365 results about "Phase reaction" patented technology

The invention relates to the technical field of electrochemical carbon dioxide reduction reaction catalysts, and discloses a preparation method and application of a mixed ionomer modified cuprous oxide catalyst, a hydrophobic ionomer and a proton exchange ionomer are used for performing surface modification on cuprous oxide powder, an effective hydrophobic structure is constructed on a Cu2O active site in a physical coating form, and the cuprous oxide modified cuprous oxide catalyst is prepared. A stable and controllable hydrophobic gas-liquid-solid three-phase reaction micro-interface is formed, so that the problems of low C-2 Faraday efficiency, poor selectivity, serious competitive hydrogen evolution reaction, carbonate deposition and the like in the existing process of preparing a C-2 product by electrocatalytic carbon dioxide reduction are solved, and the industrial current density (gt; and the method has the advantages of simple process flow, low price, high product selectivity and the like.

The invention discloses a preparation method of a nanoscale lithium aluminum titanium phosphate solid electrolyte, which comprises the following steps: mixing a phosphorus source and a titanium source by using a liquid phase method to react, obtaining a precursor 1 after the reaction is completed under the conditions that the reaction temperature is 25-180 DEG C and the pH value of a reaction system is 0-2, then adding a lithium source and an aluminum source, and preparing a precursor 2 by using a liquid phase reaction, and finally, washing and drying, and carrying out heat treatment to prepare the nano-scale lithium aluminum titanium phosphate solid electrolyte. According to the method, the reaction temperature and the pH value of a reaction system in the process of preparing the precursor 1 are controlled, so that the particle size level of the product is controlled, the introduction of a rear-end crushing process is avoided, the technological process is shortened, and the production period is shortened.

The present application relates to a multiphase reactor. The multiphase reactor comprises: a reactor housing in which a reaction cavity is formed, wherein the reactor housing is provided with a second material inlet pipe and first material inlet pipes communicated with the reaction cavity, and the first material inlet pipes are used for conveying a first material to the reaction cavity; a gas distributor located in the reaction cavity, wherein the second material inlet pipe is communicated with the gas distributor, and a second material conveyed by the second material inlet pipe is conveyed to the reaction cavity by means of the gas distributor; and flow guide cylinders located in the reaction cavity, wherein a plurality of ventilation parts are arranged on each flow guide cylinder in the circumferential direction of the reactor housing, and the flow guide cylinders are used for axial drainage and radial cutting in the reaction cavity. The present application solves the technical problems that the reaction efficiency is affected and the material consumption is increased due to uneven distribution of a temperature field and a reaction field in multiphase reactors.

The invention belongs to the technical field of electrocatalytic materials, and relates to a two-phase bimetallic carbide heterostructure electrocatalyst and a preparation method and application thereof. The composition of the two-phase bimetallic carbide heterostructure electrocatalyst is WMoC2 / WVC2, and preferably, the mass percent of the WMoC2 is 40%-80%, and the mass percent of the WVC2 is 20%-60%. According to the invention, the bimetallic heterostructure WMoC2 / WVC2 electro-catalytic hydrogen evolution material is prepared through a step-by-step hydrothermal method and a solid-phase reaction method. The preparation method is green and pollution-free, the raw material cost is low, and the electrocatalytic activity in an alkaline environment is good.

The invention relates to the technical field of gas separation membranes, in particular to a gas separation membrane based on a covalent organic framework and a preparation method and application thereof, and the preparation method comprises the following steps: preparing a mixed solution containing a polyamine monomer, a polyaldehyde monomer and an organic solvent, and reacting to obtain a COF material; the preparation method comprises the following steps: preparing an amine micromolecule aqueous solution, adding a COF material, and mixing until adsorption equilibrium to obtain NH2-COF; preparing a water-phase reaction solution containing NH2-COF and an organic-phase reaction solution containing multi-acyl chloride; the water-phase reaction liquid is in contact with the surface of the support membrane, and is in contact with the organic-phase reaction liquid after excess liquid is removed, and a nascent state COF membrane is obtained through reaction; and carrying out heat treatment on the nascent state COF membrane at 30-90 DEG C for 1-30 minutes to obtain the COF gas separation membrane. The gas separation membrane prepared by the invention can realize efficient separation of carbon dioxide / nitrogen and carbon dioxide / methane, and solves the problem of low selectivity of a COF membrane in separation of carbon dioxide / nitrogen and carbon dioxide / methane in the prior art.

