167 results about "Ti oxides" patented technology

The invention provides a ternary precursor sequentially coated with titanium and aluminum and a preparation method and application thereof. The ternary precursor comprises a ternary precursor core, and the exterior of the ternary precursor core is sequentially coated with a titanium oxide middle layer and an Al (OH) 3 outer layer. The preparation method comprises the following steps: coating a ternary precursor core with a titanium oxide intermediate layer and an Al (OH) 3 outer layer to obtain a ternary precursor, calcining when the ternary positive electrode material is prepared, dehydrating the Al (OH) 3 outer layer to form an Al2O3 outer layer, inhibiting the volume expansion and shrinkage of the core in the ternary positive electrode material by the titanium oxide intermediate layer and the Al2O3 outer layer, and isolating the ternary positive electrode material from an electrolyte, so that the ternary positive electrode material is prepared. The surface side reaction of the ternary positive electrode material is inhibited; besides, through sequential coating of the titanium oxide intermediate layer and the Al2O3 outer layer, a continuous and defect-free compact layer formed during single coating of the titanium oxide intermediate layer and the Al2O3 outer layer can be avoided, so that lithium ion diffusion is facilitated.

The invention discloses a preparation method of a Ti / Magnli / BDD environmental catalytic electrode for sewage treatment, which comprises the following steps: taking Ti as an electrode substrate, taking a Magnli-phase low-valence titanium oxide as a middle transition layer, and taking BDD as a surface catalytic layer as an electrode of a sandwich structure. The purpose of adopting the Ti / Magni electrode as the substrate electrode is that BDD can be smoothly crystallized to form a film on the surface of the substrate electrode; and Ti is adopted as an electrode substrate which is cheaper than Nb, and a large-size electrode is easier to obtain compared with a wafer.

The invention relates to the technical field of MOS (metal oxide semiconductor), and discloses a VDMOSFET (vertical double-diffused metal oxide semiconductor field effect transistor) with low switching loss, which comprises a metal drain electrode, a metal source electrode, a semiconductor epitaxial layer, a grid electrode and a grid oxide layer covering the surface of the grid electrode, and is characterized in that the semiconductor epitaxial layer internally comprises a sinking layer, a drift layer, a P well layer, a highly doped P layer and an N well layer; a conducting medium is arranged in the drift layer and below the grid electrode, and the section contour of the conducting medium is semicircular; the conducting medium is made of one of silicon dioxide, aluminum oxide, zirconium oxide or titanium oxide, a U-shaped diffusion layer is further arranged on the outer side of the conducting medium, and the U-shaped diffusion layer is in contact with the P well layer. By doping the conductive medium, the conductivity of the drift layer can be increased, the resistance of the drift region is reduced, the on resistance of the device is reduced, and the efficiency of the device in the switching process is improved.

Provided are a doped and coated sodium-ion positive electrode material, a preparation method therefor and a use thereof. The doped and coated sodium-ion positive electrode material comprises a core and a coating layer located on the surface of the core; the core comprises a nickel-iron-manganese sodium-ion positive electrode matrix and a titanium element doped in the nickel-iron-manganese sodium-ion positive electrode matrix; and the coating layer comprises a titanium-containing oxide. According to the provided sodium-ion positive electrode material, by synergistically combining bulk doping of titanium in the core with a titanium-containing oxide surface coating, the voltage decay is mitigated while the capacity is increased.

The present invention provides a chemical mechanical polishing composition comprising: (a) a titanium oxide abrasive; (b) an oxidizing agent; and (c) water, wherein the chemical mechanical polishing composition has a pH of about 7 or less. The invention also provides a method for chemical mechanical polishing of a substrate, in particular a substrate comprising a boron-doped polycrystalline silicon layer on a surface of the substrate, using the composition.

