174 results about "Triflic acid" patented technology

The invention belongs to the technical field of lithium battery materials, and particularly relates to a lithium trifluoromethanesulfonate in-situ doped graphdiyne composite material and a preparation method and application thereof. The preparation method of the lithium trifluoromethanesulfonate in-situ doped graphdiyne composite material adopts a one-step in-situ synthesis method, and specifically comprises the following steps: adding hexaacetylene benzene and lithium trifluoromethanesulfonate into a solvent, mixing, adding a catalyst, carrying out a heating reaction, and carrying out post-treatment on the obtained reactant to obtain the lithium trifluoromethanesulfonate in-situ doped graphdiyne composite material. Finally, the lithium trifluoromethanesulfonate in-situ doped graphdiyne composite material is obtained. The preparation method of the lithium trifluoromethanesulfonate in-situ doped graphdiyne composite material provided by the invention is simple in process, the prepared composite material is good in interface stability, and when the composite material is applied to a negative electrode of a lithium ion battery, the electrochemical performance of the battery can be improved, and the service life of the battery can be prolonged.

The invention discloses a method for synthesizing a dichloroacetyl compound, which comprises the following steps: tetrachloroethylene and an acid are subjected to an addition reaction at 100-200 DEG C to obtain an adduct, then the adduct is subjected to an acidolysis, hydrolysis or alcoholysis reaction to obtain the dichloroacetyl compound, the acid for the addition reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid, and the acid for the alcoholysis reaction is at least one of sulfuric acid, trifluoromethanesulfonic acid, methanesulfonic acid and phosphoric acid. The molar ratio of the tetrachloroethylene to the acid is 1: (1-10). By controlling the types of acids and increasing the temperature of the addition reaction, the addition reaction of tetrachloroethylene and acids in the absence of a catalyst is realized. Double bonds of tetrachloroethylene and hydrogen protons are subjected to an addition reaction in a strong acid environment to form a cationic intermediate, then the cationic intermediate is combined with acid radical anions to form an adduct, and the adduct intermediate is high in activity, unstable and free of separation and can be directly subjected to a hydrolysis reaction, an acidolysis reaction or an alcoholysis reaction with another substrate (such as water, acid or alcohol) respectively. The synthesis of dichloroacetyl series compounds is realized, and the route has universality and diversity.

This invention belongs to the field of chemical synthesis and relates to a method for achieving deuterated methylation of a nucleophile. The invention provides a deuterated methylating reagent, which is obtained by reacting formic acid with deuterated methanol under acidic conditions, followed by a second reaction with thiaanthracite and trifluoromethanesulfonic acid. The nucleophile is then reacted with the deuterated methylating reagent described in claim 1, a base, and a solvent to obtain the deuterated methylated product. This invention also provides a method for achieving deuterated methylation of a nucleophile, which involves dissolving the nucleophile and 5-deuterated methyl-5H-thiophene-5-onium trifluoromethanesulfonate in a suitable solvent, adding a base, and then performing the deuterated methylation reaction at room temperature. In the method provided by this invention, the yield of the product after nucleophile methylation can reach 52% to 95%.

An electrolyte, a sodium secondary battery and an electric device. The electrolyte comprises a first sodium salt and a first solvent, wherein the first sodium salt comprises sodium trifluoromethanesulfonate, and the first solvent has a structure as shown in formula I, with the mass ratio of the first sodium salt to the first solvent being 0.01-0.4. The electrolyte has a good low-temperature ionic conductivity, which is beneficial for improving the low-temperature cycling performance and low-temperature coulombic efficiency of the battery.

The application belongs to the field of fine chemical industry and environmental protection, and particularly relates to a method for preparing metal triflate by using high gravity reaction. The method comprises the following steps: 1, using trifluoromethylsulfonyl chloride and anhydrous HF gas as raw materials to generate trifluoromethylsulfonyl fluoride gas; 2, performing gas-liquid contact reaction of the trifluoromethylsulfonyl fluoride gas with an alkali metal solution to obtain a mixed solution; 3, performing solid-liquid separation on the mixed solution by using a filter press, and the liquid phase is a triflate salt solution; 4, drying the triflate salt solution by using a spray dryer to obtain a solid-phase product triflate salt. The method uses trifluoromethylsulfonyl chloride and anhydrous HF as raw materials to replace triflic acid in the traditional method, and utilizes high gravity reaction, so that the production cost is greatly reduced. The process is simple, the obtained product triflate metal salt has low impurity content, is superior to the industry standard, the process is zero emission, and has good economic value and social value.

