177 results about "Halohydrocarbon" patented technology

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

The invention provides a method for preparing polyarylester by interfacial polycondensation, which comprises the following steps: dissolving a diphenol monomer in an alkali solution to prepare a bisphenol salt solution, and dissolving an interfacial catalyst in a bisphenol salt water phase to obtain a water phase; dissolving aromatic dicarboxylic acid acyl chloride in a halogenated hydrocarbon solvent to obtain an organic phase; s2, slowly adding the organic phase obtained in the step S1 into the water phase in a stirring state within 10-60 minutes, and continuously reacting for 10-120 minutes in the stirring state; the product is separated out in the form of precipitate, the precipitated precipitate absorbs the halogenated hydrocarbon solvent, so that a liquid phase main body is water, a solid phase is a muddy product containing the halogenated hydrocarbon solvent, and the obtained muddy product is filtered, washed and dried to obtain a powdery product. According to the method disclosed by the invention, the polymer is directly precipitated by controlling the solute concentration and the mixing ratio, so that the efficient in-situ removal of the solvent is realized, the solvent is directly separated from water through simple filtration, and'zero separation, zero crushing and zero distillation 'is realized.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention relates to the technical field of waste gas treatment, and particularly discloses waste gas treatment liquid for treating large-air-volume low-concentration waste gas through a water-based method. The waste gas treatment liquid for treating the large-air-volume low-concentration waste gas through the water-based method comprises a surfactant, a defoaming agent, a dissolution accelerant and water. Wherein the surfactant can be selected from any one or more of polyoxyethylene alkyl ether, polyoxyethylene alkyl ether and polyoxyethylene fatty acid ester; the dissolution accelerant can be selected from any one or more of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and triethylene glycol monobutyl ether; the defoaming agent is any one or more of butanol, dimethyl silicone oil, silicone and polyether modified polysiloxane. When the waste gas absorption liquid obtained in the invention is used for treating waste gas, the absorption efficiency of methanol, butanol, benzene, toluene, xylene, ethyl acetate, dichloromethane and acetone is obviously improved, and the absorption efficiency of the waste gas absorption liquid on aromatic hydrocarbon, halogenated hydrocarbon, alcohol, ketone and ester pollutants is improved.

This invention discloses a method for synthesizing dialkylphosphinates, belonging to the field of organic synthesis technology. The method uses hypophosphite and haloalkanes as starting materials. First, a hypophosphite is generated through a heated and pressurized reaction under the action of a phase transfer catalyst. The obtained hypophosphite does not require complex purification; it is directly reacted with an olefin under heated and pressurized conditions in the presence of a free radical initiator to obtain the target product, dialkylphosphinate. The method of this invention uses inexpensive and readily available raw materials, has a simple process route, includes only two core reactions, operates under mild conditions, is safe and convenient, produces few and easily treatable byproducts, has a high product yield, and is simple to purify. It is very suitable for large-scale industrial production, providing an economical and efficient synthetic route for the preparation of high-performance halogen-free flame retardants.

The utility model discloses a pipette adapter and relates to the field of chemical analysis. The adapter is used for connecting a micropipettor at the upper end and a glass tube at the lower end. The adapter is mainly composed of a silica gel outer wall and a sand core filter arranged in the middle, and a cylindrical space with a certain diameter is reserved in the adapter. The adapter can be connected with glass tubes which are made of different materials and have various shapes, and halogenated hydrocarbon, ketone and aromatic hydrocarbon organic solvents can be accurately measured according to the characteristic.

This invention discloses a method for the simultaneous preparation of micronized and stabilized zero-valent iron (ZVFe) based on ball milling with terephthalic acid, belonging to the field of groundwater pollution remediation materials. The method includes the following steps: 1) incorporating terephthalic acid into micron-sized ZVFe powder and mechanically ball milling it; 2) cleaning the material with a solvent and drying it to obtain micronized and stabilized ZVFe reducing material. This invention simultaneously achieves the micronization and stabilization of ZVFe. This method enhances the reducing activity, internal surface hydrophobicity, and electron selectivity of ZVFe materials, improves their reducing performance and electron selectivity for pollutants such as halogenated hydrocarbons and heavy metals, effectively inhibits the oxidative deactivation of ZVFe materials in the aquatic environment and the hydrogen evolution side reaction with water, enabling ZVFe materials to maintain high reducing activity stably in water for a long period. This invention solves the technical problems of poor stability and difficult storage of micronized ZVFe materials in water, which is beneficial for reducing material replacement frequency and resource consumption.

