133results about How to "The reaction device is simple" patented technology

The invention discloses a catalyst for intermittent preparation of pure hydrogen using decahydronaphthalene as material and a method thereof. The catalyst contains nanometer metal and nanometer carbon fibre, wherein the nanometer metal is selected from Pt or alloy containing Pt. The method for preparing the pure hydrogen comprises a step (1) of mixing the decahydronaphthalene with dehydrogenation reaction catalyst and heating to a temperature of 100-350 DEG C for reaction to obtain hydrogen.

The invention relates to a skutterudite based thermoelectric material, a thermal protection coating for devices and a preparation method thereof. The skutterudite based thermoelectric material and the thermal protection coating for the devices comprise the following components: 20-80 weight parts of organosilane, 3-60 weight parts of silica sol, 3-55 weight parts of glass powder and 3-50 weight parts of water. The invention further provides the preparation method of the skutterudite based thermoelectric material and the thermal protection coating for the devices.

The invention discloses a functionalized GO (graphene oxide) and RTV (room temperature vulcanization) silicone rubber nanocomposite and a preparation method thereof. The method comprises steps as follows: firstly, the surface of GO is grafted with maleimide siloxane, GO-PTESMI is obtained, then double bonds of maleimide on grafting chains in GO-PTESMI are subjected to a hydrosilation reaction with Si-H group terminated PDMS (polydimethylsiloxane) in a solution, and GO (functionalized GO) with surface linked with PDMS grafting chains containing imide groups is prepared; then the functionalized GO is dispersed in a dispersing agent uniformly, and the silicone rubber nanocomposite with different content of functionalized GO is prepared through solution blending. According to the invention, imide bonds and polysiloxane long chains are introduced to the surface of GO, so that interface interaction force and mechanical properties of the nanocompoiste can be improved simultaneously, and the RTV silicone rubber material with capacity of playing excellent performance of GO better is prepared.

The invention provides a water treatment method for removing trihalomethane in drinking water by utilizing UV (ultraviolet)/H2O2. The water treatment method comprises the following steps: introducing the drinking water into a reaction device, starting a magnetic stirrer in the reaction device, and adjusting the rotational speed of the magnetic stirrer to be 125-300 r/min; putting a UV lamp tube capable of stably emitting light into the reaction device, and arranging a quartz sleeve tube outside the UV lamp tube; adding H2O2 into the drinking water in the reaction device for treatment, wherein the additive amount of H2O2 is 5-30 mmol/L, the power of a UV lamp is 12-75 W, and the retention time is 20-60 minutes; removing trichloromethane, tribromethane, dibromochloromethane and bromodichloromethane contained in trihalomethane in the treated drinking water, wherein the removal rates of trichloromethane, tribromethane, dibromochloromethane and bromodichloromethane can reach 43.97%, 99.61%, 99.38% and 93.07% respectively. The water treatment method has the benefits that the method is capable of completely decomposing trihalomethane, free of secondary pollution, low in H2O2 consumption and low in energy consumption, has a certain removal effect on TOC (total organic carbon) and UV254 in the drinking water, and has a very good removal effect on trihalomethane.

The invention discloses a method for forming a ZnS/SnS/CuA core-shell structure composite powder through thermosynthesis of a normal pressure solvent. Reaction raw materials are dispersed in the solvent to form a raw material solution; and then the reaction raw material solution is added to a three-necked flask step by steps; and the thermosynthesis reaction of the normal pressure solvent is completed by heating in a magnetic stirring oil bath. The synthesis speed of the thermosynthesis reaction of the normal pressure solvent is increased through magnetic stirring; and the thermodynamic and dynamic conditions for generating a product are achieved through stirring while heating so that the target product ZnS/SnS/CuA core-shell structure composite powder is synthesized. The method provided by the invention has the advantages of low cost, simple reaction device, high reaction process controllability and the like, and is capable of controlling the whole reaction synthesis process quite flexibly, thereby forming specific structure and specific composition.

The invention discloses an intracellular micro-RNA non-enzymatic amplification detection method based on an electrostatic affinity nano-transporter and cell imaging. According to the method, sequencesof specific DNA (deoxyribonucleic acid) hairpin probes H1 and H2 with fluorescent labels are designed by the aid of a non-enzymatic amplification system according to a detection target micro-RNA sequence, the H1, the H2 and gold nano-particles are assembled into compounds to be transferred to tumor cells, the amplification system and the H1 can be combined when the amplification system contains micro-RNA to be detected, so that the neck of the H1 is opened, parts of generated single-chain structures and the H2 act, the neck of the H2 is opened, the distance between a fluorescent group FAM andBHQ-1 quenching group is increased, fluorescence strength is increased and detected by a fluorescence spectrometer, and intracellular imaging conditions are recorded by a confocal laser scanning microscope. The method is simple in principle, low in detection cost and has the advantages that constant-temperature non-enzymatic amplification is achieved, and the method is high in sensitivity, simpleto operate, easy to popularize and the like.

