580 results about "Physisorption" patented technology

The invention discloses a preparation method of a cell inflammatory factor adsorbent, which comprises the following steps: mixing styrene, divinyl benzene and hydroxyethyl acrylate, and adding a pore-foaming agent and mesoporous SiO2 nano powder to prepare a porous microsphere carrier; the preparation method comprises the following steps: mixing chitosan and poly (N-isopropylacrylamide) in an acetic acid solution to obtain a temperature-sensitive chitosan hydrogel precursor solution; the preparation method comprises the following steps: activating the surface of a porous microsphere carrier by using 1-ethyl-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide, mixing the activated porous microsphere carrier and a temperature-sensitive chitosan hydrogel precursor solution to obtain a water phase, and assembling, washing and drying in an oil phase to obtain the cell inflammatory factor adsorbent. Through the design of the core-shell structure and the addition of the mesoporous SiO2 nano powder, the temperature response characteristic and the recyclable characteristic are given to the cell inflammatory factor adsorbent, the adsorption capacity of cell factors is also improved, and a new solution is provided for physical adsorption of the cell inflammatory factors.

The invention provides a biochar composite porous material for heavy metal contaminated soil remediation and a preparation method and application of the biochar composite porous material. The preparation method comprises the steps that biomass raw materials are subjected to high-temperature pyrolysis carbonization and then smashed, ground and sieved, and biochar powder is obtained; dispersing in a phosphoric acid solution to obtain a biochar solution, and filtering, washing and drying after a hydrothermal activation reaction to obtain activated biochar; dispersing in a chitosan solution, carrying out ultrasonic oscillation, filtering, washing and drying to obtain modified charcoal; mixing sodium bentonite, attapulgite and deionized water, uniformly mixing the modified charcoal, the functional slurry and a sodium carboxymethyl cellulose solution to obtain composite slurry, performing compression molding to obtain a green body, and then drying and calcining the green body. The biochar composite porous material prepared by the invention can simultaneously play multiple roles of physical adsorption, chemical chelation, ion exchange and the like in a heavy metal contaminated soil treatment process, so that efficient fixation of various heavy metal ions is realized.

The invention provides phosphorus-doped hydrothermal synchronously-activated hierarchical pore green biochar, a preparation method thereof and application of the phosphorus-doped hydrothermal synchronously-activated hierarchical pore green biochar in formaldehyde adsorption, and belongs to the technical field of biomass resource high-value utilization and air pollution control. The preparation method comprises the following steps: mixing a biomass raw material with a phosphoric acid catalyst, carrying out hydrothermal carbonization reaction, carrying out solid-liquid separation on a reaction product after the reaction is finished, collecting a solid-phase material, drying, mixing with potassium hydroxide, activating, washing and drying the obtained product, and thus obtaining the phosphorus-doped hydrothermal synchronously-activated hierarchical porous green charcoal. Phosphoric acid is introduced in the hydrothermal stage to serve as a structure-directing agent and a doping source, uniform doping of phosphorus and coordinated regulation and control of a pore structure are achieved, a hierarchical pore channel system is formed in the subsequent activation process, and the physical adsorption and chemical fixation capacity of the biochar to formaldehyde molecules is greatly improved.

The invention discloses a hydroxyl-rich ruthenium / titanium dioxide catalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: step 1, loading a ruthenium precursor on a titanium dioxide carrier by adopting an impregnation method or a deposition-precipitation method, and drying and calcining to obtain a Ru / TiO2 catalyst; and step 2, placing the Ru / TiO2 catalyst in an atmosphere environment containing water vapor or forming a physical adsorption water film on the surface of the Ru / TiO2 catalyst, and performing ultraviolet irradiation treatment to obtain the Ru / TiO2 catalyst. According to the method, water is physically adsorbed through ultraviolet light dissociation, hydroxyl is directly generated on the surface of Ru / TiO2 in an in-situ mode, the method is easy to operate, complex liquid phase treatment is not needed, and the stability of the generated hydroxyl under the subsequent high-temperature gas-solid phase hydrogen-rich reaction condition is obviously superior to that of hydroxyl introduced through a traditional method. The stable hydroxyl enriched on the surface serves as an effective Lewis base site and cooperates with a Ru active site, adsorption and activation of CO2 molecules are remarkably promoted, and therefore the catalytic activity of the CO2 methanation reaction is greatly improved.

