25 results about "Titanium sulfate" patented technology

The invention discloses a plant-based deodorant and a preparation method thereof, and relates to the technical field of high polymer materials. When the plant-based deodorant is prepared, beta-cyclodextrin reacts with paratoluensulfonyl chloride and then reacts with ethylenediamine, and amino modified cyclodextrin is prepared; the plant-based extract is subjected to inclusion with amino modified cyclodextrin, and a cyclodextrin inclusion compound is prepared; the preparation method comprises the following steps: reacting hydroxyethyl cellulose with methacrylic anhydride to prepare double-bond modified cellulose; carrying out hydrothermal reaction on titanium sulfate, the carboxylated multi-walled carbon nanotube, ammonium fluoride and cerous nitrate to prepare a co-doped titanium dioxide / carbon nanotube; coating the co-doped titanium dioxide / carbon nano-tubes with oleic acid to prepare modified nano-particles; and reacting the double-bond modified cellulose with the cyclodextrin inclusion compound, and then copolymerizing with the modified nanoparticles and the comonomer to obtain the plant-based deodorant. The prepared plant-based deodorant has the advantages of good deodorization effect, slow release and photocatalytic degradation.

The invention provides a preparation method and application of a plasma-assisted catalyst for preparing methanol through CO2 hydrogenation, and belongs to the field of catalysts. Raw materials adopted by the method comprise biomass, metal salt and a precipitator, the molar ratio of the biomass to the metal salt is (0.05-1): 1, the biomass is one of chitosan, hyaluronic acid and alginic acid, and the metal salt is one or more of indium nitrate, cobalt nitrate, zirconium nitrate, zirconyl nitrate, titanium sulfate and aluminum nitrate; the catalyst is subjected to nitrogen doping and / or more oxygen vacancy metal interfaces are formed through combination of coprecipitation and plasma treatment, so that the carbon dioxide adsorption and activation capacity and the overall hydrogenation efficiency of the catalyst in the process of preparing methanol through carbon dioxide hydrogenation are effectively improved.

The application relates to a low-cost surface titanium doping method of a lithium-rich positive electrode material and belongs to the field of lithium ion battery positive electrode materials. Specifically, the method comprises the following steps: placing the positive electrode material into a solution with a specific pH, then continuously stirring and adding a titanium sulfate solution into the solution; filtering the solid powder obtained after reaction for a certain time, drying, and sintering at high temperature to obtain the titanium surface-doped positive electrode material. The lithium-rich positive electrode material prepared by the method has improved first circle coulomb efficiency, discharge specific capacity and cycle performance, the process is simple, the cost is lower than that of an organic titanium source, the method is suitable for large-batch treatment of the lithium-rich positive electrode material, the use demand of the power battery can be met, and the method has a good application prospect.

This invention discloses a method for preparing a strontium titanate modified layer on the surface of zirconia based on an impregnation-heat treatment method, comprising: (1) mixing titanium sulfate, urea and water to obtain a precursor liquid A, placing zirconia ceramic in the precursor liquid A, heating to boiling and maintaining for a period of time, then removing the zirconia ceramic, and after heat treatment A, preparing a titanium dioxide film on the surface of zirconia; (2) mixing H2O2 aqueous solution, ammonia and deionized water, adding metatitanic acid and stirring to dissolve, obtaining a precursor liquid B, placing the zirconia with the titanium dioxide film in the precursor liquid B, and allowing it to stand and react for a period of time at room temperature, depositing zirconia modified with a titanium dioxide precursor layer; (3) dissolving strontium acetate, or a mixed salt composed of calcium acetate and / or magnesium acetate and strontium acetate in deionized water to obtain an impregnation treatment solution, placing the zirconia modified with the titanium dioxide precursor layer in the impregnation treatment solution, allowing it to stand and react for a period of time, and then removing it, and after heat treatment B, preparing a strontium titanate modified layer on the surface of zirconia. The strontium titanate layer prepared on the surface of zirconia ceramic in this invention is tightly attached to the zirconia substrate and has high hydrophilicity, which is conducive to the adhesion of proteins and cells in the human body. At the same time, it can release active factors such as strontium ions for a long time to promote bone formation and bone regeneration at the implantation site, ultimately enhancing the osseointegration capacity of the zirconia implant.

The present application belongs to the field of polymer material recycling, and particularly relates to a composite catalyst for PET alcoholysis and use thereof. The present application prepares a new composite catalyst by skillfully regulating the ratio of polyethylene glycol and titanium sulfate, which is suitable for the process of degrading PET with mono-alcohol and poly-alcohol. By fine regulation of the reaction conditions, high conversion rate of PET is achieved, and the highest conversion rate can reach 100%. When using ethanol as the alcoholysis agent, the yield of the main product DET can reach 95%. When using methanol as the alcoholysis agent, the yield of the main product DMT can reach 93%. When using ethylene glycol as the alcoholysis agent, the yield of the main product BHET can reach 92% at the highest, and the content of the byproduct diethylene glycol is 0. This shows that the composite catalyst of the present application can completely inhibit the occurrence of side reactions. The results show that the composite catalyst of the present application can achieve efficient and clean catalytic reaction, and avoid unnecessary side reactions.

