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137 results about "Polyactive" patented technology

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

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

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

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

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

One-dimensional chain polymer with multiple active sites as well as preparation method and application of one-dimensional chain polymer

The invention belongs to the field of synthesis of electrode materials, and particularly relates to a one-dimensional chain polymer with multiple active sites as well as a preparation method and application of the one-dimensional chain polymer. The polymer is prepared by carrying out dehydration condensation reaction on 1, 8, 4, 5-naphthalene tetracarboxylic anhydride and 2-nitro-1, 4-phenylenediamine in an inert atmosphere, and after the reaction is finished, washing with deionized water and carrying out suction filtration to obtain a target product. The molecular structure of the material simultaneously contains multiple oxidation-reduction active centers such as carbonyl and nitryl, so that efficient Zn / collaborative storage can be realized. When being used as a positive electrode of a zinc ion battery, the composite material shows high discharge capacity and long cycle stability, and an assembled flexible battery also has high volume energy density, excellent repeated bending resistance and chemical self-charging capacity in air, and has wide application potential in the field of wearable electronic equipment. The synthesis process is simple, raw materials are easy to obtain, reproducibility is good, and the method is suitable for large-scale production.
Owner:CHANGZHOU UNIV

Preparation method and catalytic application of antimony trioxide with porous structure

The preparation method of the antimony trioxide with the porous structure comprises the following steps: adding an antimony trioxide matrix into a montmorillonite loading agent which is 5-8 times of the total amount of the antimony trioxide matrix, stirring, carrying out suction filtration, and drying to obtain the antimony trioxide with the porous structure. An antimony trioxide matrix is constructed by adopting a double emulsion template method, meanwhile, montmorillonite is pretreated, interlayer water is damaged by preheating at 210-230 DEG C, then the temperature is increased to 350 DEG C, heat preservation is performed for 1 h, an interlayer structure is stripped through thermal expansion, the specific surface area is increased, more active sites are exposed, and the specific surface area is increased. And dopamine / carbon nanotube composite modification: dopamine hydrochloride is subjected to self-polymerization under a weakly alkaline condition to form a polydopamine (PDA) coating layer.
Owner:YIYANG CITY HUACHANG ANTIMONY IND

Flotation collecting agent for refractory copper oxide ore and preparation method of flotation collecting agent

PendingCN120984440AFlotationCopper oxideSolvent
The invention relates to the technical field of beneficiation collecting agents, and discloses a flotation collecting agent for refractory copper oxide ore and a preparation method of the flotation collecting agent. The flotation collecting agent comprises, by mass, 59.3% of a chelating main agent, 19.76% of dimethyl phthalate, 15.81% of a pH response type segmented copolymer, 3.95% of 0 # light diesel oil, 0.24% of a quantum dot additive, 0.4% of shell source polypeptide, 0.08% of a magnetic recycling agent, 1.19% of an emulsion stabilizer, 0.04% of a calcium ion activating agent, 0.4% of tetrabutylammonium bromide and 23.73% of deionized water. Wherein the total mass percentage of other components except the deionized water is 100%, and the deionized water is independently added into the solid formula as a solvent to form the flotation collecting agent for the refractory copper oxide ore. According to the flotation collecting agent for the refractory copper oxide ore and the preparation method of the flotation collecting agent, through the design of multi-active-group collaboration, an intelligent carrier and the like, the flotation efficiency and selectivity of the refractory copper oxide ore are improved, prevulcanization is not needed, agent recovery and environmental protection are achieved, and a new scheme is provided for complex ore development.
Owner:TIBET JULONG COPPER CO LTD

Vanadium-doped modified sodium ferric pyrophosphate material based on spray drying, its preparation method and application

This invention discloses a vanadium-doped modified sodium iron pyrophosphate material based on spray drying, its preparation method, and its applications. The material exhibits a spherical porous morphology with a particle size between 1 and 10 micrometers; its chemical formula is: Na. 4‑x Fe 3‑x V x (PO4)2P2O7, where 0 < x ≤ 0.1. It is prepared by spray drying, ensuring atomic-level mixing of vanadium and iron through a uniform and stable complexed ion solution; and promoting the formation of a porous spherical morphology through the volatilization of the acidic substrate during rapid drying. The combination of spray drying and trace vanadium doping technology is beneficial for activating more active sodium sites in the sodium iron pyrophosphate cathode material, improving the reversible sodium insertion / extraction capacity, while promoting sodium ion diffusion, reducing polarization voltage, and improving the cycle stability of the material.
Owner:ZHEJIANG UNIV

