349 results about "Chemical separation" patented technology

The invention discloses a rectification mechanism and a carbon disulfide production system containing the same. The rectification mechanism comprises an integrated rectification tower, and an inner cavity of a shell of the integrated rectification tower is sequentially divided into a function-integrated pre-separation and sulfur removal area, a main rectification and hydrogen sulfide removal area and a condensation reflux area from bottom to top in the vertical direction; the pre-separation and sulfur removal area comprises a settling tank arranged at the lower part of the shell, a gathering cover arranged above the inner wall of the settling tank, and a gas rising pipe I arranged above the gathering cover; the invention belongs to the technical field of chemical separation, and achieves the technical effects that multi-stage functions of pre-separation, main rectification, precise purification, final condensation and the like are innovatively integrated in a single tower, so that the fundamental simplification and compactness of the equipment structure are realized; in the traditional process, separate coarse removal, fine removal and finished product towers are replaced by unique expanded settling tanks in the towers, filler layers of integrated plate heat exchangers, tower tops with spiral condensation channels and side-draw systems.

The utility model relates to the technical field of chemical separation, and provides a dividing wall column and a rectification device.The dividing wall column comprises a column body, a partition plate, a first distributor and a first liquid collection tray, the partition plate is arranged in the column body and extends in the height direction of the column body, and the top face of the partition plate and the inner top wall of the column body are arranged at intervals in the height direction of the column body; the bottom surface of the partition plate and the inner bottom wall of the tower body are arranged at intervals; in the height direction intersecting with the tower body, one side wall face of the partition plate and a part of the inner wall of the tower body define a feeding section, the other side wall face of the partition plate and the other part of the tower body define a discharging section, the first distributor is arranged in the feeding section and connected with the tower body and the partition plate, and the first liquid collecting disc is arranged in the discharging section and connected with the tower body and the partition plate. According to the invention, the problems of high energy consumption and large occupied area when silicate ester is separated in a double-tower rectification mode can be solved.

The invention discloses a method for efficiently extracting phenol from coal tar and primarily separating crude phenol oil, and relates to the technical field of chemical separation. Carrying out multi-stage cross-flow or counter-flow extraction on the extracting agent and the coal tar to obtain a raffinate phase and a high-concentration extraction phase; and mixing the raffinate with condensate at the top of the regeneration device and supplemented fresh water, and recovering residual organic amine through a reverse extraction device to obtain a dephenolized oil product and backwashing water. Mixing and diluting the extract phase with backwashing water, and standing for phase splitting to obtain a high-grade crude phenol oil phase and a low-concentration extract phase; the low-concentration extraction phase absorbs CO2 in the industrial tail gas for acidification to obtain a low-grade crude phenol oil phase and an amine salt aqueous solution; and desorbing the amine salt aqueous solution to obtain a regenerated extraction agent (circularly used for extraction), tower top condensate (circularly used for reverse extraction) and water-containing industrial-grade CO2 gas (recycled or sealed after drying). According to the method, high-efficiency extraction of the phenolic compounds in the coal tar and primary separation of crude carbolic oil are realized by utilizing the extraction performance differences of extraction capacities, selectivity and the like of the extraction agents with different concentrations on the phenolic compounds, and the production economy is improved.

The invention relates to the technical field of chemical separation and purification, and discloses a method for separation and purification of taxadiene from tobacco and GC-MSMS quantitative detection.The method for separation and purification of taxadiene from tobacco comprises the following steps that S1, tobacco leaves are made into powder, an extracting agent is added, ultrasonic extraction is conducted for multiple times, and extract liquor is obtained; s2, evaporating the extract to dryness, adding an organic solvent, and dissolving to form a concentrated solution; s3, the concentrated solution is added into a silica gel column for gradient elution, and an extraction sample is obtained; and S4, evaporating the extracted sample to dryness, adding acetonitrile for dissolving, and carrying out secondary recrystallization to obtain purified taxadiene. According to the method, the efficiency and purity of separating the taxadiene from the tobacco are improved, and the taxadiene is accurately quantified.

