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116results about How to "Strong oxidation ability" patented technology

Preparation method of ultra-thin high-density fiberboard with ultra-low formaldehyde emission

The invention discloses a preparation method of an ultra-thin high-density fiberboard with ultra-low formaldehyde emission, which is characterized by comprising the following steps: peeling wood by using a peeling machine, chipping to obtain wood chips, washing the wood chips with water, cooking in a cooking cylinder, feeding into a defibrator, and adding molten paraffin for treatment to obtain fibers; meanwhile, formaldehyde is taken to be mixed with sodium bentonite, triethylene diamine and polyvinyl alcohol, then urea is added in five times, melamine is added in two times, a reaction is conducted, and melamine modified urea-formaldehyde resin is prepared; taking fibers, applying an adhesive formed by mixing melamine modified urea-formaldehyde resin, nano titanium dioxide and an ammonium chloride curing agent, drying and dehydrating the fibers uniformly mixed with the adhesive, sorting to remove micelles, fiber agglomerates and fiber bundles, and paving and forming to obtain a plate blank; and the plate blank is taken to be subjected to the hot pressing procedure to obtain a plate, and after the plate is cooled, the ultra-thin high-density fiberboard with the advantages of being high in strength, low in formaldehyde emission and the like is obtained after sanding.
Owner:GUANGXI SUNWAY WOOD TECH CO LTD

Method for deeply removing readily oxidizable substances in high-purity electronic-grade phosphoric acid

The invention discloses a method for deeply removing readily oxidizable substances in high-purity electronic-grade phosphoric acid, which deeply removes the readily oxidizable substances in the high-purity electronic-grade phosphoric acid in a mode of combining ozone oxidation and resin adsorption to obtain a high-purity electronic-grade phosphoric acid finished product with extremely low readily oxidizable substance concentration. The specific process mainly comprises the following three steps: S1, introducing ozone gas at a certain temperature to oxidize readily oxidizable substances such as phosphorous acid and hypophosphorous acid in phosphoric acid into phosphoric acid so as to reduce the concentration of the readily oxidizable substances; s2, feeding the phosphoric acid subjected to ozone oxidation into an adsorption reactor to be in contact with an adsorbent, and further removing residual readily oxidizable substances in the phosphoric acid; and S3, filtering the phosphoric acid subjected to adsorption treatment through a filter element for separation, and removing residual small particles and impurities to obtain the electronic-grade phosphoric acid with readily oxidizable substances removed. The method is simple in process, controllable in condition, convenient to operate, safe and environment-friendly, does not need to add an additional solvent, avoids introduction of new impurities, reduces secondary pollution, and is suitable for preparing high-purity electronic-grade phosphoric acid.
Owner:HUBEI SINOPHORUS ELECTRONIC MATERIALS CO LTD

Sulfur-vacancy-rich ZnIn2S4-coated FeNi0. 48S1.71 heterojunction photocatalyst as well as preparation method and application thereof

PendingCN119406430AShorten migration distanceIncrease migration distanceWater treatment compoundsWater/sewage treatment by irradiationHeterojunctionElectron hole
The invention discloses a sulfur-rich vacancy ZnIn2S4 at FeNi < 0.48 > S < 1.71 > heterojunction photocatalyst as well as a preparation method and application thereof, and the photocatalyst is a sulfur-rich vacancy ZnIn2S4 at FeNi < 0.48 > S < 1.71 > heterojunction composite material with a hollow structure, which is formed by in-situ growth of a sulfur-vacancy-containing ZnIn2S4 nanosheet on the surface of a FeNi < 0.48 > S < 1.71 > hollow nanosphere. The photocatalyst provided by the invention has a larger specific surface area and a wider light absorption range, and the internal sulfur vacancy as an electron capture center can inhibit the compounding of photo-induced electron-hole pairs. The three-dimensional core-shell hollow sphere structure can reduce the recombination rate of charges, improve the mobility of electrons, show better photocatalytic performance, and have great application prospects in the fields of energy and environment.
Owner:CHENGDU TECH UNIV

Environmentally friendly mildew-proof and antibacterial corrugated paperboard and preparation method thereof

