216results about "Copper oxides/halides" patented technology

The invention belongs to the field of resource regeneration, and particularly relates to a method for separating and recycling copper, indium, gallium and selenium from a waste solar thin film battery. According to the method, the waste solar thin film cells are subjected to oxidizing roasting, deep eutectic leaching and extraction and reverse extraction, and high-quality conversion and purification of all valuable elements in the waste solar thin film cells to oxides of the valuable elements are achieved. According to the method, the process route is simple, high-selectivity extraction of indium is achieved through the synergistic effect of the deep eutectic solvent and P204, and meanwhile effective recovery of valuable elements such as copper and selenium is achieved. The recovered and prepared oxide can be widely applied to strategic emerging industries such as semiconductors, photovoltaics, aerospace, military and the like.

The invention discloses a surface oxidation monatomic nano-alloy catalyst as well as a preparation method and application thereof, and belongs to the technical field of advanced nano-energy materials and electro-catalysis. A surface-oxidized monatomic nano-alloy catalyst comprises a hydroxylated carbon nanotube carrier and bimetallic nano-alloy particles loaded on the hydroxylated carbon nanotube carrier, in the bimetallic nano-alloy particles, non-noble metal elements are dispersed in noble metal nano-particles in a monatomic form, the size of the bimetallic nano-alloy particles is 3-4 nm, and the surface-oxidized monatomic nano-alloy catalyst is prepared from a surface-oxidized monatomic nano-alloy catalyst. An oxide layer with the thickness of 0.3-0.6 nm is arranged on the surface of the bimetallic nano-alloy particle; the loading amount of the noble metal is 5-15wt%. Ruthenium and other non-noble metal elements are alloyed and anchored on the carbon material substrate, the conductivity of the catalyst can be greatly improved, the size of alloy particles is accurately controlled within the range of 3-4 nm, active sites can be exposed to the maximum extent, and structural stability is considered.

The invention belongs to the technical field of semiconductor oxide gas sensors, and particularly relates to an rGO / CuO / Li sensitive material, a preparation method thereof and application of the rGO / CuO / Li sensitive material in H2S sensors. The preparation method comprises the following steps: firstly, preparing a graphene oxide nanosheet by using an improved Hummers method, and then preparing the rGO / CuO / Li sensitive material by using copper nitrate, lithium chloride and the prepared graphene oxide nanosheet as raw materials, polyvinylpyrrolidone as a surfactant and N, N-dimethylformamide as a solvent by using a one-step solvothermal method. Under the condition of room temperature, the sensitive material shows a relatively high response value (220.1) and a relatively low detection lower limit (1ppb) on hydrogen sulfide, has good selectivity, repeatability and stability, and has a wide application prospect in trace-level hydrogen sulfide detection in the fields of industrial safety and atmosphere detection.

The application discloses a preparation method of mesoporous copper oxide and application thereof. The preparation method comprises the following steps: S1, preparing a hydroxyl copper nitrate microplate by taking calcium carbonate paper as a substrate and copper nitrate as a solvent; S2, synthesizing an ordered copper hydroxide nanowire assembly through an alkali solution reaction; and S3, performing annealing treatment in a muffle furnace to obtain the mesoporous copper oxide microplate. Under the conditions of no hard template, no soft template and no strong acid treatment, the application provides a method for synthesizing the mesoporous copper oxide microplate material with uniform pore structure on the carbonic paper by adopting copper nitrate hydrolysis, alkali etching and annealing, and the synthesis method of the mesoporous structure has the advantages of simple operation, good controllability and low cost. The application also relates to application of the mesoporous copper oxide as an electrocatalyst material in the field of glucose electrochemical sensing.

