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57results about How to "Rich pore structure" patented technology

Method for preparing porous activated carbon based on pulse electrochemical activation, porous activated carbon and application

The invention discloses a method for preparing porous activated carbon based on pulse electrochemical activation, the porous activated carbon and application, and the method comprises the following steps: preparing a working electrode plate from carbon powder, and placing the working electrode plate in an electrolyte for pulse electrochemical square wave circulation treatment, wherein the electrolyte is an aqueous solution containing sulfuric acid, persulfate, sulfate and a cationic surfactant, stripping, cleaning and drying to obtain the porous activated carbon. According to the preparation method, the carbon powder is prepared into the working electrode plate, and the working electrode plate is subjected to pulse electrochemical square wave circulation treatment in the electrolyte containing the sulfuric acid, the persulfate, the sulfate and the cationic surface active agent, so that the porous activated carbon with large specific surface area, high electro-adsorption capacity and good conductivity can be prepared; when being used as a raw material for preparing a capacitive deionization electrode, the composite material shows good conductivity, high desalination capacity and high desalination rate, can be widely used for electro-adsorption desalination, and is high in use value and good in application prospect.
Owner:JIANGXI COPPER TECHNOLOGY RESEARCH INSTITUTE CO LTD

A bamboo-based and lignin-based hard carbon composite material, its preparation method and application

ActiveCN118851151BAbundant resourcesshorten the growth cycleNegative electrodesSecondary cells
This invention belongs to the field of hard carbon technology, specifically relating to a bamboo-based and lignin-based hard carbon composite material, its preparation method, and its applications. The process involves pretreating raw materials to obtain pretreated material; pretreating the pretreated material with an acidic oxidant to obtain acidic oxidant pretreated material; pre-oxidizing the acidic oxidant pretreated material to obtain pre-oxidized material; pre-carbonizing the pre-oxidized material under a protective atmosphere to obtain pre-carbonized material; pulverizing the pre-carbonized material to obtain pulverized material; acid washing followed by water washing to obtain purified material; soaking the purified material in acid, filtering, and drying to obtain soaked material; mixing the soaked material with a modifier, and high-temperature coating and carbonizing under a protective atmosphere to obtain bamboo-based coated hard carbon or lignin-based coated hard carbon. Mixing the two types of hard carbon and carbon coating yields a bamboo-based and lignin-based hard carbon composite material, which is used in negative electrode sheets and batteries. When applied to batteries, the hard carbon composite material of this invention can improve battery energy density.
Owner:福建容钠新能源科技有限公司 +1

Anaerobic denitrifying bacterial agent as well as preparation method and application thereof

The invention discloses an anaerobic denitrifying bacterial agent as well as a preparation method and application thereof, and belongs to the technical field of water environment treatment. The anaerobic denitrifying bacterium agent is prepared from the following components in parts by weight: 15 to 30 parts of sterile water, 15 to 60 parts of normal saline, 5 to 10 parts of micro-capsule embedded anaerobic denitrifying bacteria, 5 to 20 parts of a porous composite modified carrier, 10 to 30 parts of a carbon source, 4 to 7 parts of nutrient elements, 2.5 to 4 parts of a buffering agent and 1 to 5 parts of a stabilizer, the micro-capsule embedded anaerobic denitrifying bacteria are obtained by embedding anaerobic denitrifying bacteria with an alginic acid gel solution and a calcium chloride solution; the porous composite modified carrier is obtained by crosslinking modified nano iron oxide, modified nano titanium dioxide, a functional polymer solution and glutaraldehyde. The anaerobic denitrifying bacterial agent provided by the invention can effectively improve the efficiency of treating nitrogen pollution of a water body.
Owner:CHENGDU XINBOAO OIL & GAS ENG TECH SERVICE CO LTD

