27 results about "Triflic acid" patented technology

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 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 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 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 application discloses a preparation method of diphenyl 2,4,6-trimethylphenyl sulfonium trifluoromethanesulfonate. Diphenyl sulfoxide, trifluoromethanesulfonic acid and mesitylene are used as starting materials, and diphenyl 2,4,6-trimethylphenyl sulfonium trifluoromethanesulfonate is generated through reaction under the catalysis of trifluoroacetic anhydride and solid acid, and then the crude product is obtained through liquid separation and concentration, and then the product is obtained through washing and second concentration. The mass ratio of the diphenyl sulfoxide, trifluoromethanesulfonic acid, mesitylene, trifluoroacetic anhydride and solid acid is 1:0.8-1.0:0.7-0.9:2.0-3.0:0.3-0.5. The reaction needs to be carried out in an organic solvent system. The product has high purity, the content of metal impurities can be controlled below 60 ppb, there is only one impurity under liquid phase condition, and the product can fully meet the use requirements as an electronic chemical raw material.

Fezolinetant preparation procedure. The present invention relates to a process for obtaining fezolinetant that allows for the production of said product with high purity and enantiomeric excess through the use of trifluoromethanesulfonic acid. The present invention also relates to the trifluoromethanesulfonic acid salt of fezolinetant and to the use of said salt in the production of fezolinetant.

The present invention provides: a novel additive containing an ionic liquid that can be used for a composition for forming a cathode catalyst layer of a polymer electrolyte fuel cell; a novel composition for forming a cathode catalyst; and a novel cathode catalyst layer formed using the same.　The present invention relates to a composition for forming a cathode catalyst layer of a polymer electrolyte fuel cell, the composition containing an ionic liquid represented by formula (1). In the formula, X represents an atomic group containing a nitrogen atom or a phosphorus atom; Y represents a hydrogen atom, a carboxy group, or a sulfonic acid group; Z-represents a hydrogen sulfate anion, a trifluoromethanesulfonate anion, a bis(trifluoromethylsulfonyl)imide anion, a halogen anion, a tetrafluoroborate anion, a hexafluorophosphate anion, a bis(fluorosulfonyl)imide anion, or a nonafluorobutanesulfonate anion; and n represents an integer of 2-4.

This invention patent provides a polyetheretherketone (PEEK) membrane with imidazole-grafted side chains and its applications. The membrane is composed of a PEEK backbone and side chains grafted with imidazole groups, wherein the imidazole side chain grafting rate is 55-65%, and it can further coordinate with zinc ions to form an imidazole zincized structure. The membrane is prepared through a process including dissolution, grafting, coordination, and casting. The mass-to-volume ratio of PEEK to trifluoromethanesulfonic acid is 1 g:(9-11) ml, the molar fraction of zinc acetate is 5-20%, and the polymer mass fraction in the casting solution is 15-25%. This membrane possesses a rigid-flexible microphase separation structure. The rigid PEEK backbone provides excellent mechanical strength and dimensional stability, while the flexible imidazole zinc phase region is responsible for efficient CO2 transport. This maintains high CO2 permeability under low humidity, improves CO2 separation performance and inhibits swelling under high humidity, and maintains structural stability, making it suitable for gas separation processes over a wide humidity range.

This application belongs to the field of membrane material technology, and more specifically, relates to a polyether-based random copolymer, its preparation method, and its carbon capture application. This application uses two or three of the monomers selected from trioxymethylene, 1,3-dioxolane, and 4-methyl-1,3-dioxolane, and trifluoromethanesulfonic acid as a catalyst, to undergo cationic ring-opening polymerization for random copolymerization in an anhydrous and oxygen-free environment, generating a polyether-based random copolymer. In gas separation membrane applications, this random copolymer breaks the current trade-off between permeability and selectivity in polymer membrane materials, exceeding the generally accepted Robeson upper limit for gas separation. Using the polyether-based random copolymer of this invention as a selective layer, the resulting thin-layer composite membrane exhibits significant advantages such as high gas flux, excellent mixed gas separation performance, and industrial scale-up capability, achieving the performance of current mainstream international CO2 separation membranes.

