208 results about "Catalysis" patented technology

The invention discloses a catalyst used for preparing acrylic acid and butyl ester by the dehydration of butyl lactate and a preparation method thereof. The catalyst is a composite catalyst, comprising a main catalyst A and auxiliary catalysts B, C, D and E, wherein, A is calcium sulphate, B is sulphuric acid, C is phosphate, D is alkaline matter and E is promoter. The preparation method comprises the steps as follows: five compositions A, B, C, D and E are sufficiently mixed, baked for 2-10 hours at the temperature of 200-800DEG C and formed for standby. The catalyst has high catalytic activation; under the catalysis of the catalyst, the molar yield reaches 75.1 percent and the molar selectivity of the acrylic acid and butyl ester reaches 71.5 percent. The preparation method has the advantages that the crystal structure of the main catalyst can be improved so as to be beneficial for carrying out the reaction; and the introduction of different auxiliary catalysts and quantities is helpful to improve the conversion ratio of the raw material and the product selectivity and is beneficial for improving the strength of the catalyst.

The invention relates to an installation for liquefying hydrogen, comprising a circuit for hydrogen to be cooled, a set of heat exchanger(s) in heat exchange with the circuit, a cooling system comprising a refrigerator with a cycle of refrigeration of a first cycle gas comprising helium and / or hydrogen, the circuit comprising at least one catalysis section so as to ensure conversion of the ortho-hydrogen into para-hydrogen, the circuit further comprising a first bypass portion bypassing at least one catalysis section, the downstream end of the circuit comprising two parallel branches that are not combined and are supplied respectively with the hydrogen that has passed through the first bypass portion and hydrogen that has passed through the catalysis section so as to provide two distinct hydrogen streams that have different relative proportions of ortho-hydrogen and para-hydrogen.

The present application relates to the technical field of plasma catalysis, and particularly relates to a method for catalytically converting methane and water into methanol and hydrogen under plasma conditions, a device used and a catalyst used. The bubbling-fluidized plasma reactor of the present application is formed by connecting a bubbling corona discharge plasma reactor at the lower part and a fluidized bed dielectric barrier discharge reactor at the upper part in series, and is filled with a catalyst in a discharge channel. Methane mixed with argon is preheated and then enters a gas bubbling column from a raw material inlet. A corona discharge is formed in the gas bubbles by a bubbling tip to generate plasma, so that the methane-water is preliminarily converted in cooperation. The gas after the preliminary conversion is introduced into the discharge channel to react under the action of the catalyst, and hydrogen and methanol are obtained by conversion.

This invention discloses an acetic acid-modified inorganic composite gel material and its preparation method, belonging to the field of organic material synthesis technology. The acetic acid-modified inorganic composite gel material comprises the following materials in parts by weight: 0.2-0.4 parts of acetic acid-Co3O4, 1.5-2.5 parts of acrylamide, 1-1.5 parts of glycerol, 0.05-0.1 parts of N-N-dimethylformamide, 0.25-0.5 parts of ammonium persulfate, 0.1-0.15 parts of sulfonated-Bi2O3, 0.6-0.9 parts of ethylenediamine, and 0.2-0.4 parts of PVP; the acetic acid-Co3O4 comprises materials in the following mass ratio: acetic acid:cobalt nitrate:thiourea:ammonium fluoride:sodium bicarbonate = 3-7:1.5-2.5:0.8-1.2:0.5-1:6; the sulfonated-Bi2O3 comprises materials in the following mass ratio: Bi2O3:sodium sulfite:H2O2:ammonium bicarbonate = 3-5:0.2-0.6:1-1.5:1. This material achieves efficient and stable catalysis for nitrogen reduction under mild conditions through structural defect regulation, interfacial functional group modification, heterojunction electronic regulation, and synergistic enhancement with organic gel.

The application discloses a polyester synthesis method and application thereof. The polyester synthesis method comprises the following steps: preparing a sol containing cellulose nanocrystals, and an alcohol solution containing an aluminum alkoxide; adding the alcohol solution into the sol to react; separating a solid phase to obtain a composite catalyst; and synthesizing polyester under the co-catalysis of the composite catalyst and diisopropyl bis(acetylacetonyl) titanate. The polyester synthesized by the method has low carboxyl content, high light transmittance, high mechanical property and hydrolysis resistance, and can be used for preparing a polyester film. The application also provides application of the polyester prepared by the method.

