53 results about "Titanic acid" patented technology

The invention provides an anion-doped perovskite type titanate material and a preparation method and application thereof, the structural formula of the anion-doped perovskite type titanate material is AxByTiOzN1-z, A is an alkali metal element, B is a rare earth element, N is an anion element, 0 lt; x is less than or equal to 1, 0lt; y < = 1, 0lt; z < = 4. The prepared anion-doped perovskite type titanate material is applied to a negative electrode of a lithium ion battery, and compared with a traditional perovskite type titanate material, the anion-doped perovskite type titanate material has better fast charging performance and power characteristics, ultra-long cycle life and excellent safety.

At least one embodiment of the invention provides a preparation method of sponge titanium, which comprises the following steps: pretreating bauxite tailings to obtain a first mixture; carrying out acid treatment on the first mixture, and filtering to obtain a second mixture; putting the second mixture into a reaction kettle containing an alkaline substance to react so as to convert the ferric titanate into titanate and ferric oxide or ferrous hydroxide to obtain a third mixture; carrying out suction filtration treatment on the third mixture to obtain a first solid phase and a first liquid phase, and drying and grinding the first solid phase; roasting the dried and ground first solid phase to form an iron elementary substance, and carrying out magnetic separation to remove the iron elementary substance; adding an acidic material into the first liquid phase for reaction to obtain metatitanic acid colloid, and washing the metatitanic acid colloid; the metatitanic acid colloid is subjected to calcination, chlorination reaction and replacement reaction in sequence to obtain the sponge titanium. The sponge titanium obtained through the preparation method is high in purity.

The invention relates to a lasting antibacterial photocatalyst particle and a preparation method thereof, and the preparation raw materials of the lasting antibacterial photocatalyst particle comprise the following components in parts by weight: 10-15 parts of butyl titanate, 5-10 parts of tetraethoxysilane, 1-2 parts of a rare earth compound, 8-15 parts of a silane coupling agent, 250-280 parts of absolute ethyl alcohol, 5-10 parts of industrial hydrochloric acid and 5-10 parts of deionized water. According to the photocatalyst particles, titanium dioxide serves as a core body, silicon dioxide serves as a shell layer, the silicon dioxide shell layer is of a mesoporous structure, and rare earth elements are distributed between the titanium dioxide core body and the silicon dioxide shell layer. Through the synergism of the titanium dioxide core, the porous silicon dioxide shell and the rare earth elements distributed between the core and the shell, the photocatalyst particles have the excellent effects of lasting and efficient antibacterial property and high stability.

The present application relates to the chemical industry, in particular to a kind of sulphuric acid method titanium white before kiln squeezing water recycling method and sulphuric acid method titanium white production process.The present application collects and recycles before kiln squeezing water in sulphuric acid method titanium white process, specifically recycling to bleaching and two washing procedures respectively, by the above-mentioned recycling, the collected before kiln squeezing water can be recycled completely, save bleaching pulp water while the percolation metatitanic acid is recycled to the flow, because the pulp after bleaching is washed by two washing, the soluble salt carried in before kiln squeezing water can be washed, so it will not affect subsequent salt treatment and calcination.In addition, by the recycling method of the present application, 1.5-2.0 t of water can be saved per ton of titanium dioxide, according to this calculation, 150-200 thousand tons of water can be saved in a 100,000-ton-per-year titanium dioxide production line, greatly saving the cost.

The invention discloses a method for growing titanic acid / titanium dioxide nanoparticles on a titanium carbide Mxene sheet layer, and relates to a method for growing titanic acid / titanium dioxide nanoparticles on the surface of a titanium carbide Mxene sheet layer structure. The method comprises the following steps: firstly, etching titanium aluminum carbide at room temperature by adopting hydrofluoric acid to obtain a layered titanium carbide Mxene material, then dispersing the layered titanium carbide Mxene material in hydrogen peroxide with the mass percent concentration of 20-30%, simultaneously adding 0.6 ml of 65% nitric acid, and reacting for 24-72 hours at the temperature of 20-80 DEG C, so that titanic acid nanoparticles can grow on the surface of a titanium carbide Mxene lamellar structure; and subsequently carrying out heat treatment in an air atmosphere at 200-500 DEG C, and converting the titanic acid into anatase titanium dioxide. The preparation temperature is low without high pressure; the nanoparticles keep a lamellar structure aggregation state, and are expected to be applied to the fields of adsorption, photocatalysis and the like.