The present application relates to wastewater treatment technical field, specifically to a kind of ammonia nitrogen wastewater treatment method, the composite modified zeolite material in the present application has excellent physical adsorption capacity to ammonia nitrogen by virtue of its unique pore structure and surface properties, ammonia nitrogen molecules in wastewater can be quickly captured, then through the synergistic effect of composite photocatalyst under light and ultrasonic, strong oxidizing free radicals are generated, ammonia nitrogen molecules not completely adsorbed by zeolite material are deeply degraded, through the synergistic effect of adsorption and photocatalysis, the removal efficiency of ammonia nitrogen is significantly improved;After adsorption and photocatalytic treatment, the ammonia nitrogen concentration in wastewater has been greatly reduced, and resin adsorption treatment is used as a subsequent step, which can selectively adsorb residual trace amounts of ammonia nitrogen and other impurities, thereby realizing deep purification of wastewater and ensuring that the effluent quality meets or exceeds relevant discharge standards.

The invention discloses an efficient and lasting multifunctional refrigerator deodorant which comprises the following components: (a) 50-85wt% of a porous adsorption material with a high specific surface area; (b) 5-30 wt% of a catalyst capable of effectively catalyzing and decomposing organic odor molecules in a low-temperature environment of 0-10 DEG C; and (c) 3 to 15 weight percent of long-acting slow-release type broad-spectrum antibacterial agent. According to the efficient and lasting refrigerator deodorant and the preparation method thereof, the dual effects of physical adsorption and low-temperature catalytic decomposition are utilized, multiple types of peculiar smell molecules can be rapidly adsorbed and thoroughly decomposed, and the deodorization efficiency is remarkably higher than that of a single adsorbent; the service life is greatly prolonged and is 3-5 times that of common activated carbon, the food decay speed is reduced, the food fresh-keeping period is indirectly prolonged, and food safety is guaranteed. The use process is safe and reliable, the use is convenient, external conditions such as illumination and heating are not needed, the device can be directly placed in a refrigerator, the replacement frequency is reduced due to long-term effect, and the comprehensive use cost is low.

The invention relates to a low-dielectric-loss high-thermal-conductivity epoxy resin composite material and a preparation method thereof, and the preparation method comprises the following steps: carrying out surface modification treatment on a thermal conductive filler: carrying out surface modification on the thermal conductive filler by adopting a chemical covalent bonding or physical adsorption mode, the heat-conducting filler is used for improving the compatibility of the filler and an epoxy resin matrix and reducing the interface thermal resistance, and comprises boron nitride with a two-dimensional sheet structure; epoxy resin, a curing agent and an optional modifier are evenly mixed, the epoxy resin is selected from epoxy resin with the low polarity characteristic, and the modifier comprises at least one of thermoplastic resin or elastomer. And the process is simple and controllable.

The invention discloses a compound environment-friendly corrosion inhibitor as well as a preparation method and application thereof. The choline ionic liquid comprises choline ionic liquid and amino acid, the choline ionic liquid is choline cations; the amino acid is one or more of cysteine and tryptophan. The compound environment-friendly corrosion inhibitor has high corrosion inhibition efficiency, and the compound structure of the compound environment-friendly corrosion inhibitor further improves the protection performance of the compound environment-friendly corrosion inhibitor through a dual adsorption mechanism of the synergistic effect of physical adsorption and chemical adsorption on the metal surface. According to the compound environment-friendly corrosion inhibitor, a full-green ionic liquid corrosion inhibition system is constructed, the environment-friendly requirement is met, and a metal protection solution can be provided for industrial acid pickling and other strong acid working conditions. Not only is the progress of a corrosion inhibition technology promoted, but also more economic and environment-friendly anti-corrosion application can be provided for actual industrial scenes.

