27 results about "Suboxide" patented technology

The invention discloses an endogenous Joule heat catalyst for methane dry reforming and a preparation method and application thereof, the endogenous Joule heat catalyst comprises a titanium black carrier and an active metal loaded on the titanium black carrier, the titanium black carrier is selected from at least one of Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 and Ti9O17, and the active metal is selected from at least one of Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 and Ti9O17. The active metal is at least one of nickel, cobalt, rhodium, ruthenium, palladium, platinum and iridium, and the endogenous Joule heat catalyst has an electro-thermal characteristic. Titanium oxide is used as a carrier, a conductive TiO layer exists in crystal lattices of the titanium oxide and has conductivity, CO2 can be directly activated by the conductive TiO layer containing a large number of oxygen vacancies, CH4 can be efficiently activated by the loaded active metal, the titanium oxide and the loaded active metal jointly form a bifunctional catalytic activity system, and the catalyst can be self-heated through endogenous Joule heat due to the electro-thermal characteristic; energy loss caused by indirect heat transfer of an electrothermal material in the prior art is avoided, current can directly flow through the catalyst, and the reaction performance is effectively improved by coupling the endogenous Joule heating effect and the electronic effect.

The invention relates to a full-quantitative recovery method of high-chlorine zinc hypoxide, and belongs to the technical field of comprehensive utilization of secondary complex zinc resources. The high-chlorine zinc hypoxide and leaching residues containing silver and zinc are mixed and then are subjected to pyrogenic process smelting, the heat value of the high-chlorine zinc hypoxide is fully utilized, the volatilization energy consumption of valuable metals such as zinc, silver and lead is remarkably reduced, and the recovery rate of the high-chlorine zinc hypoxide is improved. And high-efficiency recovery of valuable metals is realized. After smelting smoke dust obtained after smelting is subjected to water leaching, acid leaching, acidification lead precipitation, neutralization zinc precipitation and concentration crystallization treatment, efficient separation of zinc and chlorine is achieved while lead, zinc and silver are recovered, the chlorine content in zinc enrichment liquid is greatly reduced, and the adverse effect of chlorine on zinc recovery is eliminated; meanwhile, chlorine in the high-chlorine zinc hypoxide is recycled as a calcium chloride product, so that the method has the advantages of low energy consumption, cleanness, high efficiency, no secondary hazardous waste and the like.

The invention relates to the field of plasma thermal spraying and thermal spraying powder and wires, and provides a process for spraying titanium black to the surface of titanium metal through a plasma thermal spraying method. Titanium black powder is selected as a spraying material; atmospheric plasma spraying equipment is adopted for spraying, and the technological parameters are as follows: the power of a spray gun is 30-80 kW, and the spraying distance is 80-150 mm; the working gas comprises main gas and secondary gas, the main gas is argon or nitrogen, and the secondary gas is hydrogen or helium; post-treatment is conducted on a coating obtained through spraying, specifically, heat treatment is conducted at the temperature of 400-600 DEG C under the argon protective atmosphere, and heat preservation is conducted for 1-4 hours. Titanium black is sprayed to the surface of titanium metal through a plasma thermal spraying method, and titanium metal surface modification with high bonding strength, high hardness, high wear resistance and high chemical stability is achieved.

The application discloses a preparation and application of an iron-doped titanium suboxide electrode. The iron-doped titanium suboxide electrode is prepared by mechanically treating an iron compound and titanium suboxide, is used as an anode, and is used for synthesizing a disinfectant with natural seawater as an electrolyte and being coupled with photovoltaic technology, so that a solar energy driven electrolysis device is successfully constructed, the disinfectant with active components of hypochlorous acid is synthesized, and pathogenic bacteria in ballast water are killed. The electrode is composed of non-noble metal elements, and the price is much lower than that of a commercial size stable anode composed of noble metals ruthenium and iridium, and the electrode shows a reaction activity which is significantly higher than that of the commercial size stable anode, and the problem that high-abundance chlorine ions in seawater are difficult to be selectively oxidized to hypochlorous acid is solved. The electrode is stable in chemical properties, friendly to the environment, and cannot cause secondary pollution, and can be driven by solar energy to electrochemically synthesize a disinfectant without depending on power resources in ocean navigation, so that disinfection and sterilization of ship ballast water are realized, and the electrode is very worth promoting.

