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185 results about "Polyactive" patented technology

Epoxy resin material constructed by multistage molecular chain cross-linked network and preparation method

PendingCN120157843APolymer scienceResin matrix
The invention relates to the technical field of preparation of epoxy insulating materials, in particular to an epoxy resin material constructed by a multistage molecular chain cross-linked network and a preparation method, and the epoxy resin material realizes synergistic improvement of insulation and mechanical properties. Epoxy resin monomers with different rigid and flexible group contents and different chain lengths under the same chain structure are combined according to a certain proportion and are mixed into a homogeneous-phase resin matrix at a high temperature, and then the homogeneous-phase resin matrix and an anhydride curing agent are subjected to cross-linking curing at the high temperature to prepare the epoxy insulating material. The rigidity and flexibility of an epoxy cross-linked network are regulated and controlled by utilizing the multi-rigid group and multi-epoxy group of a short-chain resin monomer in a resin matrix and the multi-active hydroxyl and high-flexibility ether bond content of a long-chain resin monomer, and a charge barrier is constructed. Finally, the epoxy resin material with high mechanical property and high electrical insulation property is prepared, and the insulation property and the mechanical property are synergistically improved.
Owner:HEFEI UNIV OF TECH +1

MWW molecular sieve and preparation method thereof

The invention discloses an MWW molecular sieve and a preparation method thereof, and the preparation method comprises the following steps: (a) mixing an alkali source, water, an aluminum source, a template agent and a silicon source to form a mixture A; (b) adding nano cellulose into the mixture A to form a mixture B, and pretreating, crystallizing and drying the mixture B to obtain the MWW molecular sieve. The preparation method disclosed by the invention is simple and convenient, easy to industrialize and wide in application prospect, and the MWW molecular sieve with the single-layer structure is prepared. The MWW molecular sieve with a single-layer structure can expose more active sites, promotes diffusion and mass transfer, shows excellent performance in many reaction processes, and particularly shows high activity and stability in a reaction with macromolecules as a substrate.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Spherical inorganic particles having surface bumps formed thereon, and method of manufacturing same

The inorganic particle according to the present invention is composed of aggregation of crystalline and amorphous small particles and has a spherical and smooth surface. The spherical appearance, low crystallinity and narrow particle size distribution of inorganic particle are more advantageous in reducing scratch defects in the CMP process. In addition, since the small particles on the surface of the inorganic particle provide more active sites, the inorganic particle has an excellent removal rate, so it is advantageous as a next-generation CMP abrasive.
Owner:BEAD ORIGIN INC +1

Environment-friendly self-repairing single-component waterborne polyurethane waterproof coating and preparation method thereof

The invention provides an environment-friendly self-repairing single-component waterborne polyurethane waterproof coating and a preparation method thereof. The environment-friendly self-repairing single-component waterborne polyurethane waterproof coating is prepared from the following components in percentage by mass: 35 to 45 percent of waterborne hyperbranched polyurethane resin, 10 to 15 percent of titanium dioxide, 15 to 20 percent of barium sulfate, 5 to 10 percent of modified quartz powder, 0.1 to 1 percent of a thickening agent, 0.2 to 0.3 percent of a sterilizing agent, 3.5 to 6.5 percent of an auxiliary agent and the balance of water. The waterproof coating contains certain fluorine atoms, so that a paint film has relatively stable long-acting hydrophobic performance after being dried, and the paint film can be kept clean and self-cleaning for a long time; in addition, the modified quartz powder has the effect of enhancing the mechanical property and stability of the paint film; and meanwhile, the paint film forms a compact network structure in the drying process, so that the paint film has relatively good flexibility and relatively high hardness. In addition, the components contain more active groups, so that the paint film can be self-repaired.
Owner:HEBEI CARPOLY PAINT CO LTD +1

Selective dry film for circuit board and preparation method of selective dry film

The invention relates to an selective dry film for a circuit board and a preparation method of the selective dry film. The selective dry film for the circuit board comprises the following components: acrylic resin, an active monomer, modified boron nitride, hyperbranched polyether, an auxiliary agent and a solvent, wherein the modified boron nitride is obtained by reacting a silane coupling agent, trifluoromethacrylic acid and glycidyl methacrylate with boron nitride. The hyperbranched polyether is a polymer of glycerol and glycidyl. Materials such as acrylic resin are adopted as main components and compounded with modified boron nitride, so that compatibility and stability among the components are improved, more active groups are introduced, a firmer cross-linked structure is obtained, the strength of the dry film is further improved, and improvement of properties such as adhesive force and precision is facilitated; and the method has important significance on development and popularization of selective dry film products.
Owner:GUANGDONG YANMO SOLUTION TECHNOLOGY CO LTD