Preparation of HFO-1234yf by dehydrofluorination of HFC-245eb

The invention discloses a method for preparing HFO-1234yf by dehydrofluorination of HFC-245eb, which comprises the following steps: under the action of a catalyst, dehydrofluorination of HFC-245eb is carried out to obtain HFO-1234yf; the catalyst comprises an aluminum fluoride coated SBA-15 carrier and multi-metal active components A and B loaded on the carrier, A is Cr, and B is one or more than two of Mg, Fe, Ni, Co and Zn. According to the invention, high dispersity of active sites and rapid mass transfer of reactants / products are ensured by utilizing high specific surface area and uniform pore channels of SBA-15. The multi-metal nanoparticles provided by the invention have higher thermal stability. The strong interaction among various metals can improve the Tanchmann temperature of the nano particles, so that the nano particles can better maintain fine sizes at the reaction temperature, and more active sites are exposed.
Owner:ZHEJIANG QUHUA FLUOR CHEM CO LTD +1

Iron-doped biochar supported copper sulfide, preparation method thereof and application of iron-doped biochar supported copper sulfide in removal of orange yellow G by activated peroxodisulfate

The application discloses iron-doped biochar loaded CuS, a preparation method thereof and application of the iron-doped biochar loaded CuS in removal of orange G by activated peroxodisulfate. The iron-doped biochar loaded CuS comprises porous biochar, and Fe2O3 particles, CuS and FeS loaded on the surface and in the pores of the porous biochar. In the application, transition metals are used to improve the surface properties of BC, introduce new active sites, obtain modified biochar, and then load CuS on the surface of the modified biochar, so that the PS catalyst with multiple active sites can be obtained, and the problems of low catalytic performance of original BC and agglomeration and deactivation of CuS can be solved.
Owner:SUZHOU UNIV OF SCI & TECH

Preparation method and application of bowl-shaped polyaniline microspheres

The invention relates to a preparation method and application of bowl-shaped polyaniline microspheres, and polyaniline microspheres with regular bowl-shaped morphology are synthesized by accurately controlling key parameters such as the oxidation degree of aniline monomers, the template size, the dosage of a polymerization initiator and the like. The bowl-shaped polyaniline microspheres are formed by self-assembly of polyaniline molecules, and the interior of each bowl-shaped polyaniline microsphere is provided with a continuous and uniformly-distributed nano-scale pore structure. Due to the unique bowl opening and bowl bottom sizes in the bowl-shaped microsphere structure, the microsphere has the characteristics of concave cavity, micron hollow hemisphere shape, nanoscale bowl wall thickness, high surface area-volume ratio and high porosity at the same time, more active sites can be provided, and the bowl-shaped microsphere structure can be used for supercapacitor electrodes, gas sensor electrodes and electromagnetic shielding materials.
Owner:DONGHUA UNIV

Amphiphilic block copolymer self-assembled prodrug based on D-penicillamine as well as preparation method and application of amphiphilic block copolymer self-assembled prodrug

The invention discloses an amphiphilic block copolymer self-assembled prodrug based on D-penicillamine as well as a preparation method and application of the amphiphilic block copolymer self-assembled prodrug. The amphiphilic block copolymer self-assembled prodrug based on D-penicillamine has a structure as shown in a formula (I). The preparation method comprises the following steps: synthesizing an amphiphilic block copolymer easy for sulfydryl modification, carrying out solution self-assembly to form vesicles, and modifying D-penicillamine to prepare the D-penicillamine prodrug polymer vesicles. According to the invention, the exchange reaction of a sulfydryl disulfide bond is creatively applied, the D-penicillamine with copper consumption capacity is connected through the disulfide bond to form a macromolecular prodrug, the method provides a new solution for the chemical modification problem of multi-active-functional-group drugs, and breaks through the delivery mode of physically encapsulating the D-penicillamine by nanoparticles; the stability and toxic and side effects of the D-penicillamine are improved. In addition, the D-penicillamine prodrug polymer vesicle can entrap other drugs, and has the potential of copper consumption combined therapy.
Owner:SOUTH CHINA UNIV OF TECH

A synthesis method of a bifunctional PdCu catalyst for electrocatalytic HMF hydrogenation coupling oxidation

This invention discloses a method for synthesizing a bifunctional PdCu catalyst for electrocatalytic hydrogenation-coupled oxidation of HMF. The method involves chemically oxidizing a copper foam framework to induce in-situ growth of nanowire structures on the surface of the copper foam nanowire substrate. A palladium salt is used as the palladium source and loaded onto the copper foam nanowire substrate in a cluster form. The prepared catalyst possesses a nanowire structure that facilitates the loading of Pd clusters, generating more active sites. The Pd clusters provide active hydrogen (H*) to accelerate electron transport, thereby achieving efficient hydrogenation of high-concentration HMF to BHMF at the cathode. Simultaneously, when applied to the anode, it enables efficient HMF conversion to FDCA. This material is suitable for the continuous production of high-value-added products FDCA and BHMF through electrocatalytic hydrogenation-coupled oxidation. The catalyst exhibits high activity, high stability, and high electron utilization, demonstrating significant potential for industrial application.
Owner:FUZHOU UNIV

