224 results about "Bromine" patented technology

The invention provides a surface-modified sulfide electrolyte and a preparation method thereof, and an all-solid-state battery, the surface-modified sulfide electrolyte comprises a sulfide electrolyte and a modification layer coated on the surface of the sulfide electrolyte, the chemical general formula of the modification layer is LiaMbNcXd, 0 < = a < = 3, 0 < = b < = 1, 0 < = c < = 1, 0 < = d < = 6, and 0 < = c < = 1. M is at least one element of magnesium, aluminum, calcium, iron, zirconium, niobium, tantalum, tungsten, gadolinium, yttrium, indium, hafnium, lanthanum and ytterbium, and X is at least one element of oxygen, sulfur, fluorine, chlorine, bromine and iodine. According to the surface-modified sulfide electrolyte, the modification layer with high ionic conductivity and high oxidation potential is coated outside the sulfide electrolyte, so that when the surface-modified sulfide electrolyte is applied to a positive electrode of an all-solid-state battery, the modification layer can improve the oxidation potential of the electrolyte on the premise of not reducing the ionic conductivity of the electrolyte; the effects of improving the interface stability between the positive electrode active material and the sulfide electrolyte and further improving the cycle performance of the battery are achieved.

The invention discloses a high-voltage-resistant brominated flame-retardant polyamide composition and a preparation method thereof, and belongs to the technical field of flame-retardant materials. The composition comprises the following components in percentage by mass: 30-80 wt% of aliphatic polyamide, 10-30 wt% of a brominated flame retardant, 0.5-10 wt% of an antimony-based synergist, 0.5-10 wt% of aromatic zinc carboxylate, 0.5-5 wt% of hydroxyapatite, 0.1-50 wt% of a reinforcing agent and 0-5 wt% of other auxiliaries, the sum of the contents of all the components is 100 wt%, and the raw material components are subjected to melt blending processing through a single-screw or double-screw extruder. The invention provides the high-voltage-resistant brominated flame-retardant polyamide composition, the relative tracking index (CTI) of the high-voltage-resistant brominated flame-retardant polyamide composition is greater than 400V, and the high-voltage-resistant brominated flame-retardant polyamide composition has high-level flame retardance and cost effect.

The invention belongs to the technical field of comprehensive utilization of seawater resources, and particularly relates to a green circulation method and system integrating seawater desalination and high-efficiency bromine extraction of concentrated seawater, and the system comprises a seawater desalination unit, a pretreatment unit, an oxidation replacement unit, a bromine elementary substance blowing-out unit, a bromine elementary substance absorption and enrichment unit and a bromine rectification and purification unit which are sequentially connected in series, the pipelines of the units are communicated to form a continuous material channel; the seawater desalination unit is used for producing fresh water and enriching concentrated seawater; the pretreatment unit removes impurities through a security filter and adjusts pH through an acidification pool; the oxidation replacement unit mixes chlorine and concentrated seawater through a gas-liquid mixer, and a bromine solution is generated in a reaction tank; the stripping tower realizes bromine gas stripping through atomization spraying, a filler area and a gas distributor; the absorption tower enriches bromine into hydrobromic acid by using a sulfur dioxide aqueous solution; the rectification unit is oxidized by a distillation tower, condensed and separated to obtain liquid bromine. The method realizes synchronous recovery of fresh water and bromine resources, conforms to a green circulation concept, and has remarkable economic and ecological benefits.

A solid electrolyte according to one aspect of the present invention contains a lithium element, a phosphorus element, a silicon element, a sulfur element, and a halogen element, in which the molar ratio (Si / (P+Si)) of the content of the silicon element to the total content of the phosphorus element and the silicon element is 0.04-0.55 inclusive, the molar ratio (S / (P+Si)) of the content of the sulfur element to the total content of the phosphorus element and the silicon element is 3.50-4.10 inclusive, the halogen element contains at least one of a bromine element and an iodine element, and the molar ratio ((Br+I) / X) of the total content of the bromine element and the iodine element to the content of the halogen element is 0.80 or more, and the solid electrolyte has a predetermined crystal structure.

The application belongs to the technical field of bromine flame retardant polymer preparation, and particularly relates to a preparation method of brominated polystyrene, wherein, in the presence of a soluble catalyst, chlorinated bromine is used as a brominating agent to brominate high molecular weight polystyrene; after the reaction is completed, the product is separated from the reaction system through the action of temperature reduction and an additive; the solid is washed and dried to obtain the product; and the mother liquor is recycled for the next bromination reaction. The synthesis method not only realizes the recycling of the solvent and the catalyst, reduces energy consumption and wastewater discharge, but also has high bromine content, good whiteness, high weight average molecular weight and good thermal stability.