The invention relates to the field of catalysts, and discloses a hydrogenation catalyst, a preparation method and application thereof, and a method for preparing alpha-methylbenzyl alcohol, the hydrogenation catalyst comprises a hydrogenation active component and a SiO2 carrier; the surface of the catalyst is modified by siloxane groups. The hydrogenation catalyst has the characteristics of high low-temperature hydrogenation activity and long service life. The hydrogenation catalyst is used in a liquid phase hydrogenation reaction and has high catalytic activity, so that a low-temperature liquid phase reaction can be better carried out, for example, the hydrogenation catalyst is used in preparation of alpha-methylbenzyl alcohol, the raw material acetophenone can obtain a high conversion rate, the alpha-methylbenzyl alcohol has high selectivity, and meanwhile, the hydrogenation catalyst is long in service life.

The invention discloses a jet type micro-droplet generation device and a micro-droplet generation method thereof, and belongs to the technical field of liquid-liquid heterogeneous / homogeneous reaction devices. The device comprises an injection pipe, the injection pipe is used for conveying a first liquid phase, the interior of the injection pipe is of a cavity structure, the injection pipe comprises a feeding section, a mixing section, a diffusion section and a feeding pipe, the feeding section, the mixing section and the diffusion section are sequentially communicated and coaxially arranged, the feeding pipe is used for conveying a second liquid phase, and the feeding pipe penetrates through the side wall of the feeding section and extends into an inner cavity of the injection pipe; a discharging opening of the feeding pipe is formed in the mixing section, and an annular flowing space is formed by the outer wall of the feeding pipe and the inner wall of the mixing section. The feeding pipe extends into the mixing section to form an annular flowing space, and a second liquid phase is dispersed into small liquid drops by fully utilizing the annular space and a strong shear flow field in the mixing section. The method is suitable for a liquid-liquid heterogeneous / homogeneous system, including a liquid-liquid heterogeneous / homogeneous reaction crystallization system generated by solid particles.

The invention discloses an experimental system and method for accelerating and promoting a gas-liquid-solid three-phase reaction in a multi-stage manner, and relates to the technical field of reaction equipment and carbon emission reduction. The experiment system comprises: a reaction kettle provided with a visual window and an atomization device mounting groove; the floating type piezoelectric ceramic atomization device is embedded in the atomization device mounting groove; the gas injection device comprises a gas hole distribution pipe and a gas injection pump connected with the gas hole distribution pipe; uniformly distributed micropores are formed in the pore distribution pipe; the magnetic stirring device comprises a magnetic driving base, a rotating speed controller and a magnetic stirrer arranged in the reaction kettle; the magnetic stirrer is arranged above the air hole distribution pipe; the bracket net is arranged on one side, deviating from the air hole distribution pipe, of the magnetic stirrer; and the temperature control device comprises a constant-temperature bath and a temperature controller for controlling the temperature of the constant-temperature bath. The experimental system is compact in structural design, modularized, simple and convenient to operate, capable of efficiently accelerating the gas-liquid-solid three-phase reaction and suitable for various experimental studies.

The invention discloses high-sintering-activity spherical silver powder and a preparation method and application thereof. The preparation method comprises the steps that under the condition of continuous stirring, a reducing agent, a silver-containing oxidizing agent and a dispersing agent are mixed, then a first auxiliary agent is added, a liquid-phase reduction reaction is conducted, and a silver powder initial product is obtained; and mixing the silver powder primary product, a modified dispersant and a second auxiliary agent, and modifying the silver powder primary product to prepare the high-sintering-activity spherical silver powder, the particle size distribution D50 of the high-sintering-activity spherical silver powder is 1.4-1.8 microns, the tap density is not smaller than 5.5 g / cm < 3 >, and the specific surface area is not smaller than 0.36 m < 2 > / g. The preparation method is simple in process, the high-sintering-activity spherical silver powder can be stably prepared, and the preparation method is widely applied to the fields of solar cells and electronic and electric appliances.