The application discloses a cleaning method of a cauldron for preparing aluminum trihydride, which comprises the following steps: (1) under an inert gas atmosphere, adding a polyhalogenated hydrocarbon solvent and an inorganic salt abrasive into the cauldron, and stirring intensively to grind off the wall-bonding substances in the cauldron; (2) emptying the cauldron, and slowly feeding a buffer solution into the cauldron through a bottom pipe in a vacuum-extraction mode, so that the buffer solution is immersed into the cauldron from the bottom of the cauldron; and (3) sequentially using dilute alkali, dilute acid and water to completely immerse the wall-bonding layer, and then washing the cauldron with water. The method can safely and effectively remove the wall-bonding substances on the cauldron.

A method of preparing an ionic liquid includes the following steps. A halogen-containing compound is reacted with a first compound to form a second compound. The halogen-containing compound includes a halohydrocarbon, a sulfonyl halide, or a combination thereof. The first compound includes an amine compound having a tertiary amine group, a phosphine compound, or a combination thereof. The second compound includes a first quaternary ammonium salt, a first quaternary phosphonium salt, or a combination thereof. The second compound and a lithium salt are reacted in a microwave device to form a third compound. The third compound includes a second quaternary ammonium salt, a second quaternary phosphonium salt, or a combination thereof. Anions of the second compound and the third compound are different. A microwave power of the microwave device is 700 watts to 1400 watts.

The invention relates to a process for preparing a block copolymer, the process comprising: a) adding at least one ethylenically unsaturated hydrophilic monomer and a composition Y to a reactor for polymerization; b) adding at least one ethylenically unsaturated hydrophobic monomer to the reactor for polymerization after the polymerization of step a) to obtain an amphiphilic diblock copolymer; c) adding at least one ethylenically unsaturated hydrophobic monomer to the reactor for polymerization after the polymerization of step b); wherein the composition Y contains: A) at least one halogen molecule or halogenated hydrocarbon optionally substituted by cyano, B) at least one iodide salt, and C) at least one free radical polymerization initiator, wherein the equivalent ratio of the at least one ethylenically unsaturated hydrophobic monomer in step b) to the polymer formed from the at least one ethylenically unsaturated hydrophilic monomer in step a) is in the range of 5 to 60.

The invention belongs to the field of organic synthesis, and provides a synthesis method of a novel acrylate monomer with a bifunctional structure, which comprises the following steps: S1, reacting an ester group-containing alcohol compound with a carbonylation reagent to obtain an intermediate product A; s2, acidifying an alcohol amine compound, and reacting with an acryloyl reagent to obtain an intermediate product B; s3, reacting the intermediate product A with the intermediate product B to obtain a target product C, namely the novel acrylate monomer with the bifunctional structure; wherein R1 is hydrogen or alkyl, R2 is an organic group containing an ester group, m is an integer greater than or equal to 1, R3 and R4 are independently selected from at least one of arene oxyl, halogenated hydrocarbon oxyl or heterocyclic ring containing nitrogen atoms, R5 is alkylene, and L is selected from at least one of halogen atoms, hydroxyl or hydrocarbon oxyl. The method is simple to operate, the reaction process is easy to control and realize, and industrial production is easy.

The invention discloses a halogenated hydrocarbon and heavy metal combined pollution natural attenuation life cycle benefit evaluation method, and belongs to the technical field of environmental science and engineering. The method comprises the following steps: constructing an MNA full-life-cycle system boundary, and establishing a list database including monitoring well network full-life-cycle operation and maintenance, long-term sampling analysis and natural attenuation asset accounting; establishing a biogeochemical coupling evaluation model, and introducing a coupling factor to quantify the synergistic environmental benefit of halogenated hydrocarbon anaerobic degradation and heavy metal reduction fixation; selecting global warming potential, primary energy consumption and secondary environment risk indexes to carry out characterization evaluation; a net environmental benefit (NEB) is calculated based on a time discount principle. According to the method, the ecological and economic comprehensive advantages of the MNA technology in the specific combined pollution area can be scientifically and quantitatively revealed, and a decision basis is provided for green restoration technology screening and long-term monitoring scheme optimization.

This invention relates to the field of catalysts, specifically to a polyethylene catalyst and its preparation method, as well as ultra-high molecular weight polyethylene and its preparation method. The method includes the following steps: (1) under diluent conditions, a magnesium halide precursor, an alcohol compound, and a first internal electron donor undergo a first contact reaction to obtain a first reaction solution; (2) a second internal electron donor is added to the first reaction solution to undergo a second contact reaction to obtain a second reaction solution; (3) a titanium precursor is added to the second reaction solution to undergo a third contact reaction to obtain a third reaction solution; (4) a haloalkane is added to the third reaction solution, followed by a third internal electron donor to undergo a fourth contact reaction. The catalyst prepared by this invention exhibits good catalytic performance.

