containing hexafluoropropene.

A method of separating vinylidene fluoride and trifluoromethane, and the like are provided. The method includes: a step of mixing a mixture including vinylidene fluoride and trifluoromethane with a compound having a boiling point of from -60 to 0°C, to obtain a mixture for extraction; and a step of distilling the mixture for extraction, to independently obtain a distillate including vinylidene fluoride as a main component, and a bottom including a compound having a boiling point of from -60 to 0°C as a main component and further including trifluoromethane.

This invention discloses a sulfide-based fluorine-free high-entropy electrolyte in the field of battery technology, comprising a composite lithium salt system, a sulfide solvent, and a fluorine-free inert diluent. The composite lithium salt system consists of at least two lithium salts selected from lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium difluorooxalate borate, lithium nitrate, lithium perchlorate, lithium trifluoromethanesulfonate, lithium trifluoroacetate, and lithium dioxalate borate. The sulfide solvent is selected from one or more of dimethyl sulfide, diethyl sulfide, methyl ethyl sulfide, methyl propyl sulfide, methyl butyl sulfide, dimethyl disulfide, cyclohexane sulfide, phenyl sulfide, and diphenyl disulfide. The fluorine-free inert diluent is at least one of cyclopentane, cyclohexane, n-hexane, benzene, n-butane, isobutane, and n-pentane. This invention solves the problems of existing electrolytes, such as difficulty in balancing conductivity and interfacial stability, poor high and low temperature performance, and narrow electrochemical window; and achieves a comprehensive improvement in the overall performance of the electrolyte.

The invention provides a synthesis method of a benzo [a] fluorene compound. According to the method, o-aryl vinyl substituted cinnamyl aldehyde or o-aryl vinyl substituted chalcone derivatives are used as raw materials, protonic acids or lewis acids such as trifluoromethanesulfonic acid and iron trifluoromethanesulfonate are used as catalysts, reaction is performed for 2-12 hours at the temperature of 50-100 DEG C, reaction liquid is separated and purified, and the benzo [a] fluorene compound shown in the formula (I) is obtained. The synthesis method disclosed by the invention has the characteristics of simplicity and convenience in operation, high atom economy, simplicity in substrate preparation, wide application range and the like, and is suitable for actual organic synthesis.

A method of separating vinylidene fluoride and trifluoromethane, and the like are provided. The method includes: a step of mixing a mixture including vinylidene fluoride and trifluoromethane with a compound having a boiling point of from −60 to 0° C., to obtain a mixture for extraction; and a step of distilling the mixture for extraction, to independently obtain a distillate including vinylidene fluoride as a main component, and a bottom including a compound having a boiling point of from −60 to 0° C. as a main component and further including trifluoromethane.

A method of purifying vinylidene fluoride is provided. The method comprising: contacting a first fluid including vinylidene fluoride as a main component and further including trifluoromethane with a synthetic zeolite 4A, obtaining a second fluid in which the mass ratio of the content of vinylidene fluoride to the total content of the vinylidene fluoride and trifluoromethane is higher than the mass ratio of the content of the vinylidene fluoride to the total content of the vinylidene fluoride and the trifluoromethane in the first fluid.

A method of purifying vinylidene fluoride is provided. The method comprising: contacting a first fluid including vinylidene fluoride as a main component and further including trifluoromethane with a synthetic zeolite 4A, obtaining a second fluid in which the mass ratio of the content of vinylidene fluoride to the total content of the vinylidene fluoride and trifluoromethane is higher than the mass ratio of the content of the vinylidene fluoride to the total content of the vinylidene fluoride and the trifluoromethane in the first fluid.

This invention provides a method for producing carbon tetrafluoride using fluoroform as a raw material, and a pyrolysis and purification apparatus, which relate to the technical field of fluoroform resource utilization. Fluoroform is injected into a thermal plasma reactor and subjected to a pyrolysis reaction at 1500-5000 K to obtain carbon tetrafluoride. Compared to conventional tubular furnace pyrolysis or high-temperature muffle furnace pyrolysis, the thermal plasma reactor used in this invention relies on the synergistic effect of highly active electrons and heavy particles at high temperatures, resulting in significant electron excitation. This allows for efficient cleavage and directional reorganization of chemical bonds in fluoroform molecules without the use of catalysts or fluorine gas, resulting in high fluoroform conversion, high carbon tetrafluoride selectivity, and low energy consumption. Furthermore, the method provided by this invention has a short reaction time, large throughput, is safe and controllable, and the pyrolysis reaction products have a simple composition and are easy to separate and purify. It also consumes low cost and energy, making it suitable for industrial continuous scale-up production.