The utility model relates to the technical field of rectification devices, in particular to a bromine rectification device, which improves the waste heat utilization effect, reduces the heating energy consumption of a tank body for bromine, simultaneously improves the convenience of bromine rectification, improves the circular flow effect of bromine in the tank body, reduces the deposition of bromine at the bottom in the tank body, and improves the processing quality. Comprising a tank body and a steam pipe communicated with the upper part of the outer side wall of the tank body; the upper end and the lower end of the circulating pipe are both installed on the inner side wall of the tank body, the first pump body is installed at the bottom end of the tank body, the output end of the first pump body communicates with the bottom end of the circulating pipe, and the conveying pipe communicates with the input end of the first pump body; a plurality of input ends of the conveying pipe are communicated with the tank body, a plurality of groups of reflux inlets are communicated with the upper part of the outer side wall of the circulating pipe, and the stirring device is arranged in the tank body and is used for stirring bromine.

This invention relates to a method for treating sodium bromide wastewater during the production of photoinitiators. The method includes vacuum distilling the sodium bromide wastewater in the presence of an adsorbent until sodium bromide precipitates, adding sulfuric acid and mixing, filtering, and adding hydrogen peroxide to the filtrate to react and obtain bromine. The bromine is then collected by distillation and separation. The method described in this invention can recover bromine from the wastewater during the preparation of photoinitiators and convert it into bromine, thereby achieving the recycling of bromine, reducing process costs and the pressure of treating waste gas, wastewater, and solid waste.

The invention firstly discloses a bromine adsorption electrode and a bromine catalytic oxidation electrode, the bromine adsorption electrode comprises a first electrode substrate, an adsorption active substance CoO material loaded on the first electrode substrate and Fe and N co-doped nickel-cobalt layered bimetal hydroxide, the bromine catalytic oxidation electrode comprises a second electrode substrate and a Co < 2 > O < 3 > material which is loaded on the second electrode substrate and is co-doped with catalytic oxidation active substances Ni, Fe and N. The invention also discloses a method for separating and extracting bromine from a bromine-containing solution with low bromine concentration and high chlorine-bromine ratio, and a bromine separation and extraction process system with integrated coupling of adsorption, enrichment, oxidation and separation and refining is constructed, the bromine catalytic oxidation electrode is adopted in the oxidation process, and the problem of how to efficiently extract and recover bromine resources from a solution system with low bromine concentration and serious interference (high chlorine-bromine ratio) of high-concentration chloride ions is effectively solved.

This invention relates to "a method for synthesizing monobromotrifluoropropylene," belonging to the field of organic chemical synthesis. In this method, pentachloropropane (CCl3-CH2-CHCl2), bromine gas (Br2), and anhydrous hydrogen fluoride (HF) are reacted with a fluorination catalyst to generate monobromotrifluoropropylene (CF3-CBr=CH2) in the gas phase. This invention utilizes inexpensive and readily available raw materials; the product separation and purification are simple; it is easy to industrialize; and it generates minimal industrial waste.

The invention discloses a preparation method of 1-bromo-adamantane, and aims to provide an industrial preparation scheme of 1-bromo-adamantane, and the technical scheme is as follows: firstly adding liquid bromine into an acid-corrosion-resistant glass-lined reaction kettle, slowly adding adamantane according to the mass ratio of adamantane to liquid bromine being 1: 2, sampling, detecting and reacting, then steaming bromine, then adding a dispersing agent, and reacting for 2-3 hours; and separating the residual elemental bromine to obtain the 1-bromo adamantane. The method has the characteristics of high reaction safety, low bromine consumption, mild reaction, high comprehensive cost and the like.

The invention belongs to the technical field of preparation of high-molecular brominated flame retardants, and particularly relates to a preparation method of brominated polystyrene, which comprises the following steps: in the presence of a soluble catalyst, carrying out bromination reaction on high-molecular-weight polystyrene by taking bromine chloride as a brominating agent, and after the reaction is finished, separating out a product from a reaction system under the action of cooling and auxiliaries, thereby obtaining the brominated polystyrene. Washing and drying the solid to obtain a product, and applying mother liquor to the next bromination reaction. According to the synthesis method, recycling of the solvent and the catalyst is achieved, energy consumption and wastewater discharge are reduced, and the prepared product is high in bromine content, good in whiteness, high in weight-average molecular weight and good in thermal stability.

