930results about How to "High industrial application value" patented technology

The invention relates to a metal-organic framework material for methane adsorption separation and a preparation method thereof. The metal organic framework material is prepared by reaction of at least a metal compound and at least one organic ligand, wherein the metal is one or more selected from Li, Mg, Al, Fe, Co, Ni, Cu, Zn, Mn, Zr, La and Sm, and the organic ligand is one or more selected from single or multidentate organic compounds containing nitrogen, oxygen or sulfur atom. The material has advantages of simple preparation process, high yield, easily available raw materials, mild reaction conditions; besides, the material has stable self properties and porous structure, and is especially suitable for separation of low-quality methane and purification process of high-concentration methane.

The invention relates to a perovskite solar battery and a preparing method thereof. The perovskite solar battery comprises a transparent electrode, a hole transmission layer, a perovskite light absorption layer, an electronic transmission layer and a metal electrode. The hole transmission layer comprises at least one of PEDOT: PSS, P3HT, PTAA, PThTPTI, metallic oxide and graphene oxide. The electronic transmission layer comprises at least one of 58 pi-electronic fullerene PCBM, 56 pi-electronic fullerene OQMF, 54 pi-electronic fullerene OQBMF, PFN, PEIE, ZnO, TiO2, doped or modified ZnO or TiO2. The perovskite solar battery is high in energy exchange efficiency and low in cost and can be produced on a large scale, and the preparing method is simple in technology.

This invention discloses a polymer compound membrane and its preparation method, in which, the method includes: mixing strengthening bodies of a matrix film and inorganic nm materials in an organic solvent to get a uniform slurry to be coated on both sides of a non-woven cloth to get a polymer compound membrane, in which, said strengthening bodies are selected from the following three: 1, an organic monomer and its related initiator, 2, two or more than two polymers, 3, organic monomers and their related initiators and two or more than two polymers, 4, organic monomers and two or more than two polymers.

The invention relates to a method for improving the performance of a light absorption layer of a perovskite solar cell. The method includes the steps that an additive is added into a reactant of perovskite to form a perovskite precursor solution; then a base coated with an electron transport material or a hole transport material is coated with the precursor solution in a rotating mode, and a perovskite light absorption layer film is formed after thermal treatment. The additive comprises one or more of CnH2n+1NH3B and an AB compound, wherein n is equal to 0-3, A is selected from monovalent metal, and B is F or C1 or Br or I. The light absorption layer, prepared through the method, of the perovskite solar cell enables the battery efficiency to be increased to over 10 percent from less than 6 percent. The method is simple and effective, simplifies the preparation process, and can save production cost. Therefore, the method for improving the performance of the light absorption layer of the perovskite solar cell has extremely high industrial application value.

The invention relates to the field of semiconductor electronic materials, and in particular relates to a silver nanowire doped conductive silver colloid and a preparation method thereof. The raw materials of the silver nanowire doped conductive silver colloid provided by the invention comprise the following components in percentage by weight: 25-60% of micrometer silver powder, 5-30% of silver nanowires, 20-50% of epoxy resin, 1.6-4% of curing agent, 5.8-9.2% of dissolvent, 0.4-1.6% of accelerant, 0.04-0.16% of toughening agent and 0.8-2.4% of additive. The conductive silver colloid is prepared by mixing and doping single-crystal silver nanowires and silver granules, thus, the total silver doping amount is reduced to 35-45%, and the conductive silver colloid has a favorable conductive effect, high shear strength, low working temperature and good ageing-resistant performance, and the cost of the conductive silver colloid is reduced. The silver nanowire doped conductive silver colloid can be widely applied to the fields of solar cell (film, crystal silicon) conductive colloids, conductive colloid LED (Light-Emitting Diode) package and the like.