The invention relates to the technical field of paperboard products, and discloses an environment-friendly mildew-proof and antibacterial corrugated paperboard and a preparation method thereof. The quaternary ammonium salt substance of the modified terminal isocyanate polyurethane can attack the cell membrane or cell wall of microorganisms, so that the cell membrane function is affected and irreversible damage is caused to the structure of the microorganism organelles. The chemical element S is contained in the structure and has strong oxidizing and reducing properties, so that the cell membrane of microorganisms can be destroyed, organic matter can be decomposed, and the metabolism and growth environment of molds can be destroyed. The epoxy group and isocyanate group of the modified terminal isocyanate polyurethane can react with the hydroxyl group and carboxyl group on the surface of oxidized cassava starch, and at the same time, the dimethylol urea and oligomers in the urea-formaldehyde resin undergo cross-linking reaction with the hydroxyl group in the starch molecules to form a cross-linked network structure, so that water molecules are prevented from penetrating into the paper, thereby improving the bonding strength and water resistance of the corrugated paperboard.
Owner:ZHANJIANG YUHUA IND CO LTD

Ozone catalyst as well as preparation method and application thereof in algae removal

The invention discloses an ozone catalyst and a preparation method and application thereof, Ni (NO3) 26H2O and Al (NO3) 29H2O are used as raw materials, and NiAl-LDH is prepared through a coprecipitation method; the preparation method comprises the following steps: preparing NiAl-LDH, reacting NiAl-LDH, AgNO3 and a Na2HPO4 solution to prepare Ag3PO4, and finally compounding NiAl-LDH and Ag3PO4 to prepare the ozone catalyst Ag3PO4 / NiAl-LDH composite material. The Ag3PO4 / NiAl-LDH composite material is used as an ozone catalyst to be applied to algae removal through combination of catalytic ozonation and a quorum sensing inhibitor, so that cell walls and internal structures of algae are more efficiently destroyed, and the algae removal effect is improved.
Owner:FUJIAN UNIV OF TECH

High-purity quartz sand pickling equipment

The utility model relates to the technical field of quartz sand processing, in particular to high-purity quartz sand pickling equipment which adopts the technical scheme that the high-purity quartz sand pickling equipment comprises a pickling box body, a first motor is mounted at the upper end of the pickling box body, a rotating shaft is mounted at the lower end of the first motor, a plurality of groups of long rods are mounted at the lower end of the rotating shaft, and stirring blades are mounted on the long rods; a heating plate is installed on one side in the pickling box body, a power source is installed on the side, close to the heating plate, of the outer portion of the pickling box body, and the power source is electrically connected with the heating plate. The stirring device is arranged in an existing pickling box, the pickling efficiency of quartz sand is improved by stirring an internal pickling solution, the whole pickling box is driven by an external support, overturning at a certain frequency can be achieved, after a reaction is carried out for a period of time, the pickling box body is driven by the second motor to be overturned, and the pickling efficiency is improved. And the quartz sand can be subjected to more thorough acid pickling treatment.
Owner:HAINAN HAIKONG XIAOHUI MINING CO LTD

Preparation method and application of algicide for synchronously removing water bloom algae cells and algal toxin

The invention belongs to the technical field of chemical agents, and provides a preparation method and application of an algicide for synchronously removing water bloom algae cells and algal toxins, the algicide is composed of calcium hypochlorite and natural clay, and the mass ratio of calcium hypochlorite to clay is 1: 1-5; the natural clay is at least one of bentonite, kaolin or diatomite; natural clay is used as a flocculating agent to prepare the algaecide, the algaecide is basically free of pollution to the ecological environment of a water body, calcium hypochlorite breaks the surface charge balance of algae cells by damaging the algae cells, rapid flocculation and sedimentation of the algae cells under the action of clay are facilitated, the removal rate reaches up to 80% or above, and the flocculation and sedimentation efficiency of the natural clay on the algae cells is far higher than the flocculation and sedimentation efficiency of the natural clay on the algae cells; after the algaecide is used for treatment, algaecide cells are broken, algaecide toxins in the cells are released, but calcium hypochlorite can quickly oxidize the toxins, so that the algaecide can synchronously remove algaecide toxins in water while removing water bloom algaecide cells, and the removal rate is up to 90% or above.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Manganese-based catalyst as well as preparation method and application thereof

