95results about How to "Meet the requirements of large-scale industrial production" patented technology

The invention relates to a method for preparing a multilayer graphene-carbon material. The method provided by the invention is characterized in that a home-made amorphous carbon material is transformed into the multilayer graphene-carbon material at a low temperature under normal pressure; and concretely, the method provided by the invention comprises the following steps that metal elements are doped into the home-made amorphous carbon material; and the home-made amorphous carbon material is transformed into the multilayer graphene-carbon material at a temperature of 500 to 1000 DEG C in the presence of an elemental metal sodium as a catalyst and a medium in the nitrogen or argon atmosphere. The method provided by the invention realizes that amorphous turbostratic carbon is transformed into multilayer graphene at a low temperature under normal pressure, inhibits the increasing of the number of piled carbon layers in carbon atom rearrangement, and prevents that a large amount of the multilayer graphene obtained in structure rearrangement is transformed into graphite crystals. The multilayer graphene-carbon material obtained by the method has wide application prospects in the fields of sensors, capacitors, catalysis and energy storage.

The invention relates to a method and catalyst for preparing ethyl furfuryl ether by liquid-phase hydrogenation of furfural and a preparation method of the catalyst. Active metal Cu is supported on asilica-containing carrier by adopting an ammonia distillation method, and the catalyst is the metal Cu supported by the silica-containing carrier, wherein the supporting capacity of the copper is 5-45wt%. The silica-containing carrier is one or more selected from mesoporous SiO2, MCM-41, SBA-15 and silica sol. Absolute ethyl alcohol is taken as a solvent, and furfural and the catalyst are added,wherein the mass ratio of the furfural to the absolute ethyl alcohol is (0.1-1):1, and the mass ratio of the catalyst to the furfural is (0.02-0.1):1; and a reaction is carried out for 0.5-24 hours under the condition that the hydrogen pressure is 0.5-15 MPa and the reaction temperature is 80-250 DEG C to obtain the ethyl furfuryl ether. The catalyst disclosed by the invention has relatively highcatalytic activity. When furfural is used as a raw material to synthesize ethyl furfuryl ether in one step, the reaction conditions are mild, and requirements of large-scale industrial production aremet.

The invention relates to a method for preparing mesoporous silicon dioxide, the method is characterized in that mercapto-vinyl can be used for a free radical addition reaction, organo-silicone containing a mercapto group and polybutadiene block of triblock copolymer of styrene-butadiene-styrene are reacted, an organo-siloxane modified styrene-butadiene-styrene triblock copolymer can be obtained, then the organo-siloxane modified styrene-butadiene-styrene triblock copolymer is carried out a sol-gel reaction with a silicon source under the acidic or alkaline condition to form gel, the mesoporous silicon dioxide is obtained after cracking the gel. Compared with the prior art, the mesoporous silicon dioxide material has the average pore diameter of 5-18nm, the pore volume of 0.24-0.30 cm<3>/g, the specific surface area of 418-480 cm<2>/g, and has the advantages of cheap raw material and easy raw material acquisition, mild reaction condition, simple and high efficient preparation process, safety and environmental protection, and is convenient for large scale production.

The invention discloses a preparation method of paecilomyces lilacinus spore powder. The method comprises the following steps of: (1) preparing a paecilomyces lilacinus liquid fermentation broth; (2) recovering conidia from the paecilomyces lilacinus liquid fermentation broth; and (3) drying the recovered paecilomyces lilacinus conidia to obtain the paecilomyces lilacinus spore powder. According to the invention, the technological parameters for preparing paecilomyces lilacinus spore powder are screened and optimized to obtain optimal technological parameters for preparation, thus the yield and product quality of paecilomyces lilacinus spores are effectively improved. The preparation method of paecilomyces lilacinus spore powder, disclosed by the invention, has the advantages of high recovery rate, high spore content, high live spore rate, low water content and the like, and conforms to the requirements of large-scale industrial production.