The invention provides a separation and extraction method for valuable metals in electroplating sludge, and belongs to the technical field of solid waste recycling. The electroplating sludge is copper-containing electroplating sludge, and the method comprises the following steps: mixing dehydrated and dried electroplating sludge with an organic acid solid auxiliary agent, carrying out gradient weak reduction pretreatment, cooling, and carrying out magnetic separation to remove iron; adding ammonia water to react, separating solid waste and collecting an ammonia-containing complex solution; adjusting the pH value to 9-10, carrying out distillation deamination at 60-70 DEG C, carrying out gas-solid waste separation, precipitating to obtain a copper hydroxide crude product, and dissolving the nickel element in the residual liquid; adjusting the pH value of the residual liquid to 10-11, carrying out two-stage distillation deamination, and precipitating to obtain a nickel hydroxide crude product; and purifying the copper hydroxide crude product and the nickel hydroxide crude product to obtain a copper hydroxide refined product and a nickel hydroxide refined product. According to the method, the dried electroplating sludge is mixed with the solid organic acid, reduction pretreatment is carried out under the conditions of different atmospheres and different temperatures, the ammonia complexing and graded deamination processes are combined, efficient recovery of copper and nickel is achieved, and the purity of the recovered metal is high.

The application discloses a kind of foam nickel supported copper-cobalt bimetallic composite catalyst and preparation method and application, belong to electrocatalytic material technical field.CuSO4·5H2O, CoSO4·7H2O and C6H5Na3O7 are mixed and using constant voltage deposition method is loaded on foam nickel substrate, and CuCo / NF precursor is obtained, and copper-cobalt bimetallic composite catalyst Cu x O-Co3O4 / NF with excellent catalytic activity and stability is successfully prepared by temperature programmed calcination.The application significantly enhances the adsorption capacity of nitrate molecules on the catalyst surface by utilizing the synergistic effect of Cu and Co, reducing the incidence of side reactions, thereby improving the catalytic efficiency of nitrate reduction reaction.Compared with traditional single catalyst, it shows higher ammonia yield, Faraday efficiency (FE) and better stability, and has broad application prospect.

The invention discloses a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process, and belongs to the technical field of purified copper slag. The invention relates to a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process. The method mainly comprises the following steps: acid leaching and impurity removal; the pre-leached filter residues are mixed with dilute sulphuric acid, air is introduced to serve as an oxidizing agent for oxidation leaching, after leaching, the pH is adjusted to 4.0-5.0 through CaCO3, and copper-containing leaching liquid is obtained through filtering; adding dextrose monohydrate into the copper-containing leachate, and adjusting the pH value by using NaOH; according to the method, through the closed-loop process of acid presoaking impurity removal, air oxidation leaching, glucose reduction and cuprous oxide Cl <-> removal, conversion from harmless treatment to resource high-value utilization of the low-grade copper slag is achieved, air is used for replacing KMnO4, MnO2 and other chemical oxidants, the cost is reduced, no harmful by-product exists, the green metallurgy requirement is met, and the method is suitable for industrial production. The prepared cuprous oxide is directly used for removing Cl <-> from a supernatant in electrolytic zinc, and the double contradiction of copper slag dilution and high cost of a Cl <-> removing agent in the industry is solved.

The invention discloses a method for preparing vinyl chloride by electrocatalytic dechlorination of 1, 2-dichloroethane, a working electrode of the method takes a metal oxide as a catalyst, and the metal oxide is selected from at least one of the following metal oxides: Pd, Mn, Fe, Co, Ni, Cu, Ru and Mo. According to the invention, the metal oxide powder is used as the electrocatalyst, the catalyst is coated on the electrode material to prepare the working electrode, the working electrode is applied to electrocatalytic dechlorination reaction of 1, 2-dichloroethane, vinyl chloride can be generated at high selectivity at room temperature, a new way is opened up for production of vinyl chloride by electrocatalytic dechlorination, and the method has wide application prospect. And a green and low-cost solution is provided for efficient synthesis of vinyl chloride.

The invention discloses a copper cyanoaurate hexagonal sheet loaded cuprous oxide material as well as a preparation method and application thereof. The copper cyanoaurate hexagonal sheet loaded cuprous oxide material comprises a copper cyanoaurate hexagonal sheet and cuprous oxide loaded on the copper cyanoaurate hexagonal sheet. According to the preparation method, copper ammonium chloride and potassium cyanoaurate are taken as raw materials, a copper cyanoaurate hexagonal sheet is prepared by a hydrothermal method, and then cuprous oxide is loaded on the copper cyanoaurate hexagonal sheet, so that the copper cyanoaurate hexagonal sheet loaded cuprous oxide material is obtained. The invention provides application of the copper cyanoaurate hexagonal sheet loaded cuprous oxide material as a catalyst for electrocatalytic reduction of carbon dioxide, and provides a gas diffusion electrode, and the catalyst in the gas diffusion electrode is the copper cyanoaurate hexagonal sheet loaded cuprous oxide material. The preparation process is simple and environment-friendly; the prepared material has higher ethylene selectivity and stability in the reaction of electrocatalytic reduction of carbon dioxide.

