27results about How to "Method environmentally friendly" patented technology

The invention provides a liquid fertilizer for improving tomato fruit saccharic acid quality and application, and belongs to the technical field of fertilizers. The liquid fertilizer for improving the tomato fruit saccharic acid quality provided by the invention is prepared from the following components in percentage by weight: 42 to 47 percent of organic nutrient solution, 10 to 15 percent of water-soluble macroelement compound, 1.5 to 2.5 percent of natural organic acid, 3.5 to 4.5 percent of plant source amino acid compound, 3 to 5 percent of compound biostimulant, 0.02 to 0.07 percent of polyglutamic acid and 0.2 to 0.4 percent of sugar alcohol medium trace element compound liquid, and 28-33% of sterile water. Through optimized formula design, the organic liquid fertilizer is rich in plant nutrition and bioactive substances, can effectively improve the healthy growth state of tomatoes, and meanwhile, remarkably improves the fruit quality.

The invention provides an iron-silicon-aluminum magnetic powder core and a preparation method and application thereof. The Fe-Si-Al magnetic powder core comprises a Fe-Si-Al magnetic powder base body and a coating layer coating the surface of Fe-Si-Al magnetic powder. And the coating layer comprises silicon dioxide and aluminum phosphate. According to the Fe-Si-Al magnetic powder core provided by the invention, the silicon dioxide and the aluminum phosphate are used as the mixed insulating coating layer, so that the resistivity of the Fe-Si-Al magnetic powder core is increased, the eddy-current loss among particles is effectively reduced, meanwhile, the maximum forming density of the material is ensured, and a relatively high saturation magnetic flux density Bs is obtained, so that a high direct-current superposition characteristic is obtained; and the aim of giving consideration to low loss and high direct current superposition characteristics is fulfilled.

The invention belongs to the field of high polymer materials, and relates to a preparation method and application of graphene oxide-based conductive hydrogel capable of being rapidly prepared at room temperature. The preparation method comprises the following steps: adding a monomer, an initiator, a reducing agent and a cross-linking agent into a graphene oxide aqueous solution, uniformly mixing, transferring an obtained precursor into a mold, and standing at room temperature to obtain the conductive hydrogel. The graphene oxide-based conductive hydrogel prepared by the invention not only has green and environment-friendly preparation conditions and simple and feasible method, but also has excellent comprehensive properties, such as excellent mechanical strength, good conductivity and strain induced resistance characteristic, and can be widely applied to the fields of flexible strain sensors, bionic electronic skin and the like.

The invention provides a method for carbon dioxide assisted organic solvent vapor-liquid phase oriented separation of wood fiber biomass, and belongs to the technical field of wood fiber biomass chemical engineering. According to the method, carbonic acid formed by CO2 and water is used as a mild and recoverable acid catalyst source, the CO2 cooperates with the extraction solvent to dissolve lignin and hemicellulose components, and vapor-liquid phase exchange of the extraction solvent is controlled by regulating and controlling the temperature change in the extraction process; the directional migration of components dissolved from lignocellulose in the vapor-phase solvent to the liquid-phase solvent is realized, the repeated recycling of the extraction solvent is realized, and the overall dosage of the extraction solvent in the treatment process is reduced. A large amount of dissolved lignin is finally enriched in a liquid phase part of the extraction solvent at the bottom of the reaction container along with phase conversion of the extraction solvent, and a cellulose component is retained in a solid phase material. The method provided by the invention not only realizes better lignin separation efficiency, but also greatly reduces the use amount of the extraction solvent.

The invention discloses a method for separating zirconium and hafnium in a solution, and relates to the field of metal adsorption, separation and purification. According to the method for separating zirconium and hafnium in the solution, firstly, specific ligands such as persulfate and hydrogen persulfate are selected, zirconium and hafnium form a zirconium complex and a hafnium complex with larger size difference in a complexing mode, then under the acidic condition that the pH is smaller than or equal to 4.0, a specific porous material with the aperture being 1-50 nm is selected, and the zirconium and hafnium in the solution are separated. According to the method, a mixture of zirconium and hafnium complexes is adsorbed, separation of zirconium and hafnium in the zirconium and hafnium ion coexisting solution is achieved, the separation coefficient beta Hf / Zr can reach 0.84 or below or 1.49 or above, and the method is environmentally friendly, simple and convenient.