The invention belongs to the technical field of polymer materials, and particularly relates to a conductive polymer material as well as a preparation method and application thereof. The conductive polymer material is prepared from the following components in parts by weight: 0.1 to 5 parts of ionic liquid, 0.1 to 10 parts of filler and 1 to 100 parts of polymer, the ionic liquid comprises at least one of organic salt and metal salt; the organic salt comprises at least one of p-toluenesulfonic acid triethylamine salt, p-toluenesulfonic acid tripropylamine salt, trifluoromethanesulfonic acid triethylamine salt and trifluoromethanesulfonic acid tripropylamine salt; the metal salt comprises at least one of potassium trifluoromethanesulfonate and sodium trifluoromethanesulfonate. The conductive polymer material prepared by the invention has the advantages of excellent conductivity, high transparency, good water resistance, good mechanical properties, good environmental stability, strong thermal stability and strong self-repairing ability.

The application discloses a triazine ring synthesis method, and belongs to the technical field of medical intermediate synthesis. The method is characterized in that 2-methylaminothiourea and dimethyl oxalate are used as raw materials, a nanometer catalyst of scandium triflate (Sc(OTf)3) or ytterbium triflate (Yb(OTf)3) is loaded on magnetic Fe3O4@SiO2, a cyclization reaction is carried out in an organic solvent, the catalyst is separated and recovered through an external magnetic field after the reaction is completed, and high-purity triazine rings are obtained through acidification, crystallization and drying of the reaction liquid. The catalyst has the advantages of high specific surface area, high catalytic activity, easy magnetic separation and recovery, and can be reused more than 6 times. The product yield can reach 93% to 96%, and the purity is greater than or equal to 99.6%. The method realizes green, efficient and low-cost synthesis of triazine rings.

The application discloses a low-temperature-resistant electrolyte for alkaline batteries and a preparation method thereof, and relates to the technical field of electrolytes. The application comprises the following raw materials in mass fraction: glycerol triacetate 11-13 parts, potassium hydroxide aqueous solution 100-150 parts, fluorine-containing additive 1-5 parts, and organic dispersion 21.3-28 parts; the organic dispersion is prepared from ethylene glycol, tetrabutylammonium trifluoromethanesulfonate, hybrid nanosheet and glycerol triacetate. The hybrid nanosheet prepared from hexagonal boron nitride, cerium ammonium nitrate, urea and polyethylene glycol 400 effectively improves the ion conductivity and cycle stability maintenance rate of the electrolyte at low temperature. The introduction of the components such as glycerol triacetate and fluorine-containing additive in the application further improves the performance maintenance rate of the electrolyte at low temperature, and simultaneously reduces the viscosity of the electrolyte at low temperature. Therefore, the application has a more extensive application prospect.

This invention provides a method for preparing high-purity imidazole ionic liquids, comprising the following steps: S1: 1-Ethyl-3-methylimidazolium chloride, sodium trifluoromethanesulfonate or sodium bis(trifluoromethanesulfonyl)imide, and glycerol solvent are added sequentially to a reactor, followed by stirring and reaction; S2: After the reaction is completed, stirring is turned off, and the resulting crude 1-ethyl-3-methylimidazolium ionic liquid and glycerol mixture are filtered and collected in a separator, with sodium chloride retained in the reactor and subsequently discharged; S3: Pure water is added to the separator, and the separator is stirred for a certain period of time before settling and separation; S4: The two phases in the separator are separated by a separator and then enter their respective purification devices; S5: The crude 1-ethyl-3-methylimidazolium ionic liquid is dehydrated by vacuum distillation to obtain the product; S6: The water and glycerol mixture is distilled under reduced pressure to obtain a reusable aqueous phase and a glycerol phase. This invention yields a product with a purity of over 99.5%; the solvents glycerol and water are reused after distillation. This method is simple, has a yield of over 94%, and is easy to implement in large-scale production.