Phase change energy storage material and preparation method thereof

ActiveCN120209789AHeat-exchange elementsPoly(ethylene glycol) dimethyl etherPolyethylene glycol
The invention belongs to the technical field of energy storage materials, and particularly relates to a phase change energy storage material and a preparation method thereof.The phase change energy storage material is prepared from 8-12 parts of phase change wax, 10-15 parts of ZnAl-LDH, 6-9 parts of SiC-CuS and 8 parts of polyethylene glycol dimethyl ether; according to the invention, the double-metal hydroxide and the phase-change wax are combined, interlayer water molecules and ionic bonds of the double-metal hydroxide can realize reversible phase change, the phase-change wax can be supported to reduce high-temperature flowing, the phase-change wax makes up for insufficient latent heat and improves energy storage capacity, and the combination of the double-metal hydroxide and the phase-change wax widens the phase-change temperature range and enhances cycle stability; in addition, Si-C loaded CuS nanosheets are introduced, energy can be transmitted under illumination or heat energy to assist storage, the smaller the size of the nanosheets is, the larger the specific surface area is, more active sites can be provided, the heat conduction efficiency is improved, complementation of all advantages of the material is achieved through a simple method, and good comprehensive performance is achieved.
Owner:内蒙古大航新能源有限公司

Surface modification method of Co-CeO2 abrasive based on coordination of silane coupling agent and surfactant

The invention relates to a surface modification method of a Co-CeO2 abrasive material based on coordination of a silane coupling agent and a surfactant. According to the method, in the modification of the chemically mechanical polished cerium dioxide abrasive, different types of surfactants are added by utilizing a method of combining a silane coupling agent and the surfactants, and more active sites are introduced on the surface of cerium dioxide through the silane coupling agent, so that the surface of the cerium dioxide is modified. And meanwhile, the surfactant is ionized to generate anions, so that the electrostatic repulsion among the nanoparticles is enhanced, the dispersity of the cerium dioxide abrasive is enhanced, and the polishing rate and the polishing quality are further improved. When the obtained material is used as an abrasive material, the removal rate is increased to # imgabs0 #, and compared with a traditional abrasive material, the removal rate is increased by about 40%.
Owner:HEBEI UNIV OF TECH

A catalyst for hydrogenating carbon dioxide to ethanol, its preparation method and application

The present invention discloses a catalyst for hydrogenating carbon dioxide to ethanol, its preparation method and application. The catalyst is composed of an active metal, a promoter and a carrier. The active metal is Cu, Co and Ga. The promoter is a combination of any one of Mn or K and Na. The carrier is a carbon carrier. Calculated by the weight ratio of the catalyst being 100%, the contents of each component are as follows: Cu 10-20%, Co 10-20%, Ga 5-10%, Na 1-3%, Mn or K 1-3%, and the balance is the carrier. The introduction of the carbon carrier in the catalyst of the present invention is beneficial to the dispersion of the active metal. At the same time, the electronic effect of the carbon carrier creates more active site interfaces of the active components. The structural effect and the electronic effect of the carbon carrier promoting metal dispersion play a synergistic role, improving the selectivity of the target product. The preparation method of the catalyst of the present invention is simple, the preparation process is short, and it is environmentally friendly and easy to scale up.
Owner:SHAANXI YANCHANG PETROLEUM GRP

Fe3O4-V2O5 ultramicro composite foam nano-enzyme for serum creatinine detection and preparation method and application of Fe3O4-V2O5 ultramicro composite foam nano-enzyme

