582 results about "Halogenation" patented technology

The invention belongs to the technical field of nylon materials, and particularly relates to a high-heat-resistance halogen-free flame-retardant nylon material and a preparation method thereof. According to the invention, PA6 and PA66 base materials are compounded by utilizing the high heat resistance of PA66 and the processability advantage of PA6, and the heat deformation temperature of the material is improved through the synergistic effect of the modified glass fiber reinforcing agent and the antioxidant, so that the heat-resistant requirements of high-end scenes such as new energy automobile battery components and high-temperature electronic components are met. Halogen flame retardants are completely abandoned, the modified halogen-free flame retardant is adopted, the flame retardant effect is achieved, meanwhile, no harmful halogen hydride gas or dioxin is released during combustion, and the material still keeps excellent rigidity and toughness on the basis of high flame retardance and high heat resistance and is suitable for popularization and application. The problem that the mechanical property of a traditional halogen-free flame retardant is reduced due to high addition amount is solved.

Hybrid catalysts for simultaneous dehalogenation and cracking of plastic derived oil include composite particles, where each of the composite particles includes red mud particles and Mordenite zeolite particles. A process includes contacting a plastic derived oil stream with the hybrid catalyst in an FCC reactor to produce an FCC effluent and a used hybrid catalyst. The plastic derived oil stream comprises halogen-containing compounds, and contacting the plastic derived oil stream with the hybrid catalyst causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, where the hydrogen halides are adsorbed onto surfaces of the red mud particles. The FCC effluent has a concentration of the halogen-containing compounds less than the plastic derived oil stream. Contacting the plastic derived oil stream with the hybrid catalyst causes hydrocarbons in the plastic derived oil stream to undergo cracking reactions over the Mordenite zeolite particles to produce the FCC effluent.

Processes for decontaminating a plastic derived oil include contacting a plastic derived oil stream containing halogen-containing compounds with a decontamination catalyst at a reaction temperature of 350-450° C. to produce a decontaminated plastic derived oil and a used decontamination catalyst. The decontamination catalyst includes from 5-40 wt. % red mud particles, from 20-60 wt. % matrix material, and from 10-30 wt. % binder, per unit weight of the decontamination catalyst. Contacting the plastic derived oil stream with the decontamination catalyst at the reaction conditions causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, which further react with the red mud particles to produce metal halides on surfaces of the red mud particles. The decontaminated plastic derived oil has a concentration of the halogen-containing compounds less than a concentration of the halogen-containing compounds in the plastic derived oil stream.

The invention discloses a preparation method of 2-chloro-4-(4-fluoro-2-methylphenyl)-5-aminopyridine as an elinnetin intermediate, and belongs to the technical field of medicine synthesis. According to the invention, cheap and easily available 3-nitro-4-hydroxypyridine is used as an initial raw material, and the 2-chloro-4-(4-fluoro-2-methylphenyl)-5-aminopyridine is synthesized at low cost and high yield through the steps of halogenation, coupling, hydroxylation, reduction, condensation and the like. The raw materials used in the whole process are simple and easy to obtain, the reaction conditions are milder, and the reaction route is short. According to the invention, the Suzuki coupling reaction is firstly carried out, and then the hydroxylation of the pyridine 2 position is carried out, so that the use of an anhydrous reagent and harsh anhydrous reaction conditions are effectively avoided, and the reaction cost is remarkably reduced. In addition, the method is easy and convenient to operate, good in stability, high in total yield and suitable for industrial large-scale production.

The invention relates to a surface-modified co-doped lithium-rich manganese-based positive electrode material and a preparation method thereof. The surface-modified co-doped lithium-rich manganese-based positive electrode material comprises a bulk phase part and a surface part, the bulk phase part is a cation co-doped lithium-rich manganese-based material, the chemical formula is Li < 1.2 > Ni < 0.17 > Co < 0.16-x > M < x > Ru < y > Mn < 0.47-y > O < 2 >, in the formula, M is at least one of V, Cr and Fe, x is more than or equal to 0.06 and less than or equal to 0.14, and y is more than or equal to 0.05 and less than or equal to 0.2; the surface part is a selenium-halogen composite modified layer coating the bulk phase part in situ, contains selenide and lithium halide, and is formed by heat treatment of a bulk phase material, a selenium source and a halogen source in an inert atmosphere. The positive electrode material provided by the invention has excellent structural stability and high lithium ion diffusion coefficient, has good interface compatibility with halide electrolyte, and has high energy density and long cycle stability when being used in a halide all-solid-state battery.