This invention belongs to the field of thermodynamics and phase equilibrium measurement technology of metallurgical slag, and discloses a high-temperature phase equilibrium determination method for vacuum-sealed slag systems containing low-valent titanium oxides. The raw materials are roasted or dried; they are placed in a high-temperature resistant container according to a preset composition ratio, placed inside a quartz tube, and a deoxidizer is added; after vacuum preheating, argon gas washing, and adjustment of the vacuum level inside the tube, the slag is high-temperature sealed to form a thermodynamically closed system; the slag sample is held at the experimental temperature until it reaches thermodynamic equilibrium, and after the holding period, it is rapidly quenched to preserve the high-temperature phase structure; finally, the phase equilibrium is determined through characterization. This invention uses a closed system to effectively isolate external gas interference, and relies on the slag sample's own redox equilibrium to autonomously establish and maintain the ultra-low oxygen potential required for the stable existence of low-valent titanium oxides. This solves the technical problem that traditional atmosphere-controlled oxygen methods cannot meet the phase equilibrium determination of slag systems containing low-valent titanium oxides, and achieves accurate and reliable determination of the phase diagram of slag systems containing low-valent titanium oxides at steelmaking temperatures.

This invention relates to the field of wastewater treatment technology and discloses a composite catalytic electrode based on titanium suboxide and its preparation method. The composite catalytic electrode consists of a titanium plate substrate, a conductive titanium suboxide transition layer, and a BDD catalytic layer grown under core-shell seed conditions. Its preparation method comprises five steps: titanium plate substrate pretreatment, preparation of the conductive titanium suboxide transition layer, surface composite modification, construction of the core-shell seed layer, and low-temperature CatCVD deposition. This invention solves the problems of high interfacial stress, insufficient bonding strength, high-temperature oxidation, and difficulty in bonding between the titanium substrate and BDD in existing BDD-based electrodes. The electrode interfacial bonding strength is ≥6.0 MPa, the BDD crystallinity is ≥88%, and in the treatment of high-concentration, recalcitrant organic wastewater with COD ≥1000 mg / L, the COD removal rate is ≥98.0%, with excellent cycle stability, demonstrating significant practical application value.

The invention relates to a high-temperature self-stabilization ferroelectric domain wall memory based on bismuth oxide (BFO) and a preparation method thereof, a memory function layer is formed by sequentially depositing an STO buffer layer with the thickness of 5 nm, a BFO film with the thickness of 100 nm and a planar Pt electrode pair on a strontium titanate (STO) substrate in the [001] direction, the STO substrate is obliquely cut by 0.2 degree in the [100] direction, the BFO film is of a stripe domain structure, and the electrode gap is not smaller than 500 nm. Through the limiting effect of a beveled substrate step, the BFO ferroelectric film only forms two polarization orientations, a periodic stripe domain structure is obtained, the polarization overturning controllability is improved, the electrode is prepared by adopting an electron beam photoetching and ion etching combined process, the electric domain overturning is ensured to penetrate through the film thickness, and the performance of the BFO ferroelectric film is improved. After 105 times of voltage pulse cycles at a high temperature of 135 DEG C, the device still keeps a rectification ratio greater than or equal to 25: 1, the turnover polarization retentivity is high, and the domain wall current attenuation rate is small. The bottleneck that a traditional FeRAM fails in a high-temperature environment is broken through, the storage density potential is larger than 1 Gb, and the FeRAM has the effect of being suitable for high-temperature application scenes such as aerospace, vehicle-mounted electronics and geothermal exploration.

A glass-ceramic includes glass and crystalline phases, where the crystalline phase includes non-stoichiometric suboxides of titanium, forming ‘bronze’-type solid state defect structures in which vacancies are occupied with dopant cations.

