93 results about "Sodium oxalate" patented technology

The invention relates to the technical field of wave-absorbing materials, in particular to a preparation method of an MXene-NiO-PPy ternary composite wave-absorbing material. The invention provides a preparation method of an MXene-NiO-PPy ternary composite wave-absorbing material, which comprises the following steps of: etching titanium aluminum carbide powder through a LiF / HCl mixture, and performing ultrasonic stripping to prepare a uniform dispersion of MXene nanosheets; the preparation method comprises the following steps: dispersing MXene nanosheets in a solution of water and absolute ethyl alcohol, and adding a pyrrole monomer and a FeCl3. 6H2O aqueous solution for reaction; after the reaction, washing is performed to obtain a PPy-MXene composite material; the preparation method comprises the following steps: by taking NiCl2. 6H2O as a nickel source and sodium oxalate as a precipitator, preparing NiO nanowires by adopting a hydrothermal method combined with a calcining process; the invention discloses a preparation method of an MXene-NiO-PPy ternary composite wave-absorbing material.According to the method, the MXene-NiO-PPy ternary composite wave-absorbing material with rich heterogeneous interfaces and a porous micro-nano structure is constructed, cooperation of dielectric loss, magnetic loss and interface polarization loss is achieved, and finally the light, efficient and broadband wave-absorbing performance is obtained.

The invention discloses a water-based compensation sodium source sodium ion battery positive pole piece and a preparation method thereof. Mixing a positive active material, a conductive agent, a water-based binder, a water-soluble sodium supplement agent and a solvent to obtain positive slurry; wherein the water-soluble sodium supplement comprises sodium nitrite, sodium oxalate and sodium citrate; the solvent is water; and coating the surface of a current collector with the positive electrode slurry to prepare the positive electrode plate. Deionized water is used for replacing a traditional organic solvent to serve as a pulping solvent, and dual-function optimization is achieved by adding a specific water-soluble sodium supplementing agent. The sodium supplementing agent is uniformly distributed in the pole piece through a dissolution-recrystallization mechanism, and an efficient sodium ion pre-compensation system is formed. According to the method, the production cost and the energy consumption are remarkably reduced, the structural degradation of the positive active material in a water system environment can be effectively inhibited, irreversible sodium loss caused by formation of a first-week solid electrolyte interface (SEI) of a negative electrode is counteracted through a sodium source compensation mechanism, and the method has remarkable environmental friendliness and industrial application value.

An integrated energy system comprising a power plant configured to generate steam. The power plant can include a nuclear reactor and / or an electrical power generation system. A chemical products generation system can include a first reaction chamber receiving Sodium Formate (HCOONa) that, via insertion of a first portion of the steam at a first temperature, is decomposed into Sodium Oxalate ((COO)2Na2) and Hydrogen (H2), the steam including super-heated steam. The chemical products generation system can include a second reaction chamber receiving the Sodium Oxalate ((COO)2Na2) that, via insertion of a second portion of the steam at a second temperature, is decomposed into Sodium Oxide (Na2O), Carbon Monoxide (CO), and Carbon Dioxide (CO2). A syngas generation system can be operably coupled to the chemical products generation system and configured to generate a combination of the Hydrogen (H2), the Carbon Monoxide (CO), and / or the Carbon Dioxide (CO2), and / or to generate syngas.

An integrated energy system including a power plant is discussed herein. In some examples, the integrated energy system may include at least one nuclear reactor and electrical power generation system configured to generate steam and electricity, a water treatment plant configured to produce Sodium Hydroxide (NaOH) from salt water, a Sodium Formate (HCOONa) production plant configured to receive the Sodium Hydroxide (NaOH) to produce Sodium Formate (HCOONa), a Thermal Decomposition reactor configured to receive the Sodium Formate (HCOONa) and configured to receive at least a first portion of the steam or at least a second portion of the electricity from the power plant to indirectly heat the Thermal Decomposition reactor to produce Hydrogen (H2), Carbon Dioxide (CO2), and Carbon Monoxide (CO) from the Sodium Formate (HCOONa), and a Methanol (CH3OH) reaction chamber configured to receive the Hydrogen (H2), the Carbon Dioxide (CO2), and the Carbon Monoxide (CO) to produce Methanol (CH3OH).