To reduce a load on a distillation process by bringing trifluoroiodomethane into contact with an alkaline medium as a pretreatment when distilling the trifluoroiodomethane to remove hydrogen fluoride gas, carbon dioxide gas and the like contained in the trifluoroiodomethane.SOLUTION: In the method for producing high-purity trifluoroiodomethane, trifluoromethane is reacted with iodine to produce trifluoroiodomethane, and the obtained trifluoroiodomethane is brought into contact with an alkaline solvent so that the content ratios of (a) carbon dioxide (CO2) and (b) hydrogen fluoride (HF) on the basis of peak areas determined by gas chromatography and / or ion chromatography are (a) ≤ 0.0010% and (b) ≤ 0.0010%, respectively, and the content of trifluoroiodomethane is 99.7% or more.SELECTED DRAWING: None

The application relates to a preparation method of an automobile sunroof light-adjusting film, which comprises the following steps: S1: fluorine-containing terephthalic acid, a dihydric alcohol, a catalyst and a stabilizer are configured into a slurry, esterification is carried out under certain pressure and temperature conditions, and an esterification product is obtained; the dihydric alcohol is composed of ethylene glycol and an ethylene glycol derivative monomer containing a bipyridine salt; S2: the esterification product is subjected to a polycondensation reaction under certain pressure and temperature conditions, and after the reaction, the modified PET resin chip is obtained by extruding and slicing; S3: the modified PET resin chip is compounded with hollow microsphere particles, zinc trifluoromethane sulfonate, a leveling agent and a wetting agent, is uniformly mixed, is coated between two layers of PET conductive film layers, and after heating and curing, the automobile sunroof light-adjusting film is obtained. The automobile sunroof light-adjusting film prepared by the application solves the problems that the existing automobile sunroof film cannot realize light adjustment, the heat insulation effect is not ideal, the service life is short and the like, and can meet the long-term use requirements in severe climate environments.

The invention discloses an N-trifluoromethyl diarylamine compound as well as a synthesis method and application thereof. The synthesis method provided by the invention comprises the following steps: step 1, preparation of an N-thio-fluoroformyl diarylamine compound: under the protection of inert gas, dissolving a diarylamine compound, organic phosphine, silane and trifluoromethanesulfonyl chloride in a solvent I, carrying out a heating reaction, and carrying out post-treatment to obtain the N-thio-fluoroformyl diarylamine compound; and 2, preparing the N-trifluoromethyl diarylamine compound: under the protection of inert gas, carrying out heating reaction on the N-thiofluoroformyl diarylamine compound and silver fluoride in a solvent 2, and carrying out post-treatment to obtain the N-trifluoromethyl diarylamine compound. According to the invention, a continuous reaction system of organic phosphine-silane catalysis and silver fluoride desulfurization fluorination is established for the first time, and efficient utilization of trifluoromethanesulfonyl chloride is realized. The method has the advantages of simplicity and convenience in operation, mild reaction conditions, high yield and the like, and shows good compatibility to sensitive functional groups and complex molecular structures.

The invention belongs to the technical field of organic fluorine chemical industry, and particularly relates to lithium trifluoromethanesulfinate as well as a preparation method and application thereof. The preparation method of the lithium trifluoromethanesulfinate is characterized by comprising the following steps: firstly, mixing and dissolving sodium sulfite, lithium carbonate, tetrabutylammonium decatungstate and sodium ascorbate in a solvent, deoxidizing the obtained system, then introducing trifluoromethane gas, controlling the reaction pressure to be 0.4-1.0 MPa, turning on a visible light source, and after the reaction is finished, cooling to room temperature to obtain the lithium trifluoromethanesulfinate. Controlling the wavelength of a light source to be 400-430nm, carrying out illumination reaction to obtain a reaction solution, and finally, carrying out post-treatment on the reaction solution to obtain lithium trifluoromethanesulfinate. The preparation method provided by the invention is efficient, low in cost and environment-friendly, and the prepared lithium trifluoromethanesulfinate is high in purity and high in yield and can be applied to the fields of lithium supplement of lithium ion batteries, energy storage equipment or pharmaceutical chemical industry.