Indoor microorganism disinfection and purification system

The utility model discloses an indoor microorganism disinfection and purification system which comprises a shell, the shell is provided with an air inlet and an air outlet, the shell is provided with a purification device, a disinfection device and a centrifugal fan, and the purification device, the disinfection device and the centrifugal fan are sequentially arranged in the airflow direction; the disinfection device comprises a photocatalyst layer and a plurality of ultraviolet lamp tubes, and the photocatalyst layer and the ultraviolet lamp tubes are sequentially arranged in the direction from the air inlet to the air outlet. The disinfection device is composed of a photocatalyst layer and a plurality of ultraviolet lamp tubes, under ultraviolet irradiation, the photocatalyst layer can generate hydroxyl free radicals and superoxide anion free radicals with strong oxidizing property, and the free radicals can be rapidly subjected to oxidation-reduction reaction with bacteria, viruses, formaldehyde and other harmful microorganisms and organic pollutants in the air, so that the disinfection effect is achieved. The cell structure or molecular chain is destroyed and decomposed into harmless substances such as carbon dioxide, water and the like, so that the purposes of disinfection and purification are achieved.
Owner:广州恒泰净化科技有限公司

Corrosion aluminum powder and preparation method and application thereof

PendingCN121776482Aavoid transmissionPrevent or reduce performance degradationElectrolytic capacitorsTransportation and packaging
The invention discloses corrosion aluminum powder and a preparation method and application thereof, and the preparation method comprises the following steps: S1, carrying out plasma passivation treatment on aluminum powder to obtain surface modified aluminum powder with an amorphous aluminum oxide layer; and S2, carrying out surface micro-corrosion on the surface modified aluminum powder, and then drying and grading to obtain the corroded aluminum powder. The method comprises the following steps: forming an amorphous aluminum oxide layer on the surface of aluminum powder; and then micro-corrosion is carried out on the amorphous aluminum oxide layer, a rich pore structure is formed on the amorphous aluminum oxide layer, and after corrosion is completed, the amorphous aluminum oxide layer can be automatically formed on the corrosion surface again. The surface of the obtained corrosion aluminum powder is completely wrapped by the amorphous aluminum oxide layer, so that the leakage current can be greatly reduced, and the electrochemical stability of the anode foil is greatly improved; the porous carbon has certain roughness and rich pore structures, and the specific surface area and the specific volume are greatly increased; the micro-corrosion has no negative influence on the mechanical strength of the aluminum powder, and ensures that no micro-crack appears on the surface of the anode foil.
Owner:ZHEJIANG HONGLIANG NEW MATERIAL TECH CO LTD

Functionalized microporous elastic fibers and methods for making the same

This invention provides a functionalized microporous elastic fiber and its preparation method. The preparation process involves first dissolving a predetermined mass of polyurethane prepolymer in a binary solvent to obtain a spinning solution; then mixing silicone oil and an emulsifier to obtain solution A; simultaneously, uniformly dispersing functional particles in deionized water to obtain dispersion B; then adding dispersion B to solution A and mixing to obtain an emulsion coagulation bath; finally, placing the prepared spinning solution in a spinning device and ejecting it through spinning holes, allowing the spun fibers to enter the prepared emulsion coagulation bath for a predetermined time, followed by stretching and drying to obtain functionalized microporous elastic fibers. This invention controls the difference in compatibility between the binary solvent and the water and silicone oil in the emulsion coagulation bath, enabling rapid shaping of the spun fibers and simultaneously achieving the preparation of functionalized fibers. Based on the principle of phase separation, by controlling the solvent ratio and the degree of emulsification in the coagulation bath, and further through stretching and high-temperature drying and setting, porous functionalized elastic fibers are obtained.
Owner:WUHAN TEXTILE UNIV

Soil microorganism efficient water purification filter material and preparation process thereof

The invention relates to a soil microorganism high-efficiency water purification filter material and a preparation process thereof, and aims to solve the problems of low removal efficiency, high cost, easiness in secondary pollution, insufficient affinity with soil microorganisms and the like of the existing microorganism filter material. The filter material is prepared by taking volcanic rock, activated carbon, bentonite and modified cellulose as main raw materials, combining the main raw materials according to a specific ratio, preparing porous particles by virtue of processes such as calcining, activating, mixing, granulating and sintering, and finally loading the porous particles by virtue of a microbial bacterial liquid. The product has a large specific surface area, good adsorption performance and high chemical stability, and can provide an excellent adhesion and growth environment for soil microorganisms. Experiments prove that the filter material can significantly improve the removal efficiency of pollutants such as COD, ammonia nitrogen and total phosphorus in sewage, and the filter material has the advantages of easily available raw materials, low cost and environmental friendliness, and is suitable for the fields of sewage treatment, ecological restoration and the like.
Owner:GUIZHOU GELIN ECOLOGICAL ENVIRONMENT ENG CO LTD

