44results about How to "Potential for industrial application" patented technology

An anti-corrosion composite layer includes a first anti-corrosion coating coated on a substrate, and a second anti-corrosion coating coated on the first anti-corrosion coating. The first anti-corrosion layer includes a plurality of first graphene nanosheets and a first carrier resin, wherein a surface of each the first graphene nanosheet has a first lipophilic functional group for chemically bonding to the first carrier resin, the first lipophilic functional group is selected from carboxyl, epoxy and amino. The second anti-corrosion coating includes a plurality of second graphene nanosheets and a second carrier resin, wherein a surface of each the second graphene nanosheet has a second lipophilic functional group for chemically bonding to the second carrier resin, the second lipophilic functional group is selected from hydroxyl and isocyanic acid group.

The invention discloses a bacillus subtilis BAV20120416 bacterial strain and a method for fermentation production of a D- ribose by the bacterial strain. The bacterial strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on April, 16th in 2012. The preservation number of the bacterial strain is CGMCC NO.6013. The bacterial strain is a bacillus subtilis transketolase deletion mutation strain, has the advantages that hereditary stability is good, spores are difficult to generate and the like, and is capable of accumulating more than 90g / L of the D-ribose in a fermentation medium with glucose and corn steep liquor as main raw materials. The D-ribose accumulated by the bacterial strain is about third more than that accumulated by a parent strain of the bacterial strain, wherein the parent strain is bacillus subtilis ATCC21360. The fermentation time is short and generally controlled to be about 50 hours which is one-third lower than the time in the prior art. Particularly, impurities are few. Residual sugar of final fermentation liquid is reduced to 0. The bacterial strain is particularly applicable to the requirements for medicine production.

The invention discloses a method for preparing 2-amino-4(3H)-quinazolinones. Specifically, a bimetallic cationic complex [Ln(CH3CHN)9]<3+>[(AlCl4)3]<3->.CH3CN is taken as a catalyst, a methyl 2-aminobenzoate compound and a carbodiimide compound are catalyzed for preparation of 2-amino-4(3H)-quinazolinones, wherein Ln represents a positive trivalent rare earth metal ion and is one selected from lanthanum, neodymium, samarium, gadolinium, erbium and ytterbium, CH3CN represents acetonitrile, and the chemical structural general formula of methyl 2-aminobenzoates and the general formula of carbodiimides are both shown in the description. The bimetallic cationic catalyst disclosed by the invention has high activity and has universality for multiple methyl 2-aminobenzoates and carbodiimides; the preparation method is short in reaction time, mild in reaction conditions, high in target product yield, and simple and controllable in preparation process, and has industrialization application potential.

The invention discloses a synthetic method of a sulfonic acid inner salt compound of amidine. According to the synthetic method, an o-amino benzene sulfonyl chloride compound and amide are adopted as reactants, and stirring reaction is carried out to compound and obtain the product, namely, sulfonic acid inner salt of amidine. The synthetic method disclosed by the invention is easy to operate, mild in reaction condition, and relatively good in yield, has universality for various amide, needs no reaction solvent, and causes little environmental pollution; the adopted raw materials are wide in resources and easy to get; the synthetic process is simple, controllable, and high in actual operability; the reaction is good in atom economy; the only by-product is hydrogen chloride gas which is easy to absorb or recycle; the synthetic method is suitable for large, medium and small scale synthesis, and has a potential for industrial application.

The invention discloses a method for preparing carbon nanotube / glass fiber nano-micron compound powder. Pretreated glass fiber is added to an alcohol and water mixed solution of TEOS, KH550, acidified carbon nanotubes and acid or alkali at the temperature of 50-85 DEG C to have a hydrolysis and coating reaction, a product is filtered and dried, and the glass fiber based nano-micron powder is prepared. Surfaces of prepared glass fiber samples are coarse remarkably due to the fact that the carbon nanotubes are attached to the surfaces of the glass fiber through poly-silicon serving as an adhesion substrate. The samples integrate performance of the glass fiber and performance of the carbon nanotubes and are taken as filler to be added to a polymer composite material, the mechanical performance of the material is expected to be improved remarkably, and the polymer material has an antistatic property, an antibacterial property and the like. The yield of the prepared samples is large, the process is simple, the cost is low, and the method has industrial application potential and is expected to be used for preparation and industrial research of other kinds of micro-nano materials.

The invention discloses a method for directly preparing xylitol from hemicellulose. The preparation method comprises the following steps: mixing biomass hemicellulose, a magnetic solid acid catalyst and deionized water, carrying out a sealed reaction at 170-200 DEG C for 1-5 hours in a hydrogen atmosphere of 1-4 MPa and at a stirring rate of 500-700 rpm, and conducting cooling to room temperatureto obtain the xylitol. After being magnetically separated and dried, the magnetic solid acid catalyst is used for a next reaction. The yield of the xylitol is high, and byproducts and excessive hydrogenolysis products cannot appear in the hydrolysis and hydrogenation processes with the used magnetic solid acid catalyst.