The invention discloses a titanium black electrode material for removing COD (Chemical Oxygen Demand) and a preparation method of the titanium black electrode material. The electrode material is composed of titanium black, tin dioxide, iridium oxide, ruthenium oxide, carbon nanotubes, a binder and a pore-forming agent in specific parts by weight. The preparation method comprises the following steps: ball-milling and mixing the raw materials, forming slurry with absolute ethyl alcohol, coating a titanium mesh substrate with the slurry, carrying out cold press molding, and then sequentially carrying out segmented sintering and acid liquid surface activation. Through the synergistic effect of multiple active components and conductive components, the catalytic activity and the current efficiency of the electrode are remarkably improved, and the service life of the electrode is remarkably prolonged. The electrode is particularly suitable for treating high-salt and high-chloride-ion nanofiltration concentrated water, under the conditions that COD is 700 mg / L and chloride ions are 13,000 mg / L, the COD removal rate can be 85% or above, the average current efficiency is 37-40%, the accelerated life test exceeds 1000 hours, the technical problems that an existing electrode is low in catalytic efficiency and poor in stability in the high-salt environment are solved, and technical support is provided for stable operation of a zero-emission system.

A method for separating indium oxide and tin oxide from an ITO waste target by a vacuum method disclosed by the present disclosure, which relate to the field of resource recycling and utilization technology. The method Includes: take ITO waste target raw material, add indium to the ITO waste target raw material, heat and hold under vacuum conditions, then the Indium oxide is obtained by the volatilization of the suboxide of indium into the volatile, and the tin oxide is obtained by remaining of the tin oxide in the condensate. The present disclosure is based on the fact that indium oxide can generate volatile suboxide (In2O) when heated in indium melt, and the generated suboxide can evaporate to the condensation zone for condensation, thereby achieving the separation of indium oxide and tin oxide and achieving resource recovery and utilization of ITO waste target materials.

This invention discloses a pre-magnesium silicon suboxide anode material and its preparation method. The method involves mixing silicon suboxide powder, halide molten salt, and a magnesium source in a specific ratio, followed by heat treatment under a slightly positive pressure inert atmosphere. The acid washing process is precisely controlled to obtain a pre-magnesium silicon suboxide anode material with Mg₂SiO₄ as the absolute main phase. This method uses a molten salt with a lower melting point and addresses the issues of excessively high pre-magnesium temperatures and molten salt volatilization under vacuum conditions, resulting in a novel anode material that exhibits superior electrochemical performance.

A glass-ceramic includes glass and crystalline phases, where the crystalline phase includes non-stoichiometric suboxides of titanium, forming ‘bronze’-type solid state defect structures in which vacancies are occupied with dopant cations.

This invention belongs to the field of environmental engineering technology, and provides a method for preparing a phosphorus-doped, high-curvature-controlled porous titanium suboxide electrode and its application in electrochemically enhancing the deep reduction of resistance genes in pharmaceutical wastewater. A high-curvature-tipped nanotube structure is prepared by electrochemical etching with NH4F. The increased electrochemically active surface area and the tip-enhanced electric field effect synergistically promote charge enrichment and electron accumulation, significantly improving the average current density of the system. P doping further optimizes the surface curvature of titanium suboxide, and lattice expansion is induced by controlling lattice tensile strain, reducing Ti orbital overlap to narrow the d-band and shift its energy level upward. The Ti content in the doped material... 3+ The ratio and oxygen vacancies increased significantly, enhancing the · The ability to generate OH, and increased 1 By leveraging the O2 generation rate and the characteristics of both free radicals, this invention achieves highly efficient and low-consumption electrocatalytic degradation of resistance genes and antibiotics in pharmaceutical wastewater. The electrode preparation process of this invention is simple, and the raw materials are inexpensive and readily available, making it suitable for large-scale production.

The invention discloses a preparation method of a titanium black electrode, and belongs to the technical field of titanium electrode materials. The method comprises the following steps: a, mixing titanium black powder, a binder and a solvent to prepare slurry; the binder is selected from at least one of stannous chloride, antimony chloride, cobalt chloride and butyl titanate; and b, coating the slurry on the surface of a titanium substrate, and sintering in a muffle furnace to obtain the titanium black electrode. The process for preparing the titanium black electrode is simple and low in cost, and the prepared titanium black electrode has good electrochemical stability, excellent electrocatalytic activity and high oxygen evolution potential and can be widely applied to the electrochemical fields of water treatment, metallurgy and the like.