The utility model discloses a kind of from production acid-base's concentrated seawater bromine extraction resource system, it is related to seawater resource technology field, including parallel coupling configuration's air blow method seawater bromine extraction system and bipolar membrane acid-base system;On the basis of seawater bromine extraction system using air blow method, introduce bipolar membrane electrodialysis as bypass system, handle part seawater, obtain the acid-base of satisfying production requirement concentration, use acid for subsequent seawater acidification process, alkali is used to neutralize the acidic bromine extraction mother liquor generated.The method does not affect the original seawater bromine extraction process under the premise, by adjusting the acid-base concentration and feed liquid treatment capacity of bipolar membrane acid-base system, both can satisfy seawater bromine extraction process system's acid-base use demand, also can produce economic value's acid-base product outside sale according to actual operation situation.In the realization of waste liquid standard discharge, reduce the demand of enterprise acid-base acquisition, can provide feasibility strategy for enterprise cost reduction and efficiency improvement.

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 relates to the chemical technology related to mineral salts and can be used in the chemical industry. A process for the production of ammonium bromide from a bromine-containing polycomponent aqueous mineral raw material, comprising: two-stage oxidation of bromine ions during acidification of the brine using gaseous chlorine; air desorption of the primary bromine; absorption of the same using a cooled solution of ammonium bromide; and reduction using an ammonia solution. The resulting concentrated solution of ammonium bromide is evaporated until crystals are formed. The ammonium bromide crystals are dried, and the mother liquor is used to produce a solution of ammonium bromide as a commercial product.

The invention relates to the technical field of water treatment, and discloses a method and a device for recycling bromine triions based on irradiation coupling electronic control ion exchange and application, the method comprises the following steps: placing a bromine-containing stock solution in an electronic control ion exchange device which is a single-chamber device, irradiating the bromine-containing stock solution by using gamma rays, bromine ions in the bromine-containing stock solution are oxidized and react to form bromine triions; and then switching on a circuit and applying an oxidation potential to the working electrode to drive the bromine triions to directionally move towards the membrane and adsorb the bromine triions, and selectively recovering the bromine triions. The device comprises a single-chamber reactor, a liquid path system, a gamma-ray irradiation source for the single-chamber reactor, an electrochemical driving system, a two-electrode system with electrodes immersed in a bromine-containing stock solution, and a potential control system.

This is a halomethylated polyphenylene ether containing a specific amount of repeating units represented by structural formulas (I), (II), and (III) (wherein X is chlorine or bromine). This halomethylated polyphenylene ether is considered particularly suitable for subsequent quaternization. The use of the described material in applications such as ion exchange membranes is also discussed. JPEG2026520833000067.jpg27170(I) JPEG2026520833000068.jpg34170(II) JPEG2026520833000069.jpg26170(III)

The invention belongs to the field of perovskite devices, and particularly discloses a bromine-chlorine mixed blue-light perovskite thin film, a preparation method and a perovskite LED device. The bromine-chlorine mixed blue-light perovskite thin film is prepared from the following raw materials: cesium halide, lead bromide, lead chloride and alkaline earth metal bromide; the alkaline earth metal bromide comprises at least one of calcium bromide, strontium bromide and barium bromide; the ratio of the mole number of the alkaline earth metal bromide to the total mole number of Pb in lead bromide and lead chloride is not greater than 0.5. The bromine and chlorine mixed blue light perovskite is doped by adopting the alkaline earth metal bromide with a low-solubility perovskite phase, and the molar ratio of the doping amount of the alkaline earth metal bromide is not higher than 0.5, so that the nonuniform bromine and chlorine distribution of the blue light perovskite thin film in the film forming process is improved, the halogen separation under an electric field is inhibited, and the spectral stability is improved; by directly doping in the precursor, the preparation process is simple, and the method is suitable for large-scale industrial production.

The invention discloses a halogen modified hapten for enhancing antibody titer and affinity as well as a preparation method and application of the halogen modified hapten, and belongs to the technical field of biochemical engineering. According to the method, an amantadine structure is innovatively and chemically modified, various halogens such as fluorine, chlorine and bromine are introduced, the AMA halogen modified hapten shown in the formula (I) is formed, and the traditional'most similar 'design principle is broken through. Compared with an unmodified hapten, the hapten modified by halogen in the invention has the advantages that the titer of the polyclonal antibody on amantadine can be obviously improved by 3.4-14 times; wherein the haptens A5 and A6 can obviously improve the titer of the monoclonal antibody to amantadine by 3-18 times, and the affinity is improved by 10.8-16.1 times. The invention provides a new thought and a new method for the rational design of the hapten of the small molecule compound and the preparation of the high-affinity antibody, and the related halogen modification type and quantity strategy can also provide valuable reference for the design of the hapten of other small molecule compounds.