The invention discloses an electrochemical method for preparing a high-purity molybdenum disulfide nanosheet from molybdenite. The purity of the obtained molybdenum disulfide nanosheet reaches 99.0% or above, and the average thickness of the nanosheet is only 10-30 nm. The method comprises the following preparation steps: (1) putting alkali metal chlorate into a nickel reaction container, melting at high temperature, and then reducing the temperature of molten salt to a reaction temperature; (2) adding molybdenite into a nickel container and immersing themolybdenite in molten salt by taking the nickel container as a cathode and the molten salt as electrolyte, and mounting an anode for electrolysis; and (3) after the electrolysis is finished, taking out the anode, cooling to room temperature in an inert atmosphere, collecting anode surface sediments, and washing and drying to obtain the high-purity molybdenum disulfide powder. The method is simple to operate, clean in process and low in preparation cost; and the obtained molybdenum disulfide nanosheet is stable in property, and shows relatively high lithium storage performance and electrochemical stability when being used as a lithium ion battery negative electrode material.

The invention discloses preparation of a carbon nanotube / polyaniline / polysulfone conductive ultrafiltration membrane and a membrane pollution online monitoring technology. With polysulfone as a film-forming material, and carbon nanotubes and polyaniline nanofibers as fillers, the carbon nanotube / polyaniline / polysulfone conductive ultrafiltration membrane is prepared by a blending method and immersion phase transformation. A polysulfone membrane itself is non-conductive, so with the addition of conductive material carbon nanotubes and polyaniline, not only are the flux, hydrophilicity, mechanical strength and other properties of the membrane improved, but also the electrical conductivity of the membrane is improved. The change of the membrane flux is reflected through the change of the membrane resistance, and a membrane pollution condition can be monitored in real time. The preparation method and process flow of the conductive ultrafiltration membrane are simple and easy to operate andlow in cost; the prepared membrane has excellent performance, the real-time monitoring method of the membrane pollution is sensitive and simple, the service life of the membrane is prolonged, and themembrane can be used in the industrial fields such as sewage treatment, protein separation and the like.

The invention discloses a production method for 3-aminoisobutyric acid. A 3-aminoisobutyric acid producing strain is constructed through the following steps: A, knocking out the ptsG, fumAC and fumB genes in the MG1655 genome of Escherichia coli so as to obtain the gene knockout strain MG1655 (delta<ptsG>delta<fumAC>delta<fumB>); B, constructing of expression plasmids expressing the genes panD, aspA and C24MTgm; and C, transforming the plasmids obtained in the step B into the gene knockout strain MG1655 (delta<ptsG>delta<fumAC>delta<fumB>) obtained in the step A so as to obtain a genetically-engineered strain. The Escherichia coli engineered strain constructed in the invention can produce 3-aminoisobutyric acid, and the yield of aminoisobutyric acid produced through shake flask fermentation is as high as 100 mg / L.

The invention discloses a sulfonic acid inner salt compound of amidine, which uses an anthranilyl sulfonyl chloride compound and an amide as reactants, and is stirred and reacted to obtain the product amidine sulfonic acid inner salt. The synthesis method of the amidine sulfonic acid internal salt compound disclosed by the invention is simple in operation, mild in reaction conditions, good in yield, and universal to various amides; no reaction solvent is needed, and the environmental pollution is small; the source of raw materials used is wide and easy to obtain ; The synthesis process is simple and controllable, and the practical operation is strong; the atom economy of the reaction is good, and the only by-product is hydrogen chloride gas, which is easy to absorb or recycle; it is suitable for large, medium and small-scale synthesis, and has the potential for industrial application.

The invention discloses heat storage equipment for absorbing heat energy of molten calcium carbide by binary salt. The heat storage equipment comprises a heat preservation shell, a salt storage tank is embedded in the heat preservation shell, and a thick-wall rotating sleeve, a spiral water pipe and a first spiral blade are arranged on a lower cylinder of the salt storage tank. The thick-wall rotating sleeve sleeves a driven gear I, the driven gear I is meshed with a driving gear, and the driving gear, a wind wheel bin and turbofan blades are coaxially arranged. The spiral water pipe communicates with the heat preservation shell and the water storage tank. A molten liquid feeding cylinder is internally tangent to the upper cylinder of the salt storage tank, the molten liquid feeding cylinder is provided with a second shaft and a second spiral blade. According to the heat storage equipment for absorbing the heat energy of the molten calcium carbide by the binary salt, the binary salt isadopted to absorb the heat energy of the molten calcium carbide for the first time, the heat preservation shell and the salt storage tank of special structures are designed, the stirring, water lifting and conveying and water heat exchange preheating processes of the binary salt can be achieved through a screw extrusion lifting structure and an Archimedes water pump lifting structure, and calciumcarbide liquid is lifted and stirred in an enhanced mode through the screw extrusion lifting structure; and the heat storage equipment for absorbing the heat energy of the molten calcium carbide by the binary salt is high in heat exchange efficiency, free of plug-in, low in energy consumption and capable of avoiding binary salt caking and saving maintenance cost.

