205 results about "Ti oxides" patented technology

The invention discloses TiO2-x (F) powder, a preparation method thereof and application of the TiO2-x (F) powder in strengthening the performance of a solid hydrogen storage material, and belongs to the technical field of hydrogen storage materials and preparation of the hydrogen storage materials. The problems that an existing magnesium-based solid hydrogen storage material is high in hydrogen desorption temperature, slow in low-temperature dynamics and the like are solved. According to the preparation method, the fluorinated transition metal Ti oxide additive doped with the oxygen vacancies is prepared, electrons of Mg are captured by utilizing the strong electronegativity of F atoms on the surfaces of transition metal Ti atoms, MgF2 active catalytic species are generated in the hydrogen absorption and desorption process, and the hydrogen storage performance of MgH2 is further improved. Meanwhile, the construction of oxygen vacancies on the surface of the transition metal Ti atom can provide active sites for Mg / MgH2 nucleation growth, can greatly accelerate the flow of electrons in the hydrogen absorption / desorption process, improves the thermal / dynamic performance, and realizes the reversible hydrogen absorption / desorption of the magnesium-based hydrogen storage material at low temperature.

The invention provides a method for deeply extracting vanadium from vanadium-containing steel slag, which comprises the following steps: mixing the vanadium-containing steel slag and an oxygen-containing microbubble ammonium bicarbonate solution, and carrying out mechanochemical ball milling activation to carry out leaching reaction to obtain a vanadium extracting solution. According to the method, advanced oxidation is cooperated with mechanochemical ball milling to activate and strengthen deep extraction of vanadium in the vanadium-containing steel slag, wrapping of substances such as calcium silicate and calcium titanium oxide on a vanadium-containing solid solution phase is destroyed through mechanical activation, and O2 microbubbles in an ammonium bicarbonate medium are promoted to generate active oxygen under excitation of mechanical activation energy; exposure reaction and deep oxidation extraction of a vanadium-containing phase under mild conditions are achieved, the content of V2O5 in tailings after vanadium extraction is smaller than or equal to 0.5%, and the vanadium extraction rate is 83% or above.

A multilayer ceramic electronic component that includes: a ceramic layer that contains a Ba—Nd—Ti oxide, forsterite, barium borosilicate glass, and MnO; and an electrode in contact with the ceramic layer, wherein the ceramic layer includes a Nd uneven distribution portion where Nd is unevenly distributed at an interface where the ceramic layer is in contact with the electrode.

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.

To provide a method for manufacturing an electrode and a method for manufacturing a battery which can reduce generations of failures in the manufacturing.SOLUTION: According to an embodiment, there is provided a method for manufacturing an electrode including the steps of: applying a slurry including at least one of a niobium-containing oxide and a titanium-containing oxide and water to a collector and obtaining a structure; drying the slurry and forming an active material containing layer; pressing the structure; laminating plural structures to obtain the laminate body, drying the laminate body while pressing both outermost layers of the laminate body, thereby setting the water content amount of the active material containing layer to determine by the Karl-Fischer method to be 600 mass ppm at a maximum.SELECTED DRAWING: Figure 1

The invention discloses preparation of a functionalized GO membrane electrode and application of the functionalized GO membrane electrode in removal of perfluorinated compounds through coupled alternating current catalysis, and the preparation method of the functionalized GO membrane electrode comprises the following steps: performing ultrasonic treatment on a graphene oxide dispersion liquid, adjusting the pH value to be alkaline, adding a functional reagent 1 which is a low-valence titanium oxide or a high-conductivity CNTs material, performing hydrothermal reduction reaction after uniform ultrasonic treatment, and obtaining the functionalized GO membrane electrode. A functional reagent 2 is added into the obtained dispersion liquid, the functional reagent 2 is a compound with imino groups or quaternary ammonium salt, the reaction liquid obtained after the reaction is subjected to suction filtration through a vacuum suction filtration method to a micro-filtration membrane serving as a support, and the functionalized GO membrane electrode is obtained. The functionalized GO membrane electrode prepared by the method disclosed by the invention is applied to an alternating-current electrochemical system, no medicament needs to be added, and the process is simple, economical and environment-friendly. The electrode material is good in stability and high in conductivity, a large number of active species are provided for the catalytic degradation process, degradation products are low in toxicity, and degradation of perfluorinated compounds can be rapidly and efficiently achieved.

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%.

Examples are disclosed that relate to the use of acid-stabilized precursor solutions for forming low-cracking and crack-free titanium-containing oxide films by liquid phase deposition. One example provides a method for forming a titanium-containing oxide film by liquid-phase deposition. The method comprises film a substrate with an acid-stabilized aqueous precursor solution to form a film. The acid-stabilized aqueous precursor solution comprises titanium ions, one or more other metal ions, a photolyzable and / or pyrolyzable ligand, and an acid. The method further comprises exposing the film to one or more of heat or light. Examples are also disclosed that relate to forming optical devices using liquid phase deposition of metal oxide films.

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.

The invention relates to a landfill leachate treatment process, and belongs to the technical field of sewage treatment. A photoelectric-Fenton oxidation treatment process is adopted, a composite catalyst is added, compared with a traditional Fenton process, low-cost, low-energy-consumption and high-efficiency treatment of the landfill leachate is achieved, mesoporous carbon powder serves as a carrier of the composite catalyst, and a large number of iron-cobalt oxide and titanium oxide double heterojunctions are formed on the surface through a chemical synthesis process; under the illumination condition, electrons and holes are effectively separated at a heterojunction interface, compounding of the electrons and the holes is reduced, the electro-catalysis efficiency is improved, meanwhile, the double heterojunctions provide a large number of active sites, generation of more hydroxyl free radicals is promoted, a strong oxidation effect is formed, degradation of organic pollutants is effectively promoted, and the photocatalytic activity is improved. And photocatalysis and electrocatalysis interact, so that the Fenton oxidation efficiency is greatly improved.

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.

Examples are disclosed that relate to the use of acid-stabilized precursor solutions for forming low-cracking and crack-free titanium-containing oxide films by liquid phase deposition. One example provides a method for forming a titanium-containing oxide film by liquid-phase deposition. The method comprises film a substrate with an acid-stabilized aqueous precursor solution to form a film. The acid-stabilized aqueous precursor solution comprises titanium ions, one or more other metal ions, a photolyzable and / or pyrolyzable ligand, and an acid. The method further comprises exposing the film to one or more of heat or light. Examples are also disclosed that relate to forming optical devices using liquid phase deposition of metal oxide films.

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.