The application discloses a fast-charging electrolyte and application thereof. The fast-charging electrolyte is composed of an electrolyte, an organic solvent and an additive; the electrolyte is selected from at least one of lithium hexafluorophosphate, lithium bis(oxalato)borate, lithium tetrafluoroborate, lithium bis(fluorosulfonyl)imide and lithium bis(trifluoromethanesulfonyl)imide; the organic solvent is selected from at least one of a linear organic solvent and a cyclic organic solvent; and the additive is selected from at least one of a phosphate compound, a sulfonate compound and a borate compound; the concentration of the electrolyte in the fast-charging electrolyte is 0.8-1.5 mol / L; and the mass content of the additive is 0.5-10 wt%. The fast-charging electrolyte can stabilize active oxygen on the surface of a lithium-rich positive electrode, form a uniform, dense and fast lithium-ion transmission electrode / electrolyte interface on the surface of the electrode, effectively enhance the anion redox reversibility of the lithium-rich positive electrode, and reduce the interface impedance, improve the reversible specific capacity of a high-voltage lithium-rich manganese-based material and fast-charging capacity.

A composition comprising: (i) 1,1-difluoroethene (vinylidene fluoride, R-1132a); (ii) carbon dioxide (CO2, R-744); (iii) pentafluoroethane (R-125); and (iv) one or more of trifluoromethane (R-23) and hexafluoroethane (R-116).

The application belongs to the technical field of organic fluorine chemical industry, and particularly relates to lithium trifluoromethylsulfinate and a preparation method and application thereof. The preparation method of the lithium trifluoromethylsulfinate is characterized by comprising the following steps: firstly, sodium sulfite, lithium carbonate, tetrabutylammonium decatungstate and sodium ascorbate are mixed and dissolved in a solvent, the obtained system is deoxygenated, then trifluoromethane gas is introduced, the reaction pressure is controlled to be 0.4-1.0 MPa, a visible light source is turned on, the wavelength of the light source is controlled to be 400-430 nm, and the reaction is carried out under light irradiation to obtain a reaction liquid, and finally the reaction liquid is subjected to post-treatment to obtain the lithium trifluoromethylsulfinate. The preparation method provided by the application is efficient, low in cost and environmentally friendly, the prepared lithium trifluoromethylsulfinate is high in purity and high in yield, and can be applied to lithium ion battery lithium supplement, energy storage equipment or the field of medicine and chemical industry.

The application discloses a kind of preparation based on fluorine imitation containing trifluoromethyl pyridine derivatives and method, belong to the technical field of pharmaceutical intermediates preparation.The method disclosed in the application utilizes high-temperature greenhouse gas fluorine imitation and reacts with pyridine derivative containing boronic acid group to obtain target product, and these compounds have wide application in the field of medicine.The trifluoromethyl pyridine derivative synthesis method provided by the application has the advantages such as simple method, mild reaction condition, high-value utilization of high-temperature greenhouse gas fluorine imitation, and has wide application prospect.

The invention belongs to the field of chemical engineering, and particularly relates to a method for preparing trifluoromethane by refining chlorofluorinated methane. The method comprises the following steps: 1) carrying out contact catalytic dechlorination on crude product gas through an iron-copper catalytic system to obtain mixed gas; 2) drying the mixed gas, and performing contact catalytic reaction through a TO-MOH composite catalyst to obtain a trichloromethane product; wherein the crude product gas in the step 1) contains any one or more of CClF3, CCl2F2, CCl3F, CHClF2, CHCl2F and CH2ClF, and the crude product gas is preheated to 105 to 120 DEG C in a controlled manner. Through cooperation of two specific catalytic processes, dechlorination and fluorination can be sequentially and efficiently achieved, directional conversion from chlorofluorinated methane to trifluoromethane is effectively achieved, and by-products generated in preparation of tetrafluoromethane through chlorine catalysis are quite effectively converted and utilized.

The invention belongs to the field of organic light-emitting material synthesis and performance research, and particularly discloses a synthesis method and performance of ethylene glycol protected pyrene. A compound A is used as a raw material and reacts with trifluoromethanesulfonic acid under certain conditions to obtain a compound B; the synthesis method adopted by the invention is simple and easy to operate, mild in reaction condition and high in yield. A target compound B solid is light green under natural light and shows blue fluorescence under irradiation of an ultraviolet lamp with the wavelength of 365 nm in a solution, so that the compound has a potential application prospect in the field of organic light emitting.