The present invention relates to a method for smelting ferroniobium and enriching rare earths and titanium, comprising: S1, providing a co-existing ore or metallurgical slag containing niobium, titanium, rare earths, and iron; S2, adding a modifier and a siliceous reducing agent, and after high-temperature smelting and reduction, obtaining a layered ferroniobium alloy melt and a slag containing rare earths and titanium; S3, controlling the temperature and cooling the slag containing rare earths and titanium to room temperature, so that the rare earths and titanium in the slag are directionally precipitated and grown in a perovskite phase; S4, crushing and grinding the cooled slag, and obtaining a rare earth-rich perovskite concentrate by flotation. The present invention utilizes a siliceous reducing agent to selectively reduce multiple metal elements in the co-existing ore or metallurgical slag containing rare earths, niobium, titanium, and iron. The method selectively reduces iron oxides and niobium oxides in the material in a high-temperature molten state, avoiding the reduction of titanium oxides and rare earth oxides. The method successfully smelts a ferroniobium alloy melt, obtaining a high-grade ferroniobium alloy melt and a high-grade rare earth-rich perovskite concentrate.

The present invention relates to a low-reflection black screen panel and a coating method thereof, belonging to the coating technical field. In order to solve the existing problems of uneven ink printing and heterochromaticity, a low-reflection black screen panel is provided, wherein the screen panel comprises a glass substrate, a low-reflection black film is coated on the surface of the glass substrate, and the low-reflection black film comprises a layered structure film layer, wherein the layered structure film layer is formed by alternately stacking a film layer coated with titanium oxide and a film layer coated with SiO2 from the side of the glass substrate outward, wherein the titanium oxide is a mixture of TiO and TiO2, and the mass ratio of TiO2 to TiO in the mixture is 1:2.5-3.5. The layered structure film layer has an absorption effect on visible light, so that the layered structure film layer formed after alternate coating can present a black characteristic, and has a low reflectivity effect as a whole, the reflectivity reaches ≤0.3%, and has a good light transmittance, which is about 70%.

This flux-cored wire for welding includes a steel sheath and a flux filled inside the steel sheath and contains an oxide and an alloy component. The total amount X of Mn oxides in terms of MnO is 0.3-15.0% in mass% with respect to the total mass of the flux-cored wire. The total amount Y of Ti oxides in terms of TiO2 is 0.1-10.0%. The ratio of the total amount X of Mn oxides to the total amount of the total amount X of Mn oxides and the total amount Y of Ti oxides (X / (X+Y)) is 0.65-1.00. The total content of Mn excluding Mn contained as an oxide is 3.0-30.0%.

According to an embodiment, an electrode containing an active material containing a titanium oxide is provided. The active material has an average primary particle size of 200 nm or more and 600 nm or less. Regarding the specific surface area S of the electrode based on the nitrogen adsorption method A and the pore specific surface area S based on the mercury intrusion method B satisfy the relationship of 0.3 ≤ S A / S B < 0.6.

Disclosed herein is a metal oxide aerogel catalyst for hydrogenation and / or hydrodeoxygenation, a method for preparing the same, and a method for hydrogenation and / or hydrodeoxygenation using the same. The catalyst consists of a metal and an oxide thereof, and the catalyst is in a form of an aerogel produced by supercritical drying. The catalyst has an effect of providing high hydrogenation and / or hydrodeoxygenation efficiency of an oxygen-containing compound.

The invention relates to a hydrogen evolution reaction catalyst, in particular to a titanium dioxide phase junction material, a preparation method thereof and application of the titanium dioxide phase junction material in an electrolytic water hydrogen evolution reaction, and the preparation method comprises the following steps: S1, putting a foam titanium substrate into an alkaline solution to carry out a hydrothermal reaction, and washing and drying a reaction product; s2, calcining the reaction product obtained in the step S1 for the first time to obtain a titanium oxide; and S3, carrying out secondary calcination on the titanium oxide obtained in the step S2, and carrying out doping induced phase change to obtain the titanium dioxide phase junction material. Compared with the prior art, the preparation method has the advantages that the problems that heterojunction has interface defects and phase junction is difficult to prepare in a hydrogen evolution reaction catalyst based on titanium dioxide in the prior art are solved, and the preparation of the phase junction catalytic material which is simple in technological process and capable of effectively saving energy is realized; the catalyst can be used for catalytic hydrogen evolution reaction under electrolyte conditions with different pH values.