A method for synthesizing a high-purity Nε-lauroyl lysine. The method comprises: stirring raw materials including lysine and / or a lysine salt, an alkaline compound, water, low-carbon alcohol and a water-insoluble solvent until uniform to form a two-phase microemulsion; adding, in a dropwise manner, lauric acid and / or lauroyl halide to the two-phase microemulsion, and stirring same for a reaction; and after the reaction is completed, subjecting same to acid neutralization and precipitation, so as to obtain Nε-lauroyl lysine. By constructing a two-phase reaction system, the method ingeniously solves the problem regarding the reaction selectivity of α-amino and ε-amino, obtains a high-purity Nε-lauroyl lysine with good yield, and is mild in terms of reaction conditions, easy in terms of the separation and purification of the product, and suitable for industrial production.

The invention relates to a method for preparing caprolactam, which is characterized in that: a # imgabs0 # acidic compound with temperature control phase transfer catalysis characteristics is adopted as a catalyst to catalyze cyclohexanone-oxime rearrangement reaction to prepare caprolactam, and the catalyst is recycled and reused; the conditions of the rearrangement reaction are as follows: the molar ratio of cyclohexanone-oxime to the catalyst is (10: 1)-(200: 1), the mass ratio of cyclohexanone-oxime to the organic solvent is (1: 1)-(1: 5), the reaction temperature is 40-150 DEG C, and the reaction time is 1-8 hours. The method has the characteristics that the # imgabs 1 # acidic compound with the temperature control phase transfer catalysis characteristic is used as a catalyst to catalyze cyclohexanone-oxime rearrangement reaction to prepare caprolactam, and has the characteristics of high-temperature homogeneous reaction-low-temperature two-phase separation; the reaction conditions are mild, the catalyst has good catalytic activity, the product yield is high, and the solvent and the catalyst are easy to separate and can be used.

The invention discloses a synthesis method of gamma-type manganese dioxide with high specific surface area, and belongs to the field of chemical synthesis, the gamma-type manganese dioxide is synthesized through mild liquid phase reaction, has unique microspherical morphology, average pore size of 8.49 nm and specific surface area up to 168.70 m / g, and obviously improves charge storage capacity, catalytic efficiency and ion diffusion rate. The synthesis method disclosed by the invention is simple in process and low in cost, and the obtained material has high specific surface area, a mesoporous structure and excellent surface activity.

The utility model discloses a gas, liquid and solid three-phase reactor for ammonia distillation crystallization, the gas, liquid and solid three-phase reactor is of a tower structure, at least one horizontally arranged transverse baffle is arranged in the reactor at intervals from bottom to top so as to divide the reactor into a plurality of reaction chambers, the transverse baffle is provided with a shaft hole, and the shaft hole is communicated with the transverse baffle. Each reaction chamber is provided with a vertical longitudinal baffle close to the inner wall, and the stirring shaft of each reaction chamber is provided with at least one layer of stirring paddle. A gas rising hole can be formed in the transverse baffle and is matched with the shaft hole, so that mass and heat transfer of gas and liquid in the reactor is more sufficient. The reactor provided by the utility model can effectively control the decomplexing crystallization process, fulfills the aims of fully recovering ammonia and controlling crystal morphology, particle size distribution, tap density and the like, and can ensure that the reaction can be continuously and stably operated for a long time.