This invention discloses a flame-retardant rubber and its preparation method. The flame-retardant rubber, by weight, comprises: 45-65 parts of ethylene-vinyl acetate copolymer; 12-20 parts of ethylene propylene diene monomer (EPDM) rubber; 3-6 parts of maleic anhydride-grafted ethylene-vinyl acetate copolymer; 8-12 parts of phosphorus-modified nanocellulose; 2-5 parts of submicron zinc borate; 2-4 parts of melamine polyphosphate; 0.5-2.5 parts of graphene; 1-2.5 parts of phosphorus-containing flame-retardant plasticizer; and 1-4 parts of multifunctional acrylate crosslinking agent. This application replaces traditional melamine with melamine polyphosphate (MPP). MPP has higher thermal stability, its decomposition temperature matches the char formation window of P-NC more closely, and it has its own phosphorus source, enabling a complementary and continuous phosphoric acid supply with P-NC on both the time and temperature axes, thus solving the problem of insufficient phosphorus catalysis after reducing the amount of P-NC alone.

This invention discloses a quantitative method and apparatus for assessing the catalytic potential of silver iodide in artificial rain and snow enhancement based on cloud physics parameters, belonging to the field of atmospheric science and technology. The method includes: calculating and normalizing the total nucleation ratio of silver iodide particles to obtain a normalized nucleation conversion rate score; calculating the ice crystal potential ratio and supersaturation relaxation timescale that can effectively participate in the bergiron process after catalysis; calculating and normalizing the effective conversion time based on the ice crystal potential ratio and supersaturation relaxation timescale to obtain a normalized conversion rate score; calculating and normalizing the effective liquid water pathway to obtain a normalized liquid water content score; and weighted summing the normalized nucleation conversion rate score, normalized conversion rate score, and normalized liquid water content score to obtain a comprehensive catalytic potential score characterizing the quantitative results of the catalytic potential. This invention enables the quantitative assessment of the catalytic potential of cold clouds.

This invention belongs to the field of biosensor technology, specifically relating to an aflatoxin B1 sensor based on exchange catalysis and photocurrent polarity reversal, its preparation method, and its application. The sensor includes a reference electrode, a photosensitive substrate electrode, an AFB1-specific aptamer-trigger chain conjugate, a basement exchange catalytic nucleic acid amplification system, and an h-Zn1Cd5S-hairpin H conjugate. The sensor constructed by this invention is easy to operate, has a fast response speed, good repeatability, high detection sensitivity, and specificity. It can avoid interference from signal fluctuations, and its preparation method is simple, showing broad application prospects in aflatoxin B1 detection.

The present application relates to a kind of monodisperse core-shell type hybrid silica microspheres containing vinyl shell and its preparation and application. Specifically, using "two-phase method" strategy, monodisperse solid silica microspheres are used as matrix, vinyl triethoxysilane and tetraethyl orthosilicate are used as raw materials, lauryl amide propyl betaine and sodium subtiliporin are used as double-template pore-forming agent, under the catalysis of urea, sol-gel reaction occurs, a layer of porous hybrid shell containing vinyl functional group is constructed on the surface of solid silica microspheres, and core-shell type silica hybrid microspheres are formed. Because the shell contains a large number of vinyl functional groups, after hydrophilic modification with captopril, it is used as the adsorbent of hydrophilic interaction chromatography, and is applied to the selective enrichment of biological samples. The core-shell type silica hybrid microspheres prepared in the present application have uniform morphology, good monodispersity, and rich vinyl functional groups on the surface, which are easy to modify and apply subsequently.

The application relates to the technical field of fuel and additives thereof, in particular to alcohol fuel containing catalysis and additives thereof, the alcohol fuel containing catalysis disclosed by the application is composed of C1-C7 alcohol and hydrocarbon, a rare earth compound catalytic material is used in the fuel, the rare earth compound contains hydroxyl groups or phenyl groups or C5-C 25 groups or carboxyl groups or amine groups or metals, the alcohol fuel formula disclosed by the application has adjustable and high calorific values, can be well adapted to internal combustion engines or engines for testing, the alcohol fuel disclosed by the application is a potential new alternative energy source, and can solve the environmental protection problem of fossil fuels and accelerate fuel efficiency.