The invention relates to a preparation method and application of single-layer graphene with nanopores, and belongs to the technical field of synthesis of nano materials. Comprising the following steps: S1, diluting a single-layer graphene dispersion liquid with deionized water, and adding a hydrogen peroxide solution to enable the final concentration of the mixed solution to be 0.1 M; s2, inserting a positive output electrode and a negative output electrode of a friction nano-generator into the mixed solution, starting the friction nano-generator, and continuously stirring the mixed solution to react so as to accelerate the generation of hydroxyl free radicals and quickly form nano-pores; and S3, collecting the solution after the reaction is completed, dialyzing for 3-5 times by using a dialysis bag with the size of 10kDa, and dialyzing for 3-5 hours each time, so as to finally obtain the single-layer graphene with the nanopores. The preparation cost is low, the preparation process is simple, other chemical substances are not easy to introduce in the preparation process, and large-scale batch production is facilitated.

The invention discloses a method for improving the selectivity of normal aldehyde in a high-carbon olefin hydroformylation reaction, the catalyst takes one, two or more than two of metals Rh, Co, Ir, Ru, Pt, Pd and Fe as an active component, and a carrier is an improved phosphine-containing porous organic polymer. The heterogeneous catalyst provided by the invention has good performance in the hydroformylation reaction of high-carbon olefins.

The invention relates to the technical field of laser cutting, and particularly discloses a glass laser cutting method without a polishing process, which comprises the following steps of: cleaning glass powder on the surface of a milled and ground workpiece, drying, clamping the workpiece, immersing the workpiece into a station of a laser cutting machine, and cutting the workpiece by using a laser cutting machine. Auxiliary liquid mixed with the laser cutting machine is arranged in a station of the laser cutting machine, the laser cutting machine is assisted to conduct laser cutting on a workpiece which is not subjected to a traditional polishing procedure, and the cutting task can be accurately completed; according to the method, the workpiece can be penetrated by laser to be cut without being polished by a polishing solution, and the polishing procedure, additional products in the polishing procedure and the excessive labor cost are omitted; by adopting the method, the production cost can be effectively reduced, the efficiency is greatly improved, and the method is environment-friendly.

The invention provides a preparation method of a high-fastness electrostatic spinning nanofiber adsorption antibacterial functional fabric, and belongs to the technical field of textiles. The preparation method comprises the following steps: S1, dissolving a polymer and an antibacterial substance in an organic solvent to obtain a spinning solution; s2, performing electrostatic spinning on the fabric by using the spinning solution to obtain an antibacterial functional fabric deposited with nanofibers; s3, shaping the antibacterial functional fabric deposited with the nanofibers to obtain the nanofiber adsorption antibacterial functional fabric. Before shaping, the fabric is endowed with an antibacterial function through electrostatic spinning, the dosage of an antibacterial agent is reduced, the friction loss of nanofibers caused by the working procedures of spinning, dyeing and finishing, weaving and the like is avoided, the antibacterial performance of the electrostatic spinning endowed antibacterial fabric is improved, and product performance detection is stable and reaches the standard; a cross-linking agent is not needed, the binding strength of the nanofibers and the fabric is improved through shaping, the formula is environment-friendly, and the advantages that energy consumption is reduced, and sewage discharge is reduced are achieved; and the fabric is not selected, so that the fabric has material universality.

The invention discloses a copper-based selenide for microwave absorption, a preparation method and application, the copper-based selenide is a compound formed by compounding any two or more of copper selenide (CuSe), non-stoichiometric copper selenide (Cu2-xSe) and zinc selenide (ZnSe), and the structure of the copper-based selenide is a cubic crystal structure, a hexagonal crystal structure or a combination of the cubic crystal structure and the hexagonal crystal structure; the preparation method comprises the following steps: mixing a solution prepared from hydrazine hydrate (N2H4.H2O) / diethylenetriamine / deionized water with a solution prepared from metal zinc salt and sodium selenite (Na2SeO3), carrying out ultrasonic stirring to obtain a metal zinc selenide (ZnSe) precursor solution, carrying out a hydrothermal reaction on the precursor solution, filtering, and drying to obtain the metal zinc selenide (ZnSe) photocatalyst. Dispersing in a deionized water solution, mixing with metal copper salt to obtain a copper-based selenide precursor solution, finally performing hydrothermal reaction on the copper-based selenide precursor solution, naturally cooling, filtering and drying to obtain metal copper-based selenide; the copper-based selenide is applied to a microwave absorbing material; the preparation raw materials are cheap and easy to obtain, the process is simple, repeatability and controllability are high, consumed time is short, and green and environment-friendly effects are achieved.

The invention relates to the technical field of detection and analysis, in particular to a method for determining styrene polymers in a polyolefin-styrene polymer blending system, which comprises the following steps: (a) carrying out Py-GCMS test on a sample to be tested, selecting m / z 104 and m / z 168 as characteristic ions, and extracting corresponding ion chromatograms; (b) analyzing to obtain the type of the styrene polymer in the blending system according to the peak appearance condition in the ion chromatogram; the thermal cracking temperature in the test is 550-650 DEG C; in the blending system, the mass percent of the styrene polymer is 10%-100%. According to the method, the types of the polystyrene polymers blended with polyolefin can be quickly distinguished by utilizing the cracking principle of the styrene polymers with different structures at high temperature and understanding the difference of products, and the method is green, environment-friendly, accurate and efficient.

The invention discloses a dielectric ceramic, an energy storage-fluorescent dielectric capacitor with a transparent shell based on the dielectric ceramic and a method, and belongs to the technical field of lead-free dielectric ceramic capacitors. The dielectric ceramic disclosed by the invention has the characteristics of compact structure, small grain size and uniform element distribution, so that the dielectric ceramic has the excellent characteristics of large dielectric constant, good energy storage performance, high fluorescence intensity and capability of emitting light close to white light. The energy storage-fluorescent dielectric capacitor with the transparent shell disclosed by the invention has the characteristics of high light transmittance, high use temperature and sensitive fluorescent detection, is suitable for the field of non-contact nondestructive detection of dielectric capacitors, and has a relatively high application value in the aspects of structural phase change monitoring, service failure and the like of the dielectric capacitors.

The invention belongs to the technical field of organic compounds, and provides a method for producing an oil mixture by using methanol. According to the present invention, the methanol and the light hydrocarbon auxiliary agent are adopted as the raw materials, the hydrogenation synthesis reaction is performed in the presence of the hydrogen and the catalyst to prepare the oil mixture, the product contains rich oxygen-containing organic compounds and alkanes, the product value is improved, and the prepared oil mixture has characteristics of high octane number, low cost, and easy industrial production. The method can be directly used as efficient and clean high-quality fuel oil, can also be used as an auxiliary agent to be added into the existing fuel to improve the octane number of the fuel, can also separate the components and be independently used as a solvent, and is simple, convenient, easy to operate and environment-friendly, and meets the requirement of carbon reduction.

The present invention relates to a method for preparing 4-amino-5-methyl-2(1H)-pyridone of formula (I) by reacting 2-chloro-5-methyl-4-pyridinamine of formula 2 with KOH in methanol in a pressure reactor, and to a method for preparing 2-chloro-5-methyl-4-amino-pyridine-1-oxide of formula 3 by hydrogenating using a platinum catalyst. 4-amino-5-methyl-1H-pyridine-2(I)-one of formula (I) is an intermediate product for preparing phenelenone of formula (II), an MR antagonist.

This invention belongs to the field of precision electronic circuit manufacturing technology, and provides a method and device for repairing broken lines in micro-circuits based on electric field-driven micro / nano 3D printing. This invention employs electric field-driven jet deposition micro / nano 3D printing technology, with the printing nozzle connected to a high-voltage power supply. Utilizing the diameter reduction effect of the Taylor cone in electrostatic dynamics, it achieves the fabrication of micro / nano-scale feature structures. Under the action of electrostatic field tension (changing traditional pressure-driven to tension-driven), high-viscosity materials can be printed with high resolution, enabling the repair of conductive line defects below 1μm. It is particularly suitable for repairing three-dimensional / curved conductive lines and conductive line defects in large-size (meter-scale) substrates. This invention can achieve high-resolution, high-precision, low-cost, and efficient repair of micro-precision conductive line defects.

The present invention relates to the field of battery technology, and in particular to a negative electrode material and a preparation method thereof, a negative electrode sheet and a battery. The negative electrode material of the present invention comprises a MOFs-based composite material and graphite, wherein the inorganic metal center of the MOFs-based composite material is Fe, and the ligands are terephthalic acid and phosphomolybdic acid; the MOFs-based composite material has an octahedral structure; and the mass ratio of the MOFs-based composite material to the graphite is (1-50):100. The present invention converts the MOFs-based composite material MIL-88B-PMo 12 Compounded with graphite, a negative electrode material with high energy density and good fast charging capability is obtained.

The invention belongs to the technical field of novel separation membrane materials, and discloses an ionic covalent organic framework membrane as well as a preparation method and application thereof. An amine monomer and an aldehyde monomer are respectively dissolved in water and an organic solvent, and the continuous defect-free ionic covalent organic framework membrane is formed by in-situ growth on the surface of a carboxylated porous support base membrane through a limited interface polymerization method. And the membrane structure and the separation performance can be optimized by regulating and controlling the monomer concentration and the reaction time. The preparation process is simple, convenient and controllable, the prepared membrane is applied to pervaporation butanol-water separation, high permeability and high selectivity are shown, and good long-term operation stability is achieved. In addition, the prepared membrane can also be applied to separation of other types of alcohol-water and separation of pervaporation salt-water, and has good universality application.

The present invention discloses a high-frequency, low-loss amorphous soft magnetic composite film material and a preparation method thereof. The soft magnetic composite material is in the form of a composite film and relates to the technical field of magnetic electronic materials. First, amorphous soft magnetic powder of a certain particle size is pre-treated and then insulated and coated. It is mixed with an appropriate amount of resin and an auxiliary agent to form a slurry, and then cast into an amorphous composite film and dried. The prepared magnetic composite film can be laminated into a whole in multiple layers or used alone. The amorphous composite film prepared by the casting method of the present invention has a stable magnetic permeability greater than 10 at 1MHz to 200MHz and a loss angle less than 0.08, and can be used in high-frequency electromagnetic shielding, inductor devices, wave absorption and other fields.

The invention discloses a method for photoinduced demethylation of anisole, which belongs to the field of pharmaceutical compound synthesis. The method provided by the invention uses ferric chloride as a catalyst for the main reaction, reacts under the condition of air or oxygen, and obtains a demethylated product under illumination. The catalytic efficiency of the catalyst is high, and the yield of the product obtained by dealkylation is also high, which greatly reduces the experimental cost and is suitable for the synthesis and amplification of later compounds. The method provided by the invention does not have expensive metal catalysts and oxidants, has the characteristics of high efficiency, green environmental protection, safety, saving experimental costs, and simple operation and post-processing.

The invention discloses a method for carrying out olefin hydroformylation reaction by using an ionic phosphine-containing polymer supported catalyst, the metal of the selected catalyst is one or more than two active metal components selected from Rh, Co, Ir, Ru, Pt, Pd and Fe, and is supported on an ionic polymer; the ionic polymer is formed by self-polymerizing a phosphine-containing cation template with vinyl or copolymerizing the phosphine-containing cation template with other components, and then bonding with triphenylphosphine tri-m-sodium sulfonate (TPPTS) with negative charges. The ionic phosphine-containing polymer supported catalyst provided by the invention can be used in reaction systems of hydroformylation reaction, hydroesterification reaction, alcohol carbonylation, hydromethylamination and the like of olefin, and compared with a traditional TPPTS catalyst, the ionic bond is more stable, and the ionic phosphine-containing polymer supported catalyst has higher catalytic activity and better stability.

The invention discloses a method for preparing polyethylene glycol dicarboxylic acid, comprising the following steps: polyethylene glycol is dissolved in deionized water, palladium / platinum / carbon composite catalyst, hydrogen peroxide are added, liquid caustic soda is added to adjust pH to 9-11, and the temperature is reacted under the condition of 40-95 ° C, so that polyethylene glycol is converted into polyethylene glycol dicarboxylate, and the polyethylene glycol dicarboxylic acid is obtained through post-treatment; the palladium / platinum / carbon composite catalyst is made of the following mass percentage components: 2-5% palladium chloride, 1-4% platinum chloride, 0.2-0.6% bismuth chloride, 0.3-0.6% cobalt nitrate, 90-96.5% activated carbon. The method for preparing polyethylene glycol dicarboxylic acid provided by the invention has simple process, fast reaction rate, high yield, easy control of production process, high product purity, stable quality, green production process, fast reaction speed, low energy consumption, and more economical production process.

The application discloses a method for in-situ encapsulating enzyme by lignin. The pH of industrial lignin water dispersion is adjusted to above 10.0 to dissolve the industrial lignin, and the industrial lignin solution is obtained after filtering and removing impurities. Then the pH of the industrial lignin solution is adjusted to 5-9.5, and enzyme protein is added to obtain a mixed solution. The pH of the mixed solution is adjusted to 3.0-4.0 again, so that the industrial lignin and the enzyme protein are co-precipitated. After separating the precipitate, drying is performed to obtain the immobilized enzyme. The application uses the adsorption capacity of lignin to enzyme and the property of alkali-soluble acid-extractable of lignin to immobilize the enzyme with low pH sensitivity, so that the encapsulation rate of the enzyme is improved, and the activity of the immobilized enzyme is better preserved. The application provides a new method for in-situ encapsulating enzyme protein, and has a positive significance for promoting the development of lignocellulose bio-refining and green bio-manufacturing.

The invention discloses a method for photoinduced N-alkylation, and belongs to the field of pharmaceutical compound synthesis. The method provided by the invention uses ferric chloride as a catalyst for a main reaction, performs a reaction under the condition of air or nitrogen, and obtains a dealkylation product under light irradiation at room temperature. The catalyst has high catalytic efficiency, and the yield of the product obtained by dealkylation is also high, which greatly reduces the experimental cost and is suitable for the synthesis and amplification of later compounds. The method provided by the invention has no expensive metal catalyst and oxidant, has the characteristics of high efficiency, green environmental protection, safety, saving experimental cost, and simple operation and post-processing.

This invention is entitled "A Method for Recycling High-Magnetic Lithium Iron Phosphate," belonging to the field of lithium-ion battery cathode material technology. The technical problem to be solved is to provide a method for recycling substandard high-magnetic lithium iron phosphate with a magnetic content of 1-300 ppm. This method is environmentally friendly, simple, and can be mass-produced, and the recycled product meets battery performance requirements. The key technical points include the following steps: (1) First, high-magnetic lithium iron phosphate is ground and reacted with phosphoric acid, then lithium source, iron source, phosphorus source, and additives are added sequentially for mixing, grinding, spray drying, and sintering under an inert atmosphere to obtain a lithium iron phosphate precursor; (2) The lithium iron phosphate precursor, carbon source, and additives are mixed for secondary grinding, spray drying, sintering under an inert atmosphere, and graded crushing to obtain recycled lithium iron phosphate. The recycled lithium iron phosphate has a magnetic content of <1 ppm and exhibits high compaction density and electrochemical performance.

The invention discloses a method for preparing graphene-like nanoparticles by using metal magnesium to assist mixed salt and application of the graphene-like nanoparticles. Cotton straw biomass carbon is used as a raw material, potassium carbonate and sodium carbonate are used as activators, gas carbon monoxide released in the heating process and alkaline earth metal potassium and sodium intervene in the activation process, then cross-linked sp3 carbon atoms in an amorphous carbon-containing precursor release graphite microcrystals, then the graphite microcrystals are recrystallized to form a graphene layer, and the graphene layer is formed. And finally, the graphene-like nanosheet is formed. According to the method, graphene-like nanosheets are prepared on the basis of mixed salt activation, and magnesium powder, potassium carbonate and sodium carbonate are added and mixed for co-activation on the basis. At high temperature, magnesium powder can promote decomposition of mixed salt, potassium and sodium in the salt can be released more quickly to react with biomass carbon, and formation of graphene-like nanosheets is promoted. The obtained graphene-like nanosheet has a relatively large specific surface area, and shows relatively high specific capacitance, excellent cycling stability and rate capability when being used as a supercapacitor electrode material.

The invention provides a method for removing aluminum trichloride from crude titanium tetrachloride. The method comprises the following steps: (1) carrying out gradient cooling on the crude titanium tetrachloride containing aluminum chloride; and (2) filtering the crude titanium tetrachloride obtained in the step (1) through a filter provided with a sand core filter plate, and separating the crystallized aluminum trichloride from the crude titanium tetrachloride. The method has the beneficial effects that the problems of high cost, complex operation, long period and reduction of titanium yield of the existing method for removing aluminum from crude titanium tetrachloride are well solved, the mass fraction of aluminum chloride in crude titanium tetrachloride can be reduced to 10 <-5 > or below, the whole process is environment-friendly and pollution-free, the operation is simple, the cost is saved, the titanium loss is less, and the method is suitable for industrial production. The impurity removal method is easy to industrialize.

The invention belongs to the technical field of resource utilization of industrial solid wastes, and provides a method for resource utilization of electrolytic manganese residues. The method comprises the following steps: mixing the electrolytic manganese residues and an alkali activator, roasting, and after roasting, carrying out ball milling to obtain activated electrolytic manganese residues; the method comprises the following steps: mixing fly ash and an alkali activator, roasting, and after roasting, carrying out ball milling to obtain activated fly ash; and mixing the activated electrolytic manganese residues, the activated fly ash, a nano material, cement and water to obtain the electrolytic manganese residue-based concrete, thereby completing resource utilization of the electrolytic manganese residues. The method disclosed by the invention is simple and environment-friendly, resource utilization of the electrolytic manganese residues is realized, efficient utilization of the fly ash is also realized, and the electrolytic manganese residue-based concrete with excellent performance is prepared.