The invention belongs to the technical field of oil and gas exploitation, and relates to a nanometer desorbing agent for a gas well and a preparation method thereof.The desorbing agent is prepared by using biochar subjected to special pretreatment as a core carrier, loading bimetallic oxide nanoparticles in a specific proportion and carrying out surface modification with an environment-friendly surface active agent. Through the synergistic effect of the nanometer size effect, the catalysis / electron transfer effect of the metal oxide, the physical adsorption and pore transport effect of the biochar and the interfacial tension reduction effect of the surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is remarkably reduced, and efficient desorption of the gas molecules is promoted. Meanwhile, all the components and the preparation process are environment-friendly and harmless to a human body.

The invention discloses a high-temperature-resistant benzimidazolone polyamide imide battery binder as well as a preparation method and application thereof, and belongs to the technical field of battery materials. The high-temperature-resistant benzimidazolone polyamideimide battery binder with uniformly distributed amide segments and imide segments is prepared through a method for activating aromatic diamine on one side of trimethylchlorosilane and changing the activity of amino groups on the two sides, the comprehensive performance of the high-temperature-resistant benzimidazolone polyamideimide battery binder is excellent, the defects that a traditional binder is poor in heat resistance and insufficient in chemical stability are overcome, and the service life of the high-temperature-resistant benzimidazolone polyamideimide battery binder is prolonged. The introduction of high-polarity groups can improve the wettability and ion transmission capability of the electrolyte, improve the solubility of the electrolyte so as to facilitate electrode forming, and can also form strong chemical bonds or physical adsorption with positive and negative inorganic active materials during application, thereby reducing the structural damage in the cycle process and improving the electrochemical performance of the battery. The lithium ion battery electrode can keep a stable structure in a high-temperature environment, the thermal runaway risk caused by high temperature is remarkably reduced, and the application requirements of the lithium ion battery in a fast charging or high-temperature energy storage scene are well met.

The invention relates to the technical field of biomedical materials, and discloses an antibacterial hemostatic material and a preparation method thereof, the antibacterial hemostatic material comprises the following components by weight: 2-3 parts of amino acid terminated polyurethane, 1-3 parts of thiolated chitosan, 3-5 parts of sodium alginate, and 2-4 parts of a polyvinyl alcohol solution. Through the synergistic effect of amino acid terminated polyurethane-sulfhydrylated chitosan-sodium alginate, a dual hemostatic mechanism of physical adsorption-chemical coagulation promotion is constructed: sodium alginate as a natural polysaccharide has strong hydrophilicity and cation adsorption capacity, can quickly absorb moisture in wound blood, concentrate platelets and coagulation factors, and has a good hemostatic effect; thrombin activation is accelerated, and the blood coagulation time is shortened; the antibacterial hemostatic material disclosed by the invention has relatively good antibacterial and hemostatic effects.

The invention discloses a gas concentration-oxidation-heat regeneration system and method, and relates to the technical field of coal mine energy conservation and emission reduction, the gas concentration-oxidation-heat regeneration system comprises a chemical adsorption device which is communicated with low-concentration gas and is used for adsorbing and dedusting the low-concentration gas, and a physical adsorption device which is communicated with the chemical adsorption device and is used for adsorbing and dehumidifying the low-concentration gas, the chemical adsorption device and the physical adsorption device are communicated with the oxidation device through the chemical desorption device and the physical desorption device respectively, the oxidation device is communicated with the waste heat utilization device, and low-concentration gas is subjected to dust removal treatment while methane adsorption is completed through the chemical adsorption device; the physical adsorption device is used for completing methane adsorption and dehumidifying low-concentration gas at the same time, and desorbing is completed and concentrated methane after desorption is subjected to oxidation and waste heat utilization at the same time, so that dust removal, dehumidification, concentration, oxidation and waste heat utilization of the device form a whole, the structure of the device is simplified, and the low-concentration gas is fully utilized.