This disclosure provides a method for preparing a compound represented by formula (I). The method comprises reacting a first starting material represented by formula (II) and a second starting material represented by formula (III) in a reaction mixture under Negishi conditions to form a compound of formula (I). R is an amine protecting group; Y is Cl, Br, or I; and Z is a trifluoromethanesulfonate, Cl, Br, or I.

This application provides an electrolyte, a sodium metal battery cell, a battery device, and an electrical device. The sodium metal battery cell includes an electrolyte comprising an electrolyte salt, a non-fluorinated chain ether solvent, and a metal ion additive. The concentration of the electrolyte salt is 0.5 mol / L to 1.5 mol / L, and the concentration of the metal ion additive is greater than 0.0005 mol / L and less than 1.0 mol / L. The cations of the metal ion additive include alkali metal ions other than sodium or alkaline earth metal ions. The anions of the metal ion additive include one or more of sulfate, acetate, formate, phosphate, oxalate, borate, citrate, niobate, tetrafluoroborate, difluorooxaloborate, perchlorate, hexafluorophosphate, trifluoromethanesulfonate, iodate, bis(fluorosulfonyl)imide, arsenate, carbonate, or tantalate, thereby providing improved high-temperature storage performance.

This invention relates to a method for preparing 2,5-furandicarboxylic acid compounds. The method includes: providing a hexose diacid compound, an acid catalyst, and an ionic liquid; and dehydrating the hexose diacid compound in the ionic liquid under the catalysis of the acid catalyst to form the 2,5-furandicarboxylic acid compound. The ionic liquid comprises a cationic moiety selected from pyridinium, pyridazinium, pyrimidinium, pyrazinium, oxazinium, thiazinium, imidazoline, pyrazolium, thiazoline, isothiazinium, oxazolium, isoxazolium, or triazolium, and an anionic moiety selected from halide anions. The acid catalyst comprises trifluoromethanesulfonic acid. The general structural formula of the hexose diacid compound is R1OOC(CHOH)4COOR2, and the structure of the 2,5-furandicarboxylic acid compound is shown in formula (I). This method offers mild reaction conditions; good FDCA selectivity and high yield; high product purity; simple operation; and low pollution.

This invention relates to the field of electrolyte technology, specifically to a non-aqueous electrolyte for dual-anionic magnesium salt fuel cells, comprising the following components: a composite salt, a mixed solvent, magnesium fluoride (MgF₂) nanoparticles, 1,3-dioxolane (DOL), diethylene glycol dimethyl ether (G2), and trimethyl phosphate (TMP). This invention utilizes a composite salt system composed of magnesium trifluoromethanesulfonate and magnesium bis(trifluoromethanesulfonyl)imide, which significantly enhances the ion transport capacity of the electrolyte through a dual-anionic synergistic effect.

This invention relates to the field of conjugated microporous polymer materials technology, and discloses a covalent triazine-based conjugated microporous polymer membrane with negative charge and its preparation method. The method first prepares a negatively charged cyanophenyl monomer through a nucleophilic substitution reaction of a cyanophenyl-containing compound with 1,4-butanesulfonate. Then, using this monomer as a comonomer with a biphenyl nitrile, the mixture undergoes stepwise polymerization under trifluoromethanesulfonic acid catalysis, followed by heating to form a film, rapid cooling for shaping, and a dual-solvent immersion post-treatment to finally obtain a covalent triazine-based conjugated microporous polymer membrane with negative charge. The preparation process of this invention offers strong controllability, and the resulting membrane possesses the high stability of the covalent triazine structure, the porous characteristics of the conjugated micropores, and the negative charge function, demonstrating broad application prospects in fields such as gas separation.