Stabilized precursor solutions can be used to form radiation inorganic coating materials. The precursor solutions generally comprise metal suboxide cations, peroxide-based ligands and polyatomic anions. Design of the precursor solutions can be performed to achieve a high level of stability of the precursor solutions. The resulting coating materials can be designed for patterning with a selected radiation, such as ultraviolet light, x-ray radiation or electron beam radiation. The radiation patterned coating material can have a high contrast with respect to material properties, such that development of a latent image can be successful to form lines with very low line-width roughness and adjacent structures with a very small pitch.

The application belongs to the field of preparation of conductive titanium functional materials, and provides a method for preparing titanium suboxide from titanium white intermediate product prepared by sulfuric acid method, wherein the titanium white intermediate product comprises TiO2·0.06SO3·5H2O, and the method comprises the following steps: performing dehydration and desulfurization treatment on the titanium white intermediate product; grinding the titanium white intermediate product after the dehydration and desulfurization treatment into a solid powder; and reducing the solid powder by using a reducing agent to obtain titanium suboxide. The method uses high-purity intermediate product in the production process of titanium white prepared by sulfuric acid method as raw material, uses hydrogen gas or mixed gas of hydrogen and argon and carbon powder as reducing agent, and prepares titanium suboxide, especially high-purity Ti4O7, through high-temperature reduction reaction.

This invention provides a method for preparing a magnesium-doped silicon suboxide composite anode material. The method involves pre-magnesifying, silica sol-coating, and etching fine silicon suboxide powder generated during air jet milling to obtain a magnesium-doped silicon suboxide composite anode material with voids between the inner and outer layers. This anode material exhibits multi-level volume buffering properties, effectively mitigating volume expansion during silicon suboxide charging and discharging. The preparation process is simple, production cost is low, and it demonstrates good electrical performance and stability.

The application provides a non-stick material and a preparation method thereof, a non-stick coating and a non-stick cooker. The non-stick material comprises mixed particles of a multi-metal cation titanate and an auxiliary material, wherein the auxiliary material is magnetite and titanium suboxide or titanium suboxide, the mixed particles have an amorphous structure, and the weight percentage of the multi-metal cation titanate is 80-90%, the weight percentage of the magnetite is 0-10%, and the weight percentage of the titanium suboxide is 10-20% based on 100% of the total weight of the mixed particles. The non-stick material can ensure that the cooker has excellent initial non-stickness, persistent non-stickness, hardness and anti-impact properties.

The invention discloses a carbon-coated pre-magnesium silicon monoxide negative electrode material and a preparation method thereof, the negative electrode material comprises a silicon core, a silicon-magnesium composite porous layer and a carbon-coated layer, the silicon-magnesium composite porous layer comprises MgSiO3 and Mg2SiO4 with porous characteristics, and the porosity is not less than 30%; the material shows a unique peak position and intensity relationship in an XRD diffraction pattern, and Mg2SiO4 is used as a main phase. According to the preparation method, through molten salt mediated low-temperature solid-phase reaction and addition of reducing gas during heat treatment, energy consumption is greatly reduced, a generated Mg2SiO4 crystal structure is more stable than traditional MgSiO3, and a porous structure (porosity is larger than 30%) formed through the cooperation reaction enables the material to maintain high capacity of 1621.49 mAh / g, meanwhile, the first efficiency is improved to 85.91%, and the cyclic expansion rate is reduced by 40% or above.