The invention belongs to the field of catalyst material preparation, and particularly relates to a manganese-based catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dispersing a manganese-based carrier and an acidic solution in water, then transferring the solution into a reaction kettle for hydrothermal reaction, cooling and separating after the reaction is finished, and drying to obtain an acid-modified manganese-based carrier; under the stirring condition, transition metal salt is dissolved in water, the acid-modified manganese-based carrier is added, and a solid is obtained after filtering and drying; and finally, calcining the obtained solid to obtain the manganese-based catalyst. In a humid environment, the manganese-based catalyst shows higher chlorobenzene conversion rate, ozone conversion rate and COx selectivity than traditional catalysts, and has good long-term stability.
Owner:HUAZHONG NORMAL UNIV +1

Hydroxyl composite water fuel and preparation method thereof

The invention relates to hydroxyl composite water fuel and a preparation method thereof, and relates to the technical field of fuel. The hydroxyl composite water fuel is prepared from the following raw materials: hydroxyl water, glycerol, Tween 80, diethylene glycol monobutyl ether, lignin and ethylene glycol. When the hydroxyl composite water fuel is prepared, the method comprises the following steps: (1) adding hydroxyl water into wood essence, uniformly stirring, standing and emulsifying to obtain a mixture A; (2) stirring and mixing glycerol, Tween 80 and diethylene glycol monobutyl ether, standing and emulsifying to obtain a mixture B; (3) adding the mixture A into the mixture B, stirring and mixing, and standing and emulsifying to obtain a mixture C; and (4) adding ethylene glycol into the mixture C, stirring, standing and emulsifying to obtain the hydroxyl composite water fuel. The hydroxyl composite water fuel prepared by the method is high in flash point, the calorific value can reach 5000 kal, the hydroxyl composite water fuel cannot be ignited by open fire in a liquid state, and safe use of the fuel can be guaranteed.
Owner:JIANGXI TENGDA NEW ENERGY DEVELOPMENT CO LTD

Preparation method of dication positive electrode material

The invention provides a preparation method of a dication positive electrode material. The preparation method comprises the following steps: preparing a conductive polymer monomer and a heteropoly acid aqueous solution; carrying out electrolysis on the heteropolyacid aqueous solution; after electrolysis, Li2CO3 and Na2CO3 are added, and after the reaction is completed, separated-out heteropoly blue lithium sodium crystals are separated; adding the crystals into a conductive polymer monomer aqueous solution to obtain a mixture; dropwise adding an excessive strong oxidizing acid dilute solution into the mixture, and reacting at 140-180 DEG C for 16-24 hours; and repeatedly washing the separated solid substance after the hydrothermal reaction with deionized water, and drying to obtain the dicationic positive electrode material. The form of the heteropoly blue lithium sodium still keeps the skeleton structure of heteropoly acid radical anions, and the skeleton structure can ensure that lithium ions and sodium ions can be transmitted in the skeleton of the heteropoly blue lithium sodium; and the conductive polymer prepared by the method is of a porous structure, and sodium ions with large radius can be transmitted through pores of the conductive polymer, so that the ionic conductivity of the heteropoly blue lithium sodium can be improved to a certain extent.
Owner:DONGFANG ELECTRIC CHENGDU INTELLIGENT TECH CO LTD

Preparation method of medium-thin plate AZ31B magnesium alloy high-toughness welded joint

The invention provides a preparation method of a medium-thin plate AZ31B magnesium alloy high-toughness welding joint, and relates to the technical field of welding. The welding groove is in a Y shape, the groove angle of a welding joint is 60 degrees, the truncated edge size is 1.5 mm, the root gap is 0.5-1 mm, oil stain and oxidation film cleaning is carried out before welding, then assembling is carried out, single-face single-pass welding or single-face double-layer double-pass welding is carried out on an AZ31B test plate, and artificial aging treatment is carried out after welding. The preparation method of the medium-thin plate AZ31B magnesium alloy high-toughness welding joint overcomes the defects in the prior art, does not need a liner or back argon protection, is simple to operate, low in manufacturing cost and high in production efficiency, and can be suitable for welding production and manufacturing of various product structural forms.
Owner:HUNAN LIANCHENG TRACK EQUIP CO LTD