Zirconium-based MOFs composite material loaded with carbon nitride quantum dots and preparation method and application thereof

The invention belongs to the field of preparation of photoelectric catalytic materials, and discloses a zirconium-based MOFs composite material loaded with carbon nitride quantum dots as well as a preparation method and application of the zirconium-based MOFs composite material. The composite material is prepared by adopting a solid phase method, and the method is simple, low in cost, easy to amplify, free of toxic solvents and environmentally friendly. The zirconium-based MOFs composite material loaded with the carbon nitride quantum dots prepared by the invention retains the advantages of large specific surface area and rich pore structure of the MOFs material, and shows excellent hydrogen production performance when the zirconium-based MOFs composite material loaded with the carbon nitride quantum dots is used as a photoelectrode material for hydrogen production by photoelectrocatalytic decomposition of water.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Boiling bed hydroprocessing catalyst, its preparation and application

This invention discloses a fluidized bed hydrotreating catalyst, its preparation method, and its application. The hydrotreating catalyst includes a hydrotreating active metal component, a support, and optional auxiliary phosphorus. The support is a carbon-containing alumina composite support. The preparation method includes the following steps: (1) spheroidizing a first pseudoboehmite powder to obtain a first support precursor; (2) treating an aqueous solution of the first support precursor, an additive, and an organic polymer B to obtain a second support precursor; (3) treating the second support precursor, the second pseudoboehmite powder, and an acidic solution to obtain a third support precursor; (4) subjecting the third support precursor to low-temperature heat treatment to obtain a fourth support precursor; (5) mixing the fourth support precursor with an auxiliary solution, drying, and calcining to obtain an auxiliary-modified carbon-containing alumina composite support; (6) introducing a hydrotreating active metal component onto the composite support, followed by drying and calcining to obtain the fluidized bed hydrotreating catalyst.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A coal-based hard carbon anode material, its preparation method and application

This invention provides a coal-based hard carbon anode material, its preparation method, and its applications. The preparation method includes the following steps: introducing industrial waste gas into raw coal, sequentially performing pre-carbonization and pore-forming, followed by high-temperature carbonization to obtain the coal-based hard carbon anode material. The preparation method provided by this invention uses extremely low-cost industrial waste gas to perform pore-forming treatment on the raw coal material, greatly reducing the preparation cost, and the resulting coal-based hard carbon anode material has high capacity and excellent performance.
Owner:福建龙净储能电池有限公司

Solid acid catalysts, processes for their preparation and use

PendingCN122273581AStable acid active centerLarge specific surface areaPolymer sciencePtru catalyst
This invention provides a solid acid catalyst comprising a divinylbiphenyl polymer as a backbone and a sulfonate group as an active center; wherein the divinylbiphenyl polymer comprises substituted or unsubstituted divinylbiphenyl monomer structural units and optionally substituted or unsubstituted divinylbenzene monomer structural units; in both the substituted or unsubstituted divinylbiphenyl monomer structural units and the substituted or unsubstituted divinylbenzene monomer structural units, the substituents are each independently C1-C5 alkyl groups. This invention selects suitable polymeric monomers and polymerizes them to obtain a polymer backbone with a stable backbone structure and a large specific surface area; after sulfonation, the backbone structure is maintained, and the resulting catalyst has a stable acid active center.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2

Novel biomolecular carbon material device for removing antibiotic pollutants in meat and vegetables as well as preparation method and application of novel biomolecular carbon material device