The invention provides a photocatalytic method for degrading polystyrene into benzoic acid, which comprises the following steps: dissolving polystyrene in a mixed solvent containing acetonitrile and chlorobenzene, adding a catalyst FPQL-OMe and iron trifluoromethanesulfonate, and reacting under the conditions of oxygen atmosphere and illumination to generate benzoic acid, wherein the FPQL-OMe and the iron trifluoromethanesulfonate are synergistically used as a photocatalyst. The invention provides a method for photocatalytic degradation of polystyrene, which is mild in condition, rapid, efficient and high in selectivity, and particularly provides a photocatalytic method for degrading and converting polystyrene into benzoic acid at a relatively high yield.

The application belongs to the technical field of salt solution drying, and particularly relates to a continuous evaporation and drying device for triflic acid salt solution. The device comprises a raw material tank, a feeding pump, a recovery cold trap, a vacuum pump, a cyclone separator, two-stage thin film evaporators, a screw conveyor, a material bin and a heat conducting oil furnace, and a continuous material flow path, a gas phase condensation recovery path and a circulating heating path are formed through pipelines. The scheme limits the operation parameters of the two-stage evaporators, such as the operating pressure, temperature and scraper rotating speed, and clearly defines the heat exchange feeding design of the recovery cold trap, the gas velocity of the cyclone separator and the powder backflow structure, is suitable for multiple solvent systems and various corrosion-resistant materials, and the material bin adopts a closed structure with nitrogen protection, and multiple bins can be connected in parallel to switch feeding. The application realizes continuous drying of triflic acid salt, improves production efficiency, product quality and yield, reduces energy consumption and improves solvent recovery rate through waste heat recovery.

The present invention relates to catalyst composition for cyclic carbonate production from CO2 and epoxides under mild conditions, which can effectively catalyze the cyclic carbonate synthesis and provides good selectivity to cyclic carbonate, wherein said catalyst composition comprising:a) the metal complex as shown in structure (I):wherein,M represents transition metal atom;R1, R2, and R3 represent independent group selected from hydrogen atom, halogen atom, alkyl group, alkenyl group, alkynyl group, alkoxy group, amine group, phenyl group, benzyl group, cyclic hydrocarbon group comprising hetero atom, perfluoroalkyl group, or nitro group;R4 represents group selected from alkylene group, cycloalkylene group, or phenylene group;X represents group selected from hydrogen atom, acetate group, or triflate group; andb) the organic compound as the co-catalyst selected from compound containing nitrogen, compound of quaternary ammonium salts, or compound of iminium salts.

The invention belongs to the field of preparation of conjugated microporous polymers, and particularly discloses a method for synthesizing a conjugated microporous polymer through metal-free catalysis and application of the conjugated microporous polymer. According to the method, triphenylamine (TPA) is taken as a monomer, N-iodosuccinimide (NIS) is introduced to serve as an iodination reagent, the synergistic catalysis of trifluoromethanesulfonic acid (TfOH) is combined, and the synthesis of the conjugated microporous polymer (TPA-CMPs) is successfully realized under the condition that a metal catalyst is not needed. The obtained CMPs material has ultrahigh specific surface area and excellent iodine adsorption capacity, no metal participates in the whole process, the problems of high pollution, high cost and the like in the traditional metal catalytic synthesis process of CMPs are effectively solved, a new thought is provided for green chemical synthesis and functional material development, and the CMPs material has good application prospects in iodine vapor adsorption and iodine adsorption. The catalyst can also be applied to the fields of catalytic carriers, gas separation, environment restoration and the like and has wide application prospects.