A waste extraction system that includes a column set positioned between and fluidly coupled to an upstream segment of a main waste pathway and a column effluent tank, the column set having a uranium adsorption column fluidly coupled to a supporting adsorption column along the main waste pathway. The uranium adsorption column is upstream the supporting adsorption column. The waste extraction system also includes a strip waste pathway extending from the uranium adsorption column to the column effluent tank bypassing the supporting adsorption column, an anion exchange resin housed in the uranium adsorption column, and a cation exchange resin housed in the supporting adsorption column.

The application discloses a kind of metal organic framework materials and preparation method and application thereof, belong to chemical separation technical field.The preparation method of metal organic framework material provided in the application includes the following steps: with water and methanol as solvent, with 4,4 '-dipyridyl and malic acid as organic ligand, zinc source is added, and reaction is carried out, in the reaction process, oxygen atom on malic acid is connected with zinc ion on zinc source to form 2D layered network structure, 2D layered network structure is bridged by 4,4 '-dipyridyl to form 3D rigid network framework, after reaction, metal organic framework material is prepared.The metal organic framework prepared by the application has super strong capture effect and large storage space for acetylene molecules, and also has excellent separation effect on acetylene carbon dioxide mixed system, to achieve the purpose of high-purity, high-yield acetylene purification in acetylene carbon dioxide mixture.

The application discloses a kind of equipment for detecting tritium in groundwater of monitoring well of nuclear power plant, including electric deionization device, collection water tank, switching valve, measuring chamber, dosing mechanism and first waste liquid tank, the electric deionization device is communicated between the monitoring well and collection water tank, the switching valve is arranged between the collection water tank and measuring chamber, the dosing mechanism is communicated with the switching valve, for dosing in the measuring chamber, the electric deionization device and switching valve are all communicated with the first waste liquid tank, direct connecting pipeline is also provided between the electric deionization device and switching valve directly connected.The equipment for detecting tritium in groundwater of the present application can quickly purify water body by setting electric deionization device, and the collected purified water can be directly sent into measuring chamber for detection;Chemical separation and sample measurement are integrated in one device, which can process and detect more samples in a shorter time, greatly shortening the processing time and process.

The invention relates to the technical field of chemical separation equipment, in particular to a graded pore foamed ceramic filler, a separation tower and a preparation method. The invention provides a separation tower, grade hole foam filler is used, the filler is prepared through a 3D printing process, the separation tower comprises a filler body, and the filler body is provided with fine holes and coarse holes; the aperture ratio of the thick holes to the thin holes is 2-5, and the volume ratio of the thin holes to the thick holes is 0.3-0.6. The invention aims to solve the technical problem that the flux and the mass transfer area cannot be balanced by a single aperture in the prior art.

The invention discloses an MDEA solution thermal regeneration and hydrogen sulfide analysis system and process method, and belongs to the technical field of gas purification and chemical separation. The system comprises a regeneration tower, a kettle type reboiler, a condensate tank and a gas phase balance pipeline, an oil collector is arranged at the bottom of the regeneration tower, and the shell pass liquid level of a kettle type reboiler is controlled by LT2 to be always higher than the top of a heat exchange tube bundle, so that full-immersion corrosion prevention is realized; steam condensate enters the condensate tank through the first condensate outlet pipeline, and the pressure in the condensate tank is synchronous with that of the steam inlet pipeline through the gas phase balance pipeline, so that the condensate is automatically discharged without a pump; and when the gas phase outlet temperature TE2 is smaller than or equal to 125 DEG C and the steam pressure PT1 after pressure reduction is larger than 0.4 MPa, steam is cut off in an interlocking mode, and MDEA thermal decomposition is prevented. The service life, the operation safety and the operation reliability of equipment are remarkably improved.