This application belongs to the field of inorganic chemical waste recycling and fluoride preparation technology, specifically relating to a method for preparing potassium fluorotitanate from hydrofluoric acid waste liquid. The method includes: S1. Pretreatment of hydrofluoric acid waste liquid and titanic acid powder; S2. Adding the pretreated hydrofluoric acid waste liquid and titanic acid powder to a reaction vessel to generate a fluorotitanic acid solution; S3. Adding potassium carbonate to the fluorotitanic acid solution to generate potassium fluorotitanate, followed by purification of the reaction solution to obtain potassium fluorotitanate crystals; S4. Washing and drying the potassium fluorotitanate crystals to obtain a high-purity potassium fluorotitanate product. This application uses titanic acid powder as the titanium source and optimizes reaction parameters to achieve the dual goals of resource recovery from hydrofluoric acid waste liquid and low-cost preparation of high-purity potassium fluorotitanate.

The application belongs to the technical field of biomedical materials, and relates to an ultrasonic-induced inorganic afterglow luminescent material for promoting repair of tissue and organ defects as well as a preparation method and application thereof, and comprises the following steps: S1, dispersing an afterglow luminescent material and citric acid in an aqueous solution to obtain a precursor solution for hydrothermal reaction; and S2, adding a titanium oxide-based material to the precursor solution provided in S1 to perform hydrothermal reaction in a reaction kettle to obtain a titanium oxide-based luminescent material loaded with the afterglow material; wherein the afterglow material is one or more of an aluminate-based afterglow luminescent material and a titanate afterglow luminescent material. Compared with the prior art, the ultrasonic-induced inorganic afterglow luminescent material prepared in the application is composed of titanium oxide and the afterglow material, and can produce afterglow luminescence under ultrasonic excitation. By loading microalgae with photosynthesis, oxygen supply to an oxygen-deficient bone defect site is controlled by ultrasonic waves, blood vessel regeneration is promoted, and efficient repair of the bone defect is realized.

The application discloses a preparation method of a titanium dioxide coated MIL-53(Fe) electrocatalyst. First, a catalyst MIL-53(Fe) is obtained through a hydrothermal method, then the catalyst is heated, stirred and dried under mild conditions, and titanium dioxide obtained by hydrolysis of tetra-n-butyl titanate is uniformly coated on the MIL-53(Fe) under the action of dodecyl sulfate, finally, the catalyst is improved in contact with nitrogen through heat treatment, so that the titanium dioxide coated MIL-53(Fe) with good stability is prepared.

The application discloses a preparation method of battery-grade nanometer titanium dioxide, which comprises the following steps: dissolving a strong alkali weak acid salt as a pH regulator into ice water to make titanium salt completely hydrolyzed to prepare titanic acid; and using sodium hydroxide as the pH regulator to make the titanic acid further converted into a crystalline precursor to prepare a titanium complex [Ti(OH)4(OH)2] 0 Then, the complex is sheared and dispersed, and then subjected to a hydrothermal reaction; after the reaction is completed, the product is completely washed with water and calcined to prepare nanometer titanium dioxide. The prepared nanometer titanium dioxide has super-low impurity content, small particle size and uniform particle size distribution; the total content of magnetic substances, including Cr, Fe, Ni and Zn, is less than 0.2 ppm; the particle size is 0-100 nm; and the average particle size is 50 nm, so that the nanometer titanium dioxide is an excellent material for battery doping.