The application discloses a kind of medical titanium alloy material surface antibacterial functionalization processing methods, first by hydrothermal oxidation and high-temperature sintering processing in titanium alloy material surface construction TiO2 Nanometer sheet, then deposit W 18 O 49 Quantum dots are deposited on the TiO2 Nanometer sheet, and TiO2 / W 18 O 49 Heterojunction is constructed on the surface of titanium alloy.TiO2 / W 18 O 49 Heterojunction can efficiently catalyze the production of reactive oxygen species (ROS) under near-infrared light irradiation, achieving antibacterial function. The TiO2 / W 18 O 49 Heterojunction functionalized titanium alloy material surface, the irregular sheet structure of TiO2 Nanometer sheet can greatly increase the contact area of the material surface and the surrounding solution, and the W 18 O 49 Quantum dots have the characteristics of "single-atom-like catalysis", which can improve the ROS yield and further endow the medical titanium alloy surface with strong photodynamic antibacterial performance.

The application provides an electro-catalysis system applied to an anaerobic biological treatment technology, an electrode assembly and application. The electrode assembly comprises an electrode frame, a plurality of cathode electrode plates and a plurality of anode electrode plates. The cathode electrode plates and the anode electrode plates are fixed on the electrode frame at intervals. A plurality of electro-catalysis fillers are arranged at intervals along the height direction of the cathode electrode plates and the anode electrode plates. The electro-catalysis fillers are made of a plurality of "8" type woven products around a center rope. The "8" type woven product is made of modified carbon fiber filaments and a nylon wire framework. The electro-catalysis filler made of the modified carbon fiber filaments can guarantee the strength of the filler, greatly reduce the use amount of carbon materials, reduce the cost and have good corrosion resistance. Since the carbon fiber material has excellent specific surface area, the amount of microorganisms can be enriched, and the efficiency of electron transfer can be improved. Since the nylon wire framework is adopted for support, the form of the filler is guaranteed, and efficient operation of the electro-catalysis reaction is guaranteed.

The application discloses a kind of carbonic anhydrase catalysis CO2 Mineralization enhanced bamboo fiber composite material and preparation method thereof, belong to environmental protection material field.The composite material formula includes by weight parts 15-20 parts of terephthalic acid, 1,4-butanediol 16-25 parts, catalyst 0.2-1 part, bamboo fiber 50-55 parts, calcium chloride 5-8 parts, carbonic anhydrase 0.01-0.03 parts, pH regulator 1-2 parts, antioxidant 0.3-1 part.The preparation process is first used carbonic anhydrase mineralization bamboo fiber, and obtains mineralization bamboo fiber, and PBT is synthesized under the catalysis of catalyst to obtain mineralization bamboo fiber-PBT copolyester composite material.The composite material prepared by the scheme has the characteristics of degradability, low cost, good interfacial compatibility and excellent mechanical properties.

The present disclosure provides a supported copper-based single-atom catalyst and a preparation method and use thereof, belonging to the technical field of environmental catalysis. The preparation method includes the following steps: dispersing an organic ligand and a copper powder in acetonitrile, and conducting refluxing in a constant-temperature water bath to obtain a copper complex emulsion; conducting centrifugation and filtration on the copper complex emulsion in sequence to obtain a copper complex solution; mixing a support, the copper complex solution, and the acetonitrile, and conducting rotary evaporation on a resulting mixture to obtain a powder; and roasting the powder to obtain the supported copper-based single-atom catalyst. In the present disclosure, the copper powder is coordinated with the organic ligand and then supported on a surface of the support.

The present application belongs to the field of environmental functional materials and water treatment technology, and aims to provide a preparation method of ceramic membrane based on endogenous pore forming and catalysis of sludge containing algae. The method comprises the following steps: taking dewatered sludge of water supply plant in algae outbreak period of water source, drying, ball milling and sieving to obtain sludge powder; soaking and washing after using organic acid with complexing ability as heavy metal removal agent, pre-carbonization treatment, dry pressing into embryo, sintering into membrane sheet; primary activation treatment in weak oxidizing strong acid, washing and heating treatment for secondary activation to obtain ultrafiltration ceramic membrane product. The method is simple in operation steps, easy to implement and green and environmental protection; the prepared ceramic membrane has good separation performance and high mechanical strength, can catalyze oxidizing agent commonly used in water treatment while filtering, and free radicals are generated by decomposition to degrade organic matter; or catalyze common cleaning agent sodium hypochlorite during membrane cleaning to generate free radicals to strengthen the cleaning effect.