The invention discloses a method for comprehensively utilizing waste tobacco leaves. The method comprises the steps of after using an organic solvent to extract the waste tobacco leaves, using a stepwise solvent extraction method to obtain condiments, chlorogenic acid, and precipitates of a nicotine extract and rutin; obtaining high-purity nicotine, condiments, solanesol, rutin and chlorogenic acid by using separation and purification means of solvent extraction, column chromatography, crystallization and the like; fermenting tobacco leaf residues of the extracted effective components to prepare a bacterial manure. The method provided by the invention can realize high-value utilization of effective components of multiple waste tobacoo leaves, is simple in process and low in cost, and meetsthe large-scale industrial production requirement; the yield and the purity of the effective components are high, the condiments do not contain the nicotine, and microbial fertilizer is short in production period and high in viable count, so that the method is a tobacco leaf comprehensive utilization technology with high efficiency, good economy and environment friendliness.

The invention discloses a preparation method of N-alkyloxy oxalyl alanine alkyl ester, comprising the steps of: subjecting pyruvic acid alkyl ester (2) and oxamic acid alkyl ester (3) to a reductive amination reaction so as to obtain a target compound (1) directly in the following reaction route; or, conducting a dehydration reaction to pyruvic acid alkyl ester (2) and oxamic acid alkyl ester (3) first so as to obtain an intermediate Schiff base (4), which then undergoes a reduction reaction, thus obtaining the target compound (1), with a following reaction route; wherein, R1 and R2 respectively represent methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl or t butyl. With the advantages of simple operation, short preparation period, low energy consumption, strong industrial feasibility and the like, the preparation method provided in the invention can satisfy the requirements for large-scale industrial production.

The invention discloses recombinant escherichia coli for high yield of cytidine monophosphate and application of the recombinant escherichia coli. According to the invention, cytidine kinase gene is obtained by cloning from a cytidine monophosphate production strain; crude enzyme liquid obtained by crushing recombinant bacteria has good catalytic activity and stability; cytidine, adenosine triphosphate (ATP) and Mg < 2 + > are added, the reaction system is simple, the conditions are mild, the period is short, byproducts are fewew, the method is clean and free of pollution, the application is asimple, rapid and efficient production way, and the conversion rate of substrate cytidine and ATP reaches 85% or above.

A fungus growing method of Qianliang tea, and Jinhua Qianliang tea relate to a fungus growing method of Qianliang tea, and a product thereof. The fungus growing method is specially characterized by controlling moisture content of Qianliang tea at 16%-22% in stepping; cooling for 0.5-2 days, and then vertically putting in a closed Qianliang tea fungus growing and drying room with top covering iron tiles and a controllable ventilation device at the temperature of being less than or equal to 35DEG C and humidity of being less than or equal to 85%; when performing fungus growing for 1.5 to 2 months, then turning round and performing fungus growing for 0.5-1.5 months, ventilating and drying until the moisture rate reaches 10% or below. The fungus growing method of Qianliang tea has the advantages of being capable of leading the traditional high-density Qianliang tea to grow fungus, conducting fungus growing and drying in the same field, saving transportation cost, simply controlling the fungus growing, and being low in energy consumption, uniform for fungus growing, free from mildew and heartburn phenomena, and high in the rate of finished products. The fungus growing method of Qianliang tea breaks through the inherent concept that eurotium cristatum can be grown normally only under the condition of sufficient oxygen, and the traditional Qianliang tea cannot generate Jinhua fungus, and has unexpected technical effects.

The invention relates to a chick embryo polysaccharide capsule preparation and a preparation method thereof. The chick embryo polysaccharide capsule preparation is a small-dosage medicinal preparation; each capsule contains 10mu g of chick embryo; the preparation contains the following auxiliary materials in percentage by weight: 95-99% of a filler, 0-10% of an adhesive and 0-5% of a lubricant. The preparation method comprises the steps of filling powder into the capsule directly and filling the powder into the capsule after being pelletized. The chick embryo polysaccharide capsule preparation provided by the invention is good in mobility, uniform in content, stable in preparation property, simple in production process and good in reproducibility, and can meet the requirements of large-scale industrialization.