The invention discloses a preparation method of hydrolyzed metatitanic acid with narrow particle size distribution and a high-whiteness rutile crude product, and belongs to the technical field of sulfuric acid process titanium dioxide production. By prolonging the first boiling time, canceling gray point observation, performing staged speed regulation stirring and optimizing the pressure maintaining and curing process, hydrolysis process parameters are optimized, and a staged calcination system adaptive to the characteristics of the hydrolysate is designed, so that the particle sizes of the hydrolysate are concentrated, the content of fine particles is low, and a titanium dioxide product with narrow particle size distribution, high whiteness, low yellowness and stable quality is finally obtained. The problems of wide particle size distribution, serious fine particle loss, large product quality fluctuation, over-burning / under-burning caused by mismatching of a hydrolysate and a calcination system and poor finished product performance in a traditional hydrolysis process are solved. The proportion of the hydrolysate with the particle size smaller than 1 micron is reduced by 0.5%, the hydrolysis rate is increased by 0.15%, the L value of the calcined finished product is larger than or equal to 95.5, the b value is smaller than or equal to 2.7, the daily output is increased to 15 batches, and remarkable economic and technical benefits are achieved.

The application discloses a method for preparing metatitanic acid with stable particle size from concentrated titanium liquid in titanium dioxide production, and particularly relates to the technical field of titanium dioxide production. First, the concentrated titanium liquid and alkali liquid are respectively preheated to 85-95 DEG C, the concentrated titanium liquid is added into the alkali liquid, the temperature is maintained at 95-120 DEG C for reaction, the reaction time is 5-10 min, and the crystal seed is obtained when the detection of crystal seed stability reaches below 100 ml water / 10 ml titanium liquid; then the crystal seed obtained in step one is added into the concentrated titanium liquid, and the stirring, pressurizing and heating are carried out for reaction, the reaction time is 15-60 min, and the reaction is kept for maturation after the reaction is completed; finally, the titanium liquid after the reaction in step two is cooled, and metatitanic acid with stable particle size is obtained after filtration.

The application discloses a continuous hydrolysis system for sulfuric acid method titanium dioxide, which comprises a hydrolysis device, a temperature control pipeline, a metatitanic acid storage tank and a steam pipeline, wherein the hydrolysis device comprises a first preheating tank, a second preheating tank, a third preheating tank, a hydrolysis crystal seed preparation tank and a continuous mixing tank, the bottoms of the first preheating tank and the second preheating tank are communicated with the top of the hydrolysis crystal seed preparation tank respectively, and the bottoms of the third preheating tank and the hydrolysis crystal seed preparation tank are communicated with the top of the continuous mixing tank respectively; a pipeline heater and a pipeline cooler are sequentially connected between a first pipe opening and a second pipe opening of the temperature control pipeline, the first pipe opening is communicated with the continuous mixing tank, and the metatitanic acid storage tank is communicated with the second pipe opening. The application further provides a continuous hydrolysis method. The system and the method can convert the intermittent titanium liquid hydrolysis process into a continuous production, greatly improve the production efficiency, reduce the labor intensity of operation, and are favorable to promote the full-automatic production of the sulfuric acid method titanium dioxide.

The application discloses a nanosheet titanic acid / zeolite heterostructure catalyst and a preparation method thereof. The nanosheet titanic acid is used as a hetero-nucleation aid, and the nanosheet titanic acid / zeolite heterostructure catalyst is quickly prepared through a hydrothermal reaction. The mass content of titanic acid in the nanosheet titanic acid dispersion liquid is 9-10 wt.%. The nanosheet titanic acid with the hetero-nucleation effect is introduced to quickly nucleate and grow the molecular sieve. The nanosheet titanic acid as the hetero-nucleation aid promotes the nucleation and growth of the molecular sieve and forms the coating of the molecular sieve to limit the micro size of the molecular sieve, so that the specific surface area of the nanosheet titanic acid / TS-2 molecular sieve heterostructure catalyst is ensured, and the silicon / titanium ratio of the heterostructure is significantly reduced.

The application relates to the field of titanate, in particular to a preparation method of potassium titanate whisker and titanium dioxide whisker products. The preparation method of the potassium titanate whisker and the titanium dioxide whisker products is synthesized by adopting a high-temperature sintering and natural slow cooling process method, and the preparation method is characterized by the following steps: S1. mixing; S2. high-temperature sintering and melting; S3. solidification and crushing; S4. dilution decomposition adjustment conversion; S5. drying; and S6. high-temperature sintering setting. The application has low cost and complete whisker.