The invention discloses Fe3O4-V2O5 ultramicro composite foam nano-enzyme for serum creatinine detection as well as a preparation method and application of the Fe3O4-V2O5 ultramicro composite foam nano-enzyme, and belongs to the technical field of serum creatinine detection and nano-enzyme preparation. Comprising the following steps: (1) dissolving vanadium dichloride, ferric trichloride hexahydrate and cane sugar in an ethanol solution, then adding a phytic acid aqueous solution, and drying to obtain a first solid; and (2) placing the first solid in a Joule thermal device graphite sample table, and carrying out rapid Joule thermal shock in an air atmosphere to obtain the Fe3O4-V2O5 ultramicro composite foam nano-enzyme. The sucrose is used as a template agent, so that the formation of an ultramicro composite foam structure is promoted, the specific surface area of the material is remarkably increased, and more active sites are provided. The synergistic effect between Fe3O4 and V2O5 improves the catalytic activity of the active site. The porous structure effectively prevents agglomeration of nano-enzyme, and provides more channels for rapid recognition and reaction of serum creatinine.
Owner:THE FIRST AFFILIATED HOSPITAL OF ZHEJIANG CHINESE MEDICAL UNIVERSITY

Doped perovskite catalyst with noble metal exposed on surface, preparation method and application thereof

The invention discloses a doped perovskite catalyst with a noble metal exposed on the surface, a preparation method and application thereof, belongs to the technical field of catalytic materials, and particularly relates to application in catalytic removal of volatile organic compounds. The method comprises the following steps: performing composite molding on rare earth elements / alkaline earth metals, transition metals and noble metals by adopting a sol-gel method, and performing strong acid surface etching and other operations. The surface of the catalyst is provided with a noble metal nanocluster or noble metal nanoparticle structure, so that the surface area is increased, more active sites can be provided, the adsorption of reactant molecules is enhanced, and the conversion rate and selectivity of a catalytic reaction are further improved. Based on the structure and performance advantages, the catalyst disclosed by the invention can be used for efficiently removing volatile organic compounds, can effectively reduce the initial temperature of the catalytic oxidation reaction of the volatile organic compounds, and has a wide application prospect in treating various industrial processes needing high-temperature and efficient catalysis.
Owner:JILIN UNIVERSITY

Preparation method and application of bifunctional heterojunction catalyst for AEM electrolyzed water

The invention discloses a preparation method of a bifunctional heterojunction catalyst for AEM electrolyzed water. The method comprises the following steps: step 1, mixing multi-walled carbon nanotubes, deionized water, absolute ethyl alcohol and inorganic acid; step 2, putting the mixed solution in the step 1 into an ultrasonic machine to form a porous structure and more active adsorption sites; step 3, carrying out freeze drying treatment on the mixed solution treated in the step 2; step 4, mixing the dried multi-walled carbon nanotubes with acetylacetone salt, and uniformly grinding the mixed powder; and step 5, putting the powder obtained in the step 4 into a tubular furnace, and carrying out heat treatment in the atmosphere of H2 / Ar to obtain the PtFeCoNiMoZr / ZrO heterojunction catalyst. The catalyst has a remarkable catalytic effect on HER and OER reactions, and meanwhile, stable electrolysis which stably runs for 200 hours in an AEM electrolytic cell under the current density of 1200 mA / cm < 2 > is successfully realized.
Owner:CENT SOUTH UNIV

Monatomic iron and ferric oxide cluster synergistic graded porous hollow carbon fiber catalyst as well as preparation method and application thereof

The invention belongs to the technical field of electrocatalytic nitrate reduction catalysts, and particularly relates to a graded porous hollow carbon fiber catalyst with synergistic monatomic iron and ferric oxide clusters as well as a preparation method and application of the graded porous hollow carbon fiber catalyst. The preparation method specifically comprises the following steps: stirring polyacrylonitrile and polymethyl methacrylate in an organic solvent to obtain a spinning precursor solution; the preparation method comprises the following steps: taking ferrous sulfate heptahydrate and 1, 10-phenanthroline as ligands, and stirring in an organic solvent to obtain a metal organic ligand; the preparation method comprises the following steps: stirring a spinning precursor solution and a metal organic ligand, obtaining a metal precursor-loaded composite fiber through an electrostatic spinning technology, and then carrying out pre-oxidation and high-temperature pyrolysis to obtain the composite fiber. The prepared carbon fiber has good conductivity and a unique hollow hierarchical porous structure, transmission of reactants is greatly promoted while more active sites are exposed, the carbon fiber serves as a monatomic synergistic cluster catalyst carrier, rapid transmission of electrons is facilitated, and the electro-catalysis efficiency is effectively improved.
Owner:CHINA UNIV OF MINING & TECH (BEIJING) +1

Curing agent for formaldehyde-free substrate and preparation method and application thereof