The invention discloses a battery monomer, an isolating membrane, a preparation method of the isolating membrane, a battery device and a power utilization device, the battery monomer comprises the isolating membrane and electrolyte, and the isolating membrane comprises a porous base membrane; the coating is arranged on at least one side of the porous base membrane and comprises a polymer additive, and the polymer additive comprises a first functional group and a second functional group; the first functional group comprises one or more of bis (fluorosulfonyl) imino group, bis (trifluoromethyl) sulfonyl imino group, trifluoroboric acid group, hexafluorophosphoric acid group, sulfonic acid group, hexafluoroarsenate group, trifluoromethanesulfonic acid group, difluorophosphoric acid group, bis (oxalato) boric acid group, difluoro (oxalato) boric acid group, difluoro (oxalato) phosphoric acid group, tetrafluoro (oxalato) phosphoric acid group and imidazolyl; the second functional group comprises one or more of quaternary ammonium ions, pyrrolidinyl, pyrrolyl, piperidinyl, pyridyl and imidazolyl. The battery monomer has good dynamic performance; the invention provides the isolating membrane for realizing the beneficial effects of the battery monomer, the preparation method of the isolating membrane, the battery device and the power utilization device.

The invention provides a preparation method of fluorodinitrile. The preparation method comprises the following steps: reacting trifluoromethanesulfonic anhydride with fluoroalkyl alcohol to obtain fluoroalkyl substituted trifluoromethanesulfonate; then, the fluoroalkyl substituted trifluoromethanesulfonate reacts with malononitrile, and fluorodinitrile is obtained; the reaction raw materials used in the method are easy to obtain and low in price, the target product conversion rate is high, byproducts are few, the purity of the prepared fluorodinitrile is as high as 99%, the yield is higher than 84%, the content of chloride and bromide ions is lower than 5 ppm, and the fluorodinitrile can meet the requirement of serving as an electrolyte additive.

The invention discloses a method for preparing 2, 2-bis (2-tetrahydrofuryl) propane, and belongs to the technical field of organic synthesis. The method comprises the following steps: with furan and acetone as starting raw materials, firstly carrying out condensation reaction under the action of an organic strong acid catalyst to generate 2, 2-bis (2-furyl) propane, and then carrying out catalytic hydrogenation reduction to obtain a target product. The organic strong acid is selected from one or more of p-toluenesulfonic acid, trifluoromethanesulfonic acid, methanesulfonic acid, ethanesulfonic acid and benzenesulfonic acid. The organic strong acid is adopted to replace a traditional inorganic strong acid catalyst, the problems of equipment corrosion, post-treatment difficulty, low yield and the like are solved, the reaction condition is mild, the condensation reaction yield can reach 90% or above, the overall yield is high, the technological operation is simple, and the method is suitable for industrial production.

The present invention provides a novel dibenzothiophenium salt compound and a method for producing the same. The present invention also provides a photoacid generator containing the dibenzothiophenium salt compound, a resist composition containing the photoacid generator, a method for forming a resist pattern using the resist composition, and the like. The present invention relates to a compound represented by chemical formula (I), a photoacid generator containing the compound, a resist composition containing the photoacid generator, and a method for forming a resist pattern using the resist composition. (In the formula, R1 and R2 are the same or different and each represent a hydrogen atom, a halogen atom, -CF3, -SO2R3, an alkyl group having 1-10 carbons, -OH, a polymerizable group selected from formula (S-1) to formula (S-4), or an acid-reactive group selected from formula (R-1) to formula (R-7). R3 represents -CF3, -CF2CF3, an alkyl group having 1-10 carbons, or a phenyl group. [A]- represents a trifluoromethanesulfonic acid anion (TfO-) or a halide ion.) (In the formulae, R1a represents a hydrogen atom or a methyl group, and Y represents a single bond or an alkylene group having 1-3 carbons.) (In the formulae, Y is as described above. R51 to R53 may be the same or different, and each represent a hydrogen atom, an alkyl group having 1-20 carbons, an alkenyl group having 2-8 carbons, or an aromatic group having 4-18 carbons, or R 51 and R52 may be linked to each other to form, together with the carbon atoms to which these are bonded, an aliphatic hydrocarbon ring having 3-20 carbons. R54 and R55 are the same or different, and each represent a hydrogen atom or an alkyl group having 1-6 carbons. R56 represents an alkyl group having 1-20 carbons or an alicyclic hydrocarbon group having 3-20 carbons. -CH2- contained in the alkyl group, the aliphatic hydrocarbon ring, and the alicyclic hydrocarbon group may be substituted with -O- or -S-, and d represents an integer from 0 to 4. A case in which R51 to R53 are all hydrogen atoms in formula (R-1), formula (R-3), and formulae (R-5) to (R-7) is excluded.)