The invention relates to the technical field of catalysts and dicyclopentadiene dioxide synthesis, and discloses an environment-friendly selective layered catalyst and a preparation method and application thereof, and the preparation method of the layered catalyst comprises the following steps: (A) providing a hydrotalcite precursor; (B) providing a peroxy titanic acid complex; and (C) carrying out second contact on the hydrotalcite precursor provided in the step (A) and the peroxy titanic acid complex provided in the step (B) in an inactive atmosphere, and then recovering a solid product. When the layered catalyst provided by the invention is used for preparing dicyclopentadiene dioxide through oxidation of dicyclopentadiene, the conversion rate of dicyclopentadiene and the selectivity of dicyclopentadiene dioxide can be remarkably improved.

A preparation method of a digestion solution for corrosion of tantalum-niobium-containing alloy waste comprises the following synthesis steps: taking a certain amount of halogenated iron salt, adding the halogenated iron salt into dilute halogen acid under high-speed stirring until the halogenated iron salt is completely dissolved, then adding hexafluorotitanic acid and titanyl sulfate solids according to a certain proportion to be completely dissolved, then adding excessive newly-prepared titanium hydroxide to react for a period of time, and finally adding a catalyst to react for a period of time; and filtering and adding graphite powder for later use. The decomposition method comprises the following steps: shearing and crushing the tantalum-niobium alloy-containing waste material to obtain the result; and adding the digestion solution into a small section with the diameter of 50 mm, heating to 40-70 DEG C, dropwise adding hydrogen peroxide, cooling the discharged gas, and enabling the condensed water to flow back to the system. Filtering after sampling and detecting that no metal exists, adjusting the filtrate to an initial state after analyzing components, adding a proper amount of sulfuric acid and hydrofluoric acid into a filter cake to adjust and dissolve until the filter cake meets the extraction requirement, and entering an extraction process line.

The invention discloses a coating liquid composition, a self-cleaning antireflection film and a preparation method and application of the self-cleaning antireflection film. The coating liquid composition comprises silicon dioxide sol, titanium dioxide sol and octadecylamine, the titanium dioxide sol is prepared from the following raw materials: tetrabutyl titanate and molybdate; the silicon dioxide sol is prepared from the following raw materials: triaminopropyltriethoxysilane, ethyl orthosilicate and hexamethyldisilazane. The self-cleaning antireflection film formed by the coating liquid composition not only has excellent decontamination and self-cleaning effects, but also has excellent mechanical strength.

This disclosure provides at least one embodiment of a method for preparing sponge titanium, comprising: pretreating bauxite tailings to obtain a first mixture; acid-treating the first mixture and filtering it to obtain a second mixture; placing the second mixture in a reaction vessel containing an alkaline substance to react, thereby converting ferrous titanate into titanate and ferric oxide or ferrous hydroxide to obtain a third mixture; filtration of the third mixture to obtain a first solid phase and a first liquid phase, and drying and grinding the first solid phase; calcining the dried and ground first solid phase to form elemental iron, and performing magnetic separation to remove the elemental iron; adding an acidic substance to the first liquid phase to react and obtain metatitanic acid colloid, and washing the metatitanic acid colloid; and sequentially subjecting the metatitanic acid colloid to calcination, chlorination, and displacement reactions to obtain sponge titanium. The sponge titanium obtained by this preparation method has high purity.

The application relates to the technical field of anti-radiation glass, and discloses anti-radiation glass for low-orbit spacecrafts, a preparation method and application thereof. The anti-radiation glass for low-orbit spacecrafts comprises the following raw materials in parts by mass: quartz sand 45.5-68 parts, aluminum hydroxide 8.41-10.25 parts, boric acid 8.86-24.62 parts, carbonate 24-43.69 parts, cerium dioxide 0.6-2.1 parts, gallium sesquioxide 0.2-1.2 parts, antimony sesquioxide 0.5-1 part, nitrate 2-4.6 parts, molybdenum dioxide 0.5-1.4 parts, lead oxide 0.8-2.2 parts, tetrabutyl titanate 3.4-12.75 parts, and kerosene 0.2-0.8 part. Through the technical scheme, the problem of insufficient anti-radiation performance of the glass for low-orbit spacecrafts in the related art is solved.