Heteropolyacid metal MOF heterogeneous catalyst containing copper, silicon and tungsten and preparation method of heteropolyacid metal MOF heterogeneous catalyst

PendingCN121851401APtru catalystHeteropoly acid
The invention belongs to the technical field of heterogeneous catalysts for synthesis of polycaprolactone-polyethylene glycol segmented copolymers, and particularly relates to a copper-silicon-tungsten-containing heteropoly acid metal MOF heterogeneous catalyst and a preparation method thereof. The polyacid type metal-organic framework heterogeneous catalyst can effectively catalyze epsilon-caprolactone and PEG to carry out ring-opening copolymerization so as to prepare a related technology of the PCL-PEG segmented copolymer, and the related technology is not reported yet. Aiming at the problems, the invention provides the copper-silicon-tungsten-containing heteropolyacid metal MOF heterogeneous catalyst, the chemical formula of the copper-silicon-tungsten-containing heteropolyacid metal MOF heterogeneous catalyst is [Cu2 (L) 3 (SiW12O40) (H2O) 4] n, and the catalyst is a heterogeneous catalyst, not only inherits the characteristics of high specific surface area and adjustable structure of an MOF material, but also has excellent catalytic activity and acidity of heteropolyacid, provides more active sites for catalytic reaction, and has a good application prospect. Compared with a traditional homogeneous catalyst, the catalyst has the advantage that the catalyst can be easily separated from and recycled from a reaction system.
Owner:CHANGZHOU UNIV

Intrinsic flame-retardant polyurea resin as well as preparation method and application thereof

The invention discloses intrinsic flame-retardant polyurea resin as well as a preparation method and application thereof, and belongs to the technical field of flame-retardant polyurea protective coatings. The intrinsic flame-retardant polyurea resin comprises a component A and a component B. The component A comprises a prepolymer prepared from reactive phosphorus-containing resin and isocyanate, a liquid phosphate flame retardant and amino polyether, and the component B comprises amino polyether, an intumescent halogen-free flame retardant, an amino chain extender, a coupling agent and a catalyst. The phosphorus-containing resin with polyfunctional groups is introduced, participates in the polymerization reaction of the polyurea material, and is synergistically combined with the liquid flame retardant and the intumescent halogen-free flame retardant, so that the flame-retardant effect of the polyurea material is effectively improved, and meanwhile, the flame-retardant performance of the polyurea material is improved. A net structure formed by multiple active groups and an intumescent carbon layer structure formed in the intumescent flame retardant form a synergistic effect, so that the problem that a polyurea material is easy to drip is solved, and the intrinsic flame-retardant polyurea resin with obviously improved flame retardance and capability of ensuring the mechanical properties of the original polyurea material is obtained.
Owner:SHANDONG DONGKE CHEMI- IND & SCI CO LTD

Method for synergistically degrading organic pollutants by low consumption of persulfate through electro-enhanced activation of anode and cathode

The application discloses an electro-enhanced activation persulfate oxidation method for removing organic pollutants with low consumption through cooperation of anode and cathode, uses LaCoO3 modified Ti4O7 active electrochemical film rich in oxygen vacancy as an anode, and uses in-situ grown nano-carbon modified carbon felt as a cathode to construct an anode-cathode cooperative activation persulfate system, achieves 100% removal of sulfamethoxazole within 37.3 seconds, and the energy consumption is only 0.0015 kWh / m 3 ·order. The technology meets the demand of high flux (1061 L / m 2 ·h) for complete degradation of pollutants, and can also realize deep mineralization (89%) of pollutants at slightly lower flux (212.22 L / m 2 ·h). Compared with the prior art, the bipolar activation persulfate system of the application has the characteristics of significantly improving the space-time efficiency by using bipolar multi-active sites, solving the problems of low wastewater treatment capacity, poor mineralization and high energy consumption of the single-pole system, and efficiently treating actual marine aquaculture wastewater and domestic sewage. The application has excellent pollutant removal and mineralization efficiency, wide pH application range, good stability, long service life, and wide application prospect.
Owner:NANKAI UNIV

Suspension stabilizer with high yield value and high transparency, and preparation process and use thereof

A suspension stabilizer with high yield value and high transparency and a preparation process and use thereof, which relate to the field of suspension stabilizers. The suspension stabilizer includes the following components by mass fraction: water-soluble monomer 5.5%-70.5%; oil-soluble monomer 10.4%-83.1%; monomer with multiple active groups 0-18.7%; functional monomer 0-5.2%; graft-modified monomer 0-15.0%; emulsifier 0.5%-7.0%; and initiator 0.01-2.0%; wherein, the graft-modified monomer is a hydrophilic monomer and / or a hydrophilic group graft-modified monomer.
Owner:GUANGZHOU DX CHEM