The acid etching method for increasing the specific surface area of ​​titanium suboxide and doped titanium suboxide powder described in this invention has two technical solutions. The first solution uses low specific surface area titanium suboxide powder or low specific surface area doped titanium suboxide powder and an aqueous solution of HCl and H2O as raw materials. 2 SO 4 Aqueous solution, HNO 3 The first method involves mixing at least one of the above-mentioned raw materials in an aqueous solution to form a liquid. This liquid is then poured into a reaction vessel and placed in a heating furnace. The temperature is raised to 130–150°C for a hydrothermal reaction. The reaction product is then washed successively with deionized water and anhydrous ethanol by centrifugation to remove acidic substances, followed by drying. The second method uses low specific surface area sub-titanium oxide powder or low specific surface area doped sub-titanium oxide powder and an aqueous HF solution or an HF-ethanol solution. The low specific surface area sub-titanium oxide powder or low specific surface area doped sub-titanium oxide powder is added to the aforementioned HF solution and stirred at room temperature for 15–24 hours to obtain a reaction product. The reaction product is then washed successively with deionized water and anhydrous ethanol by centrifugation to remove HF, followed by drying.

The application provides a method for preparing high-purity zinc compounds by using secondary zinc oxide, and belongs to the technical field of metal smelting. The method comprises the following steps: taking secondary zinc oxide as raw material, preparing a crude zinc sulfate solution through pre-washing and sulfuric acid leaching, removing fluorine ions by using an aluminum-based composite fluorine removal agent, and regenerating the fluorine removal residue containing aluminum-fluorine complexes by using ammonia water, so that the fluorine is transferred into a liquid phase and the aluminum is restored into an active phase of aluminum hydroxide; the regenerated wet filter residue is directly returned to the fluorine removal process for recycling; the regenerated liquid is added with a calcium source to generate calcium fluoride and recover ammonia; meanwhile, low-fluorine solution is subjected to calcium removal by using ammonium carbonate, and then is subjected to electrodialysis dechlorination; after purification, alkali zinc carbonate is precipitated by using ammonium bicarbonate; the mother liquor is stabilized by using ammonium phosphate to stabilize residual calcium, fluorine and heavy metals, and is then resourceized into an ammonium sulfate byproduct; and high-purity zinc oxide powder is obtained by washing, drying and thermal decomposition of the alkali zinc carbonate, and can be used in the fields of piezoresistors, external antibacterial preparations and ceramic glazes.

The invention belongs to the technical field of lithium ion battery negative electrode materials, and particularly discloses a silicon-oxygen negative electrode material and a preparation method and application thereof.The preparation method comprises the steps that under the inert atmosphere, silicon powder and silicon dioxide powder are mixed and then subjected to high-temperature sintering, cooling and grinding are conducted, and silicon monoxide is obtained; and in an inert atmosphere, mechanically activating the silicon monoxide and the oxide semiconductor material powder, adding a carbon source, mixing to obtain a silicon-oxygen negative electrode precursor, and carrying out secondary sintering and natural cooling on the silicon-oxygen negative electrode precursor to obtain the silicon-oxygen negative electrode material. The particle size of the silicon-oxygen negative electrode material can be effectively controlled, the pulverization and expansion of the silicon-oxygen negative electrode material can be inhibited by the coated oxide semiconductor material, and meanwhile, the conductivity and the first coulombic efficiency of the silicon-oxygen negative electrode material are improved; the silicon monoxide with different Si and O molar ratios can be produced according to requirements, so that the silicon-oxygen negative electrode materials with different properties are obtained and applied to different scenes; the preparation method is simple, controllable and relatively low in cost, and the obtained silicon-oxygen negative electrode material is excellent in performance and has a wide application prospect.

This invention discloses a nickel-tantalum master alloy, comprising, by mass percentage: 40.0%–50.0% nickel, with the balance being tantalum and unavoidable impurities. The nickel-tantalum master alloy is prepared from nickel foil, nickel suboxide, tantalum pentoxide, aluminum powder, and calcium granules. The specific preparation method is as follows: nickel suboxide, tantalum pentoxide, and aluminum powder are mixed uniformly to obtain a mixture; calcium granules are spread evenly at the bottom of a crucible in a vacuum aluminothermic reaction furnace, and a layer of calcium oxide slurry is coated onto the inner wall of the crucible. After drying, the mixture is added to perform a vacuum aluminothermic / calcothermic reduction reaction to obtain a nickel-tantalum alloy liquid. After cooling, a primary nickel-tantalum alloy is obtained; tantalum pentoxide is wrapped in nickel foil to form multiple bales; the primary nickel-tantalum alloy is crushed, and the wrapped bales and crushed primary nickel-tantalum alloy are melted in a vacuum electron beam furnace; the melted alloy liquid is cooled to obtain the nickel-tantalum master alloy. The nickel-tantalum master alloy obtained by this invention has high uniformity and high purity.