The present invention provides a particle collision disturbance type gas lift loop reactor, the reactor comprising: a reactor body; a draft tube with a sieve plate; particles, which can be suspended inside the draft tube when the reactor is running; a gas distributor; a main liquid distributor; a gas inlet; a liquid inlet; a gas outlet; and a liquid outlet. Compared with the traditional gas lift loop reactor, due to the turbulent disturbance of particles and fluid inside the draft tube of the reactor, it helps to prevent gas phase aggregation and increase liquid phase back mixing, so that the gas and liquid phases in the reactor are fully mixed, the solubility of the gas phase in the liquid phase and the gas-liquid contact area are increased, the mass transfer rate and heat transfer rate between fluids are improved, and at the same time, the temperature distribution in the reactor is uniform, which is conducive to gas-liquid two-phase reaction or gas-liquid-solid three-phase reaction, and can be widely used in gas-liquid two-phase or gas-liquid-solid three-phase chemical reaction processes.

The invention provides a system and method for preparing carbonic ester, and the system comprises a pre-reactor which is used for the pre-reaction of carbonic ester and alcohol; the suspension type reaction rectifying tower comprises a rectifying section, a reaction section and a stripping section and is used for continuously reacting the pre-reacted material in the reaction section after rectifying the pre-reacted material through the rectifying section, and the heterogeneous solid catalyst reacts in the reaction section in a suspension manner; the suspended reactive distillation tower is provided with a gas ascending pipeline, and the gas ascending pipeline is communicated with a gas outlet in the top of the stripping section and a gas phase space in the top of the reaction section and is used for separating gas phase ascending of the stripping section. The system disclosed by the invention is simple in structure, effectively solves the problems of complex loading and unloading of a catalyst, damage of the catalyst and large discharge amount of three wastes in existing heterogeneous reactive distillation, and can be applied to industrial production; the method is especially suitable for production of chain carbonate or linear carbonate generated by esterification reaction of cyclic carbonate and alcohol.

The invention relates to the technical field of electrocatalysis, in particular to a preparation method and application of a novel bismuth nanocrystal / nitrogen-rich graphite carbon electrocatalyst, and the preparation method comprises the following steps: S1, adding urea and ammonium chloride into water, stirring, freeze-drying and grinding to obtain a chelating ligand; s2, adding bismuth citrate into the chelating ligand, and carrying out solid-phase reaction to obtain a precursor; and S3, calcining the precursor under the protection of nitrogen to obtain the bismuth nanocrystal / nitrogen-rich graphite carbon electrocatalyst. The problems that reduction and reconstruction reactions are likely to happen in the CO2 electrocatalytic reduction catalysis process, and the difficulty of active site recognition and performance regulation and control is increased can be solved.

The invention relates to a polypeptide solid-phase reaction kettle, and belongs to the technical field of polypeptide preparation equipment, the polypeptide solid-phase reaction kettle comprises a kettle body and a stirring shaft arranged in the kettle body, the side surface of the bottom of the kettle body is provided with an adapter, the stirring shaft is provided with a stirring plate, and the top of the kettle body is provided with a stirring motor for driving the stirring shaft to rotate; a scraping plate is hinged to the inner side of the kettle body, the initial position of the scraping plate is horizontal, a notch is formed in the end, facing the hinged end, of the scraping plate, the stirring shaft is located in the notch, and a first driving piece used for driving the scraping plate to rotate to be attached to the inner wall of the kettle body is arranged in the kettle body; a spraying pipe is arranged on the inner side of the kettle body and is used for conveying cleaning water to wash the inner side of the kettle body; the stirring plate is movably arranged on the stirring shaft, when the stirring plate performs stirring operation, the stirring surface of the stirring plate is parallel to the stirring shaft, when the stirring plate is cleaned, the stirring surface of the stirring plate is perpendicular to the stirring shaft, and the first driving device is used for driving the stirring plate to move. The cleaning device has the effect of improving the cleaning efficiency of the reaction kettle.

The invention relates to the technical field of sodium silicate production, and particularly discloses a method for preparing sodium silicate by dissolving fluorine-containing silicon dioxide with alkali lye, which comprises the following steps: step 1, adding fluorine-containing silicon dioxide, sodium carbonate and water into a reaction kettle with a stirrer and a heating device to obtain a mixed material; 2, fully and uniformly stirring the mixed material obtained in the step 1, heating the mixed material by using a reaction kettle, and controlling the reaction temperature and the reaction time for reaction; and 3, filtering and separating the reaction product obtained in the step 2 to obtain a sodium fluoride filter cake and a sodium silicate solution. Sodium carbonate and sodium bicarbonate are used for dissolving silicon dioxide in a liquid phase reaction to prepare sodium silicate, the process is green and environment-friendly, sodium carbonate in chemical production can be effectively utilized, energy is saved, consumption is reduced, and the environment is protected. The technical problems that in the prior art, the temperature is high in the reaction process, a large amount of heat needs to be consumed, and energy consumption is high are solved.