The invention discloses the application of nanometer ZSM-5 molecular sieve in the reaction for preparing methanol by dimethyl ether catalysis and hydrolyzation, relating to a method for preparing the methanol by gas-solid phase catalysis, namely, the dimethyl ether, water vapour and the ZSM-5 molecular sieve are mixed to obtain the methanol. The invention also discloses the novel application of the nanometer ZSM-5 molecular sieve.

The invention belongs to the technical field of a semiconductor nanometer material and application thereof, and relates to a core-shell structure quantum dot with a transition layer, a fabrication method and application of the core-shell structure quantum dot, a photoanode, a solar photo-electro-chemical device and application of the solar photo-electro-chemical device. The structure of the core-shell structure quantum dot with the transition layer comprises a core layer, the transition layer and a shell layer, wherein the transition layer is yCdSe<x>S<1-x>, the shell layer is CdS, x is more than 0 but less than 1, and y is more than 1. By changing the material structure of the quantum dot and adjusting the energy band structure of the quantum dot, the response of the quantum dot on sunlight is promoted, moreover, the separation of electron hole pairs is facilitated, and the photoelectronic generation efficiency is improved.

The invention discloses a preparation method and application of superfine calcium hexaboride to a battery. The preparation method comprises the steps of: carrying out electrolysis in a fused-salt electrolytic cell at a temperature of 500-750 DEG C through taking a composition of porous calcium borate and a metal current collector as the cathode and taking an insoluble conductor material as the anode, wherein fused-salt electrolyte contains a haloid corresponding to a metal capable of chemically reducing the calcium borate, and the voltage applied through the electrolysis is enough to reduce the calcium borate but not enough to resolve the fused-salt electrolyte; and taking out a reduction product on the cathode from the electrolytic cell, washing by using water and acid removing impurities, drying and then obtaining CaB6 powder. The obtained superfine calcium hexaboride can be used for a cathode material of a high-specific energy alkaline cell. By means of the method, the defects of high synthesis temperature, low yield and more expensive raw material of conventional boride are overcome and continuous production can be carried out.

The invention discloses a biomimetic preparation method of a strontium carbonate crystal, wherein a coronary strontium carbonate nano crystal is prepared by a biomimetic method in a specific communication device by adopting strontium chloride hexahydrate and ammonium bicarbonate as reactants and sesbania gum as a biological regulation agent. According to the target product coronary strontium carbonate nano crystal, the corolla diameter is 3,000-6,000nm; the corolla is composed of nano rods with diameter being 50-80nm; the corolla structure is tight, with purity being greater than or equal to 99% and yield being 97-99%. The method disclosed by the invention has the characteristics of mild conditions, low energy consumption, large corolla diameter, tight corolla structure, high purity, highyield, low preparation cost, etc.

The invention discloses a preparation method for nano-silver powder. The preparation method for the nano-silver powder comprises the following steps that a silver source and a protective agent are dissolved in polyol to prepare a silver-containing solution; an alkaline solution is mixed with the silver-containing solution, and hydrothermal reaction is carried out at the reaction temperature of 120-200 DEG C; and a reaction product is collected and separated to obtain the nano-silver powder, wherein the particle size of nano-silver particles in the nano-silver powder is 50 nm - 600 nm. According to the preparation method for the nano-silver powder, the silver source and the polyol are taken as raw materials, and the nano-silver powder is obtained through hydrothermal method one-step reaction; and a reaction system of the preparation method is simple, the additional reducing agent does not need to be added, and the hydrothermal condition is controlled so that the control of the nano-silver particle size can be realized.

The invention belongs to the technical field of chemical catalysis and relates to a micro-spherical organic polymer solid acid esterification catalyst and a preparation method thereof. In the invention, the method for preparing the micro-spherical polymer solid acid esterification catalyst comprises the following concrete steps: adding 100 parts by weight of distilled water into a reaction kettle, and then, adding 20-50 parts by weight of vinyl unsaturated monomer, 0.1-3 parts by weight of initiating agent and 1-5 parts by weight of emulsifying agent under the condition of stirring for reacting for 1-6h in a boiling state to form an emulsion; cooling the reactants, and acidifying the reactants with an acidifying agent to obtain white solid precipitates; and drying the white solid precipitates in a vacuum drying oven to obtain the micro-spherical polymer solid acid catalyst. The catalyst of the invention can be recycled and regenerated easily and has the advantages of stable catalytic performance, small alcohol acid ratio, no side reaction, high yield, simple after-treatment of products and lower cost.