A method and system for converting copper cyanide to copper oxide is provided. The method includes contacting a copper cyanide solution with an acidic solution in a precipitation tank under reaction conditions sufficient to produce a copper cyanide slurry, removing the copper cyanide slurry from the precipitation tank, separating solid copper cyanide from the copper cyanide slurry in a first separation device, removing the solid copper cyanide from the first separation device, contacting the solid copper cyanide with a sodium hydroxide solution in a production tank under reaction conditions sufficient to produce a copper oxide slurry, removing the copper oxide slurry from the production tank, separating solid copper oxide from the copper oxide slurry in a second separation device, and removing from the second separation device any residual sodium hydroxide not reacted during the process of contacting the solid copper cyanide with the sodium hydroxide solution in the production tank.

To obtain cuprous oxide with appropriate performance. [Solution] The method for producing cuprous oxide includes the steps of: obtaining copper ink, which is a liquid composition containing copper particles (S10); forming a film on a substrate by coating or printing the copper ink (S12); producing cuprous oxide on a substrate by drying the film formed on the substrate with copper ink, and then heating it by irradiating it with light in the visible to infrared wavelength range in an atmosphere with an oxygen concentration of 10% to 21% (S16); and heating the cuprous oxide in an atmosphere with an oxygen concentration lower than the oxygen concentration at which the copper particles were oxidized and sintered (S18).

The invention belongs to the technical field of environmental functional material preparation, and discloses a method for preparing a Cu-coated Cu2O-coated C net by an ethanol-assisted combustion method and molecular oxygen activation application of the Cu-coated Cu2O-coated C net. The cleaned copper net is soaked in ethyl alcohol and then calcined, and the Cu-coated Cu2O-coated C net is obtained after repeated soaking and calcination. According to the optimized net, the local O2 enrichment concentration of the net in an aqueous solution is 2.3 times of the oxygen content in a normal aqueous solution, and the degradation rate constant of ofloxacin reaches 0.178 min <-1 >, which exceeds that of traditional photocatalysis and Fenton-like systems. In addition, the net exhibits gt; gt; gt; gt; gt; the degradation efficiency is 95%, and the method has the feasibility of pilot scale (the cost is 0.001 dollar per liter when 144 L of wastewater is treated), and provides a sustainable example for on-site water remediation. The preparation method disclosed by the invention is simple and easy to implement, relatively short in process and suitable for industrial production and use.

The application provides a preparation method of a biomimetic flagelliform nanowire and relates to the technical field of nanowire material preparation. The method comprises the following steps: mixing and immersing a trithiocyanic acid solution and copper hydroxide nanowires, and obtaining immersed nanowires after drying; the immersion conditions comprise the following steps: the temperature is 20-45 DEG C, and the time is 0.01-50 min; and the obtained immersed nanowires are calcined at 250-500 DEG C for 2-6 h. The method provided by the application uses a trithiocyanic acid solution to immerse Cu(OH)2 nanowires, and then calcines in a muffle furnace. The method provided by the application is simple in operation, the prepared nanowires are uniform and controllable in morphology, and can be applied to the fields of oil-water separation, battery negative electrode current collectors, adsorption and the like.

The invention discloses a method for realizing degradation of polyalkylene oxide compounds and controllable molecular weight through a promoter, which comprises the following steps: adding a photodegradation promoter into a high-molecular-weight polyalkylene oxide product, adjusting the proportion of the promoter and the proportion of effective components, and accurately controlling the shear molecular weight under the irradiation of an ozone emitter, so that the molecular weight of the polyalkylene oxide compounds is controllable. According to the invention, polyalkylene oxide with different molecular weights of 30,000-3,000,000 is prepared by using the photodegradation cocatalyst, so that the photodegradation cocatalyst can meet the requirements of customers in different fields, and meanwhile, the photodegradation cocatalyst prepared by the invention can be recycled to achieve the benefits of reducing cost and improving efficiency.