The invention discloses a novel biomolecular carbon material device for removing antibiotic pollutants in meat and vegetables as well as a preparation method and application of the novel biomolecular carbon material device. The novel biomolecular carbon material device is used for removing the antibiotic pollutants in the meat and vegetables. The biomolecular carbon material is prepared by the following steps: preparing biochar from coffee residues and tea residues through a specific firing process, pressing the biochar through a specific adhesive to form a spherical device, and drying the spherical device. The spherical device is placed in a container containing meat or vegetables, and antibiotic pollutants in the container can be effectively adsorbed. According to the invention, resource utilization of wastes is realized, a safe, efficient and environment-friendly method for removing antibiotic pollutants in meat and vegetables is provided, food safety is guaranteed, and the method has important application value in the field of food safety.
Owner:BEIJING UNIV OF TECH +1

Preparation method and application of slow-release phosphorus fertilizer based on buckwheat hull

ActiveCN117865726Bavoid missingavoid churn
The application discloses a preparation method of slow-release phosphorus fertilizer based on buckwheat hull as raw material, and specifically implements the following steps: step 1, washing buckwheat hull with deionized water, drying and then crushing and sieving; step 2, extracting pigment from the sieved buckwheat hull; step 3, mixing and oscillating the treated buckwheat hull in step 2 with anhydrous calcium chloride; step 4, pyrolyzing and sieving the mixture in step 3 to obtain CaCl2 modified buckwheat hull biochar; and step 5, placing the biochar in a conical flask containing a phosphorus-rich solution, sealing and oscillating, then filtering the solid and drying to obtain slow-release phosphorus fertilizer. The application is simple in preparation, saves resources and protects environment, and solves the problems of excessive phosphorus in water and phosphorus deficiency in soil. On the other hand, slow-release phosphorus fertilizer is added into soil to slowly release phosphorus, avoids the problem of phosphorus loss caused by traditional chemical phosphorus fertilizer, and can also improve the physicochemical properties of soil, reduce the soil bulk density and increase the soil organic matter content.
Owner:XIAN UNIV OF TECH

Welding equipment for ship part repair

The utility model discloses welding equipment for ship part repair, and relates to the technical field of welding equipment. Comprising a mounting frame, the mounting frame is provided with a mounting mechanism used for ship part repairing, machining and welding, the mounting mechanism comprises a turnover assembly, the turnover assembly comprises a supporting shaft rotationally connected with the interior of the mounting frame, a machining platform is fixed to one end of the supporting shaft, and a mounting support connected through a pushing assembly is arranged on the outer wall of the machining platform; the machining platform rotates on the installation frame through the supporting shaft, meanwhile, the adjusting plate fixed to the outer wall of the supporting shaft rotates to the other set of locking supports, locking is carried out through screws, welding work on the other face of a part is achieved, the part does not need to be clamped again, the clamping time is saved, and the machining efficiency is improved. Therefore, the overall welding work efficiency is improved, double-face welding is achieved through rotation, errors possibly caused by re-clamping and re-positioning are avoided, and the welding strength is improved.
Owner:ZHENENG SHIPBUILDING IND (SUZHOU) CO LTD

Activated carbon adsorbent with ultra-high molecular weight polyethylene fiber as skeleton and preparation method of activated carbon adsorbent

PendingCN121988283Aresolve overflowSolve the problem of low content of active ingredientsOther chemical processesDispersed particle separationFiberActivated charcoal powder
The invention belongs to the technical field of air purification, and particularly relates to an activated carbon adsorbent with ultra-high molecular weight polyethylene fibers as a framework and a preparation method of the activated carbon adsorbent. The activated carbon adsorbent is of a porous sheet structure and comprises 85-95 wt% of activated carbon powder, 1-10 wt% of a polymer and 0.2-3.0 wt% of an auxiliary agent, wherein the polymer is ultra-high molecular weight polyethylene or a mixture of ultra-high molecular weight polyethylene and high-density polyethylene; the polymer presents a cross network skeleton structure in a fibrous form, and the active carbon powder and the auxiliary agent are attached to the polymer fiber. The activated carbon adsorbent has the advantages of extremely low dust capacity in the use process, high content of effective components, small bed resistance, high harmful gas adsorption rate and the like.
Owner:THE 718TH RES INST OF CHINA STATE SHIPBUILDING CORP

