1192 results about "Methyl group" patented technology

The invention relates to the technical field of quantum computing and molecular electronic devices, in particular to a probabilistic bit device based on polyfluoroaryl methyl free radicals and a preparation method of the probabilistic bit device. According to the probabilistic bit device, the coupling efficiency of molecules and electrodes is improved by virtue of the characteristic that the paramagnetic unpaired electron spin state of tri (polyfluoroaryl) methyl free radical molecules can be used as a random expansion physical entropy source and high electronegativity and stability formed by modification of a plurality of strong electron-withdrawing fluorine atoms in the molecules. During the operation period of the device, the spin fluctuation can efficiently regulate and control tunneling current passing through molecules, promote random conversion between output high and low current states, show excellent random binary fluctuation characteristics, and simultaneously have high sensitivity and long coherence time. Compared with the prior art, the device has remarkable advantages in the aspects of device stability, energy efficiency ratio and external field controllability. The preparation method is simple and convenient to operate, mild in reaction condition and beneficial to large-scale production.

The invention relates to the field of organic synthesis, in particular to a synthetic method of 1-(2, 6, 6-trimethyl-1, 3-cyclohexadiene-1-yl) ethanone, and particularly relates to a synthetic method of 1-(2, 6, 6-trimethyl-1, 3-cyclohexadiene-1-yl) ethanone by taking 4-acetyl-3, 5, 5-trimethylcyclohexene as a raw material and carrying out bromination and elimination steps to synthesize the 1-(2, 6, 6-trimethyl-1, 3-cyclohexadiene-1-yl) ethanone. The method has the advantages of easily available raw materials and high reaction yield, and can be industrially implemented on a large scale.

The present invention provides a composition for forming a gel polymer electrolyte which includes a lithium salt; an organic solvent; and a crosslinking compound represented by Formula 1. wherein in Formula 1, L1, L2, L3, and L4 are each independently selected from a direct bond or an alkylene group having 1 to 3 carbon atoms, L5 and L6 are each independently an alkylene group having 1 to 20 carbon atoms in which at least one methylene group is optionally substituted with an ether group and at least one hydrogen is substituted with fluorine, and R1 and R2 are each independently selected from hydrogen, an alkyl group having 1 to 3 carbon atoms, or a halogen.

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is shown as G1, G2, G3, G4, G5 and G6, R1 represents hydrogen, phenyl, halogen and C1-C4 alkyl, and A1 represents C1-C4 alkyl or phenyl; r2 represents hydrogen or methyl; n is a positive integer selected from 1-10. The optical monomer provided by the invention contains a plurality of aromatic rings with high molar refractive index and low molar volume, and also contains sulfur atoms with relatively high molar refractive index, so that the whole molecule of the whole monomer is extremely high in refractive index. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.

The invention discloses hydrolysis-resistant liquid phosphite ester and a preparation method and application thereof.The hydrolysis-resistant liquid phosphite ester is prepared by the steps that 2, 2, 4-trimethyl-1, 3-pentanediol and phosphorus trichloride or phosphite triester serve as raw materials, a cyclization reaction is conducted firstly, and then the hydrolysis-resistant liquid phosphite ester is obtained; and then carrying out nucleophilic substitution on Cl or aryl and alkyl on the cyclized intermediate by using higher saturated monohydric alcohol with more than C8, wherein the molecular structure is as shown in formula I in the specification. The liquid phosphite ester is novel liquid phosphite ester, the main body of the liquid phosphite ester is of a six-membered ring structure, the basic structure of the phosphite ester is reserved to the maximum extent, and the anti-oxidation effect of the phosphite ester is guaranteed; hydrophobic aliphatic chain structures on phosphorus atoms and branched chains of the phosphorus atoms prevent water molecules from approaching P-O bonds, so that the phosphorus atoms and the branched chains are prevented from being attacked by the water molecules, and the hydrolysis resistance is improved under the conditions that any additional amine hydrolysis-resistant agent is not used and any steric hindrance group is not introduced; good practical value, economic value and market prospect are realized.