The invention belongs to the technical field of mesoporous composite materials, and particularly relates to a three-dimensional interconnected hierarchical-structured zeolite molecular sieve material and a preparation method thereof. The method comprises the following steps of: self-assembling anionic and cationic surfactants, serving as primary constitutional units, in solution phase to form a secondary constitutional unit; self-assembling in solution to be compounded into amphipathic block copolymer; then, self-assembling in the solution by taking the amphipathic block copolymer as a template agent and by using a structural guide agent and inorganic silicon to obtain a silicon dioxide / surfactant / template agent composite material; and finally, calcining to remove the surfactant and the template agent to obtain the hierarchical-structured mesoporous zeolite molecular sieve material consisting of interconnected mesopores, micropores and macropores. The material has higher specific surface area and stronger hydrothermal stability, and has a broad application prospect in the aspects of petrochemical industry, heavy oil catalysis cracking, biological separation, adsorption and the like. The material obtained in the invention has the advantages of superior performance, simple synthesis method and readily available raw material and is suitable for industrial production.

The invention belongs to the technical field of separation membranes, and relates to a preparation method and application of a molecular sieve / organic composite infiltration, vaporization and separation membrane. The preparation method comprises the following steps of: firstly adopting a hydrothermal method to prepare nano-level molecular sieve; putting the synthesized nano-level molecular sieve in a solvent, and dispersing the molecular sieve into uniform molecular sieve suspending liquid through ultrasound, wherein the mass fraction of the molecular sieve in the suspending liquid is 5-15%; uniformly coating the molecular sieve suspending liquid on an organic supporting body; drying the organic supporting body at the temperature of 20-60 DEG C to form a molecular sieve membrane; and repeating the coating for 2-4 times. Surface modification is performed on the organic supporting body by adopting methods such as plasma induction, silane coating and the like to modify the surface hydrophily. The method can be used for preparing a large-area molecular sieve / organic composite membrane; a prepared membrane can be assembled into a spirally coiled component; and the preparation method is beneficial for industrial magnification, and has a higher industrial application value. A better separation effect can be achieved when the prepared molecular sieve / organic composite membrane is used for the infiltration and vaporization of an organic water solution system.

The invention relates to a thorium separation and purification method and in particular relates to an application of a neutral phosphamide extraction agent shown as a general formula I in the specification for extracting and separating thorium, as well as a method for extracting and separating thorium by using the neutral phosphamide extraction agent.

The invention relates to an integrated solar battery based on a perovskite solar battery and a bulk heterojunction solar battery and a preparation method thereof. The integrated solar battery comprises a transparent electrode, a hole transport layer, a perovskite light absorbing layer, an organic substance blending layer, a random hole block layer and a metal electrode in sequence from the bottom to top. Through preparing the perovskite solar battery and the bulk heterojunction solar battery into the integrated battery, the integrated solar battery based on the perovskite solar battery and the bulk heterojunction solar battery overcomes the disadvantages of narrow light absorbing range of the perovskite solar battery and weak visible light region absorption of the narrow-gap bulk heterojunction solar battery, improves the sunlight use range and improves the energy conversion efficiency. The integrated battery has the similar features to a parallel battery, the conversion efficiency is capable of breaking through the theoretical boundary of the energy conversion efficiency of the single-junction solar battery, and the application prospect is good.

The invention relates to chemical technical field, in particular to a method for using magnesia catalyst to catalyze and oxidize cyclone to synthesize lactone. The invention uses some nanometer sheet magnesia compound as catalyst, uses mixture of cyanobenzene and 1, 4-dioxane at a certain proportion as solvent, at a special reaction temperature, to catalyze and oxidize cyclone to synthesize lactone compound. The invention uses commercial cyclopentanone, cyclohexanone and adamantaneketone as raw materials, at mild condition, to reach the total yield of lactone compound more than 90%. The invention uses hydrogen dioxide water solution as oxidant, to eliminate the environment pollution of traditional oxidation process as peroxyacid, to realize environment-friend catalysis conversion. The invention has low cost, which can be used for industrialized lactone compound production.

The invention discloses a method for preparing gamma-valerolactone by acetylpropionic acid catalytic hydrogenation. Through high efficiency catalysis of levulinic acid hydrogenation based on a loaded ruthenium catalyst under mild conditions, gamma-valerolactone is prepared. The method has a levulinic acid conversion rate of 100% and gamma-valerolactone selectivity of 99.9%. The loaded ruthenium catalyst has a low active metal load capacity (less than 1.5w.t.%) and high activity (TOF, 7676h<1>), has good water and acid resistance and is suitable for an intermittent reactor and a continuous fixed bed reactor. The method solves the problem that the existing gamma-valerolactone preparation method needs a high temperature and high pressure and utilizes organic acids and bases and an organic solvent, improves preparation method economy and safety, utilizes a small amount of a catalyst, realizes catalyst recycle, has a high product yield and product separation easiness, and has a latent industrial application value.

The invention relates to a preparation method of an electronic-grade polyimide film with low linear expansion coefficient. The method comprises the following steps that (1) the step-by-step condensation polymerization technology is used for obtaining polybasic block copolymerization polyamide acid glue solutions comprising one or more bar-shaped rigid chain sections containing para-benzene or biphenyl and one or more soft chain sections containing ether bonds or silicon-oxygen bonds and the like; (2) polyamide acid comprising one or more bar-shaped rigid chain structures containing para-benzene or biphenyl and polyamide acid comprising one or more soft chain structures containing ether bonds or silicon-oxygen bonds are independently compounded, and the two or more polyamide acid glue solutions different in rigidity and softness are mixed and compounded; (3) the compounded glue solutions are subjected to filtration, vacuum defoamation, casting filming, bidirectional stretching, chemical amidization or thermal amidization, infrared complete amidization, high-temperature thermal forming processing, corona processing and a reeling process, and therefore the electronic-grade polyimide film with the thickness being 7.5-125 micrometers, the linear expansion coefficient being 5-18ppm / DEG C, and good physical mechanical performance is obtained.

The invention discloses probiotic microcapsules. The probiotic microcapsules are prepared by taking whey protein as a microcapsule coating material and probiotic as a capsule core, mixing the whey protein and the probiotic and drying the mixture by using spray. The whey protein is mixed with the probiotic by means of the gel forming property of the whey protein, and the mixture is dried by using the spray to form the microcapsules; and therefore the aim of storing the probiotic for a long time is fulfilled and the harm on a thallus caused by high temperature and drying is prevented. Compared with a conventional freeze drying method, the preparation method reduces production cost and is suitable for industrial production.

The invention belongs to the technical field of the material science, in particular to a low-temperature sintering microwave dielectric ceramic material with a high Q value and a preparation method thereof. The low-temperature sintering microwave dielectric ceramic material with a high Q value has the raw material formula composition of Li2(Mg1-xZnx)Ti3O8 and a sintering assistant, wherein x is more than or equal to 0 and less than or equal to 1; and the sintering assistant accounts for 0.5-5wt% of Li2(Mg1-xZnx)Ti3O8 and is one or more of Li2O-B2O3-SiO2 glass powder, ZnO-B2O3-SiO2 glass powder, BaO-O-B2O3-SiO2 glass powder and CuO-Bi2O3-V2O5 sintering powder. The low-temperature sintering microwave dielectric ceramic material provided by the invention has the advantages of low cost, smalladded sintering dose, high quality factor Qf value, simple preparation technology, good reproducibility and great industrial application value.

The invention discloses a preparation method of an ordered mesopore ZSM-5 molecular sieve. The preparation method comprises the following steps of: firstly preparing an ordered mesopore silicon oxide molecular sieve serving as a silicon source through an organic template method; and then transforming the ordered mesopore silicon oxide molecular sieve into the ordered mesopore ZSM-5 molecular sieve in situ by adopting a hydrothermal method. The ordered mesopore ZSM-5 molecular sieve disclosed by the invention is provided with ordered micropores with pore diameter being 0.2-2 nanometers and ordered mesopores with pore diameter being 2-50 nanometers and has wide application prospect in the fields of petrochemical industry, petroleum processing, coal chemical industry, and the like.

The invention relates to a manufacturing method of an electronic-grade polyimide film with low linear expansion coefficient. The method is characterized by comprising the steps that (1) the step-by-step condensation polymerization technology or the blending compounding technology is used for obtaining two or more polyamide acid glue solutions comprising rigid structures and soft structures at the same time and are different in rigidity and softness; (2) ultrafine inorganic whiskers, like zinc oxide whiskers, silicon carbide whiskers and zirconium tungstate whiskers, which are subjected to surface organic modification already and / or nanoparticle materials are smashed and cavitated through high-energy-density supersonic waves, and then the functional fillers are compounded with polybasic polyamide acid in an in-situ micro-nano mode; (3) the compounded glue solutions are subjected to filtration, vacuum defoamation, extrusion casting filming, chemical amidization or thermal amidization, infrared complete amidization, high-temperature thermal forming processing, corona processing and a reeling process, and therefore the electronic-grade polyimide film with the thickness being 7.5-125 micrometers, the linear expansion coefficient being 5-18ppm / DEG C, and good physical mechanical performance is obtained.

The invention discloses a technology of a microwave heating synthesis method of fiber carbamate; the method is that: firstly, the fiber is soaked in carbamide aqueous solution for completely adsorbing the carbamide, the fiber / carbamide even mixture is obtained by filtering and drying, and then the fiber / carbamide mixture is placed in a microwave oven for being heated, thereby obtaining the fiber carbamate. The synthesis technology of the fiber carbamate provided by the invention has no solvent pollution, organic solvents and any catalyzers do not need, the reacting time is speed, and the energy consumption is low. The synthesized fiber carbamate products has good dissolubility in 6 to 10 wt% of NaOH aqueous solution within the temperature range of -10 to 5 DEG C, and the concentrated solution which is stable, transparent and is suitable for industrial spinning and membrane manufacturing can be prepared.

A process for preparing the spinning dope from the fibrous straw and stalk includes such steps as steam exploding, cyclic countercurrent extracting in water to remove the most of soluble hemicellulose, extracting lignin in the aqueous solution of alcohol, filtering to obtain the alcohol solution of lignin and coarse cellulose, grinding, removing short fibers, bleaching to obtain milk, mixing it with urea, reacting in inertial solvent to obtain cellulose aminoformate, and dissolving it in NaOH solution.

The invention discloses a magnetic-concentrating-type consequent-pole cursor permanent magnet motor, which comprises a primary core and a secondary core, wherein a plurality of open slots are formed in the primary core; armature windings are arranged in the open slots of the primary core; the secondary core and the primary core are arranged at an interval and can oppositely move; Halbach permanent magnets are arranged in notches of the open slots of the primary core, thereby forming a Halbach (Halbach) permanent magnet array; a plurality of open slots which are arranged at intervals are formed in the surface, relative to the primary core, of the secondary core and permanent magnets are arranged in the open slots, thereby forming an excitation permanent magnet array; and the magnetization direction of the Halbach permanent magnet array is matched with that of the excitation permanent magnet array. Through comprehensive application of a consequent-pole structure and a Halbach array, the air-gap flux density of the motor is significantly strengthened, the air-gap electromagnetic power transmission capacity of the motor is improved, the electromagnetic properties of the counter electromotive force, the thrust density, the power factor and the like of the motor are improved, and reduction of the volume of the motor, improvement of the acceleration performance of the motor and reduction of the capacity of a frequency converter are facilitated.

The invention relates to a method for synthesizing a NaA molecular sieve membrane. A seed crystal coating mode of combining the coating and the dipping of seed crystal is used for the synthesis of the molecular sieve membrane. Firstly, a supporting body is polished by sand paper and is dried; a seed crystal paste is coated on the surface of the supporting body to remove the possible defects on the surface of the supporting body; secondly, the seed crystal is precoated by a lifting and dipping method; and finally the NaA molecular sieve membrane is synthesized by a hydrothermal synthesis method. The NaA molecular sieve membrane synthesized by the method has continuous and compact surface, excellent separation performance and good repeatability and is suitable for scale preparation.

The invention relates to a titania porous micro tube optical catalyst modified by silver for degrading fenol in water and relative preparation. The inventive catalyst is TiO2 porous micro tube modified by silver with specific structure composed from direct deposit method, that using titanic chloride as titanium source, directly hydrolyzing and depositing, in the condition with some dispersers, to be filtered, washed, dried, baked and activated to obtain final TiO2 optical catalyst modified by silver. The inventive catalyst has specific structure, integral appearance, and uniform aperture, thereby improving the ability for degrading fenol, with high activity in optical catalysis, the ability for degrading fenol into water and carbon dioxide, and wide application.

The invention discloses a reaction technology for converting an oxygen-containing compound into aromatic hydrocarbons by using a moving bed process. The technology comprises the following steps: preheating the oxygen-containing compound and a diluent, carrying out mixing preheating, reacting in the presence of an aromatization catalyst in an aromatization reactor in order to generate a mixed effluent, sending the mixed effluent to a cooling separation unit, carrying out dehydration and oxide removal, separating to obtain main products comprising benzene, toluene, xylene and other byproducts; circulating the other byproducts, benzene and toluene to the aromatization reactor as return hydrocarbons for a reaction; removing carbon-deposited aromatization catalyst particles from the aromatization reactor when the conversion rate of the oxygen-containing compound under the catalyst in the aromatization reactor is lower than 99%, regenerating in a regenerator, and adding the regenerated catalyst to the aromatization reactor. The technology improves the stability and the activity of the catalyst, and improves the selectivity of the aromatic hydrocarbons especially xylene through recycling product hydrocarbons.

The invention discloses a preparation method of a polypropylene capacitance film. The preparation method comprises the following steps of: (1) preparing a polypropylene material composite from the following components in parts by weight: 100 parts of polypropylene resin, 0.05-0.15 part of a photoinitiator, 3-5 parts of a cross-linking agent and 0.25-0.35 part of a hindered phenol antioxidant; (2) melting, plasticizing and extruding the polypropylene material composite by an extruder; (3) cooling a extruded melt body and casting into a sheet; (4) stretching the cast sheet in two directions into a film by using a bidirectional stretching equipment; (5) performing ultraviolet (UV) irradiation crosslinking on the stretched thin film; and (6) post-treating the irradiated thin film and reeling the thin film in a reeling machine to obtain a finished product. According to the preparation method of the UV crosslinked BOPP (biaxially-oriented polypropylene) capacitance film, the heat resistance and the breakdown strength of the polypropylene capacitance film are remarkably enhanced, the polypropylene capacitance film can meet the development demands of a strong-current capacitor market on advanced insulating thin film materials, and a new path is opened for high performance of the polypropylene capacitance film. Meanwhile the method is simple and easy to realize and has an extremely high industrial application value.

The invention discloses a long-chain internal olefin isomerization / hydroformylation homogeneous catalytic reaction method and a catalyst. According to the method, a rhodium-ruthenium bimetal complex is used as the catalyst, and the ligand adopts a quadridentate phosphine ligand. The catalytic system can be used for homogeneous internal olefin isomerization and hydroformylation reaction under the conditions of certain temperature and pressure. The method is suitable for long-chain internal olefins (>=C8) and internal olefins (<C8), and is a high-normal / isomeric ratio homogeneous bimetal-catalyzed reaction method.

The invention discloses a bacillus amyloliquefacien for degrading aflatoxin B1 in peanut meal, and belongs to the technical field of applied microbiology. According to the invention, a bacillus amyloliquefacien capable of significantly inhibiting the growth of Aspergillus flavus and efficiently degrading aflatoxin B1 can be obtained by screening and the content of aflatoxin B1 in detoxified peanut meal is lower than the national limited standard and achieves the safe feeding level after the bacillus amyloliquefacien is applied to moldy peanut meal. Furthermore, the detoxification mechanism of the strain is the degradation effect of extracellular metabolites, and generation of the active substance is of a non-induced type, which is an inherent attribute of the strain. The features of the strain provide the possibility for biocontrol of Aspergillus flavus and aflatoxin B1 in industries such as feed and foods and the strain has very high application values.

The invention relates to an application and method for extracting and separating uranium with an amino-containing neutral phosphine extracting agent. The formula is shown in the specification, wherein R1 and R2 are independently selected from C1-12 alkyl, R3 and R4 are independently selected from C1-5 alkyl and hydrogen, R5 and R6 are independently selected from C1-16 alkyl and hydrogen, and at most one of R5 and R6 is hydrogen. The amino-containing neutral phosphine extracting agent has good extracting and separating capacity to uranium in different acid media, the synthesis method is simple, chemical raw materials used for synthesis are simple and easy to obtain, cost is low, therefore, the extracting and separating cost of cerium can be effectively reduced, and high industrial application value is achieved. According to the method, liquid-liquid extraction and separation or solid-liquid extraction and separation is carried out on uranium in uranium-containing raw materials, the result shows that the purity of uranium obtained after extraction, washing and reextraction is 99% or above and the yield of uranium is 98% or above, and enrichment and purification of uranium are effectively achieved.

The invention discloses a method for producing saponin and organic acid by using turmeric, which belongs to the field of biological engineering and solves the problem that the conventional method for extracting turmeric saponin by using a turmeric raw material has large discharge amounts of waste water and waste slag and cannot effectively use turmeric starch. The method comprises the steps of turmeric saponin release, turmeric starch saccharification, fermentation medium preparation, organic acid fermentation, saponin enrichment and saponin preparation. By pretreating the turmeric raw material by using fermentation and membrane separation coupling, the method has the advantages of pollution-free production of the saponin and the organic acid, high turmeric saponin extracting rate, full utilization of the turmeric starch, little waste water amount and little production during turmeric saponin production, pollution-free process and great industrial utilization value in the turmeric industry.

The invention belongs to the field of hazardous waste treatment, and relates to a hazardous waste high-temperature melting microcrystal purification device and a tail gas purification method. Combustors and feeding openings are arranged on the side wall of a melting chamber. The combustor is connected with a gas pipeline and a high-temperature air preheater. A molten slag water quenching pool below the melting chamber is connected with a magnetic separator. A secondary air nozzle and a circulating flue gas nozzle are arranged on the lower portion of a secondary combustion chamber. An outlet ofa melting furnace is connected with a cyclone separator. The melting chamber on the lower portion is connected with a material return opening. An SNCR urea nozzle is arranged at an inlet of the cyclone separator, and an outlet of the cyclone separator is connected with a tail flue. A heat conduction oil economizer, the high-temperature air preheater and a medium-temperature air preahter are arranged in the tail flue. A flue gas outlet is connected with a cooling tower, a slaked lime and activated carbon sprayer, a cloth bag dust remover, a wet flue gas purification device, a flue gas heater,an SCR denitration device and a low-temperature air preheater. A waste liquid outlet of the wet flue gas purification device is connected with the cooling tower. The heat conduction oil economizer isconnected with the flue gas heater. The hazardous waste high-temperature melting microcrystal purification device is used for hazardous waste melting microcrystal purification.

The invention discloses an alcohol dehydrogenase mutant and an application thereof to synthesis of chiral biaryl alcohols, and belongs to the technical field of bioengineering. The alcohol dehydrogenase mutant has excellent catalytic activity and stereoselectivity and can be used for efficient catalysis for preparation of a series of R-configuration and S-configuration chiral biaryl alcohols. Alcohol dehydrogenase can be applied to synthesis of various chiral biaryl alcohol intermediates of antihistamine drugs by being coupled with glucose dehydrogenase or formate dehydrogenase. Compared withthe existing reports, a method for preparing the chiral biaryl alcohols from alcohol dehydrogenase through asymmetric catalytic reduction has the advantages of simple operation, high substrate concentration, complete reaction and high product purity, and has broad industrial application prospect.

The invention provides recombinant escherichia coli capable of efficiently expressing a semeglutide precursor. Two different leader peptides and enterokinase restriction enzyme cutting sites are designed and added at the front end of a semeglutide precursor to construct a fusion polypeptide structure, a coding gene of the optimized polypeptide structure is inserted into a pET-30a(+) expression vector to obtain a recombinant expression vector, the recombinant expression vector is transformed into escherichia coli BL21(DE3), and the recombinant engineering bacterium capable of stably and highly expressing the simeglutide precursor is obtained. The recombinant engineering bacterium disclosed by the invention not only can stably and highly express the semeglutide precursor, but also is particularly suitable for a high-density fermentation method, and the expression quantity of a target protein can be further improved.