A hybrid catalyst for simultaneous dehalogenation and cracking of plastic derived oil includes a plurality of composite particles, where each of the composite particles includes red mud particles and USY zeolite particles. A process for upgrading plastic derived oil includes contacting the plastic derived oil with the hybrid catalyst in an FCC reactor to produce an FCC effluent and a used hybrid catalyst. The plastic derived oil comprises halogen-containing compounds, and the contacting at reaction conditions causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, which are adsorbed onto surfaces of the red mud particles. The contacting at reaction conditions also causes hydrocarbons in the plastic derived oil to undergo cracking reactions to produce the FCC effluent. The FCC effluent may have a reduced concentration of the halogen-containing compounds. A system that includes the hybrid catalyst is also disclosed.

The invention belongs to the technical field of preparation of herbicides, and particularly relates to a preparation method of tralkoxydim. The preparation method comprises the following steps: carrying out ethylation reaction on 3-hydroxy-5-(2, 4, 6-trimethylphenyl)-2-propoximido-cyclohex-2-ene-1-ketone and halogenated ethane under an alkaline condition, so as to prepare tralkoxydim. According to the method, the use of ethoxyamine hydrochloride or ethoxyamine in the traditional process is innovatively avoided, the raw material cost is reduced, the ethylation reaction is carried out by using halogenated ethane, the reaction raw materials are cheap and easy to obtain, meanwhile, single sodium / potassium halide wastewater is produced, the wastewater treatment process is greatly simplified, meanwhile, the generation of carnallite wastewater and carnallite-containing solid waste is eliminated, and the method is suitable for industrial production. The method has the advantages of environmental protection, economy and simple process, and is suitable for industrial large-scale production.

Provided is a method for producing an organohalogen compound with which it is possible to produce an organohalogen compound with high selectivity and high yield. A method for producing an organohalogen compound, which comprises a halogenation step for obtaining an organohalogen compound (A) represented by formula (1) by halogenating a compound represented by formula (1 [alpha]) as a starting material, the halogenation step being a step for halogenating in a multiphase-containing system, the plurality of phases include an organic phase containing an organic solvent as a solvent and an aqueous phase containing water as a solvent.

The invention provides a surface-modified perovskite nanocrystal and a preparation method and application thereof, and the surface-modified perovskite nanocrystal comprises: a perovskite nanocrystal having a chemical composition of ABX3; wherein A is selected from at least one of Cs < + >, CH3NH3 < + > and HC (NH2) 2 < + >; b is selected from at least one of Pb < 2 + >, Sn < 2 + >, Ge < 2 + > and Mn < 2 + >; x is selected from halogen anions; the surface of the perovskite nanocrystal is coated with an organic ligand layer; the organic ligand comprises a halogenated organic ligand. In the surface modified perovskite nanocrystal, the surface of the perovskite nanocrystal is coated with the organic ligand layer, so that surface defects can be effectively passivated at the same time, and the surface integrity and the crystallization quality of the nanocrystal are remarkably improved. And due to the surface consistency, the defect state density is reduced, and the exciton and phonon coupling coefficient is reduced, so that a non-radiative composite channel is remarkably inhibited, and the optical performance of the perovskite nanocrystal is remarkably improved.

The application belongs to the field of photoelectric functional materials, and discloses a blue light excitable Cu-based fluorescent material and a preparation method thereof. The material is obtained by room temperature reaction of 4-pytrz and halogenated cuprous CuX (X=Br, I), wherein 4-pytrz is 4-(4H-1,2,4-triazole-4-yl)pyridine. Two highly stable coordination polymers, complex 1 [CuBr(4-pytrz)2] n and complex 2 [Cu2I2(4-pytrz)] n are designed and synthesized, which have good thermal stability, exhibit a wide excitation band covering from deep ultraviolet light to blue light region, and have a quantum efficiency of 19.36% under blue light excitation. The complexes exhibit effective solid-state emission and enhanced light stability, and have wide application prospects.