The invention discloses an aluminum oxide coated diaphragm and a preparation method thereof in the field of lithium ion battery diaphragms. The diaphragm comprises aluminum oxide particles, a fluorine-containing porous organosilicon compound, a phosphorus heterocyclic covalent organic framework, a binder, a dispersant and deionized water. The fluorine-containing porous organosilicon compound is prepared by mixing methyltrimethoxysilane, perfluorohexyltrimethoxysilane and water, adding ammonia water to adjust the pH value, then reacting to form a sol-gel system, adding amino silane to continue reacting, and then carrying out rotary evaporation, calcination and grinding. The phosphorus heterocycle covalent organic framework is prepared by dissolving cyanuric chloride, triphenylphosphine oxide and anhydrous tetrahydrofuran, adding imidazole bromide to react to form an intermediate, then adding ethylene glycol to continuously react, and performing vacuum drying and grinding to obtain the phosphorus heterocycle covalent organic framework. According to the diaphragm, the interface adhesion and electrolyte wettability are enhanced synergistically through the bifunctional compound, and the thermal stability and the cycle performance are improved.

The invention relates to the technical field of organic synthetic chemistry, in particular to a preparation method of ethyl 2-n-butyl acetoacetate, which comprises the following specific steps: S1, preparation of a composite solid base catalyst, S2, synthesis of ethyl 2-n-butyl acetoacetate, S3, post-treatment of a reaction solution, and S4, separation and purification of a product. The preparation method has the following beneficial effects that the magnesium-aluminum composite oxide is used as a carrier, and the composite solid base catalyst loaded with potassium and lanthanum has relatively high catalytic activity and selectivity; the magnesium-aluminum composite oxide carrier has a relatively large specific surface area and rich alkaline sites, so that a good catalytic environment is provided for the reaction; as a main active component, potassium ions can effectively activate alpha-active methylene of ethyl acetoacetate and promote formation of negative ion intermediates; the introduction of lanthanum ions can adjust the electronic structure of the catalyst, enhance the stability of the active center and inhibit the occurrence of side reactions.

The invention discloses a dithiocarbamate monomer, a holographic recording medium, a preparation method and a related device, the structural general formula of the monomer is as shown in G1 and G2, R1 represents any one of hydrogen, halogen and C1-C4 alkyl, R3 represents any one of hydrogen, halogen and C1-C4 alkyl, A1 represents C1-C4 alkyl, A2 represents hydrogen or methyl, n is a positive integer, and n = 1-10. The dithiocarbamate monomer provided by the invention has high refractive index, and the holographic recording medium with high sensitivity, high diffraction efficiency and high refractive index modulation degree can be obtained by applying the dithiocarbamate monomer to preparation of the photopolymer holographic recording medium; holographic recording media can be used to prepare volume holographic gratings, holographic optical elements, and optical devices.

A magnetic toner comprising a toner particle comprising a binder resin and a magnetic body, wherein the binder resin comprises a styrene-acrylic resin, the styrene-acrylic resin comprises a monomer unit represented by Formula (1):where, in Formula (1), R1 represents a hydrogen atom or a methyl group; and R2 represents a linear alkyl group having CB carbon atoms, CB being an integer from 10 to 15; the magnetic body comprises an alkyl group having CM carbon atoms, on a surface of the magnetic body, CM being an integer from 4 to 20; CB and CM satisfy Formula (3):|CM−CB|≤10  (3), andin a cross-sectional observation of the magnetic toner using a transmission electron microscope, a coefficient of variation of an occupied area ratio of the magnetic body in a specific square grid, is 80.0% or lower.

The invention discloses a polyolefin self-repairing material and a preparation method thereof, a main chain of the polyolefin self-repairing material contains structural units shown in a general formula (I) and a general formula (II), a side chain of the polyolefin self-repairing material contains a structural unit shown in a general formula (III), the main chain and the side chain are connected through a covalent bond, in the formulas, x and y are molar percentages of the structural units in the main chain, and in the formulas, x and y are the molar percentages of the structural units in the main chain. X and y are positive numbers satisfying x > 0, y > 0, x > y, and 80% < = x + y < = 100%; r is a halogen atom, and R1 and R2 are aliphatic methylene chains or aromatic groups with the carbon atom number of 1-10; and R3 is amino, hydroxyl or carboxyl. The polyolefin self-repairing material has both a physical effect and a chemical effect, the self-repairing time of the material can be shortened, and the self-repairing efficiency is improved. Meanwhile, dynamic chemical bonds endow the material with a cross-linked structure, and the mechanical property of the material can be improved.