The invention relates to the technical field of preparation of high-purity materials, and discloses a method for purifying high-purity electronic-grade titanium dioxide by adopting a novel chelating agent through a sulfuric acid method, which comprises the following steps: S1, preparing a chelating agent solution: selecting the novel chelating agent, dissolving the novel chelating agent in a solvent, and stirring until the novel chelating agent is completely dissolved to obtain a chelating agent solution A; s2, pretreating metatitanic acid: taking a metatitanic acid material in a slurry tank after secondary water washing in sulfuric acid method production as metatitanic acid B, measuring the concentration, heating and continuously stirring to form uniform slurry; s3, carrying out complexation reaction; s4, washing and filter pressing; s5, calcining and crushing; and S6, carrying out parallel verification. The technical effects of efficiently chelating harmful metal ions and improving the product purity are achieved by adopting a complex reaction process that a novel multi-coordination chelating agent is matched with the chelating agent firstly and then the system environment is adjusted, and compared with the technical scheme that oxalic acid is used as a complexing agent in the prior art, the technical scheme has the advantages that the production cost is reduced; the problems of limited complexing ability and incomplete removal of harmful metal ions are solved.

The invention provides a whitening type composite modifier as well as a preparation method and application thereof, and belongs to the technical field of inorganic material modification. The whitening type composite modifier provided by the invention is prepared from the following preparation raw materials in parts by mass: 55 to 65 parts of titanium dioxide, 2 to 5 parts of a fluorescent whitening agent, 15 to 25 parts of an aluminate coupling agent, 5 to 10 parts of a titanate coupling agent, 10 to 20 parts of stearic acid, 2 to 5 parts of a dispersing agent and 1 to 2 parts of an antioxidant. The whitening type composite modifier can be applied to modification of various inorganic powder, the whiteness of the inorganic powder treated by the whitening type composite modifier is obviously improved, and the dispersity and the stability are obviously improved.

The application discloses a Pb (1‑x) Ln x (Zr 0.52 Ti 0.48 )O3-based piezoelectric thick film material and a preparation method thereof. The implementation scheme is as follows: lead oxide, zirconium dioxide, titanium dioxide and oxide of a lanthanide element are fired to form pre-fired powder; lead acetate trihydrate, tetrabutyl titanate, oxide of the lanthanide element and zirconium n-propyl alcohol or zirconium isopropyl alcohol are mixed into a precursor solution by a sol-gel method; the powder and the gel are mixed to form slurry, the slurry is spin-coated on a substrate, and after drying and pyrolysis treatment, annealing is performed in an air atmosphere or an ACB atmosphere compensation, so as to obtain Pb (1‑x) Ln x (Zr 0.52 Ti 0.48 )O3 piezoelectric thick film with a thickness greater than 10 microns. The application has the advantages of high crystallinity, good compactness, high breakdown field strength, high electrical comprehensive performance, simple process and good repeatability, and can be used in micro-electro-mechanical system (MEMS), micro-actuator, sensor and ultrasonic transducer.

The application discloses a process for preparing high-purity titanium dioxide from metatitanic acid, and relates to the technical field of titanium dioxide preparation.The process comprises the following steps: adding water to a primary metatitanic acid filter cake obtained by leaching ilmenite powder, and performing acid dissolution; using a composite reducing agent to strengthen reduction treatment; performing hot washing, salt treatment, drying and calcination, so as to obtain high-purity titanium dioxide.The titanium dioxide obtained by the process has an iron content of less than 10 ppm, a whiteness analysis L value of more than 98%, and stable yellow-blue value (b value).The process is based on the sulfuric acid method titanium dioxide production technology, and provides a complete process technology for producing high-quality titanium dioxide with simple process, convenient operation, low cost and low pollution.