Provided are a method for manufacturing a titanium oxide (TiOx) thin film including: (S10) mixing a titanium precursor and a peroxide aqueous solution to prepare a gel mixture including a titanium oxide (TiOx); (S20) heating the gel mixture to prepare a titanium oxide (TiOx) gel from which a peroxotitanic acid precipitate, a peroxide, and water have been removed; (S30) preparing a dispersion in which the titanium oxide (TiOx) gel is dispersed in a solvent; (S40) applying the dispersion on a substrate; and (S50) heat treating the substrate on which the dispersion has been applied, and a titanium oxide (TiOx) thin film manufactured therefrom.

The purpose of the present invention is to remove a titanium oxide film provided on the surface of a substrate. This method for removing a titanium oxide film on the surface of a substrate includes: a step for supplying a mixed gas containing hydrogen fluoride gas and ammonia gas to the surface of the titanium oxide film to chemically react the titanium oxide film with the mixed gas, and thereby generate a gaseous reaction product from the titanium oxide film to remove the titanium oxide film from the surface of the substrate; and a step for heating the substrate to remove deposits adhering to the substrate when the reaction product is generated.

To provide a manufacturing method of titanium oxide powder that can manufacture titanium oxide powder with relatively high purity while easily maintaining particle shape, and to provide titanium oxide powder.SOLUTION: A manufacturing method of titanium oxide powder according to the present invention is a method for manufacturing titanium oxide powder comprising TiO2, and comprises a granulation step of using raw material powder comprising TiO2 having a BET specific surface area of 10 m2 / g to 100 m2 / g and a rutilization rate of less than 10% and performing spray drying on the raw material powder using a slurry comprising the raw material powder and water as a dispersion medium to obtain granulated powder.SELECTED DRAWING: None

The application relates to the technical field of electrolytic hydrogen production, and particularly discloses an anode material, a preparation method thereof and application of the anode material in a proton exchange membrane electrolytic cell. The anode material comprises a titanium or titanium alloy base and a surface composite coating, the total thickness of the coating is 0.7-1.5 microns, and the coating comprises, in sequence along the direction away from the base, a first layer (containing at least two kinds of titanium oxides, the total oxygen content is gradually decreased), a transition layer (containing titanium oxides and titanium nitride, the oxygen content is gradually decreased and the nitrogen content is gradually increased), a second layer (containing titanium nitride) and a third layer (containing a precious metal catalytic material such as Pt / Ir, the porosity is 25-50%). The anode material is prepared by using magnetron sputtering, the composition gradient control is realized by dynamically adjusting the argon / oxygen / nitrogen ratio, and the deposition is subjected to annealing treatment in an argon atmosphere. The structure is synergistically optimized through the composition and gradient between the layers, the corrosion resistance, the electrical conductivity and the service life of the anode material are significantly enhanced, and the problems of easy passivation and short service life of the traditional anode are solved.

This invention relates to the technical field of catalyst preparation, and discloses a non-precious metal hydrogenation catalyst, its preparation method and application, and a method for selective hydrogenation of butadiene and 1-butene isomerization. The catalyst comprises an active metal and a support, wherein the support comprises alumina, a molecular sieve with a BEA structure, and a modified metal oxide, wherein the modified metal oxide is at least one selected from titanium oxide, zirconium oxide, and cerium oxide; wherein the modified metal oxide has η < 0.3 and θ ≥ 50; wherein the active metal comprises Cu and optionally other metal components; wherein the other metal components are at least one selected from Sn, Ni, Fe, Ag, In, Re, Mo, Co, Ca, and W. This catalyst exhibits catalytic activity close to that of precious metal catalysts, significantly reducing catalyst costs. Furthermore, this catalyst also possesses extremely high 1-butene isomerization and desulfurization activity.

The invention discloses a core-shell structure catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The core-shell structure catalyst comprises an inner core and a shell, wherein the inner core comprises carbon spheres; the shell covers the surface of the inner core and comprises titanium oxide. The preparation method of the core-shell structure catalyst comprises the following steps: preparing carbon spheres; mixing and impregnating carbon spheres and a titanium n-propoxide solution, and drying by distillation to obtain an impregnated product; placing the impregnated product in a nitrogen or inert atmosphere, raising the temperature to 700-900 DEG C at the speed of 3-5 DEG C / min, raising the temperature to 1100 DEG C at the speed of 4-6 DEG C / min for reaction, and cooling to obtain the Ti3O5-coated CS core-shell structure catalyst. The core-shell structure catalyst takes the carbon spheres as the core and the titanium oxide as the shell, and is used for the magnesium-based hydrogen storage material, so that the dehydrogenation temperature of the magnesium-based hydrogen storage material can be obviously reduced, and the dehydrogenation temperature is lower than 300 DEG C.