Application of iron-doped carbon nitride rich in nitrogen vacancy

The invention relates to application of iron-doped carbon nitride rich in nitrogen vacancies, in particular to application of the iron-doped carbon nitride rich in the nitrogen vacancies in degradation of active pharmaceutical compounds based on a degradation system of UV-LED / NaClO and / or UV-LED / NH2Cl. The removal rates of the UV-LED / NaClO / Fe-g-C3N4-Nv degradation system and the UV-LED / NH2Cl / Fe-g-C3N4-Nv degradation system on carbamazepine are as high as 98.3% and 67.2% respectively, the oxidation capacity of g-C3N4 is enhanced through iron doping, a new intermediate energy level is formed through introduction of nitrogen vacancy, the effect of an electron capturer is achieved, a new electron transmission channel is formed under the combined action of iron doping and nitrogen vacancy, and the degradation efficiency of carbamazepine is improved. The migration rate of electrons and the separation efficiency of photon-generated carriers are obviously improved; meanwhile, the Fe-g-C3N4-Nv achieves efficient activation of NaClO and NH2Cl through O2.-and hvb + under UV-LED irradiation, the yield of HO., RCS and RNS in a degradation system is increased, the adaptability to water quality fluctuation is high, and stable degradation of pharmaceutical active compounds can be achieved.
Owner:ZHEJIANG UNIV OF TECH

Metal ion doped manganese-based composite catalyst as well as preparation method and application thereof

The invention discloses a metal ion doped manganese-based composite catalyst as well as a preparation method and application thereof. The catalyst is metal ion doped MnO2 in an epsilon crystal form; wherein the metal ion is any one of nickel, cobalt, potassium, sodium and lithium; and in the catalyst, the molar ratio of the manganese element to the metal ions is (1-3): 1. The obtained manganese-based composite catalyst has excellent long-term stability, is not easy to inactivate, shows excellent performance in various severe environments, and is very suitable for ozonolysis in the atmospheric environment.
Owner:JIANGSU UNIV OF TECH

System for treating sludge drying flue gas based on hydrodynamic cavitation

The utility model relates to a system for treating sludge drying flue gas based on hydrodynamic cavitation. The system comprises cyclone dust removal equipment, a centrifugal fan, spray washing equipment, hydrodynamic cavitation equipment, a gas-liquid separator and an activated carbon adsorber which are connected in sequence, one end, far away from the spraying and washing equipment, of the liquid discharging pipeline is connected with the water tank, an inlet of the filtering equipment is provided with a first pipeline connected with the water tank, an outlet of the filtering equipment is provided with a second pipeline connected with the reaction liquid storage tank, and an outlet of the reaction liquid storage tank is provided with a third pipeline; a delivery pump is arranged at one end, far away from the reaction liquid storage tank, of the third pipeline, a fourth pipeline connected with the hydrodynamic cavitation equipment is arranged at an outlet of the delivery pump, and the ozone generator is connected with the fourth pipeline through a fifth pipeline. The ozone is coupled in the hydrodynamic cavitation section, so that the mass transfer effect of the ozone can be enhanced, the oxidation effect of the ozone is further enhanced, and the effects of short reaction period, high stability, low cost and high efficiency are achieved.
Owner:NANJING BALANCE ENVIRONMENTAL TECH CO LTD

Method for electrochemical oxidation of unsymmetrical dimethylhydrazine wastewater