A polyether polyol combination for compression-resistant slow-rebound polyurethane foam, polyurethane foam and a preparation method thereof, comprising the following raw materials in parts by weight: polyether polyol A 60-90 parts, polyether polyol B 5-20 parts, polyether polyol C 10-20 parts, silicone oil surfactant 1.5-2.5 parts, chemical foaming agent 2.5-3.5 parts, amine catalyst 0.3-0.8 parts; polyether polyol A is a high-EO polyether polyol, with a hydroxyl value of 30-50 mg KOH / g, a functionality of 3, an EO content of 70%-80%, a primary hydroxyl group content of 40%-60%, and is prepared by DMC catalyst catalysis; polyether polyol B is a low-EO polyether polyol, with a molecular weight of 2500-3500, a hydroxyl value of 50-80 mg KOH / g, a functionality of 3, an EO content of 5%-10%, a PO content of 85%-92%, and is prepared by DMC catalyst catalysis; polyether polyol C is an EO-free polyether polyol, prepared by DMC catalyst catalysis. The polyurethane slow-rebound foam prepared by the application has good recovery time and excellent compression resistance, and is easy to implement and simple to operate.

The application belongs to the field of chemical catalysis technology, and discloses a catalyst for preparing butadiene by coupling ethanol, a preparation method and application. The application first proposes introducing carbonate or bicarbonate as a structure modifier in the synthesis process of rare earth phosphate, and then removing the carbonate or bicarbonate in the calcination process to form a porous carrier with a high specific surface area. Compared with the catalyst without introducing carbonate, the prepared carbonate / bicarbonate treated catalyst has a significantly higher specific surface area, thereby significantly improving the yield of butadiene. Subsequently, by loading a transition metal, the ethanol conversion rate is further improved, a high butadiene yield is achieved, and good industrial application prospects are achieved.

The embodiment of the application discloses a kind of adsorption energy prediction method and related device, at least involve machine learning in artificial intelligence etc., can be applied to catalysis field, environmental catalysis, energy conversion, chemical production, biomedical scene etc..The method provided in the application embodiment can save computing time, improve prediction accuracy, speed up the development process of new materials.Moreover, the adsorption energy prediction method comprises: obtaining the target structure and element characteristics of the material to be predicted;According to the target structure of the material to be predicted, target distance information and target angle information are obtained;The target structure characteristics of the material to be predicted are determined based on the target distance information and the target angle information;The target structure characteristics and element characteristics are processed based on the preset machine learning model, and a prediction label is obtained, which is used to indicate the adsorption energy of the adsorption molecule in the material to be predicted.

This invention relates to the field of environmental catalysis and water treatment materials, specifically to a nitrogen-vacant iron single-atom carbon nitride catalyst, its preparation method, and its application. The preparation method includes: uniformly mixing urea, iron salt, and oxaloyl dihydrazine to obtain a mixed precursor; thermally polymerizing and calcining the mixed precursor to obtain a calcined product; and cooling and grinding the calcined product to obtain the nitrogen-vacant iron single-atom carbon nitride catalyst. This catalyst can generate dynamic nonlocalized electron transfer with PMS molecules, promoting the generation of a highly selective dual nonradical system, thereby enabling efficient and highly selective oxidation and degradation of pollutants.

The application discloses an electro-catalysis-plasma coupling device for recovering elemental nickel from chemical nickel waste liquid and relates to the technical field of wastewater treatment. The device comprises a movable box body, an electrolysis unit and a plasma treatment unit arranged in the movable box body. The device integrates electrolysis, plasma, temperature control and circulation in the movable box body, has a compact structure, is convenient to transport and deploy on site, and is suitable for various scenes such as laboratories, electroplating workshops and wastewater treatment stations. A heating device is arranged in the electrolytic tank to heat and maintain the electrolyte in a target temperature range. A plasma generator is arranged to perform plasma quenching treatment on the electrolyte during electrolysis, significantly improve the concentration of free nickel ions in the electrolyte, improve the electrodeposition effect, and control the wastewater to quickly reach the electrolysis water level through the overflow port, the stainless steel rod, the magnetic pump, the check valve and the distribution box. The discharged electrolyte can be sent back to the electrolytic tank for re-electrodeposition by changing the placement of the water inlet pipe, thereby improving the recovery amount of nickel.

The application discloses a carbon-based resource hierarchical multi-element conversion system and method, a plasma hydrogen radical catalysis module is used for receiving hydrogen gas discharged by an electrolytic water module and is used for catalytically generating plasma hydrogen radicals from the hydrogen gas; a pyrolyzer is used for performing a hydrogenation pyrolysis reaction on solid carbon-based resources and the plasma hydrogen radicals to generate gaseous products and solid products; a plasma thermal cracking gasification module is used for converting the solid products discharged from a second outlet end into H2 / CO synthesis gas; a multi-phase product fine separation module is in communication with the first outlet end and is used for separating the gaseous products discharged from the first outlet end into gaseous phase products and liquid phase products; and a renewable energy power generation module is used for supplying power to the electrolytic water module, the plasma hydrogen radical catalysis module and the plasma thermal cracking gasification module. The application introduces hydrogen radicals into a pyrolysis reaction, significantly improves tar yield and quality, and simultaneously replaces a conventional gasification heat supply path with plasma to efficiently convert semicoke.