The present application belongs to the technical field of water treatment, and relates to a heat-sensitive color developing agent F-103 production wastewater treatment method. The present application performs multistage treatment on the wastewater. First, an alkaline chemical separation reaction is performed on the wastewater to remove part of the acidic polar organic matter 3-p-tolylsulfonylureido phenol, p-toluenesulfonic acid and the like in the water. Then, an acid chemical separation reaction is performed to further remove the alkaline polar organic matter intermediate MAPOTs and the like in the water. Subsequently, an adsorption reaction is performed using activated carbon to further remove the organic matter and inorganic impurities in the water. Finally, evaporation and concentration are performed to recover the salt sodium chloride. The wastewater treatment of the present application recovers the salt sodium chloride in the wastewater as a resource under the premise of solving the toxicity problem of the organic matter in the wastewater, and realizes the harmless treatment and the reduction of hazardous waste of the wastewater.

The application discloses a kind of high olefin dry dehydration bed regeneration and cryogenic recovery process, belong to chemical separation and purification technical field, the process includes six steps of bed emptying, cold inert medium purging, heating desorption, staged cryogenic condensation recovery, bed cooling, pressure charging standby in sequence, maximum recovery free olefin by pre-emptying and purging step, inhibit high temperature polymerization, core uses staged cryogenic condensation recovery process to olefin component in desorption gas is condensed and recovered gradually, the loss problem of olefin material direct discharge flare in traditional process is solved, effectively inhibit olefin polymerization, by pre-cold inert medium purging step, remove the free olefin remaining in bed, cooperate with desorption temperature control and oxygen-free inert atmosphere throughout, avoid the occurrence of olefin polymerization reaction under high temperature condition, prevent the damage of green oil generation to adsorbent and equipment.

The application discloses an adsorbent for removing trace metal ions in alcohol ether solvents and a preparation method and application thereof, and belongs to the field of chemical separation technology. The adsorbent is a zirconium-based metal organic cage material with discrete structure formed by coordination self-assembly of a zirconium metal salt and a nitrogen-containing polycarboxylic acid organic ligand. The adsorbent has specific ion nanowells, and can form a strong limited synergistic effect with metal ions. The adsorbent is suitable for adsorption and separation of trace metal ions in various alcohol ether solvents, and has high metal ion adsorption and removal efficiency.

The application belongs to the technical field of chemical separation materials, and relates to a preparation method of a sulfonated polythiophene modified nitrogen-doped honeycomb carbon and Co9S8 composite microsphere integrated flow electrode, which comprises the following steps: taking chitosan as a carbon source and a nitrogen source, adding a cobalt source and a sulfur source, performing cross-linking aging, forming and curing, performing freeze drying and high-temperature carbonization, and obtaining chitosan derived nitrogen-doped honeycomb carbon and Co9S8 composite microspheres; taking thiophene and 3-sulfonic acid thiophene as monomers, coating a sulfonated polythiophene film on the surface of the composite microspheres through chemical polymerization, and obtaining the integrated flow electrode. The high specific capacitance electrode material and the conductive ion exchange membrane function are combined into one, the specific capacitance, the hydrophilicity and the ion selective permeability are significantly improved, the integrated flow electrode is used for deionization technology treatment of uranium-containing wastewater, the uranium removal rate is high, the electric adsorption capacity is large, the balance time is short, the device is simplified, and the application prospect is wide.

The invention relates to the technical field of chemical separation, in particular to a three-dimensional flexible metal organic framework material and a preparation method and application thereof. The structural general formula of the metal organic framework material is A (TIB) 2, A is a transition metal cation, and TIB is 1, 3, 5-tri (1H-imidazole-1-yl) benzene. Transition metal cations and TIB are self-assembled in an octahedral hexa-coordination mode to form a two-dimensional layered frame, and the two-dimensional layered frame is further stacked to form a three-dimensional flexible structure. The material has a two-dimensional layered skeleton with high stability and a pore surface with a partial electrostatic potential, not only shows a strong capture capability on carbon dioxide, but also provides a suitable storage space for acetylene, can selectively adsorb and separate an acetylene / carbon dioxide / ethylene mixed system, and realizes one-step purification of ethylene from a ternary mixture. In addition, due to excellent cyclic regeneration performance, solvent stability and thermal stability, the adsorbent is expected to be an efficient adsorbent applied to industrial adsorption separation.