The invention provides a method for electrochemical oxidation of unsymmetrical dimethylhydrazine wastewater. The method comprises the steps that 1, unsymmetrical dimethylhydrazine wastewater to be treated is placed in a middle water tank, an electrolytic bath is arranged in the water tank, and wastewater containing unsymmetrical dimethylhydrazine is introduced into the electrolytic bath; the treatment process comprises a power supply, a reactor, an intermediate water tank and a circulating pump, the reactor is composed of an anode, a cathode, a flow channel, a container and the like, a water pump and the power supply are started, and unsymmetrical dimethylhydrazine wastewater is pressed into the reactor through the water pump; according to the method, persulfate is utilized to cooperate with electrochemical oxidation of unsymmetrical dimethylhydrazine wastewater, only electric energy and persulfate need to be input into the system, the electric energy can activate the persulfate, the activated sulfate free radicals can strengthen the effect of electrochemical oxidation of unsymmetrical dimethylhydrazine, no extra catalyst needs to be added, operation is flexible, starting and stopping are convenient, the oxidation capacity is high, and the method is suitable for industrial production. The treatment period is short.
Owner:NO 63921 UNIT OF PLA

Conjugated polymer film with electrical property and tensile stability simultaneously improved, preparation method and application

The invention discloses a conjugated polymer film with electrical properties and tensile stability simultaneously improved, and a preparation method and application thereof, and belongs to the technical field of flexible electronic materials. The preparation method comprises the following steps: placing the conjugated polymer film in a solution formed by mixing an electrolyte and a dopant, and soaking for 30-60 seconds to complete ion exchange doping, thereby obtaining the conjugated polymer film with various carrier transport channels. The strategy of increasing the types of carrier transmission channels is adopted, and two main transmission channels of a crystal phase and an accumulation region are formed in the conjugated polymer film through an ion exchange doping method, so that the conjugated polymer film can maintain the electrical property at a high proportion under a stretching external field, and the electrical property of the conjugated polymer film is improved under the same stretching strain. And the tensile stability of the conductivity is far higher than that of a conjugated polymer film which only takes a crystal phase or an accumulation region as a carrier transmission channel.
Owner:BEIJING NORMAL UNIVERSITY

A visible light photocatalyst for in-situ synthesis of hydrogen peroxide and its preparation method and application

The invention discloses a visible light photocatalyst for in-situ synthesis of hydrogen peroxide and a preparation method and application thereof, belonging to the technical field of photocatalytic material preparation; the invention adopts a wet impregnation method to impregnate a covalent organic polymer with chloroauric acid so that the chloroauric acid is evenly distributed on the inner surface of the covalent organic polymer, thereby assisting sodium borohydride reduction to obtain gold nanoparticles and loading them on the covalent organic polymer to synthesize a gold-loaded covalent organic polymer (Au / COFs) visible light photocatalyst; the photocatalyst can significantly improve the absorption capacity of visible light, has good visible light photoresponse and excellent photocatalytic performance, and can efficiently reduce oxygen to synthesize hydrogen peroxide in situ under visible light; the photocatalyst can be applied to the environmental field of sustainable development and the field of clean production, sterilizes water bodies by combining with advanced oxidation technology, and the preparation method is simple, the synthesis efficiency is high, meets the actual production needs, and has high practical value and good environmental significance.
Owner:FUZHOU UNIV

Desulfurization, denitration and dust removal process for low-sulfur flue gas

The invention discloses a desulfurization, denitrification and dust removal process for low-sulfur flue gas, belongs to the technical field of desulfurization and denitrification, and aims to solve the problems that gas molecules are not easy to diffuse and adsorb on particle surfaces in a gas desulfurization and denitrification project by using a combined desulfurization and denitrification adsorbent in the prior art; the sulfur capacity, the nitrate capacity, the specific surface area and the desulfurization and denitrification efficiency of combined desulfurization and denitrification need to be further improved. The method comprises the following steps that after mechanical dust in low-sulfur flue gas is filtered through a dust remover, the temperature is reduced to the room temperature, and pretreated waste gas is obtained. Porous high-iron ash is modified through an alkali magnetic method, activated carbon is prepared through activation and modification through an alkali dissolution method and serves as a base material, an adhesive is added, granulation is conducted, and the pretreated waste gas is obtained. The sulfur capacity, the nitrate capacity and the specific surface area of the combined desulfurization and denitrification adsorbent are improved, the desulfurization and denitrification efficiency is improved, and emission of pollutants in sintering flue gas is reduced.
Owner:LINHUAN COKING