The invention discloses a preparation method of a sulfonic acid type covalent organic framework material and a preparation method of 5-hydroxymethylfurfural. The material is prepared by carrying out covalent condensation reaction on a monomer containing a sulfonic acid group precursor and a connecting ligand of a skeleton through a hot solvent method, and the catalyst has the characteristics of high crystallinity, large specific surface area, ordered pore structure, high sulfonic acid group density and uniform distribution. The preparation method is simple, convenient, efficient, mild in condition and high in yield. Compared with a traditional lewis acid catalyst for preparing 5-hydroxymethylfurfural through fructose dehydration, the material has the advantages of being uniform and adjustable in porosity, higher in active site, capable of promoting fructose hydrolysis and the like, efficient conversion can be achieved, side reactions and product transition polymerization are inhibited, and better industrialization prospects are shown.

The invention discloses a nano-enzyme-SERS (Surface Enhanced Raman Scattering) bifunctional sensor for detecting colorectal cancer markers with high sensitivity as well as a preparation method and application of the nano-enzyme-SERS bifunctional sensor. The preparation method comprises the following steps: coating a layer of platinum (Pt) on the surface of gold nanoparticles (AuNPs) by utilizing a chemical reduction method so as to form gold-platinum nanoparticles (Au (at) Pt NPs); assembling the synthesized Au (at) Pt NPs into an aminated capillary tube through electrostatic adsorption, so as to prepare a capillary tube SERS (Surface Enhanced Raman Scattering) substrate; the surface of Au (at) Pt NPs is modified with a marker aptamer through an Au-S bond, and the nano enzyme-SERS dual-function sensor is prepared. In the presence of hydrogen peroxide (H2O2), the Au (at) Pt NPs can catalyze the oxidation of 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) to generate oxidized TMB (oxTMB) with a strong SERS (Surface Enhanced Raman Scattering) signal. When Hcy exists, the reductive sulfydryl of Hcy consumes hydroxyl free radicals (. OH) generated by H2O2 decomposition, so that TMB oxidation is inhibited, and SERS signal intensity is weakened. A linear regression equation of the logarithm of the Hcy concentration and the signal intensity is drawn according to the SERS signal intensity, so that quantitative detection of the Hcy is realized.

The present disclosure relates to a perovskite system comprising a perovskite film including perovskites having a three-dimensional heterostructure of formula ABX3 characterized by a tetragonal perovskite surface. A comprises at least one of methylammonium, formamidinium, cesium, or guanidinium. B is Pb or Sn. X comprises at least one of I, Br, or Cl. The perovskite system further comprises an interfacial capping layer including anilinium-based surface-capping ligands, the ligands being distributed at the tetragonal perovskite surface of the perovskite film and non-reactive with the perovskites, as determined by time-of-flight secondary ion mass spectrometry. Also described are methods of preparing the perovskite system, and solar cells or modules comprising the perovskite system.

The invention relates to the technical field of photocatalysts, in particular to a bismuth-defect bismuth oxybromide-sulfur-defect bismuth sulfide bromide heterojunction and a preparation method and application thereof in photocatalytic CO2 reduction, Bi (NO3) 3.5 H2O, thiourea, cetyltrimethylammonium bromide (CTAB) and the like are used as raw materials, and the VBi-Bi4O5Br2 / VS-Bi19Br3S27 heterojunction is prepared through a two-step hydrothermal method. According to the VBi-Bi4O5Br2 / VS-Bi19Br3S27 heterojunction, bismuth vacancies and sulfur vacancies are introduced, the visible light absorption range of the material is expanded through a proper amount of double vacancies, more electron capture centers are provided, and the separation efficiency of photo-induced electrons and the vacancies is improved, so that the VBi-Bi4O5Br2 / VS-Bi19Br3S27 heterojunction has excellent performance of photocatalytic reduction of CO2, and the preparation method of the VBi-Bi4O5Br2 / VS-Bi19Br3S27 heterojunction is suitable for large-scale production and application of the VBi-Bi4O5Br2 / VS-Bi19Br3S27 heterojunction. CO2 can be reduced into a single product CO, and the photoreduction efficiency of the carbon dioxide can be improved.