This invention relates to the field of coagulant technology and discloses a polyaluminum ferric silicate coagulant and its preparation method, comprising the following steps: S1 coal gangue is calcined to obtain modified coal gangue; S2 modified coal gangue is acid-leached to obtain coal gangue acid leaching solution; S3 the coal gangue acid leaching solution is subjected to titanium doping, pH adjustment, polymerization, centrifugation, and aging to obtain the coagulant. The preparation method provided by this invention, after activation and modification, undergoes acid leaching, polymerization, centrifugation, aging, and drying to prepare the polyaluminum ferric silicate coagulant. By optimizing the calcination temperature, modification ratio, acid concentration, polymerization pH, polymerization temperature, and polymerization time, the coagulation performance of the coagulant can be improved, thereby increasing the wastewater pollutant removal rate.

The application discloses a kind of copper electrolyte high-efficiency self-cleaning inducing agent and synthesis method thereof, comprising the following steps: S1, titanium sulfate is mixed with sulfuric acid solution and is calcined at 150-300 degrees Celsius;S2, the material obtained by calcining in step S1 is finely ground to more than 80% of-300 mesh;S3, using the mass concentration 20%-30% sulfuric acid solution, the material after fine grinding in step S2 is soaked, then filtered, and the obtained solid material is the final copper electrolyte high-efficiency self-cleaning inducing agent.The self-cleaning inducing agent synthesized by the application can be regenerated and reused.Using the self-cleaning inducing agent prepared by the synthesis method of the application for electrolyte purification can avoid the problems of high energy consumption and easy production of toxic and harmful gases that harm the environment in traditional processes, achieving carbon reduction and clean production.The self-cleaning inducing agent prepared by the synthesis method of the application has the advantages of high purification efficiency, simple synthesis method, low cost, environmental friendliness, recyclability and the like.

A method for reducing foreign matter in titanium phosphate powder is provided. A method for manufacturing titanium phosphate powder includes: mixing a titanium sulfate solution with a phosphoric acid solution to prepare a mixture, wherein the titanium sulfate solution is obtained by contacting a raw titanium sulfate solution with activated carbon and then filtering it through a filter.

The invention provides a magnesium-based composite water treatment flocculant and a preparation method thereof, and the preparation method comprises the following steps: mixing a magnesium sulfate solution, an aluminum sulfate solution, a titanium sulfate solution, a zinc sulfate solution and a polysilicic acid solution, carrying out a copolymerization reaction, and curing after the reaction is completed to obtain the magnesium-based composite water treatment flocculant. The magnesium-based composite water treatment flocculant is a novel composite inorganic polymeric flocculant, the composite effect of multiple metal ions such as magnesium, aluminum, titanium and zinc and polysilicic acid is fused, chemical bonds such as Al-O-Si, Ti-O-Si, Zn-O-Si and Mg-O-Si are formed through a copolymerization method, the multiple metal ions are tightly combined with silicic acid, and the water treatment effect is improved. The composite flocculant has the advantages that the stability and adsorption capacity of the flocculant are enhanced, a pore structure possibly appears on the surface of the composite flocculant, the specific surface area is increased, pollutant adsorption and bridging effects are also facilitated, and the removal rate of pollutants (such as ammonia nitrogen, humic acid and the like) in water can be obviously improved.

The invention discloses a wide-temperature full-working-condition Mn / FeTi composite denitration catalyst as well as a preparation method and application thereof, and belongs to the technical field of flue gas denitration. The preparation method comprises the following steps: mixing ferrous sulfate heptahydrate, ferric chloride hexahydrate, titanium sulfate and distilled water, dropwise adding hydrochloric acid and ammonia water to adjust the pH value, stirring, aging, centrifugally washing the obtained precipitate, drying, and roasting to obtain the FeTi catalyst; and mixing and stirring manganese acetate tetrahydrate, distilled water and the FeTi catalyst, drying and roasting to obtain the Mn / FeTi catalyst. The MnO2 species used in the invention promotes strong interaction among the components of the catalyst and improves the activity of the catalyst at a low temperature section, the Ti < 4 + > ions enhance the structural stability of the catalyst and significantly improve the stability and poisoning resistance of the catalyst, and the prepared Mn / FeTi catalyst has high thermal stability, excellent catalytic performance and excellent sulfur resistance.