Organic waste gas treatment device

The utility model relates to an organic waste gas treatment device which comprises a reaction tower, a circulating water tank, a waste gas distributor, a micro-electrolysis structure layer, a micro-nano bubble releaser, a demisting layer and a peroxymonosulfate box, and the circulating water tank, the waste gas distributor, the micro-electrolysis structure layer, the micro-nano bubble releaser and the demisting layer are arranged in the reaction tower from bottom to top. The peroxymonosulfate tank is communicated with the circulating water tank through a doser, the micro-nano bubble releaser is connected with the circulating water tank through a high-pressure pump, a purified waste gas outlet is formed in the upper end of the reaction tower, and a waste gas inlet is formed in the side wall of the waste gas distributor. According to the device, the micro-nano bubbles are coupled with the peroxymonosulphide in cooperation with micro-electrolysis, so that the device has relatively strong pertinence and complementarity, the treatment effect is far better than that of single micro-nano bubbles or peroxymonosulphide, on one hand, the removal rate of pollutants is improved, stable and standard emission of the pollutants is realized, and on the other hand, the cost can be saved.
Owner:GUANGXI VOCATIONAL & TECH COLLEGE OF LOGISTICS

Application of carbon nanodots in the preparation of photocatalytic drugs

The present invention discloses an application of carbon nanodots in the preparation of photocatalytic drugs. The surface of the carbon nanodots has electron-withdrawing groups, which can capture excited electrons generated by the carbon nanodots absorbing light and undergo a reduction reaction, thereby extending the life of the generated holes and achieving strong oxidation ability. Under light, the carbon nanodots can effectively kill cells and antibiotic-resistant bacteria in an aqueous solution by oxidizing hydroxide ions in water to generate hydroxyl radicals, and have good applications in tumor photocatalytic treatment and photocatalytic sterilization. In addition, the carbon nanodots have good biocompatibility, may be metal-free, and have high biosafety.
Owner:UNIV OF MACAU

A method for treating furfural wastewater using ozone-Fenton coupling

The present invention is a method for treating furfural wastewater by using ozone-Fenton coupling. The method comprises the following steps: (1) adding sulfuric acid or sodium hydroxide to the furfural wastewater to adjust its pH value to 3; (2) adding Fenton catalyst ferrous salt solid and oxidant hydrogen peroxide to the solution obtained in step (1) and introducing ozone for reaction; (3) adding sodium hydroxide solution to the solution obtained in step (2) to adjust the pH value to 10, and then discharging after forming flocculation precipitation. The method has significantly improved the ability to degrade organic matter, and only requires a single reaction device to complete the process, and the process is simple, economical, and reliable in operation.
Owner:HEBEI UNIV OF TECH

A blowtorch, polishing device and method for polishing device surface

The present application relates to a blowtorch for polishing the surface of a device, which includes a polishing lamp head, the polishing lamp head has a central feed hole and an annular flame hole surrounding the outer side of the central feed hole; the central feed hole is used to introduce a mixed gas of fluoride and oxygen; the annular flame hole includes a first layer of flame holes and a second layer of flame holes; the first layer of flame holes includes a first layer of oxygen holes and a first layer of hydrogen holes; the second layer of flame holes includes a second layer of oxygen holes and a second layer of hydrogen holes. Fluoride is introduced into the central feed hole. Fluoride has extremely strong oxidizing properties and can react with impurities on the surface of the device, such as reacting with metal impurities to generate gaseous fluoride and be carried away by the airflow. Under high temperature, fluoride will also decompose fluorine gas, and silicon atoms on the surface of the device react with fluorine gas to generate volatile SiF4, and a very thin layer of the surface of the optical fiber preform is etched away, and at the same time, impurities and defects on the surface are also taken away, thereby eliminating microscopic defects on the surface of the device.
Owner:WUHAN FIBERHOME RUITUO TECH CO LTD +1

Preparation method and application of bimetallic loaded coal gasification ash catalyst