This invention discloses a method for mildly depolymerizing lignin β-O-4 bonds by adding a surfactant, belonging to the field of chemical catalysis technology. The invention involves mixing lignin, a photocatalyst, and a surfactant, then adding water to obtain a mixed solution. A photocatalytic reaction is then carried out under normal pressure and at 15-75°C to achieve mild depolymerization of lignin β-O-4 bonds. This invention utilizes the self-assembly of surfactants in the aqueous phase to form micelles, effectively solubilizing and dispersing hydrophobic lignin, improving its contact efficiency with the photocatalyst and active species. Furthermore, the unique hydrophobic microenvironment of the micelles creates an interfacial orientation effect on the β-O-4 bonds in the lignin molecules, promoting the selective breaking of these bonds. This solves the problems of low contact efficiency between the photocatalyst and active species leading to poor yields of aromatic monomers, poor solubility of lignin in the aqueous system, and the harsh and complex conditions required for traditional depolymerization reactions in existing lignin depolymerization methods.

The application discloses a treatment method of high-concentration printing and dyeing wastewater, which comprises the following steps: uniformly mixing a reaction catalyst with the high-concentration printing and dyeing wastewater, then transferring to a hydrothermal reaction kettle (PTFE lining) to react, and obtaining a transparent aqueous solution and black precipitate at the bottom after the reaction is completed. It is detected that the removal rate of the dye is greater than 99% and the removal rate of the colority is greater than 95% after the hydrothermal reaction. The obtained clear brine solution after the hydrothermal reaction can be returned to preparation of dye liquor or used as a washing solution in a washing process in a textile dyeing and finishing process, and the obtained black solid is a dye-derived carbon material, which can be used in multiple fields such as electrochemical energy storage, catalysis and adsorption. The application essentially provides a method for direct treatment and resource utilization of high-concentration and high-salinity printing and dyeing wastewater, which can realize reuse of brine in wastewater and utilize waste heat of the wastewater, and has important significance for resource utilization of textile printing and dyeing industrial wastewater.

The present application belongs to the field of time series analysis and dynamic early warning technology, and provides a method and system for early warning of excessive catalysis of trace elements in the preparation of biochar, specifically: first, preset a data acquisition unit in the fixation channel, and record the collection position corresponding to the data acquisition unit as the fixation monitoring site; monitor the surface conductance value and the medium-temperature thermal history value in real time from each fixation monitoring site; then, evaluate the crystallization residence matching according to the surface conductance value and the medium-temperature thermal history value, and obtain the residual risk degree of each fixation monitoring site; finally, perform early warning of excessive catalysis according to the residual risk degree. The evaluation of crystallization residence matching through time series analysis can effectively quantify the residual risk of high-energy state surface free metal centers caused by the mismatch between the crystallization enrichment degree in the fixation step of the biochar preparation process and the residence in the medium-temperature zone in the pyrolysis process, thereby improving the consistency of the carbon sequestration capacity of the biochar product and the product qualification rate of the production process.

The application discloses a kind of photocontrol chiral ligand based on diarylethene, structural general formula is as shown in following formula:After the photocontrol chiral ligand based on diarylethene synthesized in the application and rhodium catalyst coordination, when catalyzing asymmetric carbon hydrogen amidation at room temperature, higher reaction yield and higher ee value can be obtained by using ligand in open loop state to catalyze, and lower reaction yield and lower ee value can be obtained by using ligand in light stable state to catalyze.The application makes up the deficiency that there is currently lack of photo-thermal bistable photocontrol catalyst in the field of photocontrol asymmetric catalysis, and widens the application of diarylethene in photocontrol asymmetric catalysis.