The present application relates to the field of galvanized layer surface corrosion protection technology, especially inorganic resin paint, preparation process and application in electro-galvanized steel sheet. An inorganic resin paint comprises A component and B component, the mass ratio of the A component to the B component is 100:(10-40); the A component is mainly made of epoxy silane, methyl trimethoxysilane, phenyl triethoxysilane, C1-2 alcohol, deionized water and pH value regulator; the mass ratio of the C1-2 alcohol to the deionized water is (70-80):(20-30); the sum of the mass of the C1-2 alcohol and the deionized water accounts for 80-96wt% of the A component; the B component is titanium silicon compound sol, and the titanium silicon compound sol is mainly a hydrolytic copolymer formed by titanium ester and silicate. The inorganic coating formed by the present application has good compactness and strong film adhesion, and can have excellent corrosion protection and enhancement effect.

In producing titanium oxide containing rutile-type crystals by adding hydrochloric acid to an aqueous dispersion of an alkali metal titanate, sulfurous acid, disulfurous acid, sulfuric acid or a salt thereof is added. Thus, there is provided a titanium oxide powder which is doped with bivalent sulfur atoms (S2−) and in which a ratio (IA / IR) of a peak intensity (IA) of anatase-type crystals to a peak intensity (IR) of rutile-type crystals as measured by X-ray diffractometry is 0.1 or less. Moreover, a cosmetic is provided by dispersing the titanium oxide powder in a dispersion medium. Thus, bluish color derived from Rayleigh scattering is negated, providing a dispersion, particularly a cosmetic, with excellent transparency and color tone.

This invention discloses a conveying pipe for titanium dioxide production, relating to the field of pipeline technology. The conveying pipe includes a pipe body, the side wall of which is equipped with a rotary switching mechanism for online switching and replacement of pipeline functional components. This conveying pipe, by incorporating the switching mechanism on the side wall of the pipe body, allows for online inspection and replacement of pipeline functional components without shutdown or pressure relief, completely eliminating the downtime maintenance drawbacks of traditional fixed installation structures and ensuring continuous, stable, and efficient conveying of titanium dioxide wastewater. Simultaneously, by installing conical filter screens at both ends of the mounting holes that rotate with the fluid inside the pipe, the impact of large gypsum crystals and metatitanic acid particles can be effectively blocked, achieving dynamic anti-clogging and anti-scaling protection. This prevents pipeline functional components from being encapsulated by crystals, worn, or corroded, significantly extending the service life of heating / aeration components and ensuring the long-term stable operation of the pipeline conveying system.

The present invention relates to a product, the crystallized part of which comprises crystallized phase Li2TiO3 comprising the elements Mn and Fe, said product comprising at least the elements Li, Ti, Fe, Mn and O, the elements Li, Ti, Fe and Mn being present in said product in the following amounts, determined by inductively coupled plasma spectrometry and stated in percentages by weight: - 11% < Li < 15%, - 28% < Ti < 45%, - 0.1% < Mn < 12%, - 0.15% < Fe < 9%, the mass ratio (Mn + Fe) / Ti being such that: 0.03 ≤ (Mn + Fe) / Ti ≤ 0.5.

The invention discloses a high-entropy alloy (HEA) / TiO2 photocatalyst for photo-assisted activation of hydrogen peroxide (H2O2) to efficiently degrade ciprofloxacin hydrochloride and a preparation method thereof, and the preparation method comprises the following steps: by taking tetrabutyl titanate, hydrofluoric acid and at least one of ferric salt, cobalt salt, nickel salt, manganese salt, molybdenum salt, lanthanum salt, aluminum salt and vanadium salt as raw materials, respectively synthesizing HEA and TiO2 through a hydrothermal reaction method; and then, the HEA is loaded on the TiO2, so that the HEA / TiO2 nano particles are prepared. The preparation steps are clear, the repeatability is good, and the obtained catalyst shows an excellent degradation effect in degrading ciprofloxacin through photo-assisted activation of H2O2.