The invention discloses application of a carbon steel corrosion inhibitor based on combination of physical adsorption, chemical adsorption and hydrophobic barrier, and relates to the technical field of metal corrosion inhibition. The technical problem that a corrosion inhibitor in the prior art is low in corrosion inhibition efficiency in a high-temperature strong-acid environment is solved. The preparation method of the carbon steel corrosion inhibitor comprises the following steps: firstly, ultrasonically dissolving 4-aminopyridine to obtain a solution I; then, dropwise adding an isopropanol solution of 2, 3-epoxypropyltrimethylammonium chloride into the solution I according to a molar ratio of 1: 1, removing a solvent through a rotary evaporation method, washing with ethanol, centrifuging to obtain quaternized 4-aminopyridine, and drying the quaternized 4-aminopyridine; and finally, the dried quaternized 4-aminopyridine and bromododecane are added into acetonitrile for a reaction, diethyl ether is dropwise added into obtained reaction liquid for precipitation, and the quaternized 4-aminopyridine-bromododecane carbon steel corrosion inhibitor is obtained after drying. The prepared carbon steel corrosion inhibitor is high in corrosion inhibition efficiency in a high-temperature and strong-acid environment.

The invention relates to the technical field of water treatment, in particular to a method for treating degradation-resistant organic pollution underground water based on a micro-interface strengthening technology. According to the technical scheme, the method comprises the steps that an underground water sample is collected and subjected to pollution characteristic analysis, composite material slurry is injected into a water-containing layer to construct an interface-enhanced in-situ reaction system, and the slurry is composed of nanoscale iron-based metal particles, graphene oxide derivatives, modified biochar, a surfactant and the like; meanwhile, a low-pressure gas injection system is arranged to form a micro-aerobic environment so as to improve the interface reaction efficiency, dominant microbial communities are synchronously injected, a slow-release carbon source carrier is added so as to strengthen the biological synergistic degradation effect, and the operation state of the system is regulated and controlled through multi-parameter monitoring. According to the method, a micro-interface synergistic system integrating physical adsorption, chemical reduction and biological metabolism is constructed, refractory organic pollutants such as aryl halide and polycyclic aromatic hydrocarbon in underground water can be efficiently and stably removed, and the method has the advantages of being high in remediation efficiency, high in operation stability and wide in environmental adaptability.

The ardealite-based recycled aggregate is prepared from the following components in parts by weight: 360 to 480 parts of ardealite, 500 to 600 parts of mineral powder, 30 to 60 parts of steel slag, 50 to 90 parts of cement, 35 to 70 parts of zeolite, 5 to 20 parts of natural vegetable wax powder, 2 to 10 parts of octyltriethoxysilane and 300 to 350 parts of water. The preparation method comprises the following steps: crushing the phosphogypsum, and uniformly mixing and stirring with the mineral powder, the steel slag, the zeolite and the cement to obtain a mixture A; uniformly mixing and stirring the water, the natural vegetable wax powder and the octyltriethoxysilane to obtain a mixture B; uniformly stirring the mixture A and the mixture B, injecting into a mold, vibrating and compacting, standing at 20-25 DEG C for 24 hours, demolding, and laminating and curing for more than 7 days; crushing into particles of 5-20 mm, and naturally curing for 28 days or more to obtain the phosphogypsum-based recycled aggregate. The consumption of the phosphogypsum is improved, the cement consumption is reduced, harmful substances are fixed through double mechanisms of physical adsorption and ion exchange, and meanwhile, a stable hydrophobic layer is formed in the concrete aggregate to reduce the water absorption rate.

The invention discloses a preparation method and application of doped hierarchical porous manganese dioxide, and belongs to the field of catalyst preparation and air purification. According to the invention, potassium permanganate is used as a manganese source and an oxidizing agent, a modified reducing agent is added, mixing and stirring reaction are carried out at room temperature, and the doped hierarchical porous manganese dioxide catalyst is synthesized after washing, drying and high-temperature treatment. The preparation method is simple in preparation process and high in repeatability; the prepared manganese dioxide realizes doping of potassium ions and formation of oxygen vacancies, and the catalytic activity of the manganese dioxide is improved; the doped manganese dioxide catalyst has a multi-stage structure of micropores, mesopores and macropores, the multi-stage pore structure endows the doped manganese dioxide catalyst with a relatively large specific surface area, the physical adsorption capacity of the doped manganese dioxide catalyst can be improved, and meanwhile, more active sites are exposed, so that the doped manganese dioxide catalyst shows relatively high activity and stability in a reaction for catalytically oxidizing gaseous pollutant formaldehyde at room temperature.