The invention discloses a preparation method and application of a bimetallic loaded coal gasification ash catalyst, and the preparation method comprises the following steps: S1, grinding, screening, washing and drying ash to obtain an ash carrier; s2, adding metal salt into water, and stirring to obtain a precursor solution; s3, adding the ash carrier into the precursor solution, and stirring to obtain a mixed solution; and S4, adding hydroxide into the mixed solution, carrying out hydrothermal reaction, washing, drying, grinding and calcining to obtain the supported coal gasification ash catalyst. Cheap ash is taken as a carrier, waste resources are reasonably utilized, not only is environmental pollution reduced, but also recycling of the resources is realized, uniform distribution and firm combination of metal ions on the surface of the ash are effectively promoted by adopting a hydrothermal method, the bimetallic loaded coal gasification ash catalyst is synthesized, and the bimetallic loaded coal gasification ash catalyst can be used for treating COD (Chemical Oxygen Demand) in coal chemical industry wastewater. The method has the advantages of high removal rate, stability, application feasibility and the like, and has excellent industrial application potential.
Owner:YILI NORMAL UNIV

A fluorine-containing dihydronaphthone derivative, a preparation method and application thereof

The present application relates to a kind of fluorine-containing dihydronaphthalenone derivative and its preparation method and application, the fluorine-containing dihydronaphthalenone derivative obtained by visible light induced phosphine catalysis difluoroacetophenone derivative and the radical addition cyclization reaction of a variety of olefins in series compared with prior art, the preparation method of the present application has the advantages of high efficiency, short reaction time, high yield, mild condition etc., its structural motif is important in pharmaceutical and agrochemical products;The synthetic method for preparing fluorine-containing dihydronaphthalenone and its derivative of the present application is completely new, and the fluorine-containing dihydronaphthalenone compound synthesized is used in various organic synthesis reactions.
Owner:SHANGHAI INST OF TECH

Liquid cleaning agent based on hydrogen peroxide and preparation method thereof

The invention relates to the field of medical instrument cleaning agents, in particular to a hydrogen peroxide-based liquid cleaning agent and a preparation method thereof, and the liquid cleaning agent comprises an agent A and an agent B; the mass ratio of the agent A to the agent B is (60-70): (30-40); the double-chain quaternary ammonium salt and PCA zinc are introduced into the agent A, contact between hydrogen peroxide molecules and pathogens can be accelerated, the pathogens can be killed in a short time, 4-formylphenylboronic acid in the agent B can effectively inhibit protease activity and prevent protease hydrolysis during storage, enzyme is protected, and the agent B has the advantages of being safe and reliable. Hydrogen peroxide in the compound agent A can enable enzyme activity to be recovered slowly in the using process so that enzyme can play a role to the maximum extent, the added compound stabilizer and glycerol have a stabilizing effect on protease and prevent enzyme activity from being reduced, and the compound corrosion inhibitor and the corrosion inhibitor can effectively prevent medical instruments from being corroded by the cleaning agent. Therefore, the method has a wide application prospect.
Owner:SHANDONG MEIDI RUIFEN MEDICAL DEVICES CO LTD

Preparation method and application of magnetic rectorite / water bloom algae mud / river and lake bottom mud composite biochar material

The invention discloses a preparation method and application of a magnetic rectorite / water bloom algae mud / river and lake bottom mud composite biochar material. The preparation method comprises the following steps: mixing pretreated rectorite, water bloom algae mud and river and lake bottom mud in proportion to obtain powder, soaking the powder in an iron modifier solution, fully stirring, carrying out suction filtration, drying, placing the mixture in a tubular furnace, carbonizing under the protection of argon, and cooling to room temperature, so as to obtain the rectorite / water bloom algae mud / river and lake bottom mud composite material. The magnetic rectorite / water bloom algae mud / river and lake bottom mud composite biochar material is obtained. The composite biochar material is prepared from natural clay mineral rectorite, lake water bloom algae mud and river and lake bottom mud, is wide in source and low in cost, has a good adsorption effect on different types of pollutants such as tetracycline (TC), lead ions (Pb < 2 + >) and phosphorus (P) in an aqueous solution, has a practical application prospect, and is suitable for industrial production. And meanwhile, a new strategy is provided for resource utilization of solid wastes.
Owner:WUHAN UNIV +1