The invention discloses a hydrosolvent distillation, compression and separation device, which belongs to the technical field of chemical separation and comprises a reaction kettle, a gas-liquid separator, a low-pressure balance tank, a high-pressure balance tank, a low-pressure steam purification filter, a steam compressor, a steam boiler, an electric cabinet and a condensed water heat recoverer. The steam compressor sucks steam of a water solvent, reduces pressure in the reaction kettle and promotes evaporation of the water solvent in the reaction kettle, the steam compressor compresses the steam of the water solvent into high-temperature and high-pressure steam to enter a heating layer of the reaction kettle, and extract and a solvent in the reaction kettle are condensed into liquid to flow out while being heated; the energy consumption of the device is 20% of the energy consumption of a distillation cooling device, and compared with the distillation cooling device, the energy consumption can be reduced by 80%.

The invention discloses a vertical gas-liquid two-phase fluid uniform distribution device and a uniform distribution method thereof, and relates to the technical field of chemical separation equipment. The device comprises a device shell, a cyclone flow guide mechanism, a multi-stage reducing flow guide mechanism and an umbrella-shaped reflecting and converging mechanism, the cyclone flow guide mechanism, the multi-stage reducing flow guide mechanism and the umbrella-shaped reflecting and converging mechanism are sequentially fixed in the device shell from top to bottom, and the multi-stage reducing flow guide mechanism comprises a first-stage distribution plate, a second-stage distribution plate and a third-stage distribution plate; first-stage distribution holes are uniformly distributed in the first-stage distribution plate, second-stage distribution holes are uniformly distributed in the second-stage distribution plate, third-stage distribution holes are uniformly distributed in the third-stage distribution plate, a mounting groove is formed in the bottom of each third-stage distribution hole, and a valve element assembly is fixed in each mounting groove. Through the multi-stage synergistic effect, the technical problems that an existing distributor is insufficient in radial mixing, poor in operation elasticity, prone to blockage, serious in wall flow phenomenon and the like are effectively solved, and efficient, stable and uniform distribution under all working conditions is achieved.

A method of forming a high internal phase emulsion (HIPE) foam is provided. A nitroxide-containing monomer can be used in combination with other monomers that can then be used to make a high internal phase emulsion foam upon curing. The nitroxide group can subsequently be used to control the radical polymerization of many monomers, which can be grafted from the surface of the high internal phase emulsion foam. The resulting foam can be useful in performing separations of radioactive species, metals, metal ions, multi-element ions, metal complexes, halides, and organic chemical species in chemical process streams, clean-up operations, etc.

A system and method for chemical process simulation integrates thermodynamic models into machine learning frameworks to enhance predictive accuracy and optimize chemical separation processes. The system employs a variety of methods, such as using a physics- informed neural network (PINN)-like approach and methods that embed thermodynamic equations directly into the architecture, ensuring adherence to physical laws such as conservation of energy and mass. Additionally, experimental data, virtual sampling points derived from thermodynamic models, and auxiliary predictions capturing interdependencies between physical and chemical variables are combined into an augmented dataset for training. A hybrid loss function balances contributions from experimental data and thermodynamic insights, dynamically adjusted via a scaling hyperparameter. The system predicts target properties, such as adsorption efficiency, under diverse operating conditions while maintaining compliance with thermodynamic constraints.