The invention discloses a polyacid-based metal viologen framework crystalline material as well as a preparation method and application thereof, and belongs to the technical field of heterogeneous catalytic materials. The crystalline material is synthesized in one step through a hydrothermal method, the molecular formula is Cu2 (H2O) 2 (L) 2 [PW12O40] [OH]. 2H2O, the crystalline material belongs to a monoclinic system, the space group is P21, the cell parameters are alpha = 90 degrees, beta = 114.208 (2) degrees and gamma = 90 degrees, and the structure of the crystalline material is determined through X-ray diffraction. According to the material, accurate compounding of polyacid clusters and metal viologen on the molecular level is achieved, an effective electron transmission channel is constructed, separation of photon-generated carriers is remarkably promoted, and excellent photocatalytic activity is shown. At the ambient temperature, the crystalline material can be used as a catalyst to efficiently degrade dye pollutants (such as methylene blue and rhodamine B) in a water body, the degradation rate within 60 minutes exceeds 90%, and the crystalline material has good cycle stability and structural durability.

The invention discloses surface-modified self-repairing polyurethane, a friction nano-generator, a preparation method and application, and belongs to the technical field of material scientificity, and the preparation method of the surface-modified self-repairing polyurethane comprises the following steps: uniformly mixing a fluorine-containing group compound and hexamethylene diisocyanate, and carrying out heating reaction, extraction and drying to obtain the surface-modified self-repairing polyurethane. Mixing with serinol, dissolving in an organic solvent, heating for reaction, and drying to obtain a fluorine-containing group chain extender; and dissolving a quadruple hydrogen bond-containing chain extender and a fluorine-containing group chain extender in an organic solvent, adding the isocyanate-terminated polyurethane prepolymer, and carrying out stirring reaction, mold reversing and drying to obtain the surface-modified self-repairing polyurethane. The self-repairing polyurethane can effectively improve the environmental adaptability and the service life of the friction nanometer generator. The surface charge transfer efficiency is enhanced due to good conductivity, and the power generation performance is improved; meanwhile, the mechanical property is enhanced through hydrogen bond crosslinking, so that compared with traditional equipment, the environment universality is better.

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is shown as G1, G2, G3, G4, G5, G6, G7 and G8, R1 is selected from one of the formulas, and R2 is hydrogen or methyl; n is a positive integer selected from 1-10. The optical monomer provided by the invention contains a plurality of aromatic rings with high molar refractive index and low molar volume, and also contains sulfur atoms with relatively high molar refractive index, so that the whole molecule of the whole monomer is extremely high in refractive index; the polymer also has a phenyl dithiocarbamate structure, and has good compatibility with film-forming resin with carbamate when being used for a photopolymer holographic recording medium. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.

The invention discloses an indium-based metal-organic framework material based on a pyridine hexacarboxylic acid ligand as well as a preparation method and application of the indium-based metal-organic framework material, the chemical formula is {[NH2Me2] 2 [In4 (mu2-O) (H6L) 2 (H2O) 2]. 3DMF. 10H2O} n, and H6L is an organic ligand 4, 4 ', 4' '-(pyridine-2, 4, 6-triyl) triisophthalic acid. The material has excellent thermal stability and chemical stability, and due to the frame charge characteristic and the excellent pore structure of the material, the metal organic frame material shows efficient dye selective adsorption and separation performance, can selectively adsorb cationic dye methylene blue MB and repel anionic dye methyl orange MO at the same time. In conclusion, a new design thought is developed for the novel indium-based metal organic framework material based on the pyridine hexacarboxylic acid ligand, and meanwhile, a new candidate is provided for developing a high-efficiency dye wastewater purification material.

The application discloses a preparation method of perfluoroalkyl aryl sulfide, and a structural formula of the perfluoroalkyl aryl sulfide is shown as formula (I); the method comprises the following steps: firstly, obtaining corresponding aryl sulphenyl chloride by chlorination of thiophenol; under the condition that fluoride and crown ether exist, obtaining perfluoro-1,1-dimethylbutyl negative ion by addition of D-2 ‑ And the aryl sulphenyl chloride added is subjected to a nucleophilic substitution reaction to synthesize a product (1,1,1,3,3,4,4,5,5,5-decafluoro-2-trifluoromethylpent-2-yl)(aryl)sulfide. The application adopts a reaction strategy of efficient coupling of thiophenol and perfluoroalkyl, and can be used for preparing various fluorine-containing benzene sulfide compounds.