The invention belongs to the technical field of catalyst preparation, and particularly relates to an ozone catalyst for water treatment and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing iron-manganese modified zeolite subjected to hot water treatment, TEOS hydrolysate, VTMS hydrolysate, a VSNa solution, divinyl benzene, an initiator, sodium chloride and CMC to obtain slurry, treating the slurry into wet particles, and drying the wet particles to obtain the ozone catalyst for water treatment. Carrying out heating curing treatment on the wet particles to obtain a catalyst precursor, washing the catalyst precursor with deionized water, and then carrying out heat treatment and cooling to obtain the catalyst. The method can effectively reduce the effluent COD of the petrochemical wastewater containing sodium oxalate, and is high in long-term use stability.

The present invention discloses a method for the simultaneous detoxification of organotin waste and the preparation of sodium stannate. The method comprises mixing the organotin waste with a composite additive comprising sodium oxalate and hydrogen peroxide as active ingredients, followed by spray combustion. The combustion exhaust is subjected to dust removal to recover a tin-rich material, which is then water-leached to obtain a sodium stannate solution. By adding sodium oxalate and hydrogen peroxide during the combustion and decomposition of the organotin waste, the method not only enhances the thermal conversion process of the organotin compound, converting its toxic organic functional groups into harmless CO2 and H2O emissions, but also promotes dioxin decomposition, sulfur fixation, and suppresses NOx generation. Furthermore, the method efficiently converts tin into sodium stannate, which is easily recovered by water leaching. The method is simple to operate, highly efficient, and environmentally friendly.

The present invention discloses a Prussian blue-based sodium-ion battery positive electrode material, a preparation method, and applications thereof. The method comprises: mixing sodium ferrocyanide, oxalate, and a non-aqueous solvent, subjecting the mixture to a ball-milling reaction, and washing the product after the ball-milling reaction to remove unreacted raw materials and a portion of sodium oxalate generated by the reaction, thereby obtaining the Prussian blue-based sodium-ion battery positive electrode material. The present invention can synthesize Prussian blue-based compounds with low defects and low interstitial water molecule content, thereby improving the sodium storage performance and capacity utilization of such materials; it also reduces the probability of side reactions in the electrolyte causing cell bloating. In addition, the use of oxalate-based raw materials can also generate a sodium oxalate-based positive electrode sodium supplement during the synthesis of the Prussian blue-based compound, thereby replenishing sodium ion loss caused by SEI film formation or other side reactions during the initial charge.

The invention relates to a sodium-ion battery and application thereof.The sodium-ion battery comprises a positive plate, a diaphragm, a negative plate, electrolyte and a current interruption device, and the sodium-ion battery meets the following two conditions that (1) a positive active material layer of the positive plate contains gas production particles and auxiliaries, the gas production particles are selected from sodium carbonate and / or sodium oxalate, the auxiliary agent is selected from ferric chloride and / or aluminum chloride, and the mass fraction of the gas production particles in the positive electrode active material is greater than that of the auxiliary agent in the positive electrode active material layer; the sum of the mass fractions of the gas generation particles and the auxiliary agent in the positive electrode active material layer is within 4%; and (2) the trigger threshold value of the current interruption device is 0.55 MPa to 0.85 MPa. According to the sodium ion battery disclosed by the invention, the potential safety hazard of the traditional sodium ion battery under the working conditions of overcharge and thermal abuse can be solved by optimizing the synergistic effect of the internal gas production mechanism of the battery cell and the CID trigger threshold value.

The invention provides a method for synergistically removing organic matters in an aluminum oxide production process, and belongs to the field of aluminum oxide production. The method comprises the following steps: adding a macromolecular organic matter oxidant into a sodium aluminate solution, and carrying out a stirring reaction to degrade macromolecular organic matters in the sodium aluminate solution into medium and small molecular organic matters, so as to obtain a first mixed solution; carrying out solid-liquid separation on the first mixed solution to obtain a first filtrate; adding a sodium oxalate adsorbent into the first filtrate, and carrying out stirring reaction, so that sodium oxalate in the first filtrate is subjected to controlled crystallization on the surface of the sodium oxalate adsorbent to obtain a second mixed solution; carrying out solid-liquid separation on the second mixed solution to obtain a second filtrate; and returning the second filtrate to the aluminum oxide production process. Through a step-by-step targeted treatment design, the limitation of single type of removed organic matters in the existing organic matter removal technology is effectively overcome, and meanwhile, by virtue of an adsorbent mediated crystallization mechanism, the problem that the sodium oxalate crystal morphology is difficult to effectively control is solved.