The invention relates to a method for increasing the oil content and fatty acid content in Xanthophylla, which belongs to the field of biotechnology and food engineering. The method described in the invention is to add some bacteria to the culture system to improve the oil content and fatty acid content of Xanthophylla. Biotechnology affecting its fatty acid composition; the oil-enriched microalgae produced according to the invention can be used as a raw material for vegetable oil production and polyunsaturated fatty acid feed additive development.

The invention relates to a method for producing long-chain alkane through hydrothermal reduction of carbon dioxide by utilizing iron powder and cobalt powder. The method comprises the following steps:decomposing in-situ hydrogen produced in water by taking the iron powder as a reducing agent, and enabling the carbon dioxide to react with the in-situ hydrogen for 0.5-12 h so as to to obtain the long-chain alkane (C1-C21) in a hydrothermal condition of 150-400 DEG C by taking the cobalt powder as a catalyst. According to the method, the in-situ hydrogen in the water is directly used, H2 gas does not require to be used, and the problems of transportation, storage, purity and the like of H2 are avoided; compared with hydrogen gas, the in-situ hydrogen decomposed in the water has higher activity, and the long-chain alkane has a faster generation rate. In the hydrothermal reaction process, a special honeycomb nanosheet is in situ synthesized by the cobalt powder, and becomes an active center for catalysis of the generation of the long-chain alkane. The whole process is simple and efficient, only ordinary iron and cobalt powder requires to be used, a particular catalyst specially synthesized by a complicated process is not required, and the method has very broad industrial application prospects.

The invention belongs to the technical field of biomass energy utilization, and particularly relates to a red mud-based catalyst for synthesizing low-carbon alcohol as well as preparation and application of the red mud-based catalyst. The catalyst takes red mud as a carrier, an active component is Cu, and an auxiliary agent is one or more of Rh, Mo, Zr, La, Ce, Mn, Co and Cr. The mass content of the active component in the catalyst is 10-80%, the mass content of the auxiliary agent is 10-50%, and the balance is the carrier. The catalyst is prepared by taking the red mud as the carrier and is applied to the reaction for preparing the low-carbon alcohol from the biomass synthesis gas, so that the utilization rate of biomass resources is increased, the problems of high catalyst cost, low CO conversion rate and low C2 + alcohol selectivity in the reaction for preparing the low-carbon alcohol from the synthesis gas in the prior art are solved, and the catalyst has industrial application potential.

The invention discloses a method for synthesizing an amidine sulfonic acid inner salt compound. An anthranilyl chloride compound and an amide are used as reactants, and a stirring reaction is performed to obtain a product amidine sulfonic acid inner salt. The synthesis method disclosed by the invention is simple to operate, has mild reaction conditions, good yield, and is universal to various amides; no reaction solvent is needed, and the environmental pollution is small; the raw materials used are widely sourced and easy to obtain; the synthesis process is simple and controllable, practical The operability is strong; the atomic economy of the reaction is good, and the only by-product is hydrogen chloride gas, which is easy to absorb or recycle; it is suitable for large, medium and small-scale synthesis, and has the potential for industrial application.

The invention discloses a genetically engineered strain of Saccharomyces cerevisiae with high pyruvic acid production. The strain is classified and named as Saccharomyces cerevisiae XY-156A, which is preserved in the General Microbiology Center of the China Microorganism Culture Collection and Management Committee, and the preservation number is CCTCC M 2019129. The genetically engineered strain of Saccharomyces cerevisiae XY-156A of the present invention can utilize a large amount of glucose to ferment and produce pyruvic acid, and after 76 hours of fed-batch fermentation, the pyruvate concentration in the fermentation broth can reach 105 g / L, and the pyruvic acid yield is 0.5g / g glucose has potential application value in pyruvate fermentation production.

The invention discloses a method for directly preparing xylitol from hemicellulose, comprising: after mixing biomass hemicellulose, a magnetic solid acid catalyst and deionized water, under a hydrogen atmosphere of 1-4MPa and 500-700rpm Under the agitation rate of 170-200°C, carry out closed reaction for 1-5h, and then cool to room temperature to obtain the xylitol; the above-mentioned magnetic solid acid catalyst is used for the next reaction after magnetic separation and drying. The yield of the xylitol of the invention is high, and the magnetic solid acid catalyst used will not produce by-products and excessive hydrogenolysis products in the process of hydrolysis and hydrogenation.