Preparation methods and applications of atomically Lewis acid-base modified functional carbon materials

ActiveCN118561275BImprove modification efficiencyRealize functional modificationGas treatmentOther chemical processesPolymer modifiedMetal impurities
This invention discloses a method for preparing functional carbon materials with atomically dispersed Lewis acid-base sites, comprising: (1) polymer preparation to obtain a polymer sample; (2) polymer modification to obtain a modified polymer sample; (3) polymer carbonization: the modified polymer sample is heat-treated in a non-oxidizing atmosphere to carbonize the modified polymer sample; after carbonization, the system is naturally cooled; then, after washing and drying, the target functional carbon material is obtained. This invention utilizes atomically dispersed Lewis acidic metal sites and basic N sites to modify carbon materials in situ. The prepared functional carbon material has a large specific surface area, well-developed pore structure, abundant acid-base sites, and an atomically distributed structure, which can significantly improve the density of functional sites on the surface of the carbon material and its adsorption efficiency for boron, phosphorus, and metal impurities. Its application in the purification of chlorosilanes can greatly reduce the load of subsequent distillation and impurity removal, and improve the yield and quality of high-purity chlorosilanes.
Owner:XINTE ENERGY CO LTD

Lithium-ion battery separator with porous alumina-based composite coating and its preparation method

This invention discloses a lithium-ion battery separator with a porous alumina-based composite material coating and its preparation method. The lithium-ion battery separator with the porous alumina-based composite material coating includes a base film and a coating on the base film. The coating includes modified porous alumina, which comprises porous alumina and lithium element supported on the porous alumina. The method for preparing the modified porous alumina includes: immersing the porous alumina in an aqueous solution of lithium salt, simultaneously stirring and sonicating under vacuum for 4-6 hours, drying, grinding into powder, and calcining at 400-600℃ for 2-4 hours under an inert gas atmosphere to obtain the modified porous alumina. The lithium-ion battery separator of this invention has high heat resistance, high wettability, and high ionic conductivity.
Owner:HEBEI GELLEC NEW ENERGY MATERIAL SCI&TECHNOLOY CO LTD

Metal / heteroatom co-doped silicon carbon negative electrode material and preparation method and application thereof

PendingCN122000337AImprove conductivityImprove deposition uniformityCell electrodesPorous carbonElectrical battery
The invention provides a metal / heteroatom co-doped silicon carbon negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium ion battery materials. The metal compound and heteroatoms are uniformly distributed on the porous carbon substrate in an in-situ growth doping manner, so that the electron conductivity of the material is improved, the diffusion rate of lithium ions in the material and on an interface is also improved, and the reaction kinetics of the silicon-carbon negative electrode material is further synergistically improved. Meanwhile, the prepared silane deposited silicon-carbon negative electrode material has good conductivity, high structural stability and long cycle life.
Owner:YINSI (NINGBO) TECH CO LTD +1

Lignin carbon modified hydrogen evolution reaction catalyst and preparation method thereof

The invention relates to a lignin carbon modified hydrogen evolution reaction catalyst which is prepared by the following steps: 1) dissolving lignin in deionized water to obtain a solution B; 2) respectively dissolving nickel salt, manganese salt and molybdenum salt in the solution B to obtain a mixed solution C, adding the mixed solution C and the pretreated nickel-based carrier into a reaction kettle for hydrothermal reaction, cooling to room temperature after the reaction is finished, taking out reaction liquid in the reaction kettle, filtering, cleaning a filter cake, and drying to obtain a primary sample; and 3) performing high-temperature calcination on the preliminary sample prepared in the step 2) in a mixed atmosphere environment of hydrogen and argon to obtain the lignin carbon modified hydrogen evolution reaction catalyst. Lignin serves as a carbon source, nickel salt, manganese salt and molybdenum salt serve as metal sources at the same time, the lignin and metal ions are subjected to chelation through hydrothermal reaction synthesis, high-temperature calcination reduction is conducted, and the lignin carbon modified hydrogen evolution reaction catalyst is obtained. The prepared catalyst is simple in method, low in cost and high in activity.
Owner:GUANGXI UNIV