This invention discloses an asymmetric (α-diimine) nickel-olefin catalyst based on ethylene acenaphthene as its framework, its preparation method, and its applications. The structural formula of the catalyst is shown in Formula (I), where X is chlorine or bromine. The catalyst has a simple preparation process and exhibits results contrary to conventional experimental observations when catalyzing ethylene polymerization: larger substituents lead to higher crystallinity in the polymerization product. Furthermore, this type of catalyst also exhibits good thermal stability and polymerization activity, showing promising prospects for industrial applications. Formula (I)

The application relates to a large-size orthorhombic phase bromine lead cesium single crystal and a solution growth method and application thereof, and belongs to the technical field of crystal materials. The application comprises the following steps: (1) mixing water and dimethyl sulfoxide uniformly, adding cesium bromide and lead bromide to obtain a bromine lead cesium solution; (2) overheating the bromine lead cesium solution at 70-80 DEG C for 24-48h to obtain a bromine lead cesium growth solution; and (3) growing the bromine lead cesium seed in the bromine lead cesium growth solution or spontaneously nucleating and growing under a sealed condition to obtain a large-size orthorhombic phase bromine lead cesium single crystal. The application uses a mixed solution of water and dimethyl sulfoxide as a solvent of cesium bromide and lead bromide for the first time, lets water participate in the growth of the bromine lead cesium crystal, changes the inverse temperature crystallization property of the CsPbBr3 crystal, changes the solubility of the CsPbBr3 crystal from an inverse temperature curve into a positive temperature curve, realizes the temperature-reducing controlled growth of the crystal, and effectively avoids the generation of other by-products of the bromine lead cesium.

The application provides arginine functionalized copper-aluminum layered double hydroxide, a preparation method and application. The preparation method comprises the following steps: reacting an alkaline mixed reaction solution containing arginine, a copper salt and an aluminum salt, and aging after the reaction is completed to obtain arginine functionalized copper-aluminum layered double hydroxide. The arginine functionalized copper-aluminum layered double hydroxide provided by the application is suitable for extracting iodine from an iodine-containing material solution or separating bromine and iodine, has excellent adsorption efficiency and adsorption capacity for iodine, and the iodine-bromine separation factor can reach more than 300, so that the separation of bromine and iodine can be realized.

The invention discloses a method for detecting the content of free carbon in a tungsten-titanium solid solution, and belongs to the field of analytical chemistry. According to the method, based on the adsorption effect of the free carbon on bromothymol blue, an adsorption reaction is carried out in an acidic buffer system, and selective adsorption of the free carbon is realized; and then carrying out solid-liquid separation, alkalifying the filtrate, measuring the absorbance under the wavelength of 574nm, and calculating the content of free carbon by using a standard curve method according to the absorbance difference. The method has the advantages of simplicity and convenience in operation, low cost, no use of strong corrosive acid, environmental friendliness and the like. Compared with a high-frequency infrared method, the precision is remarkably improved, and the method is suitable for rapid and accurate determination of free carbon in the tungsten-titanium solid solution.

The present invention provides a rubber component with excellent corrosion resistance, and semiconductor manufacturing-related equipment using the same. [Solution] A rubber member comprising a halogen-based rubber containing at least one selected from the group consisting of chlorine, bromine, and iodine, wherein the rubber member is at least one selected from the group consisting of building materials, mobility materials, aerospace materials, semiconductor materials, and information and communication materials, and is a rubber member that comes into contact with corrosive substances.

The invention provides a copper plating additive for an insoluble anode oxygen evolution reaction system and a preparation method and application of the copper plating additive, the structural formula of the copper plating additive for the insoluble anode oxygen evolution reaction system is shown in the specification, X is halogen of chlorine or bromine, R1, R2 and R3 comprise at least one polar functional group and at least one nitrogen-containing heterocyclic ring structure, and R1, R2 and R3 comprise at least one polar functional group and at least one nitrogen-containing heterocyclic ring structure. The polar functional group is selected from at least one of sulfydryl, ether bond or hydroxyl, and the nitrogen-containing heterocyclic ring structure is selected from at least one of pyrrolyl, pyridyl and pyrazinyl. And the copper plating additive prevents oxidative decomposition, improves the uniformity of the plating layer and improves the deep plating capability of the through hole.