A process for producing a nitrogen-doped peony-shaped molybdenum oxide, comprising the following steps: (1) adding a regulator to a molybdenum-containing solution for reacting, concentrating and thermally treating to obtain a peony-shaped molybdenum oxide; and (2) dissolving the peony-shaped molybdenum oxide in a conditioning agent and adding an amine source for standing, centrifuging, washing, and heat-treating, thereby obtaining the nitrogen-doped peony-shaped molybdenum oxide; wherein the regulator is at least one of the following: nitric acid, ammonium nitrate, sodium persulfate, ammonium persulfate, concentrated sulfuric acid, H2O2, ozone, sodium hypochlorite, wherein in step (2), the conditioning agent is at least one of the following: sodium acetate, ammonium acetate, sodium formate, diaminoethane, sodium oxalate, ammonium benzoate, sodium phenylacetate, sodium propionate, sodium tartrate, sodium citrate, ammonium citrate; and wherein in step (2) the amine source is at least one of the following: aniline, dimethylamine, trimethylamine, benzylamine, phenethylamine, ethylamine, diethylamine, propylamine, phenylenediamine, xylylenediamine, amphetamine.

An integrated energy system comprising a power plant configured to generate steam. The power plant may comprise a nuclear reactor and / or an electricity generation system. A chemical product generation system may comprise a first reaction chamber that receives sodium formate (HCOONa), which decomposes into sodium oxalate ((COO)2Na2) and hydrogen (H2), via the insertion of a first portion of steam at a first temperature, wherein the steam may comprise a first reaction chamber containing superheated steam. A chemical product generation system may comprise a second reaction chamber that receives sodium oxalate ((COO)2Na2), which decomposes into sodium oxide (Na2O), carbon monoxide (CO), and carbon dioxide (CO2), via the insertion of a second portion of steam at a second temperature. A syngas generation system may be operably connected to the chemical product generation system and configured to generate a combination of hydrogen (H2), carbon monoxide (CO), and / or carbon dioxide (CO2), and / or syngas.

The application discloses a kind of corrosion methods for revealing alloy sample metallographic structure, comprising: step S1, preparation electrolytic etchant: using oxalic acid, sodium bicarbonate and concentrated nitric acid preparation final concentration is 0.25-0.5mol / L sodium oxalate and 0.15-0.3mol / L nitric acid mixed aqueous solution;Step S2, electrolytic etching of corrosion piece: electrolytic etchant is poured into electrolytic etching instrument, and the alloy sample to be corroded is placed in electrolytic etching liquid and electrolytic etching is carried out.The electrolytic etchant of the application uses oxalic acid, sodium bicarbonate and concentrated nitric acid as reactant, and is prepared by chemical ion reaction.After the preparation of etchant is finished, a small amount of carbonate ions and hydrogen ions are still stored in the etchant, so that a small amount of carbonate ions and hydrogen ions will continue to react when the alloy sample is electrolyzed, and micro-bubbles are attached to the alloy sample, so that the metallographic photo taken has stereoscopic imaging effect, and the grain boundary is clear and identifiable.

A method for efficiently recovering cobalt and nickel from waste lithium battery extract belongs to the field of hydrometallurgical technology. The technical problem solved by this invention is to provide a low-cost, low-pollution, and high-efficiency method for recovering cobalt and nickel from waste lithium battery extract. Specifically, it discloses a method using sodium oxalate solution to back-extract from a nickel-cobalt containing extract, obtaining a back-extract, then precipitating by adjusting the pH, and finally obtaining cobalt oxalate and nickel oxalate products after drying. The method includes the following steps: (1) preparing a sodium oxalate solution; (2) back-extraction; (3) cobalt precipitation; (4) nickel precipitation; (5) washing and drying the precipitate. This method is not only simple to operate, highly efficient, low-cost, and environmentally friendly, but also regenerates the extract, making it suitable for industrial production.