The invention belongs to the field of biological refining of grease, and particularly relates to a grease degumming method based on a phospholipase micromotor reactor. The invention discloses an enzymatic degumming method of edible vegetable oil, algal oil and animal fat, which aims at the pain points of low degumming efficiency, long time consumption, easy enzyme inactivation and difficult recovery of the traditional enzymatic degumming, designs core-shell mesoporous silica microspheres, adopts an emulsion method to respectively graft alkyl and alkylamine on two sides of the microspheres, constructs a Janus carrier with asymmetric chemical environment, and improves the degumming efficiency of the edible vegetable oil, the algal oil and the animal fat. And immobilizing phospholipase A1, A2, B or C through physical adsorption to prepare the phospholipase micromotor reactor. In the degumming process, a micromotor cooperates with an interface activation-enhanced mass transfer-dynamic self-cleaning mechanism, self-driven movement in an interface micro-scale range is realized by virtue of a substrate concentration gradient, the enzyme activity and stability of phospholipase are remarkably improved, and efficient degumming of grease is realized. The method is high in oil yield, green in process and suitable for industrial popularization.

The invention discloses a periodontal local drug delivery system with antioxidant, anti-inflammatory and antibacterial synergistic effects and a preparation method of the periodontal local drug delivery system, and belongs to the technical field of pharmaceutical preparations. The preparation method comprises the following steps: firstly, preparing an organic phase from DSPC, cholesterol, SA and resveratrol, and preparing a cationic liposome by taking PBS as a water phase; then preparing a water phase from AlgMA and LAP, taking a surfactant solution as an oil phase, and preparing polydopamine hydrogel microspheres through PDA surface modification; and finally, carrying out physical adsorption loading. Through the synergistic effect of the resveratrol, the cationic liposome and the polydopamine, a periodontitis pathological chain is comprehensively intervened, synergistic treatment is achieved, excellent antibacterial performance, anti-inflammatory effect and antioxidant effect are achieved, the retention rate of the medicine is increased, and the problems that traditional treatment medicine cannot achieve antibacterial, inflammation regulation and oxidative stress synergistic treatment at the same time, and the treatment effect is poor are solved. The residence time of the medicine in the periodontal pocket is short, and frequent administration is needed.

The present invention belongs to the field of nano drug preparations, and discloses a multifunctional nanozyme platform and its preparation method and application, which is mainly composed of nanozymes, carrier materials and targeting substances. The synthesis of nanozymes, the loading of nanozymes on carrier materials and the modification of their surface targeting substances are carried out by methods such as stirring synthesis, coprecipitation, strong acid oxidation, chemical reduction, covalent bonding, solvent thermal method, physical adsorption, etc. The targeting substance on the surface of the nanozyme platform can be accurately and efficiently positioned to the inflammation site, and the acidic microenvironment of the inflammation site causes the targeting substance and the carrier material to undergo structural depolymerization, thereby releasing a variety of nanozymes, which not only realize the self-cascade and synergistic catalytic enhancement of enzymes at the inflammation site, but also form a substrate self-circulation catalytic system, thereby achieving the effect of efficiently alleviating and treating various inflammation-related diseases.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The invention provides a low-pressure normal-temperature physical adsorption type hydrogen storage tank, and belongs to the technical field of hydrogen storage equipment, the low-pressure normal-temperature physical adsorption type hydrogen storage tank comprises a fractal flow channel supporting structure, a carbon nano tube block and a sealing tank body, the fractal flow channel supporting structure is arranged in the sealing tank body, and the fractal flow channel supporting structure comprises a main flow channel supporting body and a plurality of branch flow channel supporting bodies; a plurality of branch flow channel supporting bodies are communicated with the main flow channel supporting body, carbon nano tube blocks are arranged on the branch flow channel supporting bodies, the carbon nano tube blocks are in a cup shape, and a hydrogen conveying pipeline and a hydrogen discharging pipeline are arranged at the two ends of the sealed tank body respectively. A coupling system of a fractal flow channel supporting structure and a cup-shaped carbon nano tube module is constructed, hydrogen can be efficiently stored under the normal temperature and low pressure through the physical adsorption effect, the surface of a carbon nano tube can provide a larger surface area, the adsorption sites of the hydrogen can be increased, and the breakthrough improvement of the hydrogen storage performance under the working conditions of low pressure and normal temperature is achieved.