This invention provides a method for preparing bismuth titanate nanoparticles using molten salt assistance. Sodium bismuthate dihydrate, sodium sulfite, titanium sulfate, and sodium nitrate are mixed and ground uniformly to obtain a solid mixture. The solid mixture is then heated at 350°C to melt the sodium nitrate, creating an ion-molten liquid environment. Under this environment, a redox reaction between sodium bismuthate dihydrate and sodium sulfite generates the transition product bismuth oxysulfate, producing sodium hydroxide and creating a self-generated alkaline condition. Simultaneously, under this self-generated alkaline condition, bismuth oxysulfate reacts with titanium sulfate to form bismuth titanate. The reaction product is then post-processed to obtain Bi... 24 Ti2O 40 Nanoparticles. The advantages of this invention are: a synthesis strategy based on an ion-molten liquid environment, accelerated reactant diffusion, and improved chemical reaction efficiency to prepare Bi. 24 Ti2O 40 Nanopowders are easy to prepare, convenient to operate, have a mild reaction, and are low in cost, making them suitable for industrial production.

The application relates to the fine chemical industry, and discloses a supported titanium sulfate catalyst, a preparation method thereof and application of the supported titanium sulfate catalyst in a methyl methacrylate synthesis reaction. The supported titanium sulfate catalyst is composed of illite mesoporous composite material and titanium sulfate loaded on the illite mesoporous composite material; the illite mesoporous composite material has a one-dimensional and two-dimensional hexagonal pore dual pore distribution structure, a first most probable pore diameter of 2-7 nm, a second most probable pore diameter of 20-40 nm, a specific surface area of 150-600 m 2 / g, and a pore volume of 0.7-1.6 cm 3 / g; and the content of the illite mesoporous composite material is 60-90% by weight, and the content of the titanium sulfate is 10-40% by weight, based on the total weight of the supported titanium sulfate catalyst. The supported titanium sulfate catalyst is used in a methacrylization reaction, and higher methacrylic acid conversion rate and methyl methacrylate selectivity can be obtained.

The invention provides a preparation method of uniform titanium-doped iron phosphate based on titanium-hydrogen peroxide complexing slow release, and relates to the technical field of lithium ion battery positive electrode material preparation, and the preparation method comprises the following steps: 1, a synthesis stage: pure water is used for bottoming, an iron source and a phosphorus source are mixed, hydrogen peroxide is added for oxidation, and a basic ammonium iron phosphate precursor is generated through a reaction; 2, a conversion stage: adding water into the basic ammonium iron phosphate precursor for slurrying, performing crystal transfer in a high-temperature acid environment to obtain iron phosphate dihydrate, adding a titanium slow-release agent in a crystal growth stage, and performing suction filtration and washing to obtain titanium-containing iron phosphate dihydrate; 3, post-treatment: washing and calcining the titanium-containing iron phosphate dihydrate to obtain titanium-doped iron phosphate; the invention provides a process for preparing titanium-doped iron phosphate by taking a titanium slow-release agent as a titanium source, a titanium sulfate solution and hydrogen peroxide are combined to form a relatively stable complex to replace a traditional titanium sulfate source, and the crystallinity and the grain size of iron phosphate crystals prepared by the process are not obviously influenced by titanium-doped ions.

The application provides application of high-molecular-weight cationic polyacrylamide in titanium liquid sedimentation process in a sulfuric acid method titanium white process; the number average molecular weight of the high-molecular-weight cationic polyacrylamide is greater than or equal to 10 million.The application also provides a flocculation sedimentation method for improving the titanium liquid sedimentation effect in the sulfuric acid method titanium white process.The application applies cationic polyacrylamide to the titanium liquid sedimentation process in the sulfuric acid method titanium white, and the flocculant preparation time can be shortened by more than half compared with the previous time.In the flocculation process, the high cationic degree makes the ion concentration of the dissociated ions higher, the adsorption effect of the charges stronger, especially the adsorption effect on the silicic acid component contained in the titanium liquid stronger, so that the flocculation sedimentation process is carried out more quickly and completely.The application adopts emulsion-type high-ionic-strength high-molecular-weight cationic polyacrylamide, compared with the traditional flocculant product, can effectively improve the titanium liquid flocculation sedimentation effect in the sulfuric acid method titanium white, and comprehensively reduce the production cost.

The invention discloses a polymeric titanium coagulant based on a negative electrode material of a waste lithium titanate battery, a preparation method and application, and the process sequentially comprises the following steps: selectively extracting lithium from dilute sulfuric acid, and carrying out solid-liquid separation to obtain titanium-rich filter residues; corroding for 3-5 hours at the temperature of 60-85 DEG C by using a sulfuric acid-hydrogen peroxide mixed solution, and converting solid-phase titanium into a titanium peroxysulfate solution; and directly dropwise adding alkali liquor for in-situ polymerization without calcining or extracting, controlling OH / Ti to be 1.0-2.0, and aging to obtain the polymerized titanium coagulant. Titanium is kept in a liquid phase in the whole process, high-temperature calcination and organic solvent links are omitted, the energy consumption and the raw material cost are remarkably reduced, the product is used for water treatment, the turbidity, COD and phosphate removal effect is equivalent to that of a commercial pure titanium coagulant, and the purpose of treating pollution with waste is achieved.