A method for synthesizing a single-atom catalyst in parallel with structure construction and single atom generation

The application belongs to the field of nanomaterials and electrocatalysis, and specifically designs a single-atom electrocatalyst, which is formed by carbonizing a precursor mixed with nitrogen-containing organic matter and transition metal salt in a way parallel to single-atom generation. The nitrogen-doped carbon nanosheet prepared from the metal salt has the characteristics of rich pore structure, large specific surface area and high graphitization degree, and can capture single-atom metal to form a single-atom catalyst. In the preparation process, the transition metal salt acts as a template, a metal source and a pore-forming agent, and has a catalytic effect on the formed carbon material, thereby improving the graphitization degree of the carbon material. The single-atom catalyst prepared by the application has a high specific surface area and a developed pore size structure, which improves the exposure rate of active sites, and the carbon with a high graphitization degree not only improves the conductivity but also improves the corrosion resistance of the catalyst in an alkaline environment, thereby improving the stability of the catalyst.
Owner:OCEAN UNIV OF CHINA

A distiller's grain biomass-based modified adsorption hydrogel and preparation and application thereof

PendingCN122502583ASimple preparation processEase of industrial implementationSurface moisturePlasticizer
The application discloses a kind of distiller's grains biomass-based modified adsorption hydrogel and its preparation and application.It includes the following steps: step one: take non-water soluble distiller's grains organic matter;Step two: the non-water soluble distiller's grains organic matter is dissolved, and organic matter solution is obtained;Step three: modifier is added to organic matter solution, and mixed liquor is obtained;Step four: gel component is added to mixed liquor, and initiator, crosslinking agent and plasticizer are further added, and gel crude product is obtained;Step five: gel crude product of step four is placed in refrigerator freezing, and after taking out, it is thawed at room temperature, and gel is obtained;Step six: the gel of step five is soaked in ethanol, then the surface residual uncrosslinked component is rinsed with water, and surface moisture is absorbed, and final product is obtained.The hydrogel material has the characteristics of simple preparation process, low cost, biodegradable, strong heavy metal adsorption capacity, good cycle stability, and waste utilization of distiller's grains, which to some extent alleviates the problem caused by inventory distiller's grains.
Owner:GUIZHOU MATERIAL IND TECH INSTITUE

Synthesis method and application of high-efficiency iodine adsorption material

This invention belongs to the field of iodine adsorption material technology, and discloses a method for synthesizing and applying a highly efficient iodine adsorption material. The synthesis method includes: S1, adding an organic aldehyde ligand to a container, adding a solvent, and stirring to completely dissolve the aldehyde ligand; S2, slowly adding the above solution dropwise to an organic amine ligand solution to completely mix it with the amine ligand; S3, sealing the above mixed solution and stirring at room temperature until the color deepens; S4, after the reaction is complete, separating the reaction solution into small glass vials, tightening the caps, loosening them by half a turn, and placing them in a protective atmosphere; after several days of gas-liquid diffusion, visible crystals form at the bottom of the glass vials. The synthesized adsorption material has applications in volatile and radioactive iodine. The crystalline adsorption material synthesized by this invention has good stability, high adsorption efficiency for iodine, and a fast adsorption rate, and can be used for nuclear waste treatment and the capture of radioactive iodine.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI

Titanium dioxide negative pole piece, preparation method thereof and aqueous lithium ion battery

The invention relates to a titanium dioxide negative pole piece, a preparation method thereof and an aqueous lithium ion battery, and belongs to the field of electrochemical materials. And at least one of the problems of low conductivity, easy agglomeration of nano-particles, poor rate capability caused by serious hydrogen evolution in an aqueous battery, fast cycle capacity fading and the like of the negative plate in the aqueous lithium ion battery in the prior art is solved. The preparation method of the titanium dioxide negative pole piece comprises the following steps: performing electrochemical expansion treatment on graphite paper to obtain expanded graphite paper; carrying out fluorination treatment on the expanded graphite paper; loading titanium dioxide on the fluorinated expanded graphite paper to obtain an active precursor; and combining the active precursor with a current collector to obtain the titanium dioxide negative pole piece. By improving the conductivity of the negative plate, the phenomena of nanoparticle aggregation and hydrogen evolution are reduced, and the rate capability and the cycle capacity retention ratio of the aqueous lithium ion battery are improved.
Owner:CHAOWEI POWER GROUP CO LTD