The application specifically relates to a targeted cleaning agent composition and a process for cleaning regenerated PET bottle pieces. The targeted cleaning agent composition comprises the following components: a nano-sized molecularly imprinted polymer, which is prepared by taking an acrylate compound or a derivative thereof as a template molecule and has specific recognition and adsorption capacity for the adhesive on the surface of the PET bottle piece; at least one kind of engineered enzyme selected from lipase, esterase and protease; a non-ionic surfactant and deionized water. The application introduces the molecularly imprinted polymer into the field of plastic cleaning, initiates a three-module synergistic mechanism of "recognition-catalysis-stripping", recognizes and enriches the enzyme on the surface of the adhesive layer by the nano-sized MIP (molecularly imprinted polymer), realizes "anchored catalysis", upgrades the "free diffusion" mode of the enzyme into a "targeted enrichment" mode, and the adhesive can be efficiently removed under low-temperature and mild conditions by using the cleaning agent of the application, and the PET molecular chain is maximally protected.

The application discloses a preparation method of a modified vanadium-iron denitration catalyst and relates to the technical field of catalysis. The application does not need to introduce tungsten-containing and molybdenum-containing raw materials in the whole process. A vanadium source alkaline solution and a citric acid chelated iron-copper chelated solution are prepared, a double-stage mixing in-situ composite process is adopted, the iron-copper chelated solution is added into a premixed material of a carrier and a vanadium source in a buried material type dropping mode, a linkage control system pH is stabilized, a V-Fe-Cu-O ternary solid solution is formed, then phosphorus elements are embedded and a molding aid is added to mix and form a plastic mud material, after aging, extrusion molding and gradient drying, the material is calcined in an oxidative atmosphere in stages, and a stable V-Fe-Cu-P composite solid solution is formed. Through time sequence decoupling and precise process control, the application realizes uniform dispersion of active component molecules at a molecular level, improves the denitration activity, mechanical strength and sulfur deactivation resistance of the catalyst, and the process is simple and suitable for industrial scale production.

This invention belongs to the field of materials synthesis catalysis, and provides a method for preparing a porous organic polymer-supported catalyst and its application in photocatalytic CO2 reduction. The method involves designing an amide-type POP with redox properties using viologen organic ligands, further synthesizing a series of porous organic polymer-supported Ir and Ru-based catalysts, and applying them to photocatalytic CO2 reduction reactions. The novel pyridine amide catalyst provided by this invention has the advantage of simple synthesis, and the porous organic polymer-supported catalyst synthesized from it has the advantages of novel structure and excellent performance. By introducing Ir / Ru metal, the directional movement of electrons within the framework is promoted, serving as the catalytic center for CO2 reduction, thereby improving the utilization rate of visible light and the efficiency of photocatalytic CO2 reduction.

This invention discloses a method for preparing Mn-based low-temperature denitration catalysts via a sol-gel method and its application, belonging to the field of air pollution control and environmental catalysis. First, 10 mL of Ti(OC4H9)4 is taken and 10 mL of anhydrous ethanol is added to fully disperse it, preparing solution A. Then, appropriate amounts of Mn(NO3)2·4H2O and C are weighed out. 10 H5NbO 20 Solution B was prepared by dissolving (NH4)2S2O8 in a mixed solution of anhydrous ethanol, acetic acid, and deionized water. Solution B was slowly added dropwise to solution A under continuous stirring to form a uniform and transparent sol. The resulting sol was allowed to stand for a period of time to gel, and then aged for 3 hours. Finally, the resulting gel sample was dried in an oven at 110℃ for 12 hours. The dried sample was calcined in a muffle furnace at 500℃ for 3 hours, then pressed into tablets to obtain the catalyst. The sol-gel method coupled with a non-metallic S-doped Mn-based catalyst exhibits high and low temperature activity and a wide temperature window. 80 The temperature window is 180-415℃; it has the advantages of being easy to operate and controllable, making it suitable for industrial production.

The application discloses a kind of composite flame retardant, epoxy resin composite material and preparation method thereof, the amino functionalized MOF nanoparticles of the present application is synthesized by DMF aqueous solution system one-step solvothermal reaction, then it is prepared MOF@APP flame retardant by the way of in-situ composite mediated by silane coupling agent, ultrasonic auxiliary, overall process is simple, condition is mild, controllability is strong, can stably synthesize the MOF nanoparticles of amino functional group abundance, particle size is uniform, and realize the stable composite of MOF and ammonium polyphosphate, avoid the phase separation, uneven dispersion problem brought by simple physical mixing, finally the flame retardant obtained has the carbon catalysis of MOF, smoke adsorption function and APP's intumescent flame retardant function, and the two form significant flame-retardant synergistic effect, fundamentally solve the problem that traditional APP flame retardant adds large amount, and the compatibility of epoxy resin is poor, easily leading to the serious loss of matrix mechanical property.