The invention provides a method for efficiently enriching indium in indium-containing zinc hypoxide smoke dust, and relates to the technical field of hydrometallurgy. The method comprises the following steps: neutral leaching: mixing indium-containing zinc hypoxide smoke dust with a first acid solution, and carrying out neutral leaching to obtain neutral leaching residues and a neutral leaching solution; low-acid leaching is conducted, specifically, the neutral leaching residues are subjected to low-acid leaching, and low-acid leaching residues and low-acid leaching liquid are obtained; arsenic removal and indium precipitation: mixing the low-acid leaching solution with an impurity removal agent for impurity removal to obtain an indium-containing solution; then adding a neutralizing precipitator into the indium-containing solution to precipitate indium, so as to obtain indium-rich slag and indium-precipitated liquid; high-acid leaching is conducted, specifically, the low-acid leaching residues are mixed with a second acid solution, high-acid leaching is conducted, and lead-silver residues and high-acid leaching liquid are obtained; the high-acid leaching liquid is returned to be used for low-acid leaching. According to the method, efficient dissolution and selective enrichment of indium are achieved, meanwhile, through the arsenic removal and indium precipitation step, the content of arsenic in the solution is reduced, and the generation risk of arsenic hydride in follow-up treatment is avoided.

This invention provides a method and application for synthesizing high-performance silicon suboxide composite materials from natural silicon minerals. The method includes: mixing natural silicon mineral powder and silicon powder in a certain proportion, reacting them fully under vacuum and high temperature to generate a first precursor; then mixing with a lithium source and sintering in an oxygen-free environment to obtain a second precursor; further modifying the precursor to obtain a third precursor; and performing negative pressure chemical vapor deposition carbon coating in a mixed atmosphere of organic carbon source and inert atmosphere to obtain the high-performance silicon suboxide composite material. The silicon suboxide composite material is a complex of silicon suboxide, lithium silicate, silicon, and carbon, and can be used as a negative electrode material in electrode material preparation. This invention successfully synthesizes a high-performance silicon suboxide composite pre-lithiation material, effectively improving the cycle stability and first coulombic efficiency of silicon suboxide as a negative electrode; the coating layer is dense, the technical operation is simple, the raw material cost is low, the preparation process is simple, suitable for large-scale mass production applications, and has commercial prospects.

Provided is a negative electrode active material having negative electrode active material particles, the negative electrode active material being characterized in that the negative electrode active material particles comprise a porous carbon structure, an amorphous low-valence nano-silicon oxide is dispersed in the porous carbon structure, the low-valence nano-silicon oxide contains various states of SiOx, and the low-valence nano-silicon oxide is a porous carbon structure. Wherein x is less than 1.0, and the average particle size of the low-valence nanometer silicon oxide, which is obtained by performing image processing on the low-valence nanometer silicon oxide by using a cross-section TEM image, is 50 nm or less. As a result, it is possible to provide a negative electrode active material capable of increasing capacity while maintaining battery characteristics.

This invention discloses a cobalt-iron bimetallic co-doped titanium suboxide electrode, comprising: a titanium substrate and an active coating loaded on the surface of the titanium substrate, wherein the active coating comprises iron and cobalt co-doped titanium suboxide. The preparation method of the cobalt-iron bimetallic co-doped titanium suboxide electrode includes the following steps: (1) dissolving a titanium source, an iron source, a cobalt source, and acetylacetone in an alcohol solvent to form a sol; (2) coating the sol obtained in step (1) onto the surface of the titanium substrate, and forming a precursor wet film after gelation; (3) subjecting the titanium substrate coated with the precursor wet film to a programmed heat treatment under a reducing atmosphere to obtain the titanium suboxide electrode. The titanium suboxide electrode obtained by this invention exhibits excellent electrocatalytic performance, demonstrating near-complete removal capacity and high mineralization rate for perfluorinated compounds.