The application relates to the technical field of fine chemicals, in particular to a biomimetic amphoteric surfactant as well as a preparation method and application thereof; the preparation method of the biomimetic amphoteric surfactant comprises the following steps: reacting a fatty amine polyoxyethylene ether with a halogenated hydrocarbon to obtain a benzyl quaternary ammonium salt intermediate; cooling the benzyl quaternary ammonium salt intermediate, then adding phosphorus pentoxide to react; after the addition is completed, water is added, the reaction is continuously carried out, and the biomimetic amphoteric surfactant is obtained; the biomimetic amphoteric surfactant simultaneously integrates three characteristics of phosphate anion, polyether non-ion and benzyl quaternary ammonium salt cation, effectively solves the industry problem that traditional phosphates and cationic settling agents are incompatible, and is applied to metal processing fluid, can realize stable compounding with cationic settling agents while retaining excellent extreme pressure lubricity and hard water resistance, and can replace traditional extreme pressure agents such as environmentally-unfriendly chlorinated paraffin.

In order to solve the problem that the existing electrolyte is difficult to give consideration to the high-temperature storage life and the improvement of the battery performance, the invention provides a non-aqueous electrolyte, the non-aqueous electrolyte comprises a non-aqueous organic solvent, an electrolyte salt, an additive and a stabilizer, the stabilizer comprises a compound as shown in a structural formula 1, and the additive comprises a compound as shown in a structural formula 2; in the structural formula 1, R1 is selected from C1-C5 halogenated alkyl; in the structural formula 2, n is 0 or 1, and R2 is selected from H, halogen, C1-C3 alkyl or C1-C3 halogenated alkyl. The invention also provides a secondary battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte provided by the invention has a relatively long high-temperature storage life on the basis of improving the electrochemical performance of the secondary battery.

This invention relates to a simple method for modifying β-ketoimine ligand precursors, wherein L... Ph The reaction involves a lithium compound with H2 solution; then a haloalkane is added for C-C coupling; followed by the addition of an acid solution to complete the modification of the β-ketoimine ligand precursor, yielding a terminally alkylated ketoimine. This invention relates to a simple method for modifying β-ketoimine ligand precursors, specifically involving the removal of the proton at the α-position of the β-ketoimine ligand precursor from commercially available n-butyllithium to form a deprotonated β-ketoimine lithium compound, followed by C-C coupling to achieve alkylation at the α-position of the ketocarbonyl group, thus providing a convenient modification of the β-ketoimine ligand precursor.

This invention relates to the field of organic synthesis technology, specifically to a highly efficient and stable Grignard preparation and its green preparation method. By weight, it comprises 8-18 parts of a magnesium source, 40-92 parts of a halogenated hydrocarbon, 150-200 parts of a green solvent, 15-20 parts of ethylene glycol dimethyl ether, and 2.3-3.2 parts of a synergistic stabilizer. The green solvent is 2-methyltetrahydrofuran, or a composite solvent with a weight ratio of 2-methyltetrahydrofuran:methyl tert-butyl ether of 150-160:40-50. The synergistic stabilizer is composed of 1.5-2.0 parts of N,N,N',N'-tetramethylethylenediamine and 0.8-1.2 parts of butylated hydroxytoluene, or composed of 1.5-2.0 parts of N,N,N',N'-tetramethylethylenediamine and 1.0 part of phenothiazine. This invention uses a green solvent system to replace traditional toxic and harmful solvents, and combines it with a solvent recovery process to achieve solvent recycling, which greatly reduces waste emissions and makes the production process safer and more environmentally friendly, in line with the development direction of green chemical industry.

The application discloses a high-boiling halogenated hydrocarbon dechlorination device in the technical field of waste lubricating oil treatment, which comprises a reaction tank, an oil inlet pipe and a reaction agent feeding pipe are connected to the reaction tank, a water washing mechanism is connected to the discharge port of the reaction tank, and a flash tower is connected to the water washing mechanism; a heating plate is arranged in the reaction agent feeding pipe; a through hole is formed in the heating plate; a guide rod is slidably arranged on the reaction tank; a blocking plate is arranged on the inner side end of the guide rod; an installation box is arranged on the reaction tank; the outer side end of the guide rod extends into the installation box and is connected with a pressing piece; a touch switch is arranged in the installation box; and the controller is electrically connected with the heating plate. In the application, when the dechlorination agent solidifies, the speed of the dechlorination agent entering the reaction tank is reduced, the blocking plate moves with the pressing piece to press the touch switch, the controller is driven to control the heating plate to work in the power-on mode, the temperature of the dechlorination agent is increased, and the dechlorination agent can fully contact with the distillate oil.