The invention discloses a fumaropimaric acid modified acrylamide compound, a preparation method thereof and a polymer prepared by the fumaropimaric acid modified acrylamide compound. A structural formula of the fumaropimaric acid modified acrylamide compound is shown in the description. As the fumaropimaric acid modified acrylamide compound is synthesized by taking fumaropimaric acid, a by-product of rosin which is a natural biomass resource, as a raw material, and then the fumaropimaric acid modified acrylamide polymer is obtained through polymerization of the fumaropimaric acid modified acrylamide compound, a synthesis step and a reaction device are simple, the operation is convenient, and the problems of poor heat resistance, difficulty in separation, slow reaction speed, low recycling use performance and the like and the technical problems of environment protection and safety are all solved due to excellent heat resistance, excellent adsorption performance to heavy metals and capability of being repeatedly used for multiple times of the obtained polymer.

The invention discloses an oxidization and degradation composite catalyst and the use thereof in the preparation of a spice from carotenoid, which is the divisional application of the Chinese invention patent application of which the application number is 20810155733.7. The oxidization and degradation composite catalyst is prepared from a metal salt oxidization catalyst and a natural mineral degradation catalyst in a mass ratio of 1:99 to 99:1, wherein the metal salt oxidization catalyst may be one or two, which are mixed in any ratio, of Na2CO3 and CaCO3; and the natural mineral degradation catalyst may be one or several, which are mixed in any ratio, of atlapulgite, kieselguhr and kaolin. The use of the composite catalyst in the preparation of the spice from the carotenoid comprises the following steps of: adding the carotenoid and the oxidization and degradation composite catalyst the amount of which is 0.1 to 10 percent based on the mass of the carotenoid into an inert medium together; and allowing the materials to react at 100 to 200 DEG C for 3 to 24 hours to obtain a multi-component oxidization and degradation product which can be used as the spice. The inert medium may be silicone oil, methyl silicone oil, dimethyl silicone oil or phenyl silicone oil.

The invention discloses an acetylacetone copper (II) catalytic synthesis method for 1,2,3 triazole chemical compounds, and belongs to the field of the synthetic technology of the 1,2,3 triazole chemical compounds. According to the technical scheme, azide and end group compound serve as raw materials, the acetylacetone copper (II) serves as a catalyzer, water serves as a solvent, stirring and reacting are conducted, complete reaction of the raw materials is monitored by TLC, ethyl acetate is added to extract a reaction product, water phase and organic phase are filtered at the same time, a filter cake is cleaned by using the ethyl acetate to obtain the catalyzer, namely, the acetylacetone copper (II) to be recycled repeatedly, and skimming is conducted on filter liquor to obtain the organic phase of the 1,2,3 triazole chemical compound. The catalyzer is cheap, the preparation method is simple, the catalytic efficiency is high, reutilization can be achieved, the catalyzer is reproducible, the reproductive catalyzer still has high catalytic activity, and the yield of the product is equal to the catalyzer before reproduction is conducted.

The invention discloses a method for synthesizing hydroxyl polysiloxane. The method comprises the following steps of: (1) weighing a reaction monomer and alkali, adding into a reactor, and stirring at the temperature of between 40 and 80 DEG C for 0.5 to 2 hours; (2) adding deionized water and amine into the reactor, preserving the heat at the temperature of between 40 and 80 DEG C and reacting with stirring for 4 to 9 hours; and (3) performing water washing on a product until the product is neutral, and vacuumizing to obtain a hydroxyl polysiloxane product. The method for synthesizing the hydroxyl polysiloxane is simple and practical and is low in cost.

The invention belongs to the field of organic semiconductor materials, and discloses a blue-light organic electrophosphorescence material, and a preparation method and application thereof. The material has the following structural formula, wherein R is a hydrogen atom, C1-C6 alkyl group or C1-C6 alkoxy group; X and Y are respectively Cl or F; and LK is an auxiliary ligand contained by an iridium metal complex. The blue-light organic electrophosphorescence material disclosed by the invention uses 2,3'-dipyridine as a major structure of the ring metal ligand, and the introduction of the alkyl and alkoxy groups can obtain satisfactory energy transfer efficiency and blue-light emitting wavelength and can a certain steric hindrance effect, thereby reducing the direct actions among metal atoms, reducing the self-quenching phenomenon of triplet-state excitons and greatly enhancing the light conversion efficiency of the material; and meanwhile, the F and Cl substitution on the ring metal ligand can improve the luminescence property, facilitate vapor deposition, improve the film-forming property, enhance the stability of the device and enhance the color purity.