The invention discloses a preparation method of an SGLT2 inhibitor key intermediate, and belongs to the technical field of medicinal chemistry. The preparation method comprises the following steps: 1) reacting a compound B with trimethylchlorosilane under an alkaline condition to generate a compound C; 2) reacting the compound C with an aldehyde group reagent on an aromatic ring to generate a compound D; 3) reacting the compound E with a bromination reagent to generate a compound F; 4) preparing the compound F into a Grignard reagent to generate a compound G; 5) carrying out addition reaction on the compound D and a compound G to generate a compound H; and 6) carrying out dehydroxylation and trimethylsilyl protection on the compound H to generate a compound A. According to the preparation method, the risk caused by amplification of the Sandmeyer reaction in the original route is avoided, and meanwhile, the preparation cost of the key intermediate is greatly reduced.

The invention discloses a synthesis method of 9-dichloromethylene-5-amino-benzonorbornene and an intermediate product, the synthesis method comprises the following steps: firstly, synthesizing a cyclization compound 1 as shown in a formula 1 from a cold solution of 6, 6-dichlorofulvene and 1, 4-benzoquinone under the action of a solution of a catalyst I, carrying out oximation reaction on the cyclization compound 1 prepared in the step a and hydroxylamine salt under an alkaline condition, and carrying out post-treatment to obtain the 9-dichloromethylene-5-amino-benzonorbornene. Under the action of a catalyst II, adding the oximate 2 prepared in the step b into a closed container, carrying out hydrogenation reduction to obtain 9-dichloromethylene-5-amino-benzo norbornene, and directly treating the reduction product with acid to obtain 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene. According to the method, the cyclization compound is oximated firstly, then the residual carbonyl and two double bonds on the ring are subjected to one-step reduction through catalytic hydrogenation, the working procedure is optimized, meanwhile, reduction by using expensive sodium borohydride is avoided, the method is short in synthesis route and suitable for industrialization, and the production cost is reduced.

The invention provides a phosphorus-nitrogen coordinated metallocene compound and a preparation method and application thereof, the compound has a structure as shown in a formula I: in the formula I, M is selected from IVB group metals in the periodic table of elements; r1 is selected from hydrogen, halogen, C1-C10 direct or branched alkyl, and C1-C3 alkoxy; r2 is selected from hydrogen and C1-C6 straight chain or branched chain alkyl; y is selected from chlorine, C1-C3 alkyl substituted or unsubstituted by trimethylsilyl, and amino substituted by trimethylsilyl. The phosphorus-nitrogen coordinated metallocene compound provided by the invention has relatively high thermal stability, catalytic activity and comonomer insertion rate, and can realize high-temperature solution polymerization of ethylene and norbornene.

The present application provides a photosensitive resin composition, dry film resist, photosensitive dry film and application thereof. The photosensitive resin composition comprises 45-60 parts of alkali-soluble resin, 35-50 parts of photopolymerization monomer, 2.5-5 parts of photoinitiator and 0.1-0.8 parts of sensitizer; the sensitizer is a compound shown in the general formula, R1 represents methylene or carbonyl, n represents 0 or 1; R2 represents phenyl, and any hydrogen atom on R2 is optionally substituted by methoxy, C1-C 10 alkyl, phenyl, benzyl or phenoxy. The sensitizer of the present application can make the product have better photosensitivity and resolution. Moreover, based on the above specific weight parts of alkali-soluble resin, photopolymerization monomer, photoinitiator and sensitizer, the comprehensive performance of the product of the present application is better.

The application discloses a triazolinone compound, and a preparation method thereof. The structural general formula (I) of the triazolinone compound is as follows: the preparation method is to perform esterification or amidation reaction on a compound containing a hydroxyl group or an amino group as raw material in a solvent and 2-chloro-3-(2-chloro-5-(4-difluoromethyl-3-methyl-5-oxo-1,2,4-triazol-1-yl)-4-fluorophenyl) propionyl chloride prepared through acyl chloride reaction, so as to obtain a triazolinone structure-containing herbicidal compound. The preparation method is simple, the reaction process is short, and the triazolinone structure-containing herbicidal compound has the advantages of novel structure, high herbicidal activity and the like.