A low-carbon and environment-friendly method for synthesizing a primary amine from a halogenated hydrocarbon in the technical field of organic synthesis is provided. The method includes adding formaldehyde and ammonia in an alcohol solution at a ratio of 8 mol:8 mol for a full reaction, then adding 3 mol of the halogenated hydrocarbon at a suitable temperature, followed by a full reaction, and performing a series of post-treatment steps to obtain a target primary amine product with relatively high purity.

The invention belongs to the field of chemical homogeneous catalysis technology and chemical process, and provides an imidazolyl basic ionic liquid catalyst, and a preparation method and application thereof. The catalyst provided by the invention is obtained by carrying out quaternization reaction on N-methylimidazole and halogenated hydrocarbon (such as methyl iodide, bromoethane and the like) in a solvent to generate an intermediate halogen quaternary ammonium salt, and then carrying out ion exchange reaction on the intermediate, sodium hydroxide and an imidazole derivative (such as imidazole or 2-methylimidazole) in the solvent. The catalyst can be applied to catalysis of transesterification of methanol and propylene carbonate to prepare dimethyl cyclic carbonate, and has the advantages of efficient preparation process, mild reaction conditions, no metal, no pollution and simple catalytic system, and the highest yield of dimethyl carbonate can reach 95%.

The invention discloses a synthesis method and application of urolithin A and urolithin B derivatives, and discloses several novel urolithin A and urolithin B derivatives and related activity information. A series of novel urolithin A and urolithin B derivatives are obtained by respectively taking urolithin A and urolithin B as parent bodies and carrying out alkylation reaction on the parent bodies and halogenated hydrocarbon. In an alkaline environment, the urolithin and halogenated hydrocarbon are subjected to an alkylation reaction to generate a target derivative. And further purifying and separating a crude product obtained by the reaction, and determining a target structure by using nuclear magnetic spectrum. The invention discloses a synthesis method of two types of urolithin derivatives, structural information and anti-inflammatory and anti-oxidation effect results on ZEA-OGCs (Zinc Ethylenediamine-Oriented Growth Cells). A reference is provided for exploring wider structural modification of urolithin substances; rich structure types provide a structural basis for activity research of urolithin substances.

This invention discloses a method for preparing trifluoromethyl olefins. The method comprises the following steps: (1) in a haloalkane solvent or ether solvent, a compound as shown in Formula I, CuX'2, CF3SO2Na, N(R) 2 (1) 4X undergoes the addition reaction shown below; (2) The product of the addition reaction in step (1) is reacted with a base in an organic solvent to undergo the elimination reaction shown below. The preparation method of trifluoromethyl olefins provided by the present invention has the advantages of being applicable to electron-rich styrene substrates, requiring less metal catalyst, not requiring high pressure conditions, not requiring photocatalysis, having easy-to-control reaction conditions, being relatively convenient for post-processing, and having a high yield.

The application discloses an electrolyte additive, an electrolyte and a battery, the electrolyte additive comprising a first additive and a second additive, the first additive comprising a compound shown in formula 1: wherein R1 and R2 are each independently selected from at least one of H, a phenyl group, a halogen, a C1-C6 hydrocarbon group, a C1-C6 halogenated hydrocarbon group, wherein R1 and R2 are not H at the same time; R3, R4 and R5 are each independently selected from at least one of a C1-C3 hydrocarbyl group, an oxygen atom, O=S=O, C=O and S=O, at least one of R3, R4 and R5 is selected from O=S=O, C=O and S=O, and at least one of R3, R4 and R5 is selected from an oxygen atom; and the second additive comprising a compound shown in formula 2: thereby, adding the electrolyte additive to the electrolyte of the battery can improve the fast-charging performance of the battery and can improve the high-temperature cycle performance.

The application belongs to the technical field of heterocyclic compound preparation, and particularly relates to a kind of bipyridine diamine ligand and its preparation method.The application provides bipyridine diamine ligand with I, II, III, IV structure, by improving the preparation process of the ligand, i.e., introducing N-containing group in the last step of reaction, reducing the polarity of the reaction product of the first two steps, and also increasing the polarity difference between the raw material and product of the third step reaction, with the advantages of simple synthesis method, easy product separation, etc.In addition, the yield of the first and second steps in the method of the application is extremely high, especially the yield of the intermediate product in the second step is close to 100%, and the yield of the product is as high as 85% in the reaction of halogenated hydrocarbon and corresponding diamine compound in the third step, because the steric hindrance of halogenated hydrocarbon is large, the generation of quaternary ammonium salt is effectively inhibited, and the yield of the product is improved.