The invention discloses a preparation method of a pesticide pollution remediation agent for groundwater of karst landforms, and relates to the technical field of groundwater pollution remediation. The method has the effect of enhancing pesticide degradation, pesticide pollutants can be efficiently degraded in a complex environment of karst underground water by compounding hard water-resistant fungi, dehalogenation bacteria and denitrifying bacteria, and a better remediation effect is achieved; the medicament can improve the stability and the adsorption capacity of the carrier, the bionic calcium phosphate nano carrier is adopted, the specific surface area is high, the adsorption capacity is excellent, the adsorption capacity on pollutants can be effectively enhanced, and the remediation effect is improved; the agent has an efficient repairing mechanism, the load capacity of the flora is enhanced through biological induction mineralization and physical adsorption enhancement of a bacterium-carrier complex, the release rate of the flora is controlled through an intelligent coating technology, and precise repairing is achieved.

The invention discloses a preparation method and application of sodium gallate-polyphenol chitosan antibacterial hydrogel, firstly, gallic acid and sodium acetate are used as raw materials, a high-purity sodium gallate complex 5-carboxyl-2, 3-sodium dihydroxyphenolate is prepared at normal temperature and normal pressure, then a polyphenol compound and chitosan are cross-linked through Schiff base reaction, and the sodium gallate-polyphenol chitosan antibacterial hydrogel is obtained. And finally, carrying out rotary evaporation treatment, so that the sodium gallate is loaded in the polyphenol chitosan hydrogel system to obtain the antibacterial hydrogel. Sodium gallate is used as a functional component, uniform loading of sodium gallate in a polyphenol chitosan hydrogel system is realized through dual effects of physical adsorption and chemical bonding, the loading mechanism can effectively avoid aggregation and burst release of sodium gallate, stable release of antibacterial components is ensured, and the antibacterial property of the hydrogel is improved. The slow release time of the antibacterial hydrogel under the conditions that the pH values are 5.5 and 7.2 respectively exceeds 24 hours; and the antibacterial hydrogel has an inhibition effect on both gram-positive bacteria and gram-negative bacteria.

The application discloses a method for reducing water content and water absorption of solid electrolyte. It relates to the field of solid or semi-solid batteries. The method for reducing water content and water absorption of solid electrolyte comprises the following steps: S1, heating the solid electrolyte powder by using infrared heating mode to remove water and / or impurity organic matter adsorbed on the surface of the solid electrolyte powder; S2, making the solid electrolyte powder in a fluidized state, heating and vaporizing low-surface-energy organic matter, and making the generated organic vapor contact with the solid electrolyte powder in the fluidized state in an inert atmosphere, wherein the temperature of the solid electrolyte powder in the fluidized state is lower than that of the organic vapor. The application aims to solve the technical problem that high specific surface area inorganic solid electrolyte powder is easy to physically adsorb water in air.

This invention provides a photocatalytic treatment device and method for treating yellow water. The photocatalytic treatment device includes, in sequence, an ammonia stripping and collection chamber, a reaction crystallization chamber, a columnar adsorption chamber, a photocatalytic reaction chamber, an anoxic conversion chamber, and an aerobic separation chamber. The treatment device first adds a denitrification aid during aeration, improving stripping efficiency. The stripped ammonia is recovered and reused, avoiding secondary pollution. Second, a mixed packing material of biochar and magnesium oxide is used to recover nutrients such as nitrogen and phosphorus from urine through physical adsorption and chemical precipitation. Finally, the treatment device provided by this invention has a simple structure, is easy to install and operate, and simultaneously achieves wastewater reuse, reaching the goal of zero wastewater discharge and conserving water resources.

The application relates to a pyrone-based chelating resin, a preparation method thereof and a method for removing impurities. The main chain skeleton of the pyrone-based chelating resin is a styrene-based adsorption resin, and at least one pyrone functional group is branched on the side chain. The multi-oxygen structure of the pyrone functional group and the nitrogen atom on the main chain skeleton can produce strong coordination with aluminum ions, and a stable six-membered ring chelate is formed through a chelation reaction, thereby showing excellent selective aluminum removal performance. Meanwhile, the pyrone functional group has acid-base properties, can undergo ion exchange reaction or physical adsorption with organic matters, and thus can effectively remove TOC in a water environment. Therefore, by using the pyrone-based chelating resin provided in the application, the aluminum ions and TOC in a rare earth solution can be efficiently removed through the synergistic cooperation of the multi-oxygen coordination effect and the selective ion exchange capacity, and the loss rate of the rare earth ions is obviously reduced.