The present disclosure provides a trifluoromethanesulfonylating agent composition containing a compound represented by Formula (1) or (11) described in the specification, and a method for producing a trifluoromethanesulfonyloxy compound or a method for producing a trifluoromethanesulfonyl compound, which includes reacting the trifluoromethanesulfonylating agent composition with a compound represented by Formula (2) described in the specification, or a specific substrate.

The invention relates to the technical field of preparation of fluorine-containing intermediates, and particularly discloses a preparation method of 4, 4 '-difluoro-4, 4' The invention relates to a synthesis method of 4, 4 '-difluorobenzophenone, which comprises the following steps of: reacting p-fluorobenzoic acid and fluorobenzene serving as raw materials and trifluoromethanesulfonic anhydride serving as a catalyst in the absence of a solvent, pouring a reaction system into a small amount of ice water after the reaction is finished, stirring for 30 minutes, performing suction filtration, and washing a filter cake with a small amount of weakly alkaline solvent, thereby obtaining the 4, 4'-difluorobenzophenone with the purity of 99.9% or above at the yield of 95% or above. The preparation method disclosed by the invention has the advantages of no solvent, easily available raw materials, simplicity in operation, high yield (greater than 95%), good reaction selectivity, capability of obtaining high-purity (greater than or equal to 99.9%) 4, 4 '-difluorobenzophenone without recrystallization, small post-treatment pollution and wide application prospect.

The invention discloses a synthesis method of nonafluoroisobutyl methyl ether, which comprises the following steps: by taking hexafluoropropylene oxide and fluoromethane as raw materials, enabling fluorine to be bionic into nucleophilic trifluoromethyl negative ions (CF3-) under an alkaline condition, and in the presence of an amide compound, enabling the CF3-to attack amide carbonyl carbon to form oxygen negative ions (CF3CR (H) NR1R2O-), then, the intermediate attacks carbon with high electrophilicity in hexafluoropropylene oxide, hexafluoropropylene oxide is subjected to a ring-opening reaction, perfluoroisobutyryl fluoride is generated, and a part of sub-amide is generated; then, acyl fluoride is subjected to nucleophilic addition and methylation through fluorine ions, and finally synthesis of the nonafluoroisobutyl methyl ether is completed. The method realizes resource utilization of the fluorine imitation waste, and has the advantages of high conversion efficiency, mild reaction conditions and simple operation flow.

The application discloses a method for synthesizing 1,4-di(4-fluorobenzoyl)benzene by using ultrasonic waves, and belongs to the technical field of Friedel-Craft reaction. In the method, trifluoromethanesulfonic acid compounds are used as catalysts, fluorobenzene and terephthaloyl chloride are catalyzed to synthesize 1,4-di(4-fluorobenzoyl)benzene under the action of ultrasonic waves; the trifluoromethanesulfonic acid compounds are selected from any one of Bi(OTf)3, La(OTf)3, Sn(OTf)2 and TfOH. In the method, trifluoromethanesulfonic acid compounds are used as catalysts, the catalysts are separated by filtering and rectifying, and a large amount of acidic waste liquid is avoided; meanwhile, the reaction time is shortened, the reaction yield is improved, and the production cost is reduced by combining with ultrasonic wave intensification.

The invention relates to the technical field of preparation of trifluoroethyl ether, in particular to a preparation method of 2, 2, 2-trifluoroethyl ether. The preparation method comprises the following steps: by taking fluoroform as a fluorine source and potassium tert-butoxide and paraformaldehyde as raw materials, dissolving the raw materials in a solvent, introducing fluoroform under the protection of inert gas, carrying out nucleophilic substitution reaction, and after the reaction is finished, removing a byproduct tert-butyl alcohol and excessive formaldehyde to obtain a potassium trifluoroethoxide intermediate; and in a water-free and oxygen-free environment, dropwise adding a sulfonyl chloride compound solution into the potassium trifluoroethoxide intermediate, carrying out etherification reaction, filtering, and distilling the filtrate to obtain the 2, 2, 2-trifluoroethyl ether. Compared with the prior art, the technical defects of high raw material cost, harsh reaction conditions, chlorine-containing pollution of by-products and poor safety in the traditional process are overcome through the mild two-step process design.