The present invention belongs to the technical field of artificial boards, and relates to a curing agent for a formaldehyde-free substrate, which is composed of 5-10wt% of methyl ethyl ketone oxime, 20-30wt% of polyacrylamide, and the balance of water by weight percentage. A preparation method and application of the curing agent for the formaldehyde-free substrate are also disclosed. The curing agent for the formaldehyde-free substrate disclosed by the present invention has good sealing property, can reduce the viscosity of isocyanate, extend the application period, and improve the fluidity and dispersibility of spray glue. By sealing the free isocyanate group, the pre-curing during drying is reduced, and the isocyanate is unsealed during high-temperature hot pressing, and the isocyanate is cured quickly, the hot pressing efficiency is improved, the hot pressing time is shortened, and the water loss is reduced; more active isocyanate groups are retained in the adhesive, the bonding performance and water resistance are improved, the amount of isocyanate glue applied is reduced, and the reaction with water is reduced. The present invention can also effectively improve the production capacity of the formaldehyde-free floor substrate and reduce the cost; by increasing the moisture content, the expansion or contraction degree caused by the change of humidity in the external environment is reduced, and the dimensional stability is improved.
Owner:DARE WOOD BASED PANEL GRP

Fe-Sn diatomic site catalyst and preparation method thereof

The invention relates to the technical field of oxygen reduction catalysts, in particular to a Fe-Sn diatomic site catalyst and a preparation method thereof.The Fe-Sn diatomic site catalyst comprises a nitrogen-containing carbon matrix, Fe atoms and Sn atoms, the Fe atoms and the Sn atoms are loaded on the nitrogen-containing carbon matrix, and the nitrogen-containing carbon matrix is formed by polymerizing and carbonizing dopamine hydrochloride. The Fe-Sn double-atom site catalyst provided by the invention prevents metal atom agglomeration, has more active sites, and shows excellent catalytic activity and stability in ORR reaction.
Owner:CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES

Preparation and application of amino-functionalized polyion liquid catalyst

The invention discloses preparation and application of an amido-functionalized polyionic liquid catalyst, vinyl imidazole hydrobromide and N-(4-vinyl) benzyl diethylamine are used as monomers, N, N '-methylene bisacrylamide is used as a cross-linking agent, and the amido-functionalized polyionic liquid catalyst is prepared through a free radical copolymerization method. The imidazole / amido functionalized cross-linked PILs with multiple active sites are prepared by one-step synthesis through a hydrothermal polymerization method. The catalyst has catalytic active sites of amido, imidazolyl and Br, so that the catalyst can efficiently catalyze the cycloaddition reaction of CO2 and epoxide at 80 DEG C and normal pressure in the absence of a solvent and a co-catalyst.
Owner:ZHEJIANG SCI-TECH UNIV

High edge protection type cathode electrophoretic coating and preparation method thereof

The invention discloses a high edge protection type cathode electrophoretic coating and a preparation method thereof. Epoxy resin and a cyclic hydroxyl compound are subjected to a chain extension reaction, and a cyclic substituent group is introduced; adding amine chain extension reactants containing multiple active hydrogen into the chain extension product to form a local branched structure; the preparation method comprises the following steps: carrying out amination modification by adopting an aliphatic micromolecular amine mixture to obtain modified epoxy resin with a short-chain comb-type branched structure; sequentially adding a curing agent, a reinforcing material and a neutralizer, and continuously stirring to form a stable resin emulsion; and mixing the color paste, the resin emulsion and pure water according to a mass ratio to obtain the coating. By optimally designing the resin structure, on one hand, coating film flowing in the curing process is inhibited, sufficient film thickness and protection force of the edge are ensured, and on the other hand, when the edge corrosion resistance is improved, the mechanical performance, chemical performance and appearance quality of a coating in a non-edge area are prevented from being sacrificed, the overall performance is cooperatively improved, and the multi-working-condition service requirement of an automobile is met.
Owner:ZHEJIANG MINGFU METAL COATING TECH CO LTD

Application of triazole formamide, perovskite precursor solution as well as preparation method and application of perovskite precursor solution