The application discloses a synthesis process of (-)-alpha-lycorane alkaloid and belongs to the technical field of organic synthesis chemistry. (2Z,4E)-7,7-diethoxy-3-hydroxyhepta-2,4-dienoic acid methyl ester and 3,4-methylenedioxy-beta-nitrostyrene are used as starting materials, and (-)-alpha-lycorane is obtained through catalytic asymmetric tandem Michael addition reaction, nitro reduction amination reaction, Boc amidation reaction, Bischler-Napieralski cyclization reaction, ketone enolization tandem esterification reaction, enol triflate reductive hydrogenolysis reaction and amide reduction reaction in sequence. (-)-Alpha-lycorane has a four-membered ring core skeleton of pyrrole-phenanthridine ring, has good in-vitro tumor inhibition activity and cell proliferation growth inhibition activity. The synthesis process can realize efficient, simple and full synthesis of (-)-alpha-lycorane.

The invention discloses a linear ether and cyclic ether mixed electrolyte for a wide-temperature-range sodium-ion battery as well as a preparation method and application of the linear ether and cyclic ether mixed electrolyte, and relates to a wide-temperature-range electrolyte as well as a preparation method and application of the wide-temperature-range electrolyte. The invention discloses a linear ether and cyclic ether mixed electrolyte for a wide-temperature-range sodium-ion battery. The linear ether and cyclic ether mixed electrolyte comprises sodium salt and an ether-based solvent, the sodium salt is sodium trifluoromethanesulfonate; the ether-based solvent is a mixed solution of straight-chain ether and cyclic ether; the straight-chain ether is diethylene glycol dimethyl ether; the cyclic ether is tetrahydrofuran or dimethyl tetrahydrofuran. The straight-chain ether and cyclic ether mixed electrolyte of the wide-temperature-range sodium-ion battery provided by the invention has a low freezing point, low viscosity, high ionic conductivity and high sodium ion transference number in a wide temperature range, and low desolvation energy, and can reduce the interface charge transfer impedance of an electrode-electrolyte, so that the performance of the battery is improved. Sodium ions can be quickly embedded and separated when reaching the electrode, so that the wide-temperature-range performance of the sodium ion battery is improved, and the sodium ion battery has excellent wide-temperature-range charge-discharge specific capacity, cycling stability and high-rate performance.

The invention discloses a passivator for a solar cell, application of the passivator and the solar cell, and belongs to the technical field of solar cells. The passivator comprises one or more of compounds shown in the formula (I) and derivatives of the compounds, wherein R1-R10 are independently selected from hydrogen and fluorine; and Z is a monovalent anion of one of iodine, bromine, chlorine, fluorine, thiocyanate and trifluoromethanesulfonic acid ions. According to the passivator for the solar cell, the application of the passivator and the solar cell, the crystallization rate of a perovskite thin film can be effectively adjusted, the crystallization process is optimized, segregation of A-site cations in a perovskite layer is restrained, and the stability and performance of the cell are improved.

The invention discloses a wide-temperature-range electrolyte and application thereof, and belongs to the technical field of supercapacitors. The wide-temperature-range electrolyte comprises the following components in percentage by mass: 12.5%-15% of lithium salt, 0.3%-1% of [2, 2 '-dinaphthalene]-7-yl trifluoromethanesulfonate, 0.5%-1.5% of a sulfur additive, 0.5%-1% of a lithium salt additive and the balance of an organic solvent, by taking the total volume of the organic solvent as 100%, the volume ratio of the 2-bromo-5-fluoroisonicotinic acid methyl ester to the total volume of the ethylene carbonate and the propylene carbonate to the diethyl carbonate to the ethyl methyl carbonate is (5-10): (10-15): (10-20): (50-65). Experiments prove that by adding the methyl 2-bromo-5-fluoroisonicotinate and the functional [2, 2 '-dinaphthalene]-7-yl trifluoromethanesulfonate into the electrolyte, the high and low temperature discharge performance, especially the low temperature performance, of the supercapacitor can be remarkably improved, and the highest discharge capacity retention rate at-20 DEG C is 84.5%. Therefore, the wide-temperature-range electrolyte prepared by the method can solve the problem that a traditional supercapacitor electrolyte is difficult to consider high and low temperature performance at the same time.

The invention discloses a synthesis method of 9, 9-bis (trifluoromethyl)-2, 3, 6, 7-xanthene tetracarboxylic dianhydride, which comprises the following steps: (1) carrying out condensation reaction on N-methyl-4-nitrophthalimide and hexafluoroacetone trihydrate under the catalysis of trifluoromethanesulfonic acid to obtain a first intermediate; (2) performing catalytic etherification reaction on the first intermediate in the presence of sodium nitrite to obtain a second intermediate; (3) carrying out hydrolysis reaction on the second intermediate under an alkaline condition to obtain a third intermediate; and (4) dehydrating the third intermediate into anhydride to obtain 9, 9-bis (trifluoromethyl)-2, 3, 6, 7-xanthene tetracarboxylic dianhydride. According to the method, raw materials are low in price and easy to obtain, the reaction yield and the product purity are high, particularly, the situation that potassium permanganate oxidation or nitric acid oxidation is insufficient in the prior art is avoided, and the method is higher in safety, more environmentally friendly and suitable for large-scale industrial production.

The invention discloses a synthesis method of a trifluoromethanesulfonate radical promoted amidino nickel complex. The preparation method comprises the following steps: reacting N, N '-dialkyl substituted amidino alkali metal salt with a nickel precursor, adding trifluoromethanesulfonate as an accelerant, and regulating the reaction rate and selectivity by utilizing the coordination effect of trifluoromethanesulfonate so as to efficiently prepare the amidino nickel complex. In the process, an ether compound is used as a solvent, the reaction is carried out at 0-70 DEG C for 1-48 hours, the reaction yield can reach 90% at most, and the product purity is gt; and 98%. The method has the characteristics of easily available raw materials, simplicity and convenience in operation, mild reaction conditions, good target product selectivity, high synthesis efficiency, convenience in post-treatment and the like, and has industrial application prospects.

This invention provides a manufacturing method that can produce high-purity quaternary ammonium salts with high yield. [Solution] A reaction step to obtain an ammonium halide compound by reacting a tertiary amine with a (substituted) benzyl halide compound, and the halide ions contained in the ammonium halide compound obtained in the reaction step are (C6F5)4B - SbF6 - PF6 - (CF3CF2)3PF3 - (C6F5)4Ga - A method for producing quaternary ammonium salts is used, which includes a salt exchange step in which the salt is exchanged in a solvent with at least one ion selected from the group consisting of trifluoromethanesulfonate anion and p-toluenesulfonate anion, and the entire process from the reaction step to the salt exchange step is carried out using a continuous production facility.

The invention belongs to the technical field of medical materials, and particularly relates to an electric controlled drug release metal organic framework based composite patch as well as a preparation method and application thereof. The preparation method comprises the following steps: growing UiO-67 on SWCNT in situ to prepare UiO (at) SWCNT, then carrying out N-methylation on a bipyridine part by using methyl trifluoromethanesulfonate to prepare UiO-N + (at) SWCNT, loading a small molecule drug to obtain UiO-N + (at) SWCNT / Dug, forming the electric controlled drug release metal organic framework based composite patch with P (PLMA-AM-DAC) hydrogel and a flexible printed circuit board, and connecting with a mobile phone APP through a Bluetooth module to prepare the electric controlled drug release metal organic framework based composite patch. And constructing the integrated electrical stimulation transdermal drug delivery application. The flexible wearable characteristic of the system enables the system to be more comfortable and convenient, the treatment compliance and life quality of a patient can be improved, and an intelligent solution is provided for chronic skin disease treatment.