The invention discloses a method for resource utilization of copper-containing waste etching liquid and production of high-purity copper hydroxide, and belongs to the field of green cyclic recycling of copper-containing waste liquid. The method for preparing the high-purity copper hydroxide by using the copper-containing etching waste liquid comprises the following steps: mixing the copper-containing etching waste liquid with a crystal form inducer solution, adjusting the pH value to 3.0-8.0, then reacting, carrying out solid-liquid separation to obtain a solid-phase separated substance and filtrate, and carrying out aging treatment on the solid-phase separated substance to obtain a basic copper chloride precipitate; and adding ammonia water and a crystal form transforming agent into the basic copper chloride precipitate, then carrying out aging treatment, and carrying out solid-liquid separation to obtain the high-purity copper hydroxide powder. The prepared copper chloride hydroxide and copper hydroxide powder are large in particle size, the average particle size of the copper chloride hydroxide collection substance is 20-200 microns, and the average particle size of the copper hydroxide powder is 10-100 microns.

This invention provides a PVP-doped Cu-Mg binary metal electrocatalyst material, its preparation method, and its application. The method includes the following steps: dissolving copper chloride, polyvinylpyrrolidone, and magnesium chloride in N,N-dimethylformamide to obtain a mixed solution; the molar ratio of copper chloride to magnesium chloride is 1:0.98–1.02; stirring the mixed solution under ice-water bath conditions while introducing a protective gas, adding sodium borohydride solution dropwise to generate a precipitate, separating, washing, and drying the precipitate to obtain the PVP-doped Cu-Mg binary metal electrocatalyst material. This invention effectively regulates the formation of Cu by incorporating magnesium and controlling its doping amount, combined with PVP. + The valence state of Cu improves the selectivity of C2 products, while the outer PVP coating protects Cu. + Not oxidized to Cu 2+ This effectively improves the stability of the material.

This invention provides a PVP-coated Cu-based electrocatalytic material, its preparation method, an electrode for electrocatalytic carbon dioxide reduction, and its application. Copper chloride dihydrate, polyvinylpyrrolidone (PVP), and dimethylformamide are mixed to obtain a mixture. Under a protective atmosphere and with stirring, potassium borohydride solution is added dropwise to the mixture, generating a precipitate. The precipitate is then centrifuged and dried to obtain the PVP-coated Cu-based electrocatalytic material. This invention introduces PVP, which has the advantages of low cost and wide availability. Cross-linked nanosheet-like copper-based catalytic materials are successfully prepared by reducing divalent copper ions with potassium borohydride solution. During the reduction process, 0.18–0.22 g of PVP (based on 2 mmol of copper) is introduced to coat the copper nanosheet structure, effectively regulating the valence state change of divalent copper ions during the reduction process, controlling it between monovalent and divalent copper, thus making it more favorable for the formation of C2 products.

To provide a layered double hydroxide with a novel function in addition to an adsorption function of a volatile sulfur compound.SOLUTION: A copper-containing layered double hydroxide represented by a formula (1) below is provided. The copper-containing layered double hydroxide is obtained by reacting an aqueous solution containing copper with an aqueous solution containing aluminum under conditions where the pH is 8 or higher. Cu1-xAlx(OH)2An-x / n mH2O (1) (in the formula (1), An- is an n-valent anion, x is a number satisfying 0<x<1, n is a number satisfying 1≤n, and m is a number satisfying 0<m).SELECTED DRAWING: None

Provided is a copper oxide, for which the specific surface area measured by a nitrogen adsorption method is 2.9 m2 / g or more, and the tap density measured in accordance with JIS Z 2512: 2012 is less than 1.1 g / cm3.

The application relates to the technical field of waste copper recovery, and discloses a process for producing special copper oxide by recycling waste copper materials, which comprises the following steps: obtaining copper powder by pretreating waste copper materials, preparing a copper dissolving reagent, introducing Cu 2+ catalyst precursor into the copper dissolving reagent, carrying out a copper dissolving reaction to obtain a copper ammonia solution, continuously introducing air after ammonia is dispersed, carrying out an ammonia evaporation reaction and ammonia absorption by heating, stopping when the solution is green and muddy, carrying out solid-liquid separation to obtain basic copper carbonate solid and a low-concentration copper ammonia solution, washing the basic copper carbonate solid with pure water, calcining again, and grinding to obtain special copper oxide. The Cu element plays a catalytic role in different forms at different stages, and the two problems of slow copper dissolving and poor crystallization are solved systematically without introducing external impurities. Through the synergistic effect of the catalytic mechanism and the accurate process parameters, the high purity, particle size control and special performance of the final copper oxide product are improved, and the special application requirements are met.