The utility model relates to chemical separation technical field, concretely is a kind of kettle type distillation device, it includes kettle body, T groove and bolt, the top of kettle body is detachably connected with kettle cover, the inner chamber of kettle body is provided with heating cavity, the top of kettle cover is fixedly installed with motor, the output of motor is fixedly connected with stirring rod, the outside of stirring vane is provided with dismounting mechanism, and the inner chamber of dismounting mechanism is provided with heating mechanism, T groove, sliding slot, sliding base, spring, screw hole, jack, connecting piece, insert block, T piece and collar, the kettle type distillation device, by setting dismounting mechanism, it is detachable connection structure between stirring vane and stirring rod, to facilitate the separate dismounting and cleaning of stirring vane, by setting heating mechanism, electric heating tube and heat conduction plate cooperate to heat stirring vane, then the stirring vane of rotation and heated state effectively improves the heating uniformity when material to be distilled is stirred.

The utility model relates to the technical field of chemical separation, in particular to a dual-purpose extractive distillation tower for separating acetic acid from water, which comprises an extraction tower, a condenser I, a condenser II and a reboiler, an extraction chamber, a distillation chamber and a circulation chamber are arranged in the extraction tower, the distillation chamber and the extraction chamber are symmetrically arranged, and the circulation chamber is positioned below the distillation chamber and the extraction chamber. The first condenser and the second condenser are located above the extraction tower, the first condenser is communicated with the extraction chamber, the second condenser is communicated with the rectification chamber, and by integrating the two functions of extraction and rectification, the tower achieves effective separation of acetic acid and water. The layered contact design ensures that the acetic acid raw material and the composite extraction agent are in full contact but not directly mixed between filler layers, the mass and heat transfer process is optimized, the extraction agent can be recycled after being treated by the rectification chamber, and the resource waste is remarkably reduced. And due to the recycling design, the operation cost is reduced, and the consumption of the extracting agent is reduced.

The invention belongs to the technical field of chemical separation, and discloses a two-stage low-temperature condensation coupling compression separation high-purity hydrogen sulfide purification process and system. The system consists of a two-stage low-temperature condensation unit, a hydrogen sulfide compression unit and a hydrogen sulfide collection unit, the two-stage low-temperature condensation unit comprises a hydrogen sulfide liquid separation tank, a hydrogen sulfide low-temperature cooler, a hydrogen sulfide low-temperature liquid separation tank, a hydrogen sulfide heat exchanger and a hydrogen sulfide saline water liquid separation tank. Hydrogen sulfide raw material gas containing carbon disulfide impurities is sequentially introduced into a two-stage low-temperature condensation unit, carbon disulfide is liquefied and separated out preferentially, low-temperature water is adopted in the first stage, and materials subjected to cryogenic compression throttling are adopted in the second stage for heat exchange; pressurizing and compressing the primarily purified hydrogen sulfide gas-phase component, and then condensing and separating to remove trace carbon disulfide and recover cold energy, thereby finally obtaining the high-purity hydrogen sulfide with the purity of more than or equal to 99.95%. According to the invention, a low-temperature two-stage low-temperature condensation-pressurized compression condensation coupling separation technology is adopted, and deep removal of carbon disulfide is realized under the condition that a third component is not introduced.

This invention relates to a method for the liquid-phase adsorption separation and purification of 2,3-dichloronitrobenzene and 3,4-dichloronitrobenzene, belonging to the field of chemical separation. This method for the simultaneous separation and purification of 2,3-dichloronitrobenzene and 3,4-dichloronitrobenzene involves preparing small spherical molecular sieve adsorbents from USY molecular sieves, silicon coupling agent-modified illite, and biomass polysaccharides, which are then loaded into a countercurrent simulated moving bed for separation and purification. This method can simultaneously obtain 2,3-dichloronitrobenzene and 3,4-dichloronitrobenzene with a purity ≥99%. The separation and purification method adopted in this invention is not only energy-efficient and highly effective, but also enables continuous production of two high-purity dichloronitrobenzenes, possessing significant industrial application value.