Preparation method and application of carbon dioxide fusion element capture agent

PendingCN122352220AGood dispersionconducive to loadWarm waterMicrosphere
This invention relates to the agricultural field, specifically to a method for preparing and applying a carbon dioxide fusion element trap. It addresses the problem that polymeric film-forming agents added to foliar fertilizers easily form a continuous, dense, and impermeable physical film on the leaf surface, making it difficult for carbon dioxide to enter, interfering with normal photosynthesis and transpiration, and thus causing abnormal leaf metabolism. The method involves immersing mesoporous silica microspheres in a PEI solution to obtain PEI-loaded microspheres, then adding a solution of gelatin, chitosan, glycerol, and glutaraldehyde to deionized water to form a composite gel base solution. Finally, selenomethionine, seaweed oligopeptides, and yeast extract are mixed with the composite gel base solution in warm water to obtain the carbon dioxide fusion element trap. This invention, through careful material selection and structural design, cleverly achieves a balance between strong adhesion and high permeability, allowing it to firmly adhere to the leaf surface and eliminating the defect of clogging leaf stomata.

Pre-sodium hard carbon material as well as preparation method and application thereof

The invention relates to the technical field of electrochemical materials, in particular to a pre-sodium hard carbon material and a preparation method and application thereof. The pre-sodium modification method for preparing the pre-sodium modification hard carbon material comprises the following steps: (1) mixing a carbon source, amino acid and phosphoric acid, and carrying out pre-carbonization reaction to obtain a doped carbon source; (2) providing dispersion liquid containing the doped carbon source, a surfactant and weak base, and introducing organic sodium salt to carry out sodium pre-modification reaction to obtain a hard carbon precursor; and (3) carrying out carbonization reaction on the hard carbon precursor to obtain the pre-sodium hard carbon material. The pre-sodium treatment method is simple to operate and high in safety, the obtained pre-sodium treatment hard carbon material is excellent in performance, and the problems that a sodium ion battery is low in energy density and poor in cycle performance can be effectively solved.
Owner:GUANGDONG HAISIDA NAXING TECHNOLOGY CO LTD

Method for improving dewatering efficiency of antibiotic bacterial residue by sludge hydrothermal carbon and high-pressure filter pressing in cooperation

This invention discloses a method for improving the dewatering efficiency of antibiotic bacterial residue through hydrothermal carbon conditioning combined with high-pressure filtration. The method involves placing sludge in a hydrothermal reaction vessel and carbonizing it at a constant temperature of 180℃–280℃ for 0.5–6 hours. The hydrothermal carbon from the hydrothermal carbonization reaction is then added to antibiotic bacterial residue with a moisture content of 85–98 wt.%, and after thorough mixing with hydrogen peroxide to break down the cell walls, high-pressure filtration is performed to obtain the dewatered antibiotic bacterial residue filter cake. The hydrothermal carbonization technology proposed in this invention requires no additional reagents, and the preparation temperature is lower compared to traditional carbon materials. Compared to traditional thermal treatment dewatering of antibiotic bacterial residue, only a very small proportion of hydrothermal carbon is needed to achieve highly efficient dewatering of the antibiotic bacterial residue, further reducing costs. Furthermore, this invention achieves both efficient dewatering of antibiotic bacterial residue and safe disposal and resource utilization of sludge waste.
Owner:GUANGZHOU INST OF ENERGY CONVERSION CHINESE ACAD OF SCI