The invention discloses a jet type supergravity multiphase reaction device, and relates to the technical field of reaction devices. Comprising an annular reaction kettle, the top of the annular reaction kettle is provided with a gas feed port, a solid-liquid feed port and an emptying port, and the bottom of the annular reaction kettle is provided with a reaction kettle liquid outlet; the supergravity assembly is arranged in the annular reaction kettle; a first end of the jet ejector is provided with an air suction port and an ejector liquid inlet, and a second end of the jet ejector is provided with an opening and extends into the annular reaction kettle; the air suction port is connected with the top of the annular reaction kettle; a liquid outlet of the heat exchanger is connected with a liquid inlet of the ejector, and a liquid inlet of the heat exchanger is connected with a liquid outlet of the reaction kettle; the discharge hole is formed between the liquid inlet of the heat exchanger and the liquid outlet of the reaction kettle. The multi-phase reaction device can realize automatic loading and unloading of solid particles in a liquid-phase material, is high in equipment operation elasticity and high in universality, and is a green and efficient multi-phase reaction device.

The invention belongs to the technical field of fluorine chemical industry, and particularly relates to a continuous production process of heptafluoroisobutyryl fluoride. The process is carried out in a tubular reactor, the tubular reactor is divided into a first preheating section, a second reaction section and a third reaction section, a fluorinated molecular sieve catalyst is filled in the second reaction section and the third reaction section, each reaction section is respectively heated to a corresponding preset temperature, carbonyl fluoride and hexafluoropropylene which are mixed and preheated are introduced into the tubular reactor, and a fluorinated molecular sieve catalyst is introduced into the tubular reactor. Enabling the gas to sequentially flow through each section of the tubular reactor, contacting and reacting with the fluorinated molecular sieve catalyst in the second reaction section and the third reaction section, and condensing the gas discharged from the outlet end of the tubular reactor to obtain a heptafluoroisobutyryl fluoride product. According to the process, carbonyl fluoride and hexafluoropropylene are used as gas-phase reaction raw materials, and heptafluoroisobutyryl fluoride is synthesized through a one-step continuous flow rapid reaction. The reaction route is short, the reaction conversion rate and selectivity are high, and industrial large-scale production is easy to realize.

The present invention relates to the technical field of tert-butyl hydroperoxide, and discloses a tert-butyl hydroperoxide processing homogeneous reaction kettle, the tert-butyl hydroperoxide processing homogeneous reaction kettle comprises a homogeneous reaction kettle body, a material inlet and a connection port, the material inlet and the connection port are arranged at the top of the homogeneous reaction kettle body, and a mixing mechanism is arranged in the homogeneous reaction kettle body, a heating mechanism is arranged on the outer side of the homogeneous reaction kettle body, a mixing mechanism comprises a driving motor, a connecting rod, a supporting rod, a stirring plate and a guide groove, and the driving motor is mounted in the middle of the top of the homogeneous reaction kettle body. According to the homogeneous reaction kettle for processing the tert-butyl hydroperoxide, tert-butyl hydroperoxide reactant mixed liquid is stirred by the stirring plate and the guide groove, so that the mixed liquid can move upwards or downwards, the reactants of the tert-butyl hydroperoxide can be comprehensively mixed, and the reactants of the tert-butyl hydroperoxide react more thoroughly; impurities in the tert-butyl hydroperoxide are reduced, and the quality of the tert-butyl hydroperoxide is improved.