The utility model relates to the technical field of chemical separation, and discloses a boron trifluoride methyl ether complex feeding distributor of a rectifying tower, which comprises a tower body, an air vent is arranged at the top of the tower body, a fixing component is mounted in the tower body, and a distribution component is mounted in the tower body; the fixing assembly comprises a fixing block, the fixing block is fixedly connected to the interior of the tower body, a fixing frame is placed on the top of the fixing block, a limiting block is fixedly connected to the exterior of the fixing frame, a clamping column is slidably connected to the middle of the limiting block, a clamping groove is formed in the middle of the fixing block, and the clamping groove is connected with the clamping column in a clamped mode. The periphery of the clamping column is sleeved with a spring. According to the utility model, the fixing of the distribution assembly can be quickly completed through the matching of the clamping columns and the clamping grooves; and during maintenance, the device can be easily detached for inspection, maintenance or component replacement.

The invention belongs to the technical field of chemical separation, and relates to a layered bimetal oxide surface modified waste pollen biomass and a preparation method thereof.The preparation method comprises the steps that soluble magnesium salt and lanthanum salt are added into deionized water and ultrasonically dispersed to be uniform, then hexamethylenetetramine is added and ultrasonically dispersed to be uniform, PL-coated Al2O3 is added, a mixed solution is transferred into a reaction kettle, a reaction is conducted for 8-36 h at the temperature of 80-160 DEG C, and the layered bimetal oxide surface modified waste pollen biomass is obtained; after the reaction kettle is cooled to the room temperature, centrifugal separation is conducted, deionized water is used for washing till supernate is neutral, then a powdery product is collected and dried, and the waste pollen biomass PL (at) Mg / La-LDH with the surface modified by the layered bimetal oxide is obtained. The prepared adsorbent is applied to adsorption removal of phosphate in a water body. The adsorbent with the hierarchical structure is obtained through in-situ surface modification by taking the waste biomass as a precursor, the defect of poor adsorption effect of pure biomass can be overcome, the specific surface area of the adsorbent can be increased, the adsorption removal effect of phosphate in a water body can be improved, and the adsorbent has a relatively good application prospect.

The application discloses a high-water-content liquid hazardous waste resourceization and collaborative treatment system and method, and belongs to the technical field of hazardous waste treatment and environmental protection. The system is composed of five units, i.e. hazardous waste receiving and pretreatment, physical and chemical separation, anti-seepage ecological assimilation plant planting, material collaborative treatment and intelligent closed-loop control. For liquid hazardous waste with a water content of 80% or more, oil, water and mud are separated through pretreatment, demulsification, flocculation, precipitation, precision filtration and oxidation treatment. The qualified water is sent to the planting unit to be assimilated by plants, achieving zero leakage, zero external discharge and no pipe connection. The oil phase, sludge solid and mature plants are incinerated in a kiln, heavy metals are solidified in clinker, and flue gas is discharged in a standard way. The application combines resources and ecological assimilation, reduces the pain point of "water burning in the kiln" from the principle point of view, greatly reduces the heat consumption and cost of current high-water-content hazardous waste direct-injection kiln incineration treatment, improves the clinker production capacity and quality, and forms a full-closed-loop resourceization without pollutant leakage.

The invention discloses an ethyl ester rectifying tower butyl ester recovery system and method with side-draw in the field of chemical separation, and the system comprises an ethyl ester rectifying tower body which is provided with 13-17 theoretical plates; the side-line extraction system comprises side-line extraction ports formed in the 13th to 17th theoretical plates of the ethyl ester rectifying tower body, side-line extraction pumps connected with the side-line extraction ports, side-line extraction flow meters mounted on an extraction pipeline, side-line extraction automatic regulating valves and an online gas chromatograph. The problems that a traditional ethyl ester rectification system is high in butyl ester circulation consumption, large in steam energy consumption and high in wastewater organic matter content are solved, the butyl ester unit consumption can be reduced by 0.15-0.25 ton per ton of products, the steam consumption is reduced by 18-22%, the tower top ethyl ester purity reaches 99.92% or above, the wastewater organic matter content is reduced by 30-40%, and the payback period is 8-12 months.

