14results about How to "Rich sources" patented technology

This invention proposes an impact-resistant seawall repair adhesive and its preparation method, belonging to the field of adhesive technology. The impact-resistant seawall repair adhesive is prepared from the following raw materials in parts by weight: 70-100 parts water glass, 30-40 parts sodium fluorosilicate, 5-10 parts ammonium chloride, 10-15 parts curing agent, 30-50 parts dimethyl silicone oil, 5-7 parts metal oxide, 2-4 parts emulsifier, and 100-120 parts water. This impact-resistant seawall repair adhesive is a silicate inorganic adhesive that can withstand extremely high temperatures and large tensile and shear forces. It boasts advantages such as high bonding strength with the substrate and abundant raw material sources, good stability, and convenient operation.

This invention belongs to the field of environmental protection and resource recycling technology, specifically relating to a method for preparing high-purity basic magnesium carbonate from low-grade magnesite. The method includes the following steps: S1, crushing the low-grade magnesite and mixing it with an acid solution for acid leaching to obtain an acid leaching solution; S2, removing impurities from the acid leaching solution to obtain a refined solution; S3, absorbing the carbon dioxide gas released during the acid leaching step using an absorbent to obtain a carbon dioxide-loaded solution; S4, mixing the refined solution and the carbon dioxide-loaded solution for precipitation to obtain basic magnesium carbonate product and a protonated absorbent solution; S5, recovering the acid and regenerating the absorbent solution from the protonated absorbent solution using a bipolar membrane electrodialysis device. This invention utilizes the CO2-loaded solution as a precipitant to react with the Mg in the refined solution. 2+ The reaction produces basic magnesium carbonate. The reaction conditions are mild, and the crystal morphology and particle size are easy to control, thus obtaining a high-value-added product that meets market demands.

This invention relates to the field of carbon material preparation technology, specifically disclosing a method for preparing porous carbon materials using a hierarchical synergistic activation method and its application. This method uses waste biomass from *Siraitia grosvenorii* pomace as raw material, sequentially undergoing low-temperature pre-activation, water washing, high-temperature synergistic activation, and isothermal acid washing to obtain porous carbon materials with ultra-high specific surface area. Scanning electron microscopy analysis and pore structure detection results show that the carbon material exhibits a hierarchical porous layered structure. Electrochemical tests show that the material possesses excellent capacitance performance, with a specific capacitance reaching 200-450 F / g at a current density of 0.5 A / g. When this porous carbon material is assembled into a symmetrical supercapacitor, after 10,000 cycles at a current density of 10 A / g, the specific capacitance retention rate remains above 90%, demonstrating good cycle stability and showing promising application prospects in the field of energy storage.

The application discloses a preparation method of mixed carbon source derived hierarchical porous carbon. The steps of the preparation method of the mixed carbon source derived hierarchical porous carbon are as follows: firstly, starch and disaccharide are added into N-methylmorpholine-N-oxide aqueous solution and heated to be dissolved; the obtained mixture is melt-blended and extruded through a double screw extruder to prepare uniform mixed granules; then, the granules are subjected to pre-carbonization treatment to obtain a carbon precursor; the carbon precursor is ground into powder, mixed with an activating agent aqueous solution, dried, and subjected to activation carbonization at high temperature; finally, the carbonized product is subjected to acid pickling, water washing and drying to obtain the mixed carbon source derived hierarchical porous carbon electrode material. The disaccharide is white granulated sugar or maltose. The preparation method realizes uniform compounding of multiple carbon sources by using a melt-blending process, has the advantages of easy availability of raw materials and easy scale production, and the prepared product shows excellent electrochemical performance and good cycle stability.

This invention belongs to the field of nanocomposite material preparation and application technology, and discloses a method for preparing and applying a dendritic ternary SrCO3-TiO2 / CdS composite material. First, SrCO3-TiO2 nanoparticles are synthesized using a simple hydrothermal one-pot method with tetrabutyl titanate and Sr(NO3)2 as raw materials. These nanoparticles are then dispersed in deionized water to form a suspension. Finally, a dendritic ternary SrCO3-TiO2 / CdS composite material is prepared using an in-situ hydrothermal growth method. The dendritic ternary SrCO3-TiO2 / CdS composite material prepared by this invention can be used to produce hydrogen peroxide under visible light and simultaneously degrade oxytetracycline. The dendritic ternary SrCO3-TiO2 / CdS composite material prepared by this invention forms a unique dendritic structure by combining SrCO3-TiO2 composite particles with CdS. By utilizing the synergistic effect among the three, the transport and separation of photogenerated electron pairs at the interface are accelerated, and their recombination is effectively inhibited, thereby improving the catalytic activity of the dendritic ternary SrCO3-TiO2 / CdS composite material. It has broad application prospects in the synthesis of green chemicals and water pollution treatment.

The application discloses a kind of multilayer biomass cellulose adsorption materials and its preparation method and application, belong to biomass material and sewage treatment technical field.The application first obtains PEI-cellulose by polyethyleneimine modification to biomass cellulose;Then PEI-cellulose and chitosan are crosslinked to prepare surface layer adsorption liquid;While unmodified biomass cellulose and polyvinyl alcohol are mixed to prepare middle layer adsorption liquid;Finally, by layer liquid nitrogen freeze forming, freeze drying and alkali washing treatment, obtain the biomass cellulose adsorption material with sandwich multilayer structure.The multilayer adsorption material prepared by the application has positive electricity on outer layer, can be efficiently adsorbed by electrostatic effect in water with negative electricity micro / nano plastic;Middle layer is neutral, can be used to adsorb organic pollutants carried by micro / nano plastic.The material of the application is low in cost, simple in preparation process, fast in adsorption rate, high in removal rate and reusable, and has good application prospect in water treatment field.