Provided are: a negative electrode for an all-solid-state secondary battery, which has a low resistance value; a method for producing the negative electrode; and an all-solid-state secondary battery. The present invention relates to targets 12, 3, 7, 11 of sustainable development targets. The negative electrode for an all-solid-state secondary battery is characterized by comprising a molded body of a negative electrode mixture containing a solid electrolyte and a negative electrode material containing a negative electrode active material, the negative electrode material containing, as the negative electrode active material, a carbon material having, on the surface thereof, a layer containing an oxide having lithium ion conductivity. The carbon material contains at least one of graphite and hard carbon, the oxide contains at least one of lithium niobium oxide, lithium titanium oxide and lithium phosphorus oxide, the amount of the oxide is 1 part by mass or more with respect to 100 parts by mass of the carbon material, and a sulfide-based solid electrolyte is contained as the solid electrolyte. The thickness of the molded body of the negative electrode mixture is 200 [mu] m or more and 3000 [mu] m or less.

Provided are a method for producing a titanium-based electrolytic raw material with relatively low Al and O contents while suppressing or eliminating the use of calcium fluoride and potassium perchlorate, and a method for producing pure metallic titanium or Ti—Al alloy. The method for producing a titanium-based raw material for electro-refining according to the present invention is a method for producing a titanium-based raw material for electro-refining used for molten salt electro-refining to obtain pure metallic titanium or Ti—Al alloy, the method comprising: a reaction step of bringing a titanium compound, at least a part of the titanium compound containing titanium oxide, into contact with, in melt, pure metal and / or alloy of aluminum as a reducing agent, and a melting accelerator, and causing reactions including deoxidation of a part of O in the titanium oxide to obtain a titanium alloy product comprising Al and O, wherein the melting accelerator comprises calcium oxide (CaO), and a content of calcium oxide in the melting accelerator is 80% by mass or higher.

The invention belongs to the field of sealing materials, and discloses a high-pressure-resistant hydrogen embrittlement-resistant metal rubber composite sealing material and a preparation method thereof. The high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber composite sealing material comprises a titanium alloy base material, a metal rubber layer and a metal rubber layer which are sequentially stacked from bottom to top, the titanium oxide layer is generated on the surface of the titanium alloy base material in situ; and the rubber layer is adhered to the surface of the titanium oxide layer through hot pressing treatment. The invention further discloses a preparation method of the high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber composite sealing material, and the hydrogen-embrittlement-resistant metal rubber composite sealing material which can still keep stable deformation in a high-pressure environment is prepared by constructing the hydrogen-inhibiting oxidation layer and combining surface roughening, laser irradiation treatment and hot pressing treatment. After the high-pressure-resistant and hydrogen-embrittlement-resistant metal rubber sealing material is kept in a 100 MPa high-pressure hydrogen environment for 1000 hours, the tensile strength retention rate is larger than or equal to 88%, the percentage elongation retention rate after fracture is larger than or equal to 80%, and the deformation is smaller than or equal to 0.5%.

The invention discloses a composite solid-state electrolyte, a preparation method thereof and a solid-state lithium metal battery, and the method comprises the following three steps: preparation of bismuth oxyiodate nanoparticles, preparation of lithium lanthanum titanium oxide nanorods and preparation of the composite solid-state electrolyte, the preparation method comprises the following steps: dissolving lithium bis (trifluoromethanesulfonimide) LiTFSI and polyvinylidene fluoride (PVDF) into N, N-dimethylformamide to obtain a first mixed solution, respectively weighing bismuth oxyiodate powder and 0.1 g of lithium lanthanum titanium oxide nanorods, adding the weighed bismuth oxyiodate powder and 0.1 g of lithium lanthanum titanium oxide nanorods into the first mixed solution, carrying out ultrasonic treatment and stirring to obtain a second mixed solution, pouring the second mixed solution into a polytetrafluoroethylene plate, and carrying out ultrasonic treatment to obtain the bismuth oxyiodate / lithium lanthanum titanium oxide composite material. And drying in vacuum to obtain the composite solid electrolyte, wherein the mass fraction of the bismuth oxyiodate powder in the second mixed solution is 5-20%. The invention solves the technical problems of low ionic conductivity and lithium dendrite growth of the solid electrolyte in the prior art.