The invention belongs to the technical field of photocatalytic material preparation, and particularly relates to HM-UiO-66 (at) CTF / MFC aerogel and a preparation method and application thereof.The preparation method comprises the following steps that zirconium tetrachloride and 2-aminoterephthalic acid are added into an N, N-dimethylformamide solution of lauryl sodium sulfate, and stirring reaction is conducted; the preparation method comprises the following steps: dissolving sodium dodecyl sulfate in deionized water, then standing at 70-90 DEG C for 5-20 hours, then washing a solid product, removing the sodium dodecyl sulfate in the product, and drying to obtain HM-UiO-66-NH2; the preparation method comprises the following steps: placing HM-UiO-66-NH2 in an inert atmosphere, mixing the HM-UiO-66-NH2 with a chloroform solution of 4-cyanobenzoyl chloride, carrying out a stirring reaction, dropwise adding triethylamine into the mixture, and continuously carrying out a stirring reaction to obtain HM-UiO-66-CN; the preparation method comprises the following steps: mixing HM-UiO-66-CN with 4, 4 '-biphenyl formonitrile, and adding trifluoromethanesulfonic acid into the mixture to prepare HM-UiO-66 (at) CTF-2; and uniformly mixing the aqueous dispersion of the HM-UiO-66 (at) CTF-2 and the aqueous dispersion of the microfibrillated cellulose according to a ratio, and carrying out freeze-drying, so as to obtain the HM-UiO-66 (at) CTF / MFC aerogel. When the aerogel is used as a photocatalyst, the aerogel has good light absorption performance, good VOCs adsorption performance and good photocatalytic degradation efficiency.

The invention discloses a quasi-solid electrolyte of a sodium metal battery, a preparation method of the quasi-solid electrolyte and a quasi-solid sodium battery, and the preparation method comprises the following steps: mixing sodium bis (trifluoromethanesulfonyl) imide, sodium difluoro (oxalato) borate and dioxolane, and stirring until the mixture is completely dissolved to obtain a sodium salt solution; dissolving tin trifluoromethanesulfonate in the fluoroethylene carbonate solution to obtain an initiator solution; adding the initiator solution into the sodium salt solution, and uniformly stirring to obtain an electrolyte precursor solution; and injecting the electrolyte precursor solution into the battery, sealing, and standing at a constant temperature to obtain the quasi-solid electrolyte of the sodium metal battery. The quasi-solid sodium battery further comprises a positive electrode, a negative electrode and a diaphragm. Through the design of the internal interlocking redox regulation pair, synthesis of the quasi-solid electrolyte and in-situ construction of the stable interface layer are achieved in one step, the process is simple and efficient, and the problems that in a traditional method, interface modification steps are complex, and compatibility with body electrolyte is poor are solved.

The present application relates to the technical field of chemical synthesis, and particularly relates to a preparation method of 4,4'-difluorobenzophenone and a method for synthesizing polyether ether ketone by two steps of carbon tetrachloride. The preparation method of 4,4'-difluorobenzophenone comprises the following steps: under the condition that trifluoromethanesulfonic acid and N-methyl pyrrolidone exist, CCl4 and fluorobenzene are reacted, and the product is hydrolyzed to obtain 4,4'-difluorobenzophenone. The present application solves the problems of high cost, poor environmental protection and performance that cannot meet market requirements of PEEK by innovating raw material route, catalytic system and process parameters, realizes low-cost, green and high-performance synthesis of PEEK, the purity of the prepared DFBP monomer can reach >=99.99%, and the PEEK molecular weight distribution (PDI<=1.9) can be narrowed, and the method is suitable for industrialized production of PEEK materials used in high-end fields such as aerospace, medical devices and electronic and electrical appliances.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of tocopheryl glycoside. According to the method, tocopherol monomers and acetylated glycosyl donors are used as raw materials, and stereoselective glycosylation coupling is performed under the action of scandium trifluoromethanesulfonate and / or ytterbium trifluoromethanesulfonate, so that tocopherol glycoside can be obtained with high yield and high stereoselectivity. The method has the advantages of high utilization rate of tocopherol, mild reaction conditions, high product purity and safe reaction and post-treatment steps, and is suitable for large-scale production.

The present invention relates to a method for obtaining fezolinetant which allows said product to be obtained with a high purity and enantiomeric excess by means of using trifluoromethanesulfonic acid. The present invention also relates to the trifluoromethanesulfonic acid salt of fezolinetant and to the use of said salt in obtaining fezolinetant.