The present application provides a kind of high-efficiency polymerization inhibitor for styrene rectification, by weight parts, including following each component: 20-40 parts of radical scavenger, 15-25 parts of modified alkylamine and 50-100 parts of composite alcohol solution, 2-4 parts of sodium citrate and 1-3 parts of sodium oxalate;The radical scavenger is porous calcium carbonate microspheres loaded with nitroxyl radical and plant extract;The modified alkylamine is layered double hydroxide LDH loaded with alkylamine;The composite alcohol solution is ethylene glycol, glycerol and polyvinyl alcohol;It is applied to styrene rectification, and the polymerization inhibition capacity is obviously improved by efficient capture of free radical.

The invention discloses a degreasing agent for a base plate of a cold-rolled hot-dip aluminum-zinc steel plate and a degreasing method, and mainly solves the technical problems that an existing degreasing agent for the base plate of the cold-rolled hot-dip aluminum-zinc steel plate is low in degreasing efficiency, and oxides on the surface of the steel plate cannot be completely removed. According to the technical scheme, the degreasing agent for the base plate of the cold-rolled hot-dipped aluminum-zinc steel plate comprises the following components in percentage by weight: 10%-25% of sodium hydroxide, 5%-15% of potassium hydroxide, 3%-6% of a surfactant OP-10, 4%-8% of sodium dodecyl benzene sulfonate, 1%-2% of fatty alcohol polyoxyethylene ether sodium sulfate, 2%-10% of sodium oxalate and the balance of water. 2%-5% of sodium gluconate, 1%-5% of potassium chloride, 2%-4% of organic silicon defoaming agent and the balance of deionized water. The degreasing agent is suitable for removing residual oil and iron oxide on the surface of a base plate of a cold-rolled hot-dipped aluminum-zinc steel plate, the degreasing capacity and the iron removal capacity are high, and the using effect is good.

The invention discloses a method for extracting scandium from a byproduct FeSO4 # imgabs0 # H2O in a sulfuric acid process titanium dioxide waste acid concentration process, and belongs to the field of valuable resource recovery. The method comprises the following steps: mixing and dissolving FeSO4 # imgabs1 # H2O and water, filtering to obtain a ferrous sulfate solution, freezing, crystallizing and filtering to obtain a scandium-containing solution, and circulating for multiple times to increase the scandium concentration; then ferric iron in the solution is reduced, the pH is adjusted with barium hydroxide, scandium is precipitated, and a mixed solid of barium sulfate and scandium hydroxide is separated out; the method comprises the following steps: dissolving scandium hydroxide with acid, filtering and washing, precipitating scandium with oxalic acid or sodium oxalate, and finally roasting scandium oxalate at high temperature to prepare scandium oxide with Sc2O3 greater than or equal to 99.99% and Sc2O3 / REO greater than or equal to 99.9999%. The method has the advantages of being convenient to operate, simple in technological process, low in production cost and good in environmental protection benefit, industrialization is easy, the scandium element in the sulfuric acid process titanium dioxide waste acid concentration byproduct can be efficiently recycled, and efficient utilization of resources is achieved.

The present application relates to the technical field of lithium carbonate preparation, in particular to a method for preparing battery-grade lithium carbonate by using salt lake lithium carbonate, comprising the following steps: adding purified water and ethanolamine to crude lithium carbonate from salt lake brine, wet ball milling, then adding sodium hydroxide solution for alkali washing, adopting purified water to make slurry of the obtained filter residue A, carbonizing to obtain filter liquor B, adding magnesium chloride and sodium oxalate in sequence for impurity removal, pyrolyzing and crystallizing, drying the obtained lithium carbonate wet product to obtain battery-grade lithium carbonate. The method has the advantages of high purification process treatment efficiency and high lithium recovery rate, and the prepared lithium carbonate product can meet the requirements of battery-grade lithium carbonate.