The invention belongs to the field of titanium chemical industry, and particularly relates to a method for removing phosgene in titanium tetrachloride, which comprises the following steps: a chlorination process: mixing a titanium-containing oxide and a carbonaceous reducing agent, pouring into a chlorination reaction furnace, heating to 700-725 DEG C, and carrying out chlorination reaction to obtain crude titanium tetrachloride; a rectification process: introducing the crude titanium tetrachloride into a rectification tower for rectification, and controlling the ratio of the distillate of the rectification tower to the feed amount to be 30-50% to obtain fine titanium tetrachloride; stirring and heating, namely introducing the fine titanium tetrachloride into a stirring and heating tank, heating and stirring to remove phosgene, and controlling the heating temperature to be 20-25 DEG C and the stirring time to be 5-10 minutes to obtain a titanium tetrachloride product and tail gas; and a tail gas treatment process: enabling the tail gas to pass through an alkali liquor absorption tower to absorb residual phosgene. According to the method, phosgene in titanium tetrachloride is efficiently removed by controlling the chlorination reaction temperature, rectification parameters and heating and stirring parameters.

The present invention provides a method for digesting titanium oxides in sodium cathode materials and a method for detecting titanium content, which comprises the following steps: uniformly mixing the sodium cathode material with barium carbonate to obtain a pre-sintered material; sintering the pre-sintered material in a heating box to obtain a digestion sample 1; dissolving the digestion sample 1 with an acid solution to obtain a digestion sample 2; sintering at a temperature of 500 to 800° C. and for a sintering time of 1 to 2 hours; diluting and fixing the digestion sample 2, and detecting the titanium content therein using an ICP technique and a standard curve method. In the present invention, barium carbonate is mixed with the titanium oxides in the sodium cathode material and sintered to perform a melting reaction, which not only achieves effective conversion of the titanium oxides, but also facilitates subsequent digestion and titanium extraction, thereby increasing the yield of the titanium element; and by avoiding the use of sulfuric acid and a strong sodium-containing base, the efficiency and accuracy of detecting the titanium content using the ICP technique are improved; compared with traditional technologies, the present method significantly reduces the requirements for experimental containers, thereby improving the economic efficiency and safety of the experiment.

The present application relates to a kind of method for preparing metal titanium using titanium oxide containing slag, belong to resource clean utilization technical field.Titanium oxide containing slag, low-purity silicon and slagging agent are reduced smelting together, after slag-gold separation, obtain bulk Si-Ti intermediate alloy and residue;The obtained bulk Si-Ti intermediate alloy is crushed into Si-Ti intermediate alloy particles with particle size less than 4mm;With the obtained Si-Ti intermediate alloy particles as anode, with metal molybdenum or metal nickel as cathode, with metal titanium as reference electrode, with NaCl-KCl-NaF as molten salt, and Na3TiF6 Or K3TiF6 is added to molten salt, the valence of titanium in molten salt electrolysis process is controlled to +3, under high-purity argon atmosphere, at 973K, after molten salt electrolysis, metal titanium is deposited on cathode, and anode forms metal silicon powder.The present application first provides a kind of method for separating silicon titanium intermediate alloy obtained by reducing titanium oxide containing slag with silicon into metal titanium and metal silicon powder, realizes the clean utilization of titanium oxide containing slag or waste.

The application discloses a sludge resource utilization method and application thereof. The sludge resource utilization method comprises the following steps: performing electro-fermentation treatment on sludge to be fermented in an anode chamber of an electrolytic cell; and the anode electrode in the anode chamber comprises a carbon-based material modified by titanium oxide. The anode electrode of the electrolytic cell comprises the carbon-based material modified by titanium oxide, the hydrophilicity of the surface of activated carbon particles can be significantly improved by modifying the carbon material by titanium oxide, the biocompatibility and electrocatalytic activity of the material are improved, the growth of microorganisms is facilitated, the anaerobic fermentation speed of bacteria can be improved, the electro-fermentation process speed and treatment effect are optimized and improved, and the effective recovery of elements such as nitrogen, iron and phosphorus contained in the sludge is realized, so that the application prospect is good.