The present invention discloses a carbon-coated one-dimensional ferrous fluoride positive electrode material and its preparation method and application, comprising the following steps: A. mixing iron powder or soluble ferrous salt with fluorosilicic acid aqueous solution or fluorosilicate solution, centrifugally separating the supernatant and evaporating to obtain ferrous fluoride silicified powder; B. dissolving ferrous fluoride silicified powder and polyvinyl pyrrolidone in a deionized aqueous solution of ethanol to obtain a mixed solution; C. preparing an electrostatic spinning material by electrostatic spinning; D. placing the electrostatic spinning material in air or oxygen for pre-oxidation, and then carbonizing it in an inert atmosphere, and taking it out. The present invention, without introducing an additional fluorine source, uses liquid phase reaction to synthesize precursors, electrostatic spinning composites and high-temperature solid phase reactions to embed transition metal fluorides into conjugated polymers, and uses the nano properties, conductivity and structural toughness of one-dimensional carbon materials to improve the electrochemical activity, intrinsic conductivity and structural stability of transition metal fluorides, thereby comprehensively improving the electrochemical properties of transition metal fluorides.

The invention belongs to the technical field of online detection of aerosol-amine collaborative escape heterogeneous reaction, and particularly relates to an online detection system and method for aerosol-amine collaborative escape heterogeneous reaction. The system comprises an aerosol particle generation device and a double-flow-tube reaction device which are communicated with each other, and further comprises an ozone generation and detection device which is communicated with the double-flow-tube reaction device, the double-flow-tube reaction device comprises a first flow tube reactor, an ozone decomposition agent container and a second flow tube reactor which are sequentially connected, and air outlets of the aerosol particle generation device and the ozone generation and detection device are respectively communicated with an air inlet of the first flow tube reactor. The method can be synchronously realized by combining the tandem type double-flow-tube reaction device with APPI-HRMS, the distribution characteristics of the SOZ particle multiphase reaction product can be obtained online in real time, and the effective absorption coefficient can be accurately measured by quantifying the SOZ multiphase reaction rate.

The utility model relates to the technical field of vinyl chloride polymerization production, in particular to a safe feeding device of a solid-liquid-gas three-phase reaction kettle. The safe feeding device of the solid-liquid-gas three-phase reaction kettle comprises a reaction kettle and a pressure stabilizer, the pressure stabilizer is connected with a desulfurization tower through a deoxidation adsorption tower, the desulfurization tower is connected with the reaction kettle through a pre-heater, the reaction kettle is connected with a feeding tank, a temperature control coil pipe is arranged in the reaction kettle and connected with a refrigerating machine through a pipeline, and the refrigerating machine is connected with the deoxidation adsorption tower through a pipeline. And a pre-heating device coil pipe is arranged in the pre-heating device. According to the device, through the cooperative use of the heating sleeve, the connecting pipeline and the pre-heating device coil pipe, the waste heat of the reaction kettle is used for pre-heating a gas-phase raw material, so that the feeding temperature is ensured to reach a proper range, and the influence on the temperature in the reaction kettle due to the too low feeding temperature is avoided, thereby ensuring that a polymerization reaction can be carried out under a stable temperature condition; and the stability of product quality is improved.

The invention relates to a method for producing methylamine by a generally exothermic gas-phase reaction of methanol and ammonia as reactants in the presence of a heterogeneous catalyst at a pressure in the range of 15 to 35 bar. The reactants are evaporated in one or more heat exchangers and superheated prior to being fed to the reactor, wherein the heat exchangers in turn are heated with a stream of hotter product gas from the reactor. In addition to methylamine (monomethylamine, dimethylamine, and trimethylamine), the product gas stream contains unconverted reactants, water, and any other reaction by-products. To control the reactor inlet temperature and limit it to a temperature in the range of 350 DEG C to 410 DEG C, a suitable quenching liquid is introduced into the hot product gas stream prior to feeding the hot product gas stream to a heat exchanger for heating the reactants. Evaporation and overheating of the added quenching liquid removes the corresponding amount of energy extracted from the hot product gas stream, with the result of efficient and rapid cooling of the hot product gas stream. As a result, the temperature difference between the cold side and the hot side of the heat exchanger is small, which means less energy is transferred to the reactant stream, and thus its reactor inlet temperature can be adjusted or limited.