The invention discloses a preparation method of a nickel-cobalt-tungsten polysulfide bifunctional catalyst with a core-shell spherical structure. The method comprises the following steps: firstly, dissolving a cobalt salt, a nickel salt and glycerol in a specific solvent, then putting a mixed solution into a stainless steel high-pressure reaction kettle taking polytetrafluoroethylene as a lining,carrying out heating reaction for a period of time, and then carrying out centrifugal drying to obtain a nickel-cobalt glycerol precursor; and carrying out tungsten doping and vulcanization treatmenton the precursor, ammonium tungstate and thioacetamide under a solvothermal reaction condition to finally obtain the quaternary tungsten sulfide doped cobalt nickel sulfide Co9S8-Ni3S2@WS2 catalyst. The preparation method has the advantages of easily available raw materials, low cost, simple process, short reaction time, unique catalyst morphology, high specific surface area and excellent electrocatalytic performance, can be applied to dye-sensitized solar cells, has photoelectric efficiency of 9.67%, and has good application prospects in the field of water electrolysis hydrogen production.

The invention discloses a combined electrolysis cathode plate which comprises an electrolysis cathode plate and a conductive connecting piece, and is characterized in that the electrolysis cathode plate comprises an electrolysis mother plate, a plurality of electrolysis unit plates and connecting mechanisms thereof, wherein, the electrolysis mother plate is in a plane structure, and the upper end of the mother plate is connected with a conductive connecting structure; the connecting mechanism is arranged on the surface of the electrolysis mother plate; the electrolysis unit plates are frame plates which are applicable to paste application and removing devices with surface area smaller than that of the electrolysis mother plate; the electrolysis unit plates are movably arranged on the electrolysis mother plate by the connecting mechanisms, to form a large removable combined electrolysis cathode plate. The combined electrolysis cathode plate of the invention can not only meet the requirements for the mechanical operation during paste application and removing processes, but also realize wet electrolysis mass industrialized production, improve production efficiency, improve current efficiency and reduce power consumption.

The invention discloses a tetravalent platinum pharmaceutical preparation, and a preparation method and application thereof. The tetravalent platinum pharmaceutical preparation comprises a prodrug andan amphipathic high molecular material. The prodrug has a structural formula (I). Dynamic light scattering and a transmission electron microscopy show that nanoparticles are uniformly distributed andare about 40-60 nm; an in vitro cytotoxicity test shows that the nanoparticles coated with platinum prodrug can inhibit proliferation of tumor cells (MDA-MB-468 and HT-29) obviously. An in vivo experiment shows that compared with a cis-platinum injection liquid, the cis-platinum nano pharmaceutical preparation has an effect of inhibiting subcutaneous tumor MDA-MB-468 on the basis of reducing thesystemic toxicity and has good market prospect and clinical application value.

The invention discloses an organic silicon resin modified heat-resistant back coating material, which is prepared from the following components in parts by mass: 2 to 4 parts of methyl MQ silicon resin, 180 to 200 parts of simethicone, 18 to 20 parts of methacryloyloxypropyltrimethoxysilane, 6 parts of dibutyltin dilaurate and 5800 to 6800 parts of organic solvent. According to the using method of the organic silicon resin modified heat-resistant back coating material, a transmission roller drives a PET base film to keep uniform motion, and the surface of the PET base film is uniformly coated with the organic silicon resin modified heat-resistant back coating material; and the redundant organic silicon resin modified heat-resistant back coating material on the surface of the PET base film is scraped off, the release layer and the ink layer are coated, and drying is carried out to finally obtain the finished product of the thermal transfer ribbon. The production process is simple, the raw material cost is low, the cost is considered while the heat resistance of the thermal transfer ribbon is improved, and the large-scale industrial production requirement of a factory is met.