The present application relates to the technical field of organic synthesis, in particular to a synthesis method of 2,2,2-triphenylacetophenone, steps comprising: 1) preparing mesoporous SiO2 supported triflic anhydride catalyst, realizing solid-liquid separation and circulation of the catalyst; 2) adding pyridine in a segmented temperature control (0-5℃ initial drop, 15-20℃ subsequent drop) mode, reacting with the supported catalyst and benzopinacol in dichloromethane at 20℃ for 2h to avoid local overheating to generate byproducts; 3) after reaction, the catalyst is recovered by filtration, the mother liquor is washed with water, dried, concentrated to obtain a crude product, and then recrystallized with petroleum ether-ethyl acetate (volume ratio 8:1) double solvent to improve the purity to the pharmaceutical grade; 4) dichloromethane is recovered by a three-stage process of "calcium chloride water removal-normal pressure distillation-molecular sieve dehydration-precision filtration", and the recovery rate is ≥90%; 5) the byproduct pyridinium triflate is converted into pyridine and triflic acid by alkaline hydrolysis-acidification, and is reused in the catalytic system.

A novel Au@OTf-P5 composite optoelectronic material, its preparation method, and its application are disclosed, belonging to the field of photoelectrochemical technology. This material uses gold nanoparticles as the core carrier, and an OTf-P5 layer is modified onto the Au surface using self-assembly technology. A highly sensitive PEC sensing system is constructed using Au@OTf-P5 as the photoactive recognition unit for the specific detection of superoxide anions. The excellent conductivity and LSPR effect of Au nanoparticles serve as signal transduction. The unique electron-rich structure of the OTf-P5 cavity and the inductive effect of the trifluoromethanesulfonate groups achieve specific host-guest complexation and capture of superoxide anions. This complexation affects electron transport or alters the interface energy level, thereby enabling quantitative analysis of the target analyte through a signal-on-off or on-off mode of the photocurrent signal. This composite electrode exhibits a wide linear range, low detection limit, and excellent anti-interference capability when detecting superoxide anions.

This invention discloses an organofluorosilicone emulsion deepening agent, which is made from the following raw materials in parts by weight: 3-9 parts of hexamethylcyclotrisiloxane, 2-4 parts of trifluoropropylmethylcyclotrisiloxane, 1-3 parts of hexamethyldisiloxane, 3-9 parts of vinyldisiloxane, 1-3 parts of emulsifier, 0.1-0.6 parts of catalyst, and 2-6 parts of acrylate monomer. The organofluorosilicone monomer is prepared by ring-opening reaction of hexamethylcyclotrisiloxane, trifluoropropylmethylcyclotrisiloxane, and hexamethyldisiloxane under the action of trifluoromethanesulfonic acid catalyst. Then, the emulsifier is used to emulsify the monomer to obtain organofluorosilicone emulsion I. This invention has a simple preparation method, can reduce dye affinity, and inhibit dye migration. Furthermore, by changing the amount of emulsifier, the particle size of the emulsion can be adjusted, and emulsions of different particle sizes can be mixed together to form a film with different roughness, thus achieving a deepening effect.

This invention belongs to the field of electrochemical energy storage materials technology, specifically relating to poly(N-phenylaniline)trifluoromethanesulfonate and its preparation, electrode sheets, and batteries. Using an electrode containing N-phenylaniline as the positive electrode and an aqueous solution of zinc trifluoromethanesulfonate as the electrolyte, constant current charging is performed, and poly(N-phenylaniline) is formed through in-situ electro-oxidative polymerization. Under the action of an electric field, poly(N-phenylaniline)trifluoromethanesulfonate is obtained. This invention utilizes the in-situ electro-oxidation reaction of N-phenylaniline on the electrode surface, simultaneously combining with trifluoromethanesulfonate ions in the electrolyte, to generate the active material of poly(N-phenylaniline)trifluoromethanesulfonate in one step, thus completing the initial activation of the battery and exhibiting excellent electrochemical performance. This preparation method and electrode material provide a new high-performance option for the positive electrode of aqueous zinc-ion batteries, solving the problems of low specific capacity, poor cycle stability, and slow redox kinetics existing in aqueous zinc-ion battery positive electrodes.