This compound is represented by general formula (A), where: R1 is a hydrogen atom, a halogen atom, a hydroxy group, or an optionally substituted C1-10 hydrocarbon group; R2 is a hydrogen atom, a halogen atom, a hydroxy group, or an optionally substituted C1-10 hydrocarbon group; X is a nitrogen atom or a hydrogen-bonded carbon atom; Y is a carbonyl group or an optionally substituted methylene group; and n is an integer of 1-3.

This invention relates to an integrated electrocapture and conversion catalyst, its preparation method, and its application in the electroreduction of flue gas to produce carbon monoxide. The catalyst consists of gold nanoparticles modified with thiadiazole-based organic ligands, including 2-amino-5-mercapto-1,3,4-thiadiazole, 2-mercapto-5-methyl-1,3,4-thiadiazole, or 2,5-mercapto-1,3,4-thiadiazole. This invention provides a method for preparing the aforementioned integrated electrocapture and conversion catalyst. This method features mild preparation conditions, a simple and clear process, and good reproducibility. The thiadiazole-based organic molecular layer captures carbon dioxide in a reduced state, achieving local enrichment of carbon dioxide. The enriched carbon dioxide is further reduced to carbon monoxide by the gold nanoparticles. In flue gas with a 15% carbon dioxide concentration, a carbon monoxide Faraday efficiency of up to 80.4% can be obtained.

The invention belongs to the technical field of organic chemical synthesis, and particularly relates to a novel method for synthesizing trifluoromethyl heteroaromatic hydrocarbon. The invention provides a novel method for synthesizing a trifluoromethyl heteroaromatic compound, the reaction system is mild, the substrate application range is wide, and the functional group compatibility is good. Specifically, in a rotating magnetic field, a metal conductor cuts magnetic induction lines to generate electron transfer, so that trifluoromethyl sulfosalt is reduced to generate trifluoromethyl free radicals, and the trifluoromethyl free radicals react with heteroaromatic hydrocarbon to synthesize trifluoromethyl heteroaromatic hydrocarbon. The method for synthesizing the trifluoromethyl heteroaromatic hydrocarbon comprises the following steps that firstly, heteroaromatic hydrocarbon, trifluoromethyl sulfosalt, a solvent and a metal rod are placed in a reaction tube and react in a multi-energy field coupling device, the magnetic field intensity (B) is set to be 0.01-3.00 T, the rotation frequency is set to be 5-50 Hz, the reaction time is set to be 1-24 h, finally, the trifluoromethyl heteroaromatic hydrocarbon is prepared, and the general formula of the trifluoromethyl heteroaromatic hydrocarbon is shown in the specification.

The invention relates to aziridinyl-functional organic compounds comprising a group Z of Formula (I1), wherein n is an integer ranging from and including 1 up to and including (100), and R' is selected from the group consisting of hydrogen, methyl and C2-C4 saturated aliphatic hydrocarbyl. The invention further relates to particles, composition, cured forms of the aziridinyl-functional organic component, the particles and the composition. The invention further relates to an article.

The invention relates to the technical field of chemical reaction equipment, and discloses a reaction device and method for synthesizing free radicals from chloromethyl ethyl ether, the reaction device comprises a support, the inner wall of the support is rotatably connected with a shell, the top of the shell is connected with a first feeding port in a penetrating mode, and when a driving rod rotates, the driving rod drives a second gear ring and a first circular ring to rotate through a gear; due to the fact that the diameter of a first gear ring and the diameter of a second gear ring are different, the rotating speed difference exists between a first circular ring and a driving rod, metal particles enter the inner wall of the driving rod through a second feeding port, and the rotating speed difference exists between the driving rod and the first circular ring, it can be regarded that an auger rotates on the inner wall of the driving rod, and the rotating auger drives the metal particles to flow upwards; flowing metal particles flow out from the discharging port, so that the metal particles precipitated at the bottom of the reaction kettle can flow from bottom to top, and the situation that ethanol is differentiated from part of solution due to the fact that the metal particles at the bottom are heated too high is effectively prevented.