The invention discloses a modified activated carbon adsorption material with carboxyl functionalization and grading holes and a preparation method of the modified activated carbon adsorption material, and belongs to the technical field of adsorption materials. A biomass carbon raw material is subjected to hydrothermal carbonization and then mixed with KOH for activation, a solid-phase material is collected, dried and then mixed with HNO3, the mixture is heated in a water bath, the modified activated carbon adsorption material with carboxyl functionalization and graded pores is obtained, introduction of oxygen-containing functional groups and coordinated regulation of a pore structure are achieved, and the adsorption efficiency is improved. A hierarchical pore channel system and a polar surface are formed, so that the physical adsorption and chemical fixation capabilities of the modified activated carbon material on formaldehyde molecules are greatly improved. The specific surface area of the modified activated carbon adsorption material provided by the invention can reach 1454.8 m < 2 > / g, and the pore volume can reach 0.86 cm < 3 > / g; under a dynamic condition, an efficient adsorption state can be kept for a long time, and the saturated adsorption capacity can reach 650mu g / g.

A method for inhibiting corrosion of a metal article in contact with a solution including an acid includes adding to the solution a corrosion inhibitor in an amount of 1 to 500 parts per million (ppm) based on the total number of parts by mass of the solution, thereby adsorbing the corrosion inhibitor onto the surface of the metal article via at least one interaction to form a barrier layer in the form of a composite. The at least one interaction comprises a physisorption, a chemisorption, and a retro donation. The corrosion inhibitor has a formula (I)where n is any integer from 8 to 21 inclusive and R1, R2, R3, R4, and Rs are each independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an optionally substituted alkyl, an optionally substituted cycloalkyl, and an optionally substituted alkoxy.

The invention provides an electrolyte, a lithium iron manganese phosphate battery and an electric device. The electrolyte comprises a lithium salt and a solvent, the solvent comprises ethylene carbonate, propylene carbonate, ethyl methyl carbonate, fluorobenzene and a low-viscosity solvent in a volume ratio of (2-5): (2-5): (3-5): (3-5): (2-5). The high dielectric constants of ethylene carbonate and propylene carbonate improve the dissolving capacity of the electrolyte to lithium salt, and meanwhile, the molecular structure can form a stable interface layer on the surface of a positive electrode to inhibit migration and dissolution of manganese ions; due to the low viscosity characteristic of the low-viscosity solvent, the overall viscosity of the electrolyte is reduced, and the permeability of the porous positive electrode material is enhanced, so that the wettability is improved, and uniform de-intercalation of lithium ions is promoted; a physical adsorption protection layer can be formed on the surface of the positive electrode through the coordination effect of high-electronegativity fluorine atoms in fluorobenzene and manganese, and direct contact between manganese and electrolyte is further blocked.

The invention provides an iron-carbon composite material and a preparation method and application thereof.The iron-carbon composite material is of a porous structure and is composed of micropores and / or mesopores with the pore diameter ranging from 1 nm to 5 nm and macropores with the pore diameter ranging from 100 nm to 10 [mu] m, or composed of mesopores with the average pore diameter ranging from 2 nm to 4 nm and macropores with the pore diameter ranging from 100 nm to 10 [mu] m, the specific surface area of the iron-carbon composite material is 200m < 2 > / g-300m < 2 > / g, and the existence forms of the iron element comprise FeO, Fe2O3, Fe3O4, Fe3C and Fe2C. The iron-carbon composite material prepared by the invention has both chemical adsorption and physical adsorption, and has high adsorption efficiency on sulfur-containing compounds in water. The iron-carbon composite material is wide in material source, simple in preparation process and low in development cost, large-scale production is easy to realize, and the iron-carbon composite material has great application potential in refining and chemical wastewater treatment.