The application discloses a trifluoromethanesulfonic acid rare earth solid carrier catalyst and a preparation method and application thereof, and belongs to the technical field of hydrofining catalyst preparation. The technical problems to be solved are that the reaction rate of a hydrofining catalyst system in a refining process is easily affected, PAHs are competitively adsorbed, and the catalyst is deactivated by initial carbon deposition. The technical solution is that a trifluoromethanesulfonic acid type rare earth complex is introduced into a Ni-Mo / Al2O3 metal system, so that the rare earth element and the metal precursor form a stable and highly dispersed composite system in a solution, and cooperatively participate in the structural evolution of a NiMoS active phase in a continuous process of impregnation, calcination and sulfidation, a solid carrier catalyst is prepared, and a rare earth reinforced NiMoS composite system with high metal dispersion, strong electronic regulation capacity and low deactivation kinetic constant is constructed, so that the deep hydrofining effect, the aromatic hydrocarbon saturation degree, the HDS efficiency and the operation stability are improved, and the application value is important.

This invention relates to the preparation of a thiophene-based covalent triazine framework material with a cascade effect and its application in the green photocatalytic conversion of benzimidazole derivatives. Specifically, this invention belongs to the field of organic porous materials and photocatalysis technology, and relates to the design and synthesis method of a novel covalent triazine framework material, as well as its application as a highly efficient and recyclable photocatalyst driving organic conversion reactions under mild conditions. This invention employs an acid-catalyzed trimerization reaction to successfully construct a covalent triazine framework material based on thiophene units (named PhTh-CTF). Using benzo[b]thiophene-2,5-dicyano as a single precursor and trifluoromethanesulfonic acid as a catalyst and reaction medium, a covalent organic framework with triazine ring connecting units is constructed through the trimerization cyclization reaction of the cyano group. This material exhibits a significant cascade effect.

The application discloses a preparation method of dimethylphenylsulfonium triflate, and the preparation method is that benzyl sulfide and methyl triflate are used to synthesize dimethylphenylsulfonium triflate, and then dimethylphenylsulfonium triflate products are obtained through crystallization, filtration, washing and drying, the molar ratio of benzyl sulfide and methyl triflate is 1:1.3-1.5; the prepared product sample has a purity of 99.89%, the content of metal impurities is controlled to be within 60 ppb, and only two kinds of impurities are detected, in addition, the prepared sample is more conducive to obtaining ultrahigh-purity products, and further recrystallization can obtain ultrahigh-purity products with a purity of more than 99.96% and metal impurities within 40 ppb.

The application discloses a thiophene, triazine functionalized covalent organic semiconductor and a preparation method and application thereof, and belongs to the technical field of organic semiconductor materials; the preparation method comprises the following steps: mixing a thiophene halogen precursor, a palladium catalyst, an alkali, 5-bromothiophene-2-carbonitrile and a polar aprotic solvent, and performing a coupling reaction to obtain a thiophene precursor containing double cyano groups; the thiophene precursor containing double cyano groups is subjected to a cyclization reaction in an organic hot solvent containing a Lewis acid, or a cyclization reaction is performed by using trifluoromethanesulfonic acid to obtain the thiophene, triazine functionalized covalent organic semiconductor. The thiophene, triazine functionalized covalent organic semiconductor prepared by the application has good absorption in a visible light range, and a band structure thereof meets the requirement of catalyzing the full decomposition of water to generate oxygen and hydrogen under visible light irradiation, and has the ability of photocatalytic water decomposition for hydrogen and oxygen evolution.

A conductor includes a conductive structure including a conductive carbon material (11) and having a predetermined shape, and a dopant (30) that generates electric charges in the carbon material. The dopant includes a triflate salt composed of a trivalent ion of a lanthanoid element and a triflate anion.

The application discloses a synthesis method of a chalcogen hetero-bowl-shaped molecule graphene, which comprises the following steps: taking cheap and easily obtained 2-bromo-5-chloroacetophenone as raw material, obtaining a trimer product thereof under the catalysis of trifluoromethanesulfonic acid, then introducing sulfur or selenium atoms through Suzuki coupling, Friedel-Crafts acylation and Scholl reaction, and finally obtaining the chalcogen hetero-bowl-shaped molecule graphene. The method has the advantages of short synthesis steps, mild reaction conditions, simple operation and the like, and most importantly, the sulfur or selenium atoms are introduced without the previous palladium catalysis, but in the case of metal-free catalysis, and the yield is high. The compound shows excellent electrical properties and has great application value in organic light-emitting diodes and semiconductor materials.

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.