The invention discloses preparation and application of a quaternary ammonium salt type electrolyte for a polymer-based solid-state lithium battery, and belongs to the technical field of lithium ion batteries. The preparation method of the quaternary ammonium salt type electrolyte comprises the following specific steps: weighing 3 parts of halogenated hydrocarbon derivatives, putting the halogenated hydrocarbon derivatives into an eggplant-shaped bottle, adding a proper amount of solvent, and fully stirring; 1 part of tertiary amine is weighed and added into the bottle, magnetic stirring reaction is performed for 12 h at the temperature of 90 DEG C, and an obtained solution is a quaternary ammonium salt type electrolyte intermediate; and adding 4 parts of lithium hydroxide into the reaction bottle in the previous step, reacting at 25 DEG C for 4 hours, removing the solvent, washing with the solvent, putting into a vacuum oven, and drying to obtain the quaternary ammonium salt type electrolyte. The preparation process is simple, the reaction condition of the synthesis process is mild, the conversion rate is high, the physical and chemical properties of the prepared quaternary ammonium salt type electrolyte are stable, and the polymer-based solid electrolyte membrane prepared from the quaternary ammonium salt type electrolyte has high conductivity and ion transference number and is stable in high-temperature performance.

Provided is an electrode binder composition for an electrochemical element, which has excellent viscosity stability and enables formation of an electrode having excellent peel strength. The electrode binder composition of the present invention comprises: a polymer containing a monomer unit containing a nitrile group, N-methyl-2-pyrrolidone, and a halogenated hydrocarbon, the content of the halogenated hydrocarbon being 2 mass ppm or more and 400 mass ppm or less relative to the content of the polymer.

The application provides a comprehensive decision-making and evaluation method for halogenated hydrocarbon contaminated soil and groundwater remediation strategy, comprising: establishing a site baseline and conducting technical preliminary screening based on health and ecological risk assessment (HERA) and a three-level evidence system; conducting rapid resource efficiency assessment based on environmental footprint analysis (EFA); conducting global long-term assessment based on life cycle assessment (LCA) and cost-benefit analysis (CBA); and dynamic evaluation and closed-loop control based on digital twinning and multi-criteria decision analysis (MCDA) coupling. In the dynamic evaluation stage, an adaptive hybrid dynamic weighting mechanism is constructed, the subjective benchmark weight and the objective fluctuation weight calculated based on real-time data information entropy are integrated, and the comprehensive utility score is calculated; at the same time, the apparent degradation rate constant of the pollutant is solved in real time, and when it is lower than the target rate and the strategy is replaced, the intervention instruction is automatically output. The application realizes the deep integration of multi-dimensional indicators, dynamic adaptive evaluation and closed-loop intelligent regulation and control, and solves the problems of single, static and lack of feedback of the existing evaluation method.

The invention discloses a method for rapidly extracting mRNA from mRNA-LNP, which comprises the following steps: adding a polar organic solvent and a non-polar organic solvent into an mRNA-LNP sample to obtain a mixed solution; standing or centrifuging the mixed solution, and taking an upper-layer solution to obtain an mRNA (messenger Ribonucleic Acid) solution; wherein the polar organic solvent can be selected from at least one of alcohols, ketones and amides; the non-polar organic solvent can be selected from at least one of alkanes, halogenated hydrocarbons and esters. By utilizing the method provided by the invention, the mRNA can be quickly and efficiently extracted from the mRNA-LNP, the operation is simple, and the sample loss is small.

The application belongs to the technical field of all-solid-state lithium batteries, and relates to a composite binder, a preparation method thereof and application of the composite binder in all-solid-state lithium batteries. The composite binder is that a surfactant is attached to the surface of a halogenated hydrocarbon polymer, and the mass fraction ratio of the surfactant and the halogenated hydrocarbon polymer is 1:9-99. Compared with the disclosed dry method, the adhesion of the binder is significantly improved, and the amount of the binder used in preparation of a polymer-sulfide flexible solid-state electrolyte (0.05%-3%) is reduced. The obtained sulfide composite solid-state electrolyte has excellent ductility, flexibility and relatively high ion conductivity (>=10 ‑3 S / cm), which is beneficial to large-scale production of high-load and high-capacity all-solid-state lithium batteries.