The invention belongs to an amide intermediate treatment device and method for hydrazine hydrate production. Comprising a concentration tank, the concentration tank is provided with a water-phase reaction liquid inlet pipeline and a catalyst inlet, the catalyst inlet is connected with a quartz sand catalyst preparation unit, an outlet of the concentration tank is connected with a concentrated material inlet of an intermediate recovery kettle, and the intermediate recovery kettle is further connected with an ammonia feeding pipeline. An ammoniation liquid outlet of the intermediate recovery kettle is connected with a separation and recovery unit, and a liquid phase outlet of the separation and recovery unit is connected with a hydrazine compound synthesis section; a steam discharge pipeline is arranged at the top of the concentration tank; the method has the advantages that moisture in the water-phase reaction liquid can be removed, ammonium formate is converted into formamide and recycled, meanwhile, metal ions are prevented from being contained in ammoniation liquid, and further, the treatment cost is reduced and continuous treatment is achieved on the basis of energy conservation and consumption reduction.

The utility model discloses an aeration structure for a gas-liquid-solid three-phase reaction kettle, which comprises a reaction kettle body, an aeration stirring mechanism and a synergistic mechanism, the aeration stirring mechanism is arranged in the reaction kettle body, the aeration stirring mechanism comprises a stirring main shaft, the two sides of the stirring main shaft are both provided with stirring fulcrum shafts, a plurality of synergistic nets are fixedly arranged on the stirring fulcrum shafts, and the synergistic nets are arranged on the stirring main shaft. A stirring protection bin is installed between the pair of stirring fulcrum shafts, a synergistic mechanism is installed on the stirring main shaft, a pair of stirring attaching plates are arranged in the stirring protection bin, the stirring main shaft penetrates through the reaction kettle body, and a stirring motor is fixedly installed on the upper side of the stirring main shaft and connected with the reaction kettle body. According to the aeration structure for the gas-liquid-solid three-phase reaction kettle, due to the arrangement of corresponding mechanisms, the stirring effect of the aeration mechanism is improved, meanwhile, the effect of transferring gas into liquid is accelerated, and the reaction efficiency of the reaction kettle is improved.

The invention discloses a novel method for preparing a coralline In2O3 nano material by a low-heat solid-phase precursor method. According to the method, indium nitrate hydrate (In (NO3) 3 * xH2O) and sodium hydroxide (NaOH) are used as raw materials, a precursor is generated through a solid-phase chemical reaction, then calcination treatment is carried out under the low-temperature condition of 300 DEG C, and the In2O3 nanosheet material formed by self-assembly of nanoparticles is obtained after washing and vacuum drying. According to the method, a solvent-free solid-phase reaction system is innovatively adopted, the limitation of an organic solvent in a traditional liquid-phase method is broken through, the contact efficiency of a reaction interface is effectively improved, and the reaction energy consumption is reduced. The preparation method has the characteristics of simple operation steps, high safety coefficient, environmental friendliness, easiness in realization of large-scale production and the like, and has certain technical enlightenment for large-scale preparation of high-end nano devices such as photoelectric catalytic materials and gas sensitive sensor elements.

The invention discloses a method for prolonging the service life of common free radicals and maintaining the chemical reaction activity of the free radicals by injecting or dissolving inert gas into a reaction system. The inert gas-free radical intermediate formed by inert gas molecules or atoms and free radicals prolongs the service life of the free radicals, and meanwhile, the high chemical activity of the free radicals in the inert gas-free radical intermediate is ensured by utilizing a full stable electronic structure of the inert gas, so that the reaction rate of multiphase and homogeneous reaction is effectively improved. According to the method disclosed by the invention, the selectivity or free radical reaction activity control of multiphase and homogeneous free radical reactions can be realized without introducing common free radical stabilizers (such as allyl, benzyl acetyl, aminomethyl and the like), and the inert gas has the characteristics of reusability and no toxicity; the method is suitable for free radical reactions requiring cyclic utilization of the stabilizer and free radical reactions requiring non-toxicity of the stabilizer.