The invention belongs to the technical field of perovskite materials, and particularly relates to application of triazole formamide, a perovskite precursor solution and a preparation method and application of the perovskite precursor solution, triazole formamide serves as an additive to be added into perovskite, and triazole formamide is 1, 2, 4 triazole-3-formamide. According to the method, the homogenization of the large-area film is realized and the defects in the perovskite polycrystalline film are effectively passivated in the nucleation and crystallization process in the process of preparing the large-area perovskite polycrystalline film by using the small-molecule triazole formamide as the multi-active-site additive regulation and control solution method; therefore, the photoelectric conversion efficiency and the stability of the perovskite photovoltaic miniature module are improved.
Owner:WUHAN UNIV

Multi-active ingredient herbicide compositions and methods

In one aspect, compositions or formulations for unwanted plant control are described herein. In some embodiments, a composition described herein comprises an active ingredient component, a surfactant component, and a solvent component. In some embodiments, a composition comprises Fenoxaprop-p-ethyl, and at least one of Carfentrazone-ethyl and / or Triclopyr-butoxyethyl ester.
Owner:DISCOVERY PURCHASER CORP

Application of Ag / Bi4O5Br2 / Ni-Fe double hydroxide composite SERS substrate in detection of CV in wastewater

This invention belongs to the field of SERS detection technology and relates to the application of an Ag / Bi4O5Br2 / Ni-Fe double hydroxide composite SERS substrate in the detection of CV in wastewater. First, a Bi4O5Br2 / Ni-Fe double hydroxide is prepared, and silver nanoparticles are loaded onto its surface using a liquid-phase chemical reduction method. This material combines the LSPR effect of silver nanoparticles with the interfacial coupling and multiple active sites of the Ni-Fe double hydroxide, enabling the regulation of interfacial charge transfer and enhancing molecular adsorption. Utilizing the excellent adsorption and enrichment properties of Bi4O5Br2, a highly efficient charge transport system is synergistically constructed from multiple components, improving the SERS chemical enhancement effect and amplifying the CV Raman signal. This invention overcomes the shortcomings of weak signals and insufficient stability of single substrates, achieving sensitive detection of trace CV in water. The substrate preparation process is simple, environmentally friendly, and highly practical, showing broad application prospects in the field of trace CV analysis in aquatic environments.
Owner:LIAONING UNIVERSITY

A flame retardant and anti-drip nylon material and its preparation method and application

The present invention discloses a flame retardant and anti-melting drip nylon material and its preparation method and application. The flame retardant and anti-melting drip nylon material provided by the present invention is obtained by polymerization reaction of POSS flame retardant and anti-melting drip salt, phosphorus flame retardant salt and nylon salt. The present invention introduces a phosphorus and silicon flame retardant and anti-melting drip system containing rich active groups into the main chain of nylon macromolecules by polymerization means, and the flame retardant and anti-melting drip component is connected to the nylon matrix through chemical bonds, which solves the migration problem of small molecular components; the silicon-based flame retardant and anti-melting drip component containing multiple active amino groups can form branched nylon macromolecules, which can solve the reduction of nylon viscosity caused by the introduction of flame retardant monomers and improve the anti-melting drip performance of nylon materials.
Owner:新兴际华(上海)工程科技研究院有限公司

High-level disinfectant and preparation method thereof

The invention belongs to the technical field of disinfectants and discloses a high-level disinfectant and a preparation method thereof.The high-level disinfectant is prepared from, by mass, 0.1%-3% of phthalic dicarboxaldehyde, 0.2%-0.8% of chelating agent, 2%-5% of penetrating agent, 0.3%-2% of modified starch, 1%-2% of acrylic polymer, 0.1%-0.3% of single-chain quaternary ammonium salt, 0.1%-0.3% of double-chain quaternary ammonium salt, 0.4%-5% of corrosion inhibitor and the balance purified water. Modified starch and polyacrylic acid are fully dissolved in a high-temperature stage, molecular chains are fully expanded, more active sites are exposed, and then the temperature is gradually reduced, so that the molecular chains are orderly arranged, a compact and uniform network structure is formed, and effective release of bactericidal components is ensured. Meanwhile, the single-chain quaternary ammonium salt and the double-chain quaternary ammonium salt are complementary through membrane destruction and internal destruction respectively and have a synergistic effect with the o-phthalaldehyde, so that the sterilization effect is remarkably improved.
Owner:TONGXI GRP CO LTD