Preparation process of long-acting composite disinfectant for livestock farm

InactiveCN119522937AReduce the risk of drug resistancequick killBiocideAnimal repellantsBiotechnologyCalcium biphosphate
The invention provides a preparation process of a long-acting composite disinfectant for a livestock farm, and belongs to the technical field of disinfectant preparation. The preparation process comprises the following steps: preparing dihydrodemethyleneberberine; preparation of titanium dioxide-dihydrodemethyleneberberine at calcium phosphate; preparing a composite antibacterial nano emulsion; preparing an organosilicon quaternary ammonium salt antibacterial agent; and preparing the composite disinfectant. The composite disinfectant prepared by compounding the titanium dioxide-dihydrodemethyleneberberine calcium phosphate, the composite antibacterial nano-emulsion and the organosilicon quaternary ammonium salt antibacterial agent does not contain mercury and contains arsenic; therefore, the composite disinfectant overcomes the defect of short-term effect, reduces the risk of drug resistance, and also gives consideration to environmental protection and biological safety.
Owner:SHANDONG ZHAOGUAN PHARM CO LTD

Sewage treatment equipment and sewage treatment method

The present invention discloses a sewage treatment device and a sewage treatment method, the device comprises a box, a positive electrode insulating plate is arranged at the opening of the box, the positive electrode insulating plate is covered on the box to form a reaction chamber, a discharge device is arranged in the reaction chamber, the discharge device comprises a positive electrode sheet, a plurality of positive electrode posts, a steel wire mesh, and a negative electrode sheet from top to bottom, and a negative electrode insulating plate is arranged at the bottom of the discharge device. The sewage treatment method of the present invention adopts the above-mentioned sewage treatment equipment to treat sewage. The present invention is simple and efficient, has stronger oxidation capacity, and has a wider range of applications.
Owner:SHENZHEN ZHONGKE LIANGNENG TECH DEV CO LTD

A quaternary ammonium salt wastewater treatment process

The invention provides a quaternary ammonium salt wastewater treatment process, and relates to the field of sewage treatment. The invention uses fluorinated iron and zirconium iron complexes as iron-based composite catalysts. In the micro-electrolytic oxidation process, hydrogen peroxide can be quickly decomposed to generate more hydroxyl radicals under neutral conditions, which has a good chain breaking effect on macromolecular organic matter. At the same time, tetramethylammonium bromide is selected to modify POSS in a coagulation and precipitation process, which has a large number of silanol groups and hydrogen bonds distributed in its pores and on its surface, has a strong adsorption capacity, and realizes efficient treatment of quaternary ammonium salt wastewater.
Owner:SHANDONG TAIYUAN CHEM CO LTD

Microorganism-electro-Fenton device for treating sewage pollutants

The invention provides a microorganism-electro-Fenton device for treating sewage pollutants, the microorganism-electro-Fenton device comprises an anode chamber, a cathode chamber and a cation exchange membrane, the anode chamber contains electrogenesis bacteria liquid of electrogenesis bacteria; an anode carbon rod is inserted into the anode chamber and is filled with an anode graphite carbon felt; a cathode carbon rod is inserted into the cathode chamber, and a cathode graphite carbon felt is arranged on the cathode carbon rod; the cation exchange membrane is arranged between the anode chamber and the cathode chamber, and the cation exchange membrane is a proton exchange membrane; the conventional pollutants in the sewage are decomposed by utilizing electrogenesis bacteria in an anode solution in the anode chamber, chemical energy is converted into electric energy, and electrons and protons are generated; electrons reach the cathode through an external circuit, and protons are transmitted to the cathode chamber through the cation exchange membrane; aeration is conducted in the cathode chamber, oxygen dissolved in the cathode chamber is combined with electrons and protons to generate H2O2, then the H2O2 and Fe < 2 + > are subjected to a Fenton reaction to generate hydroxyl free radicals, and the hydroxyl free radicals mineralize novel pollutants in a cathode solution.
Owner:GUIZHOU UNIV