Provided is a surface-treated steel sheet which can be manufactured without using hexavalent chromium and which has excellent sulfur blackening resistance, coating secondary adhesion, and appearance at the same time. A surface-treated steel sheet which has, on at least one surface of a steel sheet, a Ni-containing layer and a coating layer that is disposed on the Ni-containing layer and contains at least one of a Zr oxide and a Ti oxide, and which has a water contact angle of 50 DEG or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface of 5.0% or less relative to all the elements.

The invention belongs to the technical field of titanium anode material preparation, and particularly relates to a device facilitating titanium wire anode acid pickling and brushing and a treatment process. Through the design of the winding screw rod array, the titanium wires are kept dispersed without contact in a winding state, the problems of incomplete acid pickling, material accumulation during brushing or incomplete brushing and the like caused by mutual contact of the titanium wires in a traditional process are thoroughly solved, the product quality of the titanium wire anode is effectively improved, and the service life of the titanium wire anode is effectively prolonged. The titanium wire adopts the layout design of longitudinal winding, the longitudinal space is fully utilized, the problem that the transverse space occupation is too large due to the slender and bending characteristics of the titanium wire is avoided, the transverse space of a production site is greatly saved, and the space utilization rate is improved. Furthermore, the surfaces of the base and the winding screw rod are coated with ruthenium-titanium oxide coatings, so that the corrosion effect in the pickling process can be resisted, the service life of the device is prolonged, the equipment replacement frequency is reduced, and the material loss and the production cost are reduced.

This invention provides a secondary battery that generates little gas during manufacturing and exhibits excellent lifespan performance at high temperatures, as well as a method for manufacturing the secondary battery. The method for manufacturing the secondary battery includes: a step of preparing a battery structure having a positive electrode, a negative electrode, and an electrolyte; a step of obtaining a processing potential adjustment state by adjusting the positive electrode potential of the positive electrode to a range of 4.3V to 4.8V based on the redox potential of lithium and adjusting the negative electrode potential of the negative electrode to a range of 0.5V to 1.1V based on the redox potential of lithium; and a step of maintaining the battery structure in the processing potential adjustment state. The positive electrode comprises Li... x M1O2 represents a nickel-containing oxide. M1 is a metallic element containing at least 50% Ni by elemental ratio, and 0

The invention discloses an anti-reverse electrode, a preparation method thereof and a membrane electrode, and the preparation method of the anti-reverse electrode comprises the following steps: dispersing titanium oxide in isopropanol to obtain a first mixed solution; mixing the first mixed solution with a Nafion resin solution to obtain a second mixed solution, and performing vacuum drying on the second mixed solution to obtain a Nafion resin-titanium oxide compound; putting the Nafion resin-titanium oxide compound and a platinum-carbon catalyst into a ball-milling tank according to a preset proportion, and carrying out ball-milling treatment to obtain mixed slurry; a preset carrier is coated with the mixed slurry in a blade coating mode, an anti-reverse-pole catalyst layer is formed on the preset carrier, and the anti-reverse-pole electrode is obtained. The Nafion resin-titanium oxide compound is introduced, stable perfluorinated sulfonic acid resin and a pore network are constructed, an efficient transmission path can be provided for protons and gas, the influence of catalyst degradation and structure change on performance is reduced, and the overall efficiency of the battery is improved.

Provided is a coating agent for forming an etching resist coating film that is capable of forming an etching resist coating film which has excellent laser removability, resist characteristics, and separability. A coating agent for forming an etching resist coating film according to the present invention contains, in a solvent, 100 parts by mass of an aqueous alkyd resin, 0.10 parts by mass to 30 parts by mass of a melamine resin, 50 parts by mass to 200 parts by mass of an aluminum-containing oxide, 30 parts by mass to 100 parts by mass of a titanium-containing oxide, and 0.10 parts by mass to 5.0 parts by mass of carbon black in terms of solid content, and the total amount of the respective solid contents of said components accounts for 80 mass% or more of the total solid content.