The application provides a method for preparing lead oxide from copper smelting electric dust ash, and comprises the following process steps: (1) sulfuric acid leaching: adding sulfuric acid; (2) acetic acid leaching: adding acetic acid; (3) ammonia water-sodium acetate leaching: adding ammonia water and sodium acetate; (4) lead precipitation: adding sodium oxalate; (5) lead oxide. The application adopts twice acid leaching, on the one hand, valuable metals in the copper smelting electric dust ash except lead are effectively leached; on the other hand, impurity elements in the acid leaching residue are reduced, and high-purity lead oxide products are prepared subsequently. The lead element in the acid leaching residue is leached by ammonia water-sodium acetate, and under the weak alkaline condition, the leaching of lead is beneficial, and the leaching of other elements such as copper, arsenic and zinc is inhibited.

The invention relates to the technical field of battery materials, in particular to a sodium ion battery positive electrode material and a preparation method and application thereof. The sodium ion battery positive electrode material is prepared by the method. The method comprises the following steps: carrying out ultrasonic treatment on a reaction system, and then carrying out heating and stirring treatment to obtain a precipitate mixed solution; carrying out centrifugal treatment on the precipitate mixed solution to obtain a coarse precipitate; washing and centrifuging the coarse precipitate to obtain a precipitate; performing freeze drying treatment on the precipitate to obtain precursor powder; and uniformly mixing the precursor powder, the nano TiO2 powder, anhydrous sodium carbonate and sodium oxalate, and sequentially carrying out ball milling treatment, screening treatment, tabletting treatment and calcination treatment to obtain the sodium ion battery positive electrode material. The application is the application of the sodium ion battery positive electrode material in a sodium ion secondary battery. According to the invention, the problems of irreversible structure phase change and high sodium ion diffusion barrier in charge-discharge cycles due to the adoption of O3-phase layered transition metal oxide in the existing commercial sodium ion positive electrode material are solved.

The invention provides an alkaline chemical polishing solution suitable for a high-Si-content aluminum alloy inner runner and a polishing method, and belongs to the technical field of metal material surface treatment. According to the method, an alkaline polishing solution composed of sodium hydroxide, sodium nitrate, thiourea, sodium silicate, sodium phosphate, sodium fluoride, ceric sulfate and an additive is adopted for conducting long-time chemical polishing on the high-silicon aluminum alloy at the room temperature, and dilute acid neutralization, acetic acid activation and sodium oxalate and sodium dodecyl benzene sulfonate composite cleaning solution are matched for ultrasonic dust removal. According to the technology, nitric oxide pollution generated by acid polishing is avoided, the corrosion rate is reduced, effective polishing of a complex inner runner is achieved, the surface roughness is remarkably reduced, material loss is small, hanging dust is completely removed, and the technology has environment friendliness and high-precision machining capacity.

The invention belongs to the field of pet food processing, and relates to a premix for improving the health of urinary tracts of pets. The premix comprises the following components in parts by weight: 25-35 parts of Chinese yams, 25-35 parts of poria cocos, 15-25 parts of dandelions, 15-25 parts of centella asiatica, 15-25 parts of semen plantaginis, 5-15 parts of rhizoma polygonati, 5-15 parts of dogwood and 5-15 parts of Chinese wolfberry fruits. By adding the premix disclosed by the invention into daily ration, the concentrations of cat blood creatinine, urea nitrogen and blood oxalic acid are reduced, the absorption and excretion of oxalic acid are influenced, and the formation of calcium oxalate calculi is prevented. The premix disclosed by the invention can relieve the kidney toxicity of sodium oxalate to cats, improve the physiological indexes of the kidneys, reduce the formation of calcium oxalate calculi and provide basic guarantee for the treatment of chronic urinary system diseases. The premix disclosed by the invention can be used for improving the urinary tract health of cats.

This application provides a method for deep removal of calcium impurities from scandium oxide, belonging to the field of rare earth metal oxide purification. The method includes: dissolving scandium oxide raw material containing calcium impurities to obtain a calcium-containing scandium solution; adding a pH adjuster to the calcium-containing scandium solution to obtain a first scandium solution; reacting the first scandium solution with phosphoric acid and / or phosphate to obtain a second scandium solution and solid calcium phosphate; reacting the second scandium solution with a complexing agent to obtain a third scandium solution; reacting the third scandium solution with oxalic acid and / or sodium oxalate to obtain scandium oxalate crystals and a calcium complex solution; adding a strong acid solution to the calcium complex solution; and calcining the scandium oxalate crystals to obtain scandium oxide. Through calcium phosphate precipitation-complexation-crystallization, not only can calcium impurities be deeply removed from scandium oxide products, but impurities such as iron, titanium, and zirconium can also be removed, resulting in scandium oxide products with a purity of over 99.99%.