Preparation method of curcumin

The invention discloses a preparation method of curcumin, and belongs to the technical field of natural product extraction. The method comprises the following steps: firstly, adopting a modified deep-eutectic solvent into which propyl gallate is introduced as an extraction medium, and realizing high-selectivity extraction of curcumin through a special molecular structure of the modified deep-eutectic solvent; then the ultrasonic-microwave coupling technology is combined, so that the extraction efficiency is remarkably improved; finally, the modified molecularly imprinted polymer with magnetism is used for precise purification, the material has the specific recognition capacity and the rapid magnetic separation characteristic, polyethylene glycol is introduced to serve as a pore-foaming agent, and more active sites are provided for adsorption of curcumin molecules. According to the method disclosed by the invention, through collaborative innovation of all links, the whole process optimization from extraction to purification is realized, the product purity and the extraction efficiency are remarkably improved, the energy consumption and the solvent pollution are greatly reduced, and a reliable solution is provided for industrial production of the high-quality curcumin.
Owner:SHAANXI NATURAL HEALTHCARE GRP CO LTD

A fusion film-wrapped composite nanodelivery system, and a preparation method and application thereof

PendingCN122297701AFusobacteriaDrug release
This invention discloses a composite nanodelivery system encapsulated in a fusion membrane, its preparation method, and its applications. The nanodelivery system comprises a Ti3C2 / TiO2 / CuInS2 composite material, oxaliplatin loaded thereon, and a fusion membrane encapsulating the outer layer; the fusion membrane is formed by the fusion of Fusobacterium nucleatum extravesicles and M1 macrophage membranes. This invention also discloses a method for preparing the nanodelivery system, including the steps of preparing the Ti3C2 / TiO2 / CuInS2 composite material, preparing the fusion membrane, loading oxaliplatin, and encapsulating it in the fusion membrane. The nanodelivery system prepared by this invention exhibits pH-responsive drug release characteristics, generating H2S in the tumor microenvironment and H2 under light irradiation, while also possessing photocatalytic activity. This invention combines chemotherapy, photoelectrocatalytic therapy, and the regulation of multiple active substances, and can be used to prepare drugs for treating malignant tumors of the digestive system.
Owner:NINGBO MEDICAL CENT LIHUILI HOSPITACL

Preparation method and application of pyrite carbon nitride composite material

The invention discloses a preparation method and application of a pyrite carbon nitride composite material. Crushed and sieved natural pyrite and carbon nitride obtained through pyrolysis are fully mixed and subjected to ball milling treatment, and the pyrite and carbon nitride composite material is obtained. The characterization of the ball-milled pyrite carbon nitride composite material through XRD, XPS and the like proves that the natural pyrite and the carbon nitride material are successfully compounded. New bonds such as Fe-N and C-S-C bonds are generated in the ball milling process, electron distribution and an electron path of the catalyst are changed, interface electron transfer is enhanced, and the composite material can be uniformly distributed, the specific surface area is increased and more active sites can be exposed in the ball milling process, so that a very good catalytic degradation effect is achieved, sulfamethoxazole of 10 mg / L can be completely catalytically degraded within 5 min, and the service life of the sulfamethoxazole catalyst is prolonged. And the catalyst and persulfate are less in dosage, the preparation process of the catalyst is simple, and the catalyst has the characteristics of low cost and high efficiency.
Owner:XIANGTAN UNIV

Covalent triazine framework polymer nanosheets for cathode materials in lithium-sulfur batteries

The present disclosure belongs to the technical field of lithium-sulfur batteries, and discloses covalent triazine framework polymer nanosheets for cathode materials in lithium-sulfur batteries. The hexaazatriphenylenehexacarbonitrile monomer on the surface of sodium chloride is polymerized through high temperature triazine, sodium chloride crystal is removed to obtain covalent triazine framework polymer nanosheets product, and cathode materials in lithium-sulfur batteries are obtained after melting sulfur. The preparation method of the present disclosure is simple, has low cost, high yield, and uniform structure. The obtained material itself has a porous structure and numerous active sites. When used in lithium-sulfur batteries, it can promote the rapid conversion of lithium polysulfides, effectively suppress the shuttle effect, and improve the rate performance and cycle performance of lithium-sulfur batteries.
Owner:ANHUI UNIV