The application discloses a kind of alginate-based high-entropy metal oxides and preparation method and application thereof, belong to gas sensor material technical field.The application uses the high-entropy metal salt solution of at least five kinds of metal sources and alginate solution is mixed, and alginate-based high-entropy metal aerogel is prepared, and then carbon cloth is wrapped, and nanometer sheet-shaped alginate-based high-entropy metal oxide is obtained by using Joule heating method rapid heating.The material can be used for high-sensitivity detection of ethanol gas.The preparation method in the application is green, simple, fast, has good sensing response effect in ethanol gas detection, and the sensing material has good stability, can be recycled multiple times, and has good application prospect.

A porous hollow spherical photonic crystal sensor for detecting xylene gas and a method thereof, comprising synthesizing PS@SiO2 core-shell colloids, assembling into spherical photonic crystals by microfluidics, calcining to remove the polystyrene inner core to form a hollow SiO2 structure, and introducing a porous structure by controllable chemical etching. Subsequently, functionalization is performed by using P(VBC-co-MMA) to obtain a porous hollow spherical photonic crystal sensor, which is endowed with strong molecular affinity for xylene, and selective gas adsorption of the porous photonic crystal is realized. Benefiting from the super-symmetrical spherical structure, the obtained photonic crystal sensor exhibits an inherent angle-independent optical response, overcoming the limitation of angle dependence of thin film photonic crystal sensors. Exposure to xylene gas shows a significant reversible red shift of the optical stop band and a clear color change, which is due to the increase of the effective refractive index caused by vapor diffusion and adsorption. By monitoring the movement of the optical stop band in air and saturated xylene, visual detection of xylene gas can be realized.

The application belongs to the technical field of biological medicine, and particularly relates to a preparation method and application of a polyketide compound from a fungus of the genus Arenarius. The polyketide compound can dose-dependently reduce the NO generation level in cells, significantly inhibit M1 phenotype polarization and promote the conversion of the M1 phenotype to the M2 phenotype, significantly down-regulate the expression of key inflammatory-related proteins (including IL-1beta, IL-6, TNF-alpha and COX-2) in cells, and inhibit the generation of NLRP3 inflammasome and caspase-1, revealing the potential anti-AD activity and indicating that the polyketide compound has a good application prospect in the preparation of anti-neuroinflammatory drugs. In addition, the polyketide compound can be prepared from a marine microorganism Arenarius fungus, and the preparation method is simple and the source is rich.

This invention discloses a mine backfill cementitious material and its preparation method. The mine backfill cementitious material of this invention comprises the following components in the following mass ratios: high belite sulfoaluminate cement clinker: 3-8 wt%; high free calcium silicate cement clinker: 1-3 wt%; granulated blast furnace slag powder or granulated blast furnace slag: 74-85 wt%; gypsum: 10-18 wt%. Compared with other paste-like backfill materials of the same strength, the cementitious material of this invention solves the problems of poor activation effect, poor mechanical properties affecting the mine backfilling effect, and high cost due to large amount of cementitious material used in existing mine backfill cementitious materials. At the same time, it not only reduces the proportion of cementitious material used, but also fully meets the requirements of mine backfilling projects.

The application discloses a one-pot preparation method of 3,4,5-trifluorobromobenzene. In an organic solvent, 2,6-difluoroaniline is used as raw material to obtain the product 3,4,5-trifluorobromobenzene through three steps of bromination, diazotization and fluorination at a certain temperature. The method has the advantages of multiple raw material sources, obvious cost advantage, safety and convenience, high total yield, less waste and the like, and is beneficial to industrialization.

This application provides a method and apparatus for generating industrial control code based on an industrial knowledge graph, belonging to the field of code generation technology. The method provided in this application involves: splitting an industrial system into multiple functional subsystems; determining the topological relationships of each component based on each functional subsystem; constructing an industrial knowledge graph based on the topological relationships and the logical relationships of each functional subsystem; generating a list of node types based on real-time industrial control requirements; matching candidate entity sets in the industrial knowledge graph based on the node type list to generate a candidate knowledge list; using a large language model as a decision-maker to evaluate the candidate knowledge list and output decision instructions; and using the industrial knowledge graph as a constraint, combining the decision instructions to generate industrial control code. The industrial control code generation method and apparatus based on an industrial knowledge graph provided in this application achieve highly reliable and low-ambiguity conversion from natural language requirements to target code that conforms to industrial standards and control logic.

The application belongs to the technical field of medical compounds, and particularly relates to an anti-tumor polyketide-nonribosomal peptide hybrid compound, a preparation method and application. The polyketide-nonribosomal peptide hybrid compound is compound 1 or compound 2, and structural formulas of the compound 1 and the compound 2 are as follows: The compound has anti-tumor activity, particularly anti-human breast cancer effect, and has relatively high anti-tumor activity.