The invention provides a microwave-induced CuO / SnO2 nano composite material as well as a preparation method and application thereof, belongs to the technical field of material synthesis, and is used for solving the technical problem of poor gas sensitivity of a CuO / SnO2 composite material. The preparation method of the CuO / SnO2 nano composite material comprises the following steps: dissolving and mixing a tin source in a solvent I, and carrying out chemical reaction to prepare a flat rod-shaped Sn-MOF matrix; dispersing and dissolving the Sn-MOF matrix and a copper source in a solvent II, reacting under a microwave-assisted condition, and washing and drying a product generated by induction; and calcining the dried product in the air to prepare the CuO / SnO2 nano composite material. The acetone steam sensor prepared from the CuO / SnO2 nano composite material has good gas sensing performance. The optimal detection working temperature of the sensor to acetone steam is 200 DEG C, and meanwhile, the sensor also has the advantages of high reaction and response speed, large response value, good long-term stability and the like.

The utility model relates to a production device of stable-state copper hydroxide, and belongs to the technical field of production of copper hydroxide. Comprising a reaction tank, a connecting pipe and a drying box, the drying box is fixedly connected with the reaction tank through a plurality of supporting columns, the connecting pipe is communicated between the drying box and the reaction tank, and a switch valve is arranged in the connecting pipe; warm air blowers are arranged on the two sides of the upper end in the drying box, a supporting frame is arranged at the lower end of the drying box, a bearing piece is slidably connected to the upper end of the supporting frame, and a vibration mechanism is arranged in the supporting frame. According to the copper hydroxide drying device, the drying box communicated with the reaction tank is arranged, stable-state copper hydroxide on the bearing piece is vibrated through the vibration mechanism in the drying process, the drying effect is optimized, the copper hydroxide is dried more evenly and fully, and the situation that the copper hydroxide below is difficult to dry is avoided.

The invention discloses a composite porous electrode material as well as a preparation method and application thereof. The composite porous electrode material takes a cellulose nanofiber porous composite material as a carrier and is loaded with a metal oxide active component; the metal oxide is one or more modified structures constructed by heteroatom doping and oxygen vacancy defects. The efficient photoelectric cathode integrating CO2 adsorption and catalytic conversion is constructed, and the effect of remarkably improving CO2 reduction activity and product selectivity is achieved.

The invention provides spherical copper oxide water atomization production equipment and a preparation process thereof, and relates to the technical field of copper oxide preparation, firstly, a medium-frequency induction smelting furnace is used for smelting and pre-oxidizing a copper material, and then an atomization tower and a porous rotary damping spray head in the atomization tower are used for carrying out water atomization crushing and oxidation on molten copper; and then a rotational flow dehydrator and an airflow drying tower are used for dehydration and deep oxidation. Copper liquid pollution is prevented through nitrogen whole-process protection and smelting segmented oxidation, the rotating speed of the porous rotary damping spray head is stabilized through wavy concave-convex structure embedment and constant damping design of ball groove bearing balls, and particle aggregation and nozzle deposition are avoided in combination with pulse type intermittent jet flow. The copper oxide powder with high sphericity, uniform granularity and pure surface is obtained, the production efficiency of spherical copper oxide is improved, the service life of a nozzle is prolonged, and energy consumption is reduced.