Preparation method of Ni electrode strontium titanate toroidal varistor

This invention discloses a method for preparing a Ni-electrode strontium titanate toroidal varistor, specifically including: 1) dry pressing strontium titanate powder into a strontium titanate toroidal varistor green ceramic sheet; 2) removing the binder from the green ceramic sheet and pre-firing it; 3) sintering the removed-bind green ceramic sheet in a reducing atmosphere of a mixed gas of equal volumes of nitrogen and hydrogen to form a ceramic substrate; 4) subjecting the ceramic substrate to an oxidation heat treatment to form an oxide film on the surface; 5) screen printing a first layer of nickel paste onto the ceramic sheet, drying it, then screen printing a second layer of silver paste, drying it, and then firing it in an air atmosphere. In this invention, Ni paste is used instead of ohmic silver paste, and sintering is performed in air, which significantly reduces the cost compared to ohmic silver paste, resulting in lower subsequent production costs; at the same time, the nickel paste can form a strong bond with the ceramic substrate, thus giving the nickel paste better adhesion to the ceramic substrate, good stability, and less tendency to delamination.
Owner:DONGGUAN E-LEO ELECTRONICS CO LTD

Preparation and application of hydrocarbon reforming hydrogen production catalyst for direct reduction iron process

PendingCN121797336AImprove anti-carbon performancerich pore structureHydrogenCarbon compoundsSteam reformingPtru catalyst
The invention discloses preparation and application of a hydrocarbon reforming hydrogen production catalyst for a direct reduction iron process. The catalyst contains 60-80% of a carrier, 10-15% of an active component I, 5-10% of an active component II, 1-5% of an anti-carbon additive, 3-10% of a structural additive and 1-3% of an electronic additive. The prepared catalyst has the advantages of high strength, high activity, carbon deposition resistance, excellent sintering resistance and high stability, the heat transfer function of the catalyst is improved due to the abundant pore structure, the surface temperature is reduced, and carbon deposition is reduced. The prepared catalyst is suitable for a CO2-supplementing reforming hydrogen production process of natural gas with a low water-carbon ratio in gas-based direct reduction iron, can be applied to an MIDREX process and a gas reduction process of an equal hydrogen-based shaft furnace, can be used under harsh conditions such as low-carbon hydrocarbon water vapor reforming and CO2 reforming hydrogen production, and is high in methane one-way conversion rate and CO2 one-way conversion rate.
Owner:SOUTHWEST CHEM (MEISHAN) CO LTD +1

Carbon aerogel nanosuspension with emulsification function and preparation method and application thereof

This invention discloses a carbon aerogel nanosuspension with emulsifying function, its preparation method, and its application. The preparation method of the carbon aerogel nanosuspension includes: adding an alkaline solution to an aqueous solution of a phenolic organic compound and stirring and mixing, then adding an aldehyde solution to carry out an addition reaction to obtain a benzene-based multi-component mixture; then stirring and mixing with an acid solution to carry out a condensation reaction, and then aging the resulting reaction product to obtain a wet gel; the wet gel is freeze-dried and carbonized to obtain a block carbon aerogel; finally, the block carbon aerogel is pulverized into nanoparticles and ultrasonically dispersed in water to obtain the carbon aerogel nanosuspension. The carbon aerogel nanosuspension prepared by this invention has good emulsifying function, can effectively reduce the viscosity of waste tire pyrolysis oil, and capture fly ash in waste tire pyrolysis oil.
Owner:XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD +1

A waste PET-based MOF functional material, its preparation method and application

This invention discloses a waste polyethylene terephthalate (PET)-based MOF (Metal-O-Factory) functional material, its preparation method, and its applications, belonging to the field of plastic chemical recycling technology. The method includes the following steps: heating a FeCl3 / NaCl / KCl molten salt system to its lowest eutectic temperature, adding PET to react, dissolving the reaction product in deionized water, ultrasonically treating, centrifuging, and drying to obtain the waste PET-based MOF functional material. This strategy uses waste PET and inexpensive iron salts as precursors, not only opening up a new direction for the high-value utilization of waste plastics but also providing a renewable technological approach for the low-cost, large-scale, and sustainable production of MOF materials.
Owner:BEIJING UNIV OF CHEM TECH +1