This invention belongs to the field of two-dimensional material preparation technology, and provides an MXene material and its preparation method. The preparation method of the MXene material includes: mixing a MAX phase precursor to be etched with an organic halide reagent and a morphology modifier, performing a solvothermal etching reaction, and after the reaction, washing and drying the resulting product to obtain the MXene material; wherein the organic halide reagent is triethylamine trihydrofluoride, triethylamine hydrochloride, or dichloroethylamine hydrochloride, and the morphology modifier is ethylene glycol, dimethyl sulfoxide, or cyclohexane. The method of this invention can effectively control the microstructure and pore structure of the MXene material.

A method for manufacturing a perovskite quantum dot composite material that easily forms core-shell particles through a one-stage synthesis step is provided, along with the perovskite quantum dot composite material and an ink containing the perovskite quantum dot composite material. This perovskite quantum dot composite material suppresses surface defects of the perovskite quantum dots by forming an ionic crystal layer comprising halides in the shell layer and exhibits a very high PLQY (Power Level Quality). The perovskite quantum dot composite material comprises core particles and a shell layer surrounding the core particles. The core particles are composed of metal halide perovskites, and the shell layer comprises an organic halide compound with an ionic crystal structure having the same halogen composition as the core particles. The PLQY is greater than 75%, and the change in emission wavelength is less than 5 nm over a period of 10,000 minutes at room temperature.

The invention provides a preparation method of (S)-(+)-1-methoxy-2-propylamine hydrochloride, which comprises the following steps: taking (S)-(+)-2-amino-1-propanol as a raw material, carrying out halogenation reaction and amino protection, then carrying out methylation reaction with methanol, and finally carrying out amino deprotection by using hydrochloric acid to obtain the product (S)-(+)-1-methoxy-2-propylamine hydrochloride. The method is suitable for industrial production.

This invention discloses a fluorine-free oil-resistant agent for internal sizing, its preparation method, and its application method, belonging to the field of papermaking additives technology. Using agricultural waste as raw material, silicon carbide and silicon dioxide are mixed and pyrolyzed with nitrogen and dichloromethane. The pyrolysis products are condensed and allowed to stand to obtain an aqueous phase, a hydrophobic and oleophobic phase, and a dichloromethane phase. The hydrophobic and oleophobic phase is treated to generate chain-like siloxane compounds. These are then added to the dichloromethane phase and subjected to a halogenation reaction to generate halosiloxane compounds. The dehydrated aqueous phase is then added to the halosiloxane compounds to undergo an oxidation reaction, generating siloxane oxide compounds, i.e., the fluorine-free oil-resistant agent for internal sizing. The fluorine-free oil-resistant agent for internal sizing prepared by this method is used in the wet-end chemical stage of papermaking. It can be dispersed in water and adsorbed onto fibers. During the papermaking drying stage, it cross-links with the fibers through esterification, giving the paper good ring crush strength and oil-resistant effect.

This invention relates to the field of exhaust gas treatment technology, specifically to an exhaust gas treatment process and equipment for the recovery of waste halogenated organic solvents. The exhaust gas treatment equipment includes a longitudinally arranged exhaust gas filter box and a fan connected to the filter box via an exhaust pipe. The exhaust gas filter box contains multiple activated carbon carriers with a permeable structure, each carrier having a multi-layered hollow structure. In this exhaust gas treatment process and equipment for the recovery of waste halogenated organic solvents, the multi-layered structure allows for the layering of activated carbon particles. When the bottom layer of activated carbon particles becomes saturated, the movement of a pusher quickly transfers these particles to other areas, enabling the upper-layer particles to reach the bottom in a short time. This improves the efficiency of activated carbon particle relocation and prevents the particles from being worn or broken by the pushing method.

The present invention relates to a composite material, wherein the composite material comprises porous carbon and cerium nitrohalide within the porous carbon. In addition, the present invention relates to a method for preparing the composite material, comprising: enabling a haloalkylated resin to react with a nitrogen-containing organic compound to obtain a nitrogen-modified halogen-containing resin; optionally, washing the nitrogen-modified halogen-containing resin by means of a halide salt solution; and mixing the nitrogen-modified halogen-containing resin with a cerium precursor, and then calcining the mixture in an inert gas atmosphere to obtain the composite material. When such a cerium-carbon porous composite material is used as a catalyst in a transesterification reaction, the conversion rate of the reaction can be significantly improved.

The invention relates to a process for preparing 1,2′-benzisothiazoline-3-one according to formula (I), comprising the following steps: (a) reacting a 2-halogenbenzonitrile compound of general formula (II) with a reaction mixture, containing: (i) alkaline sulphide and / or alkaline hydrogen sulphide and (ii) an alkyl halide compound, represented by general formula (III): R1X (III) for producing an intermediate product of general formula (IV), and (b) reacting the intermediate product of general formula (V) obtained in step (a) with a halogenating agent or an oxidant and subsequent reaction of the 2-(alkylsulfoxy)benzonitrile with an acid to form 1,2-benzisothiazoline-3-one as well as a halide compound of general formula (V) R1X (V).

The invention belongs to the technical field of adsorption material preparation, and relates to an anion defect type prussian blue analogue and a preparation method and application thereof in cesium adsorption.The preparation method comprises the steps that imidazole and halogenated alkane are subjected to an alkylation reaction and anion exchange to prepare ionic liquid, and after water is added, an ionic liquid-water mixed solvent is obtained; the method comprises the following steps: respectively dissolving transition metal nitrate and potassium ferrocyanide into an ionic liquid-water mixed solvent, dropwise adding a potassium ferrocyanide solution into a transition metal nitrate solution, and stirring to obtain a mixed solution; and carrying out hydrothermal reaction on the mixed solution, cooling to room temperature, washing the material, and drying to obtain the anion defect type prussian blue analogue. The cesium ion adsorption capacity and the cesium ion cycling stability are improved by precisely regulating and controlling anion defects in the Prussian blue analogue, and the cesium ion adsorption material has good ion interference resistance in a complex water environment and shows excellent adsorption selectivity and a wide application range.

A method of forming a metal phosphide film on a substrate using a cyclical deposition process includes contacting the substrate with a vapor-phase metal precursor, contacting the substrate with a vapor-phase halogenating agent, and contacting the substrate with a vapor-phase phosphorus-containing precursor. A method of filling a gap includes placing a substrate in a reaction chamber, wherein the substrate comprises a gap; forming a flowable metal halide on the substrate to fill the gap; and converting the flowable metal halide into a metal phosphide.

This invention discloses a method for the biosynthesis and application of fluorinated phenazine and its derivatives, belonging to the field of bioengineering technology. The invention aims to provide a method for synthesizing fluorinated phenazine and its derivatives. Specifically, it provides an in vitro enzyme cascade catalytic reaction method for synthesizing fluorinated phenazine and its derivatives, in which halogenated methyltransferase HMT1 and O-methyltransferase LaphzM, or halogenated methyltransferase HMT1 and N-methyltransferase PhzM, are added to a reaction buffer containing 1-hydroxyphenazine and its derivatives to obtain fluorinated phenazine and its derivatives. The enzyme concentrations of halogenated methyltransferase HMT1 and O-methyltransferase LaphzM are 2:1; the enzyme concentrations of halogenated methyltransferase HMT1 and N-methyltransferase PhzM are 2:1. This establishes a pathway for the synthesis of fluorinated phenazine from 1-hydroxyphenazine and its derivatives, providing a new approach for the biosynthesis of fluorinated phenazine.

The application provides a preparation method of a polysubstituted 1,3,5-triazine, and chemical formula 1 and biuret are reacted in a solvent under the action of a catalyst to generate an intermediate chemical formula 3, and the chemical formula 3 is reacted in a solvent under the action of an acid binding agent to generate chemical formula 4. Compared with the prior art, the two-step reaction is stable, the metal ion content is controlled in the ppb level, the application range is wide, and the method can be applied to multiple fields such as photoelectricity, chemical industry, medicine and agriculture.

The invention discloses an application of halogenase in catalytic synthesis of 2 '-halogenated nucleoside. The halogenase is any one of NSH1, NSH2, NSH3, NSH4 and NSH5, and a substrate used for catalysis is any one of 2 '-deoxyguanosine, 2'-deoxyinosine and 2 '-deoxyadenosine. The biosynthesis method provided by the invention has the advantages of high reaction stereoselectivity, high product yield, simple halogen source, easily controlled operation process, low production cost, green and environment-friendly reaction, high catalytic activity and the like, and a new method is provided for synthesis of the 2 '-halide.

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 provides an antibacterial non-woven fabric material containing lipophilic monomers, a preparation method thereof, and a mask prepared from the material. The method comprises the following steps: A, preparing master batch: adding polypropylene granules, diallylamine, and a second monomer into a mixer in sequence, stirring and uniformly mixing to obtain master batch mixture, wherein the second monomer is a lipophilic monomer; then performing irradiation, extraction, and halogenation; B, mixing: adding the halogenated master batch, polypropylene granules, and additives into the mixer, stirring and uniformly mixing to obtain spinning mixture; C, extruding and melting; D, spinning; E, post-treatment and webbing; and F, winding and finishing to obtain finished non-woven fabric. The antibacterial non-woven fabric product has good bacteriostatic and sterilization effects and is safe and environmentally friendly.

The application provides a preparation method of a PARP1 inhibitor intermediate, which comprises the following steps: after 6-hydroxy nicotinic acid is reacted with nitric acid, an intermediate shown in formula I is prepared through halogenation reaction, esterification reaction, hydrolysis reaction and the like. The method has low synthesis cost and high product yield, provides a new advantageous process route for synthesis of the PARP1 inhibitor, and has industrialized popularization and application prospects.

The invention discloses a preparation method of an intermediate of macloxvir. The preparation method comprises the following steps: step 1, carrying out halogenation reaction; step 2, elimination reaction; step 3, addition reaction; step 4, ring closing reaction; the starting raw materials, the solvent and the catalyst selected in the invention are industrial-grade cheap and easily available products, have the advantage of low production raw material cost, and provide economic feasibility support for industrial large-scale production; reaction conditions of each step in the reaction process are mild, byproducts are few, the yield is high, and a target product can be prepared more efficiently; meanwhile, the synthesis route is high in atom utilization rate and excellent in atom economy, the used solvent and reagent are high in stability and easy to recycle and reuse, generation and emission of industrial three wastes are greatly reduced, the environment-friendly treatment cost is reduced, and the concept of green chemistry and sustainable development is met; the method gives consideration to economy, high efficiency and environmental friendliness, and solves the problems of low yield, violent reaction conditions and high cost of raw materials and auxiliary materials in the existing method.

The invention provides a zero-dimensional manganese-based quaternary phosphonium cation organic-inorganic hybrid metal halide as well as a preparation method and application thereof, and belongs to the technical field of material science and photoelectricity. The preparation method comprises the following steps: grinding and uniformly mixing quaternary phosphonium ionic liquid, hydrated halogenated manganese salt and oxalic acid dihydrate to obtain a mixed material; and transferring the mixed material into a high-temperature reaction kettle, carrying out high-temperature reaction, cooling to room temperature, adding ethanol into the high-temperature reaction kettle, heating, recrystallizing, and cooling to obtain the zero-dimensional manganese-based quaternary phosphonium cation organic-inorganic hybrid metal halide. According to the method, the defect that a traditional solvent volatilization method, a solvothermal method, a solvent diffusion method and the like highly depend on strong haloid acid and an organic solvent is overcome, and the technical problem of green controllable synthesis of the 0D Mn-OIMHs crystal is solved by adopting a green and environment-friendly ionothermal synthesis method.

A process comprising: contacting a cobalt salt comprising one or more cobalt halides or cobalt esters with a reducing metal and a coordination compound under conditions to produce a tetracarbonyl cobalt salt of the reducing metal, optionally in the presence of an inert solvent and carbon monoxide; b) contacting a cobalt tetracarbonyl salt of a reducing metal with a porphyrin metal halide in the presence of a coordination compound, optionally in the presence of an inert solvent, under conditions to produce a complex comprising a porphyrin metal cation wherein the coordination compound is coordinated to the metal and an anion containing cobalt tetracarbonyl.