The application provides a copper electrode based on a UiO-66-NH2 metal organic framework film, and a preparation method and application thereof, and relates to the fields of electrocatalysis and new energy materials. The electrode is composed of a rough metal copper substrate (rCu) and a continuous and uniform dense film of UiO-66-NH2 on the surface, the rCu is prepared by chemical oxidation of a commercial copper foil to generate CuO nanosheets and then electrochemical reduction, and the film is grown by cathodic electrodeposition for 20 minutes. The electrode is applied to the electrocatalytic reduction of nitrate to synthesize ammonia in a neutral medium, the enrichment of hydrated potassium ions in the film, the reconstruction of the interface water to build a rich-proton limited microenvironment, and the reduction of the activation energy of the rate-determining step. In a continuous flow system, the electrode can be stably operated at a current density of 800 mA cm ‑2 for more than 40 hours, and high-purity ammonium chloride can be recovered, so that the problems of insufficient proton supply, low selectivity and low activity in the prior art are solved.

To provide: a manufacturing method of inorganic powder using a chemical vapor phase synthetic method, which is capable of increasing a manufacturing yield by suppressing a side reaction, and of increasing stability of continuous steps by preventing a reaction vessel from being closed; and a manufacturing device thereof.SOLUTION: A manufacturing method of inorganic powder using a chemical vapor phase synthetic method according to one embodiment of the present invention comprises the steps of: feeding a precursor; feeding a side reaction prevention gas for preventing a side reaction of the precursor to the precursor; feeding a reaction gas to the precursor; and forming inorganic powder by chemically reacting the precursor with the reaction gas.SELECTED DRAWING: Figure 3

The invention discloses a heavy metal emission reduction and sludge reduction treatment process method for circuit board wastewater. The invention provides a layered precipitation strategy of'first acid, second alkali and second sulfur '. The method comprises the following steps: performing acid precipitation on alkaline organic wastewater by using acidic wastewater, and recovering printing ink residues; carrying out air stripping treatment on the copper ammonia wastewater by utilizing an alkaline condition, and precipitating high-purity copper hydroxide; and finally, carrying out deep precipitation on residual complexing heavy metals by utilizing excessive sulfides in the pretreatment stage, and further recovering copper resources in the comprehensive water tank through coprecipitation of copper hydroxide and copper sulfide. Sludge generated in each process is classified and treated; printing ink slag, biochemical residual sludge and copper / nickel sulfide sludge are subjected to synergistic pyrogenic process treatment; copper hydroxide sludge is selectively subjected to acid dissolution to prepare copper sulfate. Lime, ferrous sulfate and polyaluminum are not used in the whole process. According to the method, the medicament is utilized to the maximum extent, the sludge is reduced by 50% or above, and the resource value of valuable metal is increased by 3-5 times.

The present application relates to the technical field of nano new material preparation, in particular to a kind of antibacterial flame-retardant multifunctional cuprous oxide / sb2o3 nano material and its preparation method.The method of the present application is characterized by using electrostatic adsorption principle, copper oxide is loaded to the surface of sb2o3, and copper atom will partially replace antimony atom, and Cu-O-Sb binding bond is formed by electron transfer, to prepare cuprous oxide / sb2o3 nano material.The cuprous oxide / sb2o3 nano material prepared by the method of the present application has high purity, good dispersibility, stable structure and excellent antibacterial performance, and the detection of escherichia coli and staphylococcus aureus antibacterial rate is all >99%, the flame-retardant effect is remarkable, and the combustion limited oxygen index is increased by about 25%, which can be applied to the fields of textiles, plastic products and coatings, and is suitable for large-scale industrial production and popularization.

A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

The invention discloses a wastewater treatment system and method for catalytic wet oxidation, and the treatment system comprises a vortex bubble generator; the oxidation reactor is positioned at the downstream of the vortex bubble generator; the heater is positioned at the upstream of the vortex bubble generator; and a preheater located upstream of the heater. According to the treatment system disclosed by the invention, the vortex effect of the wastewater is enhanced under the dual effects of the flow guide slit and the flow guide spiral of the vortex bubble generator, and the micro-nano bubble generation efficiency is improved. In the catalytic wet oxidation reaction process, oxygen enters the oxidation reactor in the form of micro-nano bubbles, and compared with millimeter-scale bubbles in a traditional gas distribution mode, the retention time of the oxygen is prolonged, the specific surface area of the bubbles is large, the gas-liquid mass transfer rate is increased, the generation rate of free radicals is increased, and the catalytic wet oxidation reaction efficiency is improved. Meanwhile, oxygen enters the oxidation reactor in the form of micro-nano bubbles, so that the consumption of the oxygen is reduced while the reaction efficiency is improved.