The present application relates to white cement admixture technical field, specifically to a kind of composite liquid early strength agent of white Portland cement, including the following weight parts of raw material, reinforcing component 30~40 parts, auxiliary solubilization stabilizing component 5~10 parts and carrier 50~65 parts, the total part of the composite liquid early strength agent is 100 parts, the reinforcing component is organic salt, inorganic salt reinforcing agent, the organic salt, inorganic salt reinforcing agent includes sodium oxalate, sodium carbonate and magnesium fluorosilicate, the auxiliary solubilization stabilizing component is the mixture of lignosulfonate and polyglycerol, the lignosulfonate is sodium lignosulfonate, and the polyglycerol is triglycerol, the composite liquid admixture of the present application, environmental friendly, preparation process is simple, improve white cement early (3d) strength 10%~15%, save white cement product curing time and improve formwork turnover rate.

The invention relates to the technical field of batteries, in particular to a battery monomer, a preparation method of a secondary battery, an electrolyte and an electric device. Each single battery comprises a positive pole piece, a negative pole piece and an electrolyte, at least partial structures of the positive pole piece and the negative pole piece are located in the electrolyte, the electrolyte comprises a metal ion complexing agent, and the metal ion complexing agent comprises an organic complexing agent and / or an inorganic complexing agent; the organic complexing agent comprises at least one of phenanthroline, a crown ether compound, oxalic acid, citric acid, tartaric acid, ethylenediamine tetraacetic acid and deferoxamine; and / or the inorganic complexing agent comprises at least one of sodium oxalate, sodium citrate, sodium tartrate and sodium ethylene diamine tetracetate. The metal ion complexing agent in the electrolyte can be combined with impurity metal ions in the electrolyte to form a stable complex, so that the risk that the impurity metal ions are separated out into dendritic metal foreign matters at an anode to pierce a diaphragm to cause self-discharge of the battery is reduced.

This application provides a method for preparing high-whiteness aluminum hydroxide based on oxalate filter cake, belonging to the field of aluminum hydroxide preparation. The method includes: adding sodium oxalate circulating seed to the Bayer process seeding mother liquor to obtain an oxalate filter cake containing aluminum hydroxide; adding sodium carbonate to the oxalate filter cake to adjust the alkali ratio to 0.85–1.15, and adding lime to the oxalate filter cake to obtain a mixture; sintering the mixture to obtain sintered clinker; dissolving the sintered clinker to obtain a sodium aluminate solution; and seeding the sodium aluminate solution to obtain high-whiteness aluminum hydroxide. This application, through precise coupling of process parameters and a full-process design of the impurity control chain, simultaneously achieves deep removal of key impurities such as Fe and Si during the oxalate removal process, transforming the oxalate filter cake from waste into a high-quality raw material for high-whiteness aluminum hydroxide, thus combining the removal of organic matter from oxalate and the preparation of high-whiteness aluminum hydroxide in the Bayer process alumina production.

This invention discloses a method for determining the permanganate index based on modified biochar adsorbents, comprising the following steps: Step 1, modifying the biochar with a modifying solution. When the concentration of the modifying solution is 0.1 mol / L, an acidic modifier is used to modify the biochar adsorbent; when the concentration of the modifier solution is 0.2~0.4 mol / L, a salt modifier is used. Step 2, thoroughly shaking and mixing the modified biochar adsorbent with a water sample, adding sulfuric acid solution to acidify the water sample, adding potassium permanganate solution to the acidified water sample and heating the reaction, adding sodium oxalate solution after heating, shaking until the solution becomes colorless and without precipitate, titrating with potassium permanganate solution while hot until a light pink color appears and does not fade within a fixed time, recording the volume of potassium permanganate solution consumed, and calculating the potassium permanganate index. The type and concentration of the modifier used in this invention have a significant impact on the adsorption performance of biochar.