The application provides a synthesis method of 9,10-dibromoanthracene, by introducing HBr generated by a solvent water adsorption reaction, using an industrial sodium hypochlorite solution to react the HBr into bromine, ensuring high concentration of bromine, introducing a solvent dichloroethane to uniformly disperse raw materials, keeping the concentration of bromine stable in the reaction, greatly promoting the reaction speed, greatly shortening the reaction time, and converting the sodium hypochlorite into a sodium chloride aqueous solution after the reaction is completed. The purity of the prepared 9,10-dibromoanthracene is more than 99%, and the by-products generated in the reaction are environment-friendly and non-polluting.

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 utility model provides a bromine storage tank. The bromine storage tank comprises a tank body, a nitrogen inlet is formed in the top of the tank body and is connected with a nitrogen supply pipeline; a bromine feeding hole is formed in the top of the tank body and is connected with a bromine supply pipeline; the bromine storage tank further comprises a feeding bottom inserting pipe, one end of the feeding bottom inserting pipe is connected with the bromine feeding port, and the other end of the feeding bottom inserting pipe is close to the bottom of the tank body. A bromine discharge hole is formed in the bottom of the tank body; the tank body further comprises a temperature control jacket; and electric tracing bands are uniformly distributed in the temperature control jacket. According to the bromine storage tank, top feeding is matched with a feeding bottom inserting pipe, and harm caused by bromine leakage in the feeding process is reduced; furthermore, nitrogen sealing is realized in cooperation with nitrogen inlet, so that volatilization of bromine is avoided; the temperature control jacket is arranged, so that the temperature can be quickly adjusted, and bromine solidification caused by too low environment temperature is avoided.

The invention relates to the field of flame-retardant materials, in particular to an environment-friendly brominated flame-retardant ASA material and a preparation method thereof. The material comprises the following components in parts by weight: 100 parts of an ASA resin matrix, 8-12 parts of a brominated flame retardant, 2-8 parts of a synergistic flame retardant, 1-5 parts of a reinforcing agent, 0.2-0.6 part of an antioxidant, 0.5-1 part of an ultraviolet light absorber, 0.2-0.5 part of a light stabilizer and 1-2 parts of a lubricant. Compared with a traditional brominated flame retardant system, the synergistic flame retardant PODA-TA prepared by the preparation method disclosed by the invention can also realize an excellent flame retardant effect without adding high bromine. The synergistic flame retardant PODA-TA can replace traditional antimony trioxide to serve as a more efficient synergistic agent, the bromine consumption is reduced by 40% or above, and meanwhile the precipitation resistance and weather resistance can be greatly improved.

The utility model relates to the technical field of bromine production equipment, in particular to a bromine multi-stage dehumidification device which comprises a dehumidification tank, supporting legs which are symmetrically distributed are fixedly installed on the two sides of the bottom of the dehumidification tank, a drying tower is fixedly installed on the top of the dehumidification tank in an embedded mode, and a feeding pipe is fixedly installed on the top of the drying tower in a penetrating and penetrating mode. According to the bromine multi-stage dehumidification device, through cooperative use of the dehumidification tank, the supporting legs, the visual window, the feeding pipe, the drying box, the guide pipe, the inner box, the discharging pipe, the blocking net, the drying tower, the first electric valve, the second electric valve and the liquid discharging pipe, dehumidification modes of different principles are integrated, and multi-stage dehumidification is achieved on bromine. The method comprises the following steps: contacting bromine with concentrated sulfuric acid, removing most of water by using strong water absorption of the concentrated sulfuric acid, and discharging water-containing sulfuric acid in a layered manner through density difference; enabling the preliminarily dried bromine to pass through a drying box filled with anhydrous calcium chloride and a molecular sieve, and deeply adsorbing residual moisture;

The invention relates to the fields of chemistry and chemical engineering, organic synthesis and medicinal chemistry, in particular to a method for synthesizing 5-bromo-2-chlorobenzoic acid by adopting a microchannel reaction device. The method comprises the following steps: I, mixing 2-chlorobenzoic acid and sulfuric acid to obtain a reaction solution A; mixing bromine, sodium periodate, liquid organic acid and water to obtain a reaction solution B; and II, feeding the reaction liquid A and the reaction liquid B into a micro mixer of a micro-channel reaction device for mixing, then feeding the mixture into a micro reactor of the micro-channel reaction device for contact reaction, and carrying out post-treatment on contact reaction effluent to obtain the 5-bromo-2-chlorobenzoic acid. The method has the advantages of high product selectivity, high yield, high purity, convenient process, low production cost, and less by-product and three-waste pollution.