The invention relates to a sulfur isotope electrochemical separation method. The method comprises the following steps: preparing an initial electrolytic tank, a plurality of 34S collecting electrolytic tanks and a plurality of 32S collecting electrolytic tanks; an initial depletion electrode and a first rich collector electrode are installed in the initial electrolytic tank, a second rich collector electrode is installed in the 34S electrolytic tank, and a third rich collector electrode is installed in the 32S electrolytic tank; a pair of electrodes of the initial electrolytic tank are subjected to charge-discharge circulation, 32S is enriched on the first rich electrode, and 34S is enriched on the depletion electrode; the initial depletion electrodes are sequentially put into the 34S collection electrolytic tanks to serve as depletion electrodes, and 34S is enriched on the initial depletion electrodes during charging and discharging; the first rich collector electrode is put into a first 32S electrolytic tank to serve as a depletion electrode, charging and discharging are conducted, and 32S is enriched in a third rich collector electrode; and the rich collector III of the first 32S-collection electrolytic tank is put into the second 32S-collection electrolytic tank to serve as a depletion electrode, charging and discharging are carried out, and 32S is enriched on the original rich collector III of the electrolytic tank.

The utility model discloses a chemical separation device convenient to clean, which comprises a separation tank, a separation mesh barrel is rotatably connected in the separation tank, a plurality of blades are fixedly connected in the separation mesh barrel, and the chemical separation device further comprises a power mechanism, a feeding mechanism and a self-cleaning mechanism. The feeding mechanism can input materials to be separated into the separation net barrel, the power mechanism can drive the separation net barrel to rotate, so that the separation net barrel can drive the materials to turn over and be separated, and the blades fixed in the separation net barrel can push the separated solid materials to be output. And finally, an arranged self-cleaning mechanism can automatically clean the interior of the separation net barrel, the structure is reasonable, automatic feeding and separation of the materials are facilitated, and meanwhile automatic cleaning is facilitated.

The invention discloses preparation of an electrode for an electrochemical separation system and a separation material of the electrode. The preparation method comprises the following steps: selecting a lithium titanium oxide, a layered double-metal hydroxide, a Prussian blue analogue or a layered manganese oxide as a substrate; the method comprises the following steps: introducing an electrochemical active component into a substrate by any one or a combination of the following modes: doping heterovalent or covalent transition metal ions into lattice sites of a substrate material, introducing oxygen vacancies into the substrate by a reducing atmosphere sintering or chemical reduction method, and doping heteroatoms into the substrate material; the method comprises the following steps: removing impurities from a substrate introduced with an electrochemical active component, and then carrying out electrochemical cycle pretreatment to stabilize active sites;

A gas-responsive nano-emulsion separation membrane and its application method, the present application belongs to the field of chemical separation technology, specifically relates to oil-water separation membrane. The separation membrane is woven by polar yarn, the surface of the polar yarn is covered with a polymer coating, the polymer coating is prepared by polymerization reaction of carbon dioxide responsive monomer and hard end monomer; the carbon dioxide responsive monomer is a monomer containing end double bond and tertiary amine response group; the hard end monomer is an unsaturated carbonyl compound containing end double bond; the sum of the warp density and the weft density of the woven is between 300T-400T, the pore size distribution of more than 80-90% of the separation membrane is 0.1-0.3um; the separation membrane is used for separating nano-scale dispersed phase emulsion, the nano-scale dispersed phase emulsion is oil-in-water emulsion or water-in-oil emulsion with dispersed phase particle size of 20nm-50nm. The separation membrane has switchable surface wettability, and can realize on-demand separation of water-in-oil emulsion and oil-in-water emulsion by adjusting the surface wettability.