An integrated energy system including a power plant is discussed herein. In some examples, the integrated energy system may include at least one nuclear reactor and electrical power generation system configured to generate steam and electricity, a water treatment plant configured to produce Sodium Hydroxide (NaOH) from salt water, a Sodium Formate (HCOONa) production plant configured to receive the Sodium Hydroxide (NaOH) to produce Sodium Formate (HCOONa), a Thermal Decomposition reactor configured to receive the Sodium Formate (HCOONa) and configured to receive at least a first portion of the steam or at least a second portion of the electricity from the power plant to indirectly heat the Thermal Decomposition reactor to produce Hydrogen (H2), Carbon Dioxide (CO2), and Carbon Monoxide (CO) from the Sodium Formate (HCOONa), and a Methanol (CH3OH) reaction chamber configured to receive the Hydrogen (H2), the Carbon Dioxide (CO2), and the Carbon Monoxide (CO) to produce Methanol (CH3OH).

The invention belongs to the technical field of hybrid capacitors, and particularly relates to a sodium supplementing material for a sodium ion hybrid capacitor and a preparation method of the sodium supplementing material. The preparation method comprises the following steps: adding absolute ethyl alcohol into an aqueous solution of sodium oxalate, fully mixing, adding Super P, and carrying out spray drying on a solution in which the Super P is fully dispersed to obtain the sodium supplementing material for the sodium ion hybrid capacitor. Through an innovative preparation process, the size structure of sodium oxalate particles is successfully reduced, and the sodium oxalate particles are uniformly compounded with the Super P carbon material, so that the conductivity of the sodium oxalate is greatly improved, the decomposition voltage of the sodium oxalate is reduced, and meanwhile, the utilization rate is improved. When the composite material is applied to a sodium ion hybrid capacitor, consumption of sodium ions in an electrolyte in the SEI film forming process can be effectively supplemented, and the electrochemical performance of the capacitor is improved.

The invention relates to the technical field of sodium battery materials, in particular to a sodium supplementing coating based on a spiral iron-carbon-based composite material and a preparation method thereof.A spiral polypyrrole template is synthesized through a chiral template method, and a Fe3C-CNS spiral carbon composite material rich in Fe3C nanocrystals and iron monatomic sites is prepared through iron loading, vulcanization and high-temperature pyrolysis. The preparation method comprises the following steps: preparing a Na2C2O4-coated Fe3C-coated CNS composite material, loading sodium oxalate on the surface and in pore channels of the Na2C2O4-coated Fe3C-coated CNS composite material in a high-dispersion manner through a recrystallization method to prepare the Na2C2O4-coated Fe3C-coated CNS composite material, finally mixing the Na2C2O4-coated Fe3C-coated CNS composite material with a conductive agent and a By adopting the sodium supplementing coating based on the spiral iron-carbon-based composite material and the preparation method of the sodium supplementing coating, the problems of irreversible sodium loss in the first week and poor interface stability of an existing sodium ion battery are solved, efficient pre-sodium treatment and interface cooperative regulation and control are realized, and the comprehensive performance of the battery is improved.

The invention relates to the technical field of air purifying agents, in particular to a TiO2-containing air purifying agent and a preparation method thereof. The preparation method of the TiO2-containing air purifying agent comprises the following steps: uniformly mixing a titanium source, acetylacetone and polyethylene glycol, heating and stirring to obtain a titanium dioxide colloid; uniformly stirring cobalt nitrate hexahydrate and water, adding sodium oxalate and ammonia water, and stirring to obtain a solution; carrying out hydrothermal reaction, centrifugation, washing, drying and high-temperature calcination to obtain a cobalt oxide material; mixing the titanium dioxide colloid, the cobalt oxide material, a silane coupling agent and a cross-linking agent, and heating and stirring for reaction to obtain the TiO2-containing air purifying agent. The TiO2-containing air purifying agent prepared by the preparation method disclosed by the invention has a very good purifying effect on formaldehyde, methylbenzene and volatile organic compounds, and meanwhile, the purifying durability is relatively good.