A composite skin care active and method of making same

PendingCN122440485AMedicinePolyactive
The application discloses a kind of composite skin care active raw materials and preparation method thereof, belong to cosmetic raw material technical field.The composite skin care active raw material includes by mass percentage: anti-sugar active component 1.0%-10.0%, firming and lifting active component 0.5%-8.0%, antioxidant active component 1.0%-4.0%, penetration promoting component 0.5%-2.0%, and the balance is cosmetic grade solvent.The application realizes the four synergistic effects of anti-sugar, firming, antioxidant and penetration promotion by compounding multiple active components at a specific ratio, the system is stable, not delaminated, not discolored, skin feels fresh, the preparation process is mild and simple, easy to industrial production, and can be widely used in essence, emulsion, cream, mask and other skin care products.
Owner:傅佳乐

Nitrogen-carbon anchored hollow structure catalyst and preparation method and application thereof

The invention relates to the technical field of catalysts, in particular to a nitrogen-carbon anchored hollow structure catalyst as well as a preparation method and application thereof. The nitrogen and carbon anchored hollow structure catalyst comprises a MoS2 carrier and active metal M particle doped nitrogen and carbon loaded on the MoS2 carrier, and is represented by M (at) NC / MoS2, and M is selected from one of Ni and Pt; the mass of the active metal M particles accounts for 5-15% of the mass of the MoS2 carrier. By constructing a nitrogen-carbon anchoring hollow structure, active metal M particles are uniformly doped in the nitrogen-carbon structure and are loaded on the MoS2 carrier, so that a synergistic effect of multiple active sites is realized, and the activity and the stability of the catalyst in a water gas shift reaction are improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Millimeter-sized catalytic material with hollow spherical structure multi-active component loading sites and preparation method thereof

The application discloses a kind of millimeter level catalytic material with hollow spherical structure multi-active component loading site and preparation method thereof, the oil phase containing molecular sieve material and the water phase containing aluminum sol are formed using coaxial double-dropper forming device, and the gel ball of oil-in-water structure is obtained in situ, and after aging, calcination, the hollow spherical alumina carrier MS@Al2O3 containing molecular sieve material is obtained.The soluble salt of metal oxide is loaded on the surface and pore of carrier by one-step vacuum-spraying method, and then the surface-loaded metal soluble salt is oxidized into metal oxide by gas phase oxidation, to obtain catalytic material MOx / MS@Al2O3.The catalytic material has physical partition site, and different active components are loaded inside and outside the hollow carrier.The catalyst is suitable for industrial series reaction.
Owner:BEIJING UNIV OF CHEM TECH

Silver cluster-based metal-covalent organic framework material as well as preparation method and application thereof

The invention relates to the technical field of catalytic materials, and discloses a silver cluster-based metal-covalent organic framework material as well as a preparation method and application thereof. The silver cluster-based metal-covalent organic framework material provided by the invention is a crystalline metal-covalent organic framework material with a two-dimensional laminated structure and a pore channel structure, and has a pyrazole ring trinuclear silver complex group provided by a pyrazole ring trinuclear silver complex monomer and an imidazole linking group formed by condensation of a pyrene monomer and ammonium acetate. The two forms double active sites, and the pyrene monomer endows the material with light absorption capacity, so that the material has the potential of being used as a multi-active-site photocatalyst; the preparation method of the material is simple in step, mild in reaction condition and suitable for industrial application; the silver cluster-based metal-covalent organic framework material can be used for preparing ethylene through photocatalytic acetylene reduction, has the advantages of high ethylene yield, good material stability, continuous catalysis capability and inactivation resistance, is beneficial to promoting green synthesis of ethylene, and meets the industrial requirements of ethylene.
Owner:SOUTH CHINA NORMAL UNIV

Nitrogen-doped anthryl-containing porous organic polymer and preparation method thereof

PendingCN120309935AAnthracenePolyactive
The invention relates to the technical field of porous organic polymers, in particular to a nitrogen-doped anthracene-based porous organic polymer and a preparation method thereof.9, 10-dibromoanthracene serves as an initial monomer raw material, coupling is conducted through a Suzuki coupling reaction, and the novel nitrogen-doped anthracene-based porous organic polymer is designed and synthesized through Cichibabin; a unique framework of the porous polymer endows the porous polymer with relatively good electron donating ability, and the porous polymer has a large specific surface area and multiple active sites, and an extensible pi-pi conjugated network realizes selective recognition of transition metal ions, so that the problem that an existing porous polymer is insufficient in application in the field of heavy metal ion sensing is solved.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY