468 results about "Titanium tetrachloride" patented technology

The invention provides a novel method for synthesizing 1, 4-bis (4-fluorobenzoyl) benzene, which belongs to the technical field of aromatic halide production, and comprises the following steps: under inert gas, adding supported solid acid and fluorobenzene into a reaction container; the preparation method comprises the following steps: dropwise adding paraphthaloyl chloride into a reaction container, and reacting at 5-30 DEG C for 1-8 hours to obtain 1, 4-bis (4-fluorobenzoyl) benzene; carrying out purification treatment on the reaction system to obtain 1, 4-bis (4-fluorobenzoyl) benzene with the purity of 97.2% or above; the supported solid acid is composed of a carrier and Lewis acid; lewis acid is selected from any one of aluminum chloride, ferric chloride, titanium tetrachloride and zinc chloride; the carrier is selected from any one of an HY molecular sieve, an Hbeta molecular sieve, a ZSM-5 molecular sieve, acid-treated K10 montmorillonite, aluminum oxide and an MCM-41 molecular sieve. The reaction system condition is mild, the product purity is larger than or equal to 97.2%, after the condition is optimized, the purity is larger than 99.5%, the product and the catalyst can be separated through filtering, waste salt is avoided, the catalyst can be recycled, and the reaction is green and environmentally friendly.

The invention discloses a sample pretreatment method for measuring total carbon in titanium tetrachloride and a method for measuring total carbon in titanium tetrachloride, and belongs to the technical field of analytical chemistry. The sample pretreatment method comprises the following steps: carrying out the whole process under the protection of inert gas, adding a titanium tetrachloride sample to be detected into a strong alkali solution containing a catalyst, carrying out sufficient hydrolysis, and carrying out evaporation to dryness to obtain a solid matter of the sample to be detected after hydrolysis. The method for measuring the total carbon in the titanium tetrachloride comprises the following steps: preparing a to-be-measured sample solid matter into to-be-measured sample powder, measuring the total carbon content of the to-be-measured sample powder through a total carbon analyzer, and converting to obtain the total carbon content in a to-be-measured titanium tetrachloride sample. The method can effectively solve the problems that the final measurement result is low due to volatilization and loss of part of components during sample pretreatment for total carbon measurement in the titanium tetrachloride in the prior art; the analysis condition of the whole determination method is harsh, the detection cost is high, and the quality control is difficult.

The invention provides a titanium tetrachloride boiling chlorination process optimization method based on a causal model and electronic equipment, and the method comprises the steps: constructing a generation mechanism between structural equation model expression variables based on the causal relationship between boiling chlorination key process parameters and result variables; the effect of external intervention on the TiCl4 yield and unit cost is simulated through causal inference, and a multi-target optimization model with the minimization of the unit product manufacturing cost and the maximization of the TiCl4 yield as targets is constructed in combination with the structural model and Monte Carlo sampling estimation expectation; and iteratively solving the optimization model by adopting a causal-based non-dominated sorting genetic algorithm, and obtaining a Pareto optimal solution set meeting variable constraint conditions through operations such as causal variable classification, dynamic penalty weighting, non-dominated sorting and sensitive driving disturbance. According to the method, a causal modeling and optimization integrated framework suitable for the boiling chlorination process is constructed, personalized process strategy generation and production operation decision making are supported, and the raw material utilization rate and the process operation economy are improved.

The invention discloses a method for determining the content of total carbon, inorganic carbon and organic carbon in titanium tetrachloride, and belongs to the technical field of analytical chemistry. The determination method comprises the following steps: under inert atmosphere protection and a low-temperature environment, adding a titanium tetrachloride sample into an inorganic acid solution, fully hydrolyzing, and fixing the volume to obtain hydrolysate; analyzing the concentration of total carbon and inorganic carbon in the hydrolysate by using a TOC (Total Organic Carbon) analyzer; and calculating the contents of total carbon, inorganic carbon and organic carbon in the titanium tetrachloride sample according to the concentrations of total carbon and inorganic carbon in the hydrolysate. According to the method, inorganic carbon and total carbon in the hydrolysate can be directly measured, the content of organic carbon is calculated through a difference value method, and accurate typing of carbon forms is achieved. The method is simple to operate, short in detection period, high in efficiency and lower in cost. The method can effectively solve the problem that blind areas exist in impurity traceability and accurate control due to the fact that detection data of total carbon, inorganic carbon and organic carbon cannot be accurately separated through an existing method for measuring the carbon-containing compounds in titanium tetrachloride.

The invention relates to the field of coatings, and discloses a wear-resistant and corrosion-resistant high-entropy alloy composite coating and a preparation method thereof.The wear-resistant and corrosion-resistant high-entropy alloy composite coating is prepared by depositing functional high-entropy alloy composite powder on the surface of a base body in a laser cladding mode, the functional high-entropy alloy composite powder comprises high-entropy alloy powder, a modified additive and composite ceramic powder, the modified additive is prepared by using urea and titanium tetrachloride as raw materials, growing nano titanium nitride particles on the surface of a silicon carbide nanowire in situ to prepare a nano titanium nitride / silicon carbide nanowire composite material, and then coating a layer of nano titanium dioxide particles on the surface of the nano titanium nitride / silicon carbide nanowire composite material by using tetrabutyl titanate; and the composite ceramic powder is prepared by compounding zirconium carbide, niobium carbide, hafnium carbide and tantalum disilicide. The hardness, wear resistance and corrosion resistance of the high-entropy alloy coating are enhanced by adding the modified additive and the composite ceramic powder.

The invention discloses a preparation method of high-purity titanium dioxide, which is characterized by comprising the following steps: (1) preparing a titanium solution: slowly adding a titanium tetrachloride solution into deionized water to obtain the titanium solution; (2) heat-preservation hydrolysis: adding an acidic dispersant into the titanium liquid obtained in the step (1), stirring and mixing uniformly at room temperature, heating to 80-85 DEG C, preserving heat, and carrying out hydrolysis reaction for 1-2 hours to obtain hydrolysis slurry; (3) obtaining a precursor: cooling, aging, filtering, washing and drying the hydrolyzed slurry obtained in the step (2) to obtain a metatitanic acid precursor; and (4) calcining: calcining the metatitanic acid precursor obtained in the step (3) at 400 DEG C to obtain the high-purity titanium dioxide. According to the preparation method of the high-purity titanium dioxide, provided by the invention, the high-purity (greater than or equal to 99.9%) titanium dioxide is prepared under mild process conditions of low-temperature hydrolysis and low-temperature calcination, the product yield reaches about 90%, and the obtained high-purity titanium dioxide is spherical titanium dioxide with a rutile structure and has good dispersity.

A high-activity titanium silicon molecular sieve microsphere catalyst, a preparation method and its application belong to the field of catalyst technology. Tetraethyl silicate, tetrapropylammonium hydroxide, deionized water and titanium silicon molecular sieve raw powder are used as raw materials to prepare a slurry containing titanium silicon molecular sieve, and titanium silicon molecular sieve microspheres are obtained after granulation; the slurry is evenly mixed with tetrabutylammonium hydroxide solution under water bath conditions to obtain modified titanium silicon molecular sieve microspheres; argon gas is then introduced into the reactor of the fluidized bed device to fluidize the modified titanium silicon molecular sieve microspheres, and the vaporized titanium tetrachloride is diluted and enters the reactor to react with the modified titanium silicon molecular sieve microspheres to obtain a high-activity titanium silicon molecular sieve microsphere catalyst. The present invention uses tetrabutylammonium hydroxide solution to locally etch the surface of the titanium silicon molecular sieve microspheres, increase the defect sites on the surface of the molecular sieve microspheres, promote the chemical bonding between titanium and the molecular sieve microspheres, and increase the content of tetracoordinated titanium on the catalyst, which can be used in propylene epoxidation reactions.

The invention relates to the technical field of stainless steel, in particular to a bamboo-like stainless steel guardrail production and processing technology which comprises the steps that a formed stainless steel guardrail is treated in a spraying mode, and a bamboo paint layer and a protective layer are sequentially constructed on the surface of the stainless steel guardrail by optimizing protective paint; composite zinc-titanium hydrotalcite and double-bond nano silicon dioxide are introduced into the protective coating to serve as filler, anhydrous zinc acetate, titanium tetrachloride and dopamine hydrochloride serve as raw materials, and polydopamine-coated zinc-titanium hydrotalcite is prepared through a hydrothermal method. Then depositing an antibacterial hydrophobic copolymer synthesized by taking 3-methacryloyl dopamine, styrene, dodecafluoroheptyl methacrylate, dimethylaminoethyl methacrylate and citronellyl methyl methacrylate as raw materials; the waterborne polyurethane emulsion is used as a photocurable protective coating base material.

The utility model relates to the technical field of titanium tetrachloride production, in particular to a material circulation device for a multi-stage fluidized bed. The utility model discloses a material circulation device for a multistage fluidized bed. The material circulation device comprises a U-shaped communicating vessel and a gate valve, one end of the U-shaped communicating vessel is communicated with a discharge port of one fluidized bed, the other end of the U-shaped communicating vessel is communicated with a feed port of the other fluidized bed, and an insertion plate groove is formed in the upper portion of the middle of the U-shaped communicating vessel. The gate valve is arranged on the U-shaped communicating vessel and comprises an insertion plate which is inserted into the insertion plate groove in an up-down movable mode. According to the utility model, the U-shaped communicating vessel and the gate valve are combined between the two fluidized beds, so that the adaptive adjustment of the material conveying quantity between the two adjacent fluidized beds is realized, the requirements of materials on flowing in different fluidized beds are met, and the overall reaction efficiency is improved.

The invention discloses a high-strength 6082 aluminum alloy, and relates to the technical field of alloys. When the high-strength 6082 aluminum alloy is prepared, firstly, aluminum chloride, titanium tetrachloride, chromium chloride, cerous nitrate and lanthanum nitrate serve as precursors, carbon fibers are doped, a reinforced phase A is prepared after heat treatment, secondly, aluminum powder, titanium powder, copper powder, chromium powder and manganese powder are prepared into high-entropy alloy to serve as a reinforced phase B, and finally, the high-strength 6082 aluminum alloy is prepared. And the reinforced phase A, the reinforced phase B and the aluminum alloy powder are mixed to prepare the aluminum alloy. The high-strength 6082 aluminum alloy prepared through the method has the good mechanical property.

According to the alkoxy magnesium carrier Ziegler-Natta catalyst and the preparation method thereof, alkoxy magnesium is activated and then loaded with titanium, fluorene diether is selected as an internal electron donor, the obtained catalyst is subjected to post-treatment, and finally the alkoxy magnesium carrier Ziegler-Natta catalyst with excellent performance is prepared. The raw material utilization rate is higher, the adding amount of required titanium tetrachloride is smaller, the steps are simpler, the preparation conditions are mild, the isotactic index of the prepared homo-polypropylene is higher, and the activity of the prepared catalyst is higher.

The invention discloses a method for preparing titanium tetrachloride through gas-based reduction carbonization and fused salt chlorination of melt separation titanium slag. The method comprises the steps that titanium slag obtained through hydrogen reduction and electric furnace melt separation of vanadium-titanium magnetite concentrate is ground to a certain particle size; the titanium slag obtained in the first step is placed in a tubular furnace, the temperature is increased to 1100-1300 DEG C, meanwhile, mixed gas of methane and hydrogen is introduced for a reaction, and a carbonized product is obtained; and mixing the carbonized product obtained in the second step with chlorine salt, and carrying out chlorination reaction at a certain temperature to produce crude titanium tetrachloride. According to the method, gas-based reduction and carbonization of the melt separation titanium slag are achieved, compared with a traditional high-temperature carbonization process, the reaction temperature is greatly reduced, the carbonization rate is remarkably increased, and a new thought is provided for comprehensive utilization of the melt separation titanium slag.

The invention relates to the technical field of metallurgy, and provides a method and system for preparing a spongy TC4 alloy raw material, and the method comprises the following steps: heating and mechanically stirring titanium tetrachloride, aluminum trichloride and vanadium tetrachloride according to a component proportion required for preparing a TC4 alloy to form a uniform chloride mixture; the chloride mixture is subjected to a reduction distillation reaction in the presence of magnesium, and inert gas is continuously introduced in the reaction process for stirring; and after the reaction is completed, separating the byproduct magnesium chloride to obtain the spongy TC4 alloy raw material. According to the scheme, use of high-cost metal raw materials is avoided from the source, meanwhile, the complex steps of electrode preparation and repeated smelting are omitted through the one-step reduction distillation reaction, and energy consumption and time cost are greatly reduced.

The present invention provides an online sampling device and method for a high-temperature furnace bed of a large-scale fluidized chlorination furnace. The sampling device comprises: a sampling port arranged on the boiling chlorination furnace, the sampling port is connected with a sampling pipeline, a sampler is connected at the other end of the sampling pipeline, the sampler is also connected with a negative extraction pipeline, a nitrogen pipeline and a sample outlet pipeline, and a sampling valve group, a negative extraction valve group, a nitrogen valve group and a sample outlet valve group are respectively arranged on the sampling pipeline, the negative extraction pipeline, the nitrogen pipeline and the sample outlet pipeline, respectively, for controlling the on-off of the sampling pipeline, the negative extraction pipeline, the nitrogen pipeline and the sample outlet pipeline. The present invention realizes online sampling outside the chlorination furnace through the arrangement of the above-mentioned sampling device. At the same time, the arrangement of the nitrogen pipeline avoids the blockage of the sample in the sampling pipeline. The negative extraction pipeline closes and collects the chlorine and / or titanium tetrachloride gas overflowed by the sampling at the same time, so as to avoid the gas escaping into the surrounding environment, thereby ensuring the health of the operator.

The invention provides a production method of high-purity sponge titanium. The production method comprises the following steps: firstly, obtaining refined magnesium and refined titanium tetrachloride after secondary refining; then feeding the refined magnesium and the refined titanium tetrachloride into a reactor subjected to titanizing treatment, and carrying out reduction and vacuum distillation in a protective atmosphere by adopting a reduction distillation method to obtain a sponge titanium lump; and finally, the sponge titanium lumps are subjected to surface impurity material stripping, then temperature-controlled crushing and screening are conducted, four-stage sorting including color sorting, magnetic sorting, winnowing and manual sorting is conducted, and the high-purity sponge titanium is obtained. According to the method, the refined titanium tetrachloride is used for purifying the crude magnesium, so that the high-purity production raw material is obtained; in the magnesiothermic reduction vacuum distillation process of titanium tetrachloride, a blocking method of impurities of Fe, Cr and Ni is adopted, and a pure sponge titanium lump is obtained; and identifying and separating high-iron, high-chlorine, high-oxygen and high-nitrogen impurity materials in the sponge titanium by adopting sorting methods such as color sorting, winnowing, screening, magnetic separation and the like to finally obtain the high-purity sponge titanium.

The invention belongs to the technical field of titanium dioxide composite materials, and discloses a preparation method and application of modified rutile type nano titanium dioxide. According to the preparation method, water and n-hexyl alcohol are taken as a microemulsion system, titanium tetrachloride is taken as a titanium source, lauryl sodium sulfate is taken as a surfactant, and rutile type nano titanium dioxide with good dispersity and small particle size is obtained through hydrothermal reaction; then carrying out surface modification by using toluene-2, 4-diisocyanate, so as to obtain modified rutile type nano titanium dioxide; and carrying out melt blending with a copolymer of styrene and an acrylate dimethylsilane monomer by taking the modified polystyrene as a filler to obtain the polystyrene material. Isocyanate groups contained on the surface of the modified rutile type nano titanium dioxide can react with hydroxyl groups of the polystyrene copolymer, so that the mechanical property, the high temperature resistance and the ultraviolet aging resistance of the material are remarkably improved.

The invention discloses a method for preparing an impurity content test solution in titanium tetrachloride by a sulfuric acid method and a detection method, and belongs to the technical field of component detection and analysis. The preparation method and the detection method comprise the following steps: adding water into a titanium tetrachloride sample to react until a precipitate is dissolved and no thick white smoke is generated; heating and evaporating the obtained product to dryness under the condition that the temperature is not higher than 100 DEG C; then adding a sulfuric acid solution and a proper amount of water, heating under the condition that the temperature is not higher than 200 DEG C until the titanium matrix is completely dissolved to obtain a clear and transparent solution, and adding water to dilute and fix the volume to obtain a titanium tetrachloride impurity content test solution with the sulfuric acid concentration being less than 2%; and determining the impurity content in the solution by adopting ICP-MS or ICP-OES. The method disclosed by the invention is simple to operate, effectively avoids the pollution risk of external elements, and reduces the operation error, thereby greatly improving the accuracy and reliability of an analysis result.

The invention discloses a modified flocculant and equipment for rapidly removing microplastics in drinking water, and the modified flocculant is a polyaluminum sulfate-titanium tetrachloride-poly dimethyl diallyl ammonium chloride ternary composite flocculant. The pH application range value is increased by compounding with the poly dimethyl diallyl ammonium chloride, the charge neutralization bridging and netting capabilities are enhanced, and the adsorption bridging through a polymer chain is enhanced, so that the flocculant has the advantages of strong flocculation capability, quick demulsification, high settling velocity and small flocculant volume; and the water purifier has very strong purification capacity on fine suspended matters such as micro-plastics in water. Through the special flocculant adding, stirring and precipitation structure design, the removal rate of the micro-plastics is remarkably improved.

Methods and apparatus for selectively depositing a titanium material layer atop a substrate having a silicon surface and a dielectric surface are disclosed. In embodiments an apparatus is configured for forming a remote plasma reaction between titanium tetrachloride (TiCl4), hydrogen (H2) and argon (Ar) in a region between a lid heater and a showerhead of a process chamber at a first temperature of 200 to 800 degrees C.; and flowing reaction products into the process chamber to selectively form a titanium material layer upon the silicon surface of the substrate.

The invention relates to the technical field of chemical metallurgy, and discloses a method for extracting vanadium from vanadium slag through chlorination, which comprises the following steps: S1, fully mixing vanadium slag and a solid carbonizer according to a certain proportion, adding water for wetting, and briquetting; s2, performing inert atmosphere carbonization roasting on the material obtained by briquetting in the step S1; s3, cooling the carbonized slag roasted in the step S2, and then crushing and screening; s4, carrying out chlorination reaction on the screened material obtained in S3; and S5, condensing and separating gaseous volatile components generated in the chlorination reaction in the step S4 to obtain a liquid mixture of vanadium tetrachloride and titanium tetrachloride and a solid mixture of manganese chloride and ferric chloride. According to the scheme, the chlorination efficiency of vanadium and titanium can be greatly improved, and comprehensive utilization of multi-metal resources in the vanadium slag is facilitated.

The invention discloses a preparation method of ultra-high molecular weight polyethylene with consistent particle size distribution, which comprises the following steps: adding hexane into a first reaction kettle as a solvent, and adding a catalyst, raw materials ethylene and hydrogen into the first reaction kettle for prepolymerization reaction; after the pre-polymerization reaction, reaction slurry discharged from the first reaction kettle enters a second reaction kettle for polymerization reaction; and after polymerization is completed, reaction slurry discharged from the second reaction kettle is subjected to post-treatment, and a finished product is obtained. The catalyst comprises a main catalyst, a cocatalyst and an electron donor; the main catalyst is titanium tetrachloride doped with a magnesium compound; the cocatalyst is aluminum oxide loaded triethyl aluminum and / or diethyl aluminum chloride; the electron donor is a siloxane compound. According to the invention, through a prepolymerization process and catalyst optimization, high-quality ultra-high molecular weight polyethylene with super consistent particle size distribution is prepared.

The invention belongs to the field of preparation of a titanium-based material titanium tetrachloride for an integrated circuit, and relates to a method for removing trace impurities of electronic-grade chemicals, in particular to a method for preparing ultrapure titanium tetrachloride through membrane filtration and adsorption, which comprises the following steps: S1, performing ultrasonic treatment on a microfiltration membrane in ultrapure water to obtain an ultrapure microfiltration membrane; s2, flatly placing the ultra-pure micro-filtration membrane in a drying oven for drying, and removing internal moisture; and S3, enabling the titanium tetrachloride stock solution to penetrate through the dried ultra-pure micro-filtration membrane under pressure driving, so as to prepare the ultra-pure titanium tetrachloride. The method can efficiently adsorb trace metal impurities in titanium tetrachloride, and the whole filtration and adsorption process has the advantages of being simple and convenient to operate, mild in condition, high in removal efficiency, environmentally friendly and the like.

The invention discloses a method and a device for producing high-oxygen-content titanium sponge, and the method and the device are characterized in that a vanadium oxychloride solution is added into a refined titanium tetrachloride storage tank filled with the refined titanium tetrachloride solution, the vanadium oxychloride solution is used as a reducing agent and is added into a reduction reactor for reaction, and a titanium sponge target product is obtained. According to the method disclosed by the invention, titanium oxychloride can be subjected to decomposition reaction under a high-temperature condition to generate titanium tetrachloride and titanium oxide, and titanium oxychloride has unique properties in the aspects of structure, chemical reactivity, solubility and the like and has relatively good solubility in titanium tetrachloride; according to the method, the titanium oxychloride solution is selected as an oxygen producer to be mixed into the titanium tetrachloride solution, titanium oxide generated by decomposition is uniformly distributed in the sponge titanium, the oxygen element component in the sponge titanium raw material is uniform from the source, and the high-oxygen-content sponge titanium product with the uniform oxygen element component is finally produced; and the quality of raw materials for titanium ingot and titanium alloy smelting is stable and controllable.

The invention discloses a sample pretreatment method for measuring organic components in titanium tetrachloride and a measurement and analysis method, and belongs to the technical field of detection and analysis of the organic components in inorganic materials. The sample pretreatment method and the measurement analysis method comprise the following steps: carrying out liquid-liquid extraction on a titanium tetrachloride sample to be detected by adopting a combined reagent, fully reacting, standing for layering to obtain a clear, transparent, non-emulsified and clear-interface two-phase system, separating and collecting a subnatant liquid phase to obtain a solution to be detected for detecting and analyzing the organic components in titanium tetrachloride; and sending the solution to be detected to an organic analysis instrument for organic component detection and analysis by adopting a direct sample injection mode. The method provided by the invention can effectively solve the influence of deposition blockage, matrix effect, highly corrosive volatile gas of HCl and the like caused by high-concentration inorganic components such as Ti < 4 + >, Cl <->, H < + > and the like in TiCl4 on a detection instrument and a determination result.

The invention relates to the technical field of titanium tetrachloride production, in particular to a method for recovering vanadium from titanium tetrachloride vanadium removal slag and application of the method. The method for recovering the vanadium from the titanium tetrachloride vanadium-removed slag comprises the following steps: (a) carrying out acid liquor leaching on the vanadium-removed slag to obtain vanadium-containing leachate and leaching slag; (b) adding an oxidizing agent into the vanadium-containing leachate for oxidative hydrolysis and pyrolysis vanadium precipitation to obtain a precipitate and a vanadium precipitation mother solution; (c) leaching the precipitate by using alkali liquor, precipitating vanadium by using a precipitant, and roasting to obtain vanadium pentoxide; and (d) the vanadium precipitation mother liquor is subjected to extraction and reverse extraction, and a vanadium-containing solution is obtained. According to the method for recovering the vanadium from the titanium tetrachloride vanadium removal slag, corrosive gases such as HCl and Cl2 are not generated in the preparation process, a large amount of strong alkaline waste residues are not generated, the method has the advantages of being economical and environmentally friendly, the recovered vanadium pentoxide is good in quality and low in impurity content, and the total recovery rate of the vanadium is high.

The invention discloses a hierarchical porous Ti-MOR molecular sieve as well as a preparation method and application thereof, and belongs to the technical field of molecular sieves. The preparation method comprises the following steps: at room temperature, mixing a silicon source, an aluminum source, an alkali source, a seed crystal, a pore-enlarging agent and water to obtain a gel precursor for synthesizing the molecular sieve, carrying out hydrothermal crystallization and alkali treatment to obtain a hierarchical pore structure MOR molecular sieve with mesopores and macropores, carrying out acid pickling, and carrying out gas-solid phase same crystal substitution on the molecular sieve and titanium tetrachloride to finally prepare the hierarchical pore Ti-MOR molecular sieve. According to the hierarchical porous Ti-MOR molecular sieve disclosed by the invention, reactant molecules with relatively large dynamic diameters can effectively enter and exit zeolite pore channels, and the hierarchical porous Ti-MOR molecular sieve shows excellent catalytic performance in a cyclohexanone oximation reaction.

The invention discloses a preparation method and a detection method of a total carbon content test solution in titanium tetrachloride, and belongs to the technical field of component detection and analysis. The preparation method and the detection method comprise the following steps: adding water into a titanium tetrachloride sample to fully react, and heating and evaporating the obtained product to dryness at the temperature of not higher than 90 DEG C; then adding a hydrofluoric acid solution and a proper amount of water, heating and dissolving at the temperature of not higher than 80 DEG C to obtain a clear and transparent solution, and adding water to dilute and fix the volume to obtain the solution for testing the total carbon content in the titanium tetrachloride. And fully shaking up the test solution, and then immediately determining the total carbon content in the solution by adopting ICP-MS or ICP-OES (Inductively Coupled Plasma-Mass Spectrometry). The method disclosed by the invention is simple and rapid to operate, small in reagent dosage and low in test solution acidity, and can effectively solve the problems that coexisting components such as high-concentration Cl <-> and H < + > in the TiCl4 sample solution interfere a detection result and corrode an instrument.

The invention discloses a preparation method of a lithium aluminum titanium phosphate solid electrolyte nano powder material, which comprises the following steps: S1, weighing a lithium source, an aluminum source, a titanium source and a phosphorus source, and preparing a sol precursor; s2, performing microwave treatment to obtain a gelatinous intermediate; s3, carrying out annealing treatment after grinding to obtain nano titanium aluminum lithium phosphate powder; s4, placing the substrate in a plasma enhanced atomic layer deposition reaction cavity, vacuumizing, and introducing plasma activation gas; alternately pulse trimethylaluminum and titanium tetrachloride precursors, and depositing to obtain a gradient oxide intermediate layer; s5, introducing oxygen plasma to oxidize the residual precursor to form a gradient oxide coating layer; and S6, carrying out annealing treatment to obtain the lithium titanium aluminum phosphate solid electrolyte nano-powder material. According to the preparation method disclosed by the invention, the side reaction of the LATP powder and lithium metal is effectively inhibited, the interface stability and the ionic conductivity are improved, and the high-performance requirement of an all-solid-state lithium ion battery on a solid electrolyte material can be met.

The application provides a preparation method of a high-performance porous titanium-based intermetallic compound filter and relates to the technical field of filter preparation.The method comprises sequentially performing titanium raw material hydrogenation, micron-sized titanium hydride powder preparation, mixed powder preparation, mixed powder dehydrogenation alloying, micron-sized alloy powder preparation, cold isostatic forming mold preparation of the porous titanium-based intermetallic compound filter, titanium-based filter compact preparation and porous titanium-based intermetallic compound filter preparation.The application uses off-grade titanium as a matrix raw material, adds alloying elements such as aluminum and iron, combines the hydrogenation-dehydrogenation process with high-energy ball milling, and then realizes near forming of the porous titanium-based intermetallic compound filter through cold isostatic pressing and vacuum sintering.The prepared filter has high porosity, uniform pore size distribution and excellent corrosion resistance, can be used stably for a long time in a high-temperature and strong-corrosion environment, can realize efficient and high-precision purification of titanium tetrachloride, and is beneficial to industrial large-scale production and popularization.

This invention relates to the field of catalyst technology, and discloses an inorganic-organic composite catalyst and its application, as well as a method for synthesizing acryloyloxyethyltrimethylammonium chloride. The catalyst preparation method includes: reacting a hydrolyzed siloxane coupling agent with titanium tetrachloride at a pH value less than or equal to 1.5. The hydrolyzed siloxane coupling agent is R-Si(OH)3, where R is a C8-C20 alkyl group, and the molar ratio of the hydrolyzed siloxane coupling agent to titanium tetrachloride is 0.07-0.15:1. This catalyst ensures synergistic effects of solubility and active sites, and exhibits high catalytic performance even at low dosages. In the synthesis of acryloyloxyethyltrimethylammonium chloride, it effectively improves the reaction efficiency and selectivity of acryloyloxyethyltrimethylammonium chloride, further increasing the yield and purity of acryloyloxyethyltrimethylammonium chloride.