The invention discloses a waste acid-based titanium concentrate low-concentration acidolysis method, which comprises the following steps: mixing concentrated sulfuric acid, titanium concentrate and iron powder, adding waste acid under the protection of inert gas, carrying out acidolysis to obtain a titanium concentrate acidolysis solid-phase substance, and leaching to obtain an acidolysis titanium solution. According to the method, a method of coupling low-concentration acidolysis of the titanium concentrate and reduction of the acidolysis titanium solution is adopted, the low-concentration acidolysis efficiency of the titanium concentrate is improved, meanwhile, the production period is greatly shortened, and the stability of the production process is improved; according to the method, the utilization level of titanium resources and sulfur resources in the waste acid can be improved, and the titanium dioxide production efficiency of the sulfuric acid method can also be improved. The method is simple in process, low in cost and wide in market popularization prospect.

The invention discloses a flame-retardant silk fabric with a PEI-GA / Me composite coating, the flame-retardant silk fabric comprises a silk fabric and a coating on the surface of the silk fabric, and the coating is formed after gallic acid reacts with polyethyleneimine and polyvalent metal salt; the multivalent metal salt is selected from one or more of ferrous sulfate, ferric sulfate, aluminum sulfate and titanium sulfate. According to the flame-retardant silk fabric with the PEI-GA / Me composite coating, a self-crosslinking network of PEI and GA is formed on the surface of the fabric and is chelated with metal ions (Me), so that the environmental protection problem of a flame retardant and the durability problem of a natural molecular flame retardant are solved, and an antibacterial function is provided for the fabric while the flame-retardant property is met.

This invention discloses a titanium-modified attapulgite catalyst suitable for potassium lysine systems, its preparation method, and its application. The method involves adding attapulgite to a titanium sulfate solution, followed by ultrasonication and a single water bath heating to obtain a mixed solution. The pH is adjusted to 10.0±0.5, followed by a second water bath heating and aging to obtain a coprecipitate. This coprecipitate is then washed, dried, ground, and calcined to obtain the final product. This method is simple, low-cost, and solves the problems of existing CO2 desorption catalysts, which are mostly applicable to alkanolamine systems, unsuitable for amino acid salts, and suffer from complex preparation, poor stability, or easy degradation in solution. The prepared Ti-ATP catalyst exhibits highly efficient and stable catalytic desorption performance in potassium lysine systems.

The invention discloses a preparation process for coating the surface of titanium dioxide with aluminum sulfate, and relates to the field of titanium dioxide production processes. When the titanium dioxide coated with the aluminum sulfate on the surface is prepared, titanium sulfate is prepared into the titanium dioxide, and the titanium dioxide coated with the aluminum sulfate on the surface is prepared after the titanium dioxide, the aluminum sulfate and alkali liquor react. The surface of the prepared titanium dioxide is coated with aluminum sulfate, so that the titanium dioxide has relatively low oil absorption and good weather resistance.

The application provides a method for preparing lithium manganese iron phosphate from iron hydroxyphosphate, wherein ferrous sulfate is purified to form a ferrous sulfate solution, hydrogen peroxide, phosphoric acid, ammonium dihydrogen phosphate solution, titanium sulfate and ammonia are sequentially added into the solution to form a mixed slurry after reaction, the mixed slurry is heated to a certain temperature and kept for a certain time, and then water washing and pressure filtration are performed to form iron hydroxyphosphate precursors with different iron-phosphorus ratios; the iron hydroxyphosphate precursors are subjected to flash drying and high-temperature sintering and crushing to obtain iron hydroxyphosphate precursors with different iron-phosphorus ratios and different specific surface areas; the iron hydroxyphosphate precursors are crushed and mixed to obtain iron hydroxyphosphate finished products; high-iron-phosphorus-ratio iron hydroxyphosphate and low-iron-phosphorus-ratio iron hydroxyphosphate are mixed according to a certain proportion, and lithium source, manganese source and phosphorus source are proportioned according to a certain proportion, and carbon source and additives are added to form a mixture; and after processes such as ball milling, sand milling, spray drying, sintering, crushing, screening, batching and packaging are performed on the mixture, lithium manganese iron phosphate finished products are obtained.

The application relates to a preparation method of crystalline titanium sulfate, and steps are as follows: 2-2.5 parts of 90% concentrated sulfuric acid are taken, 1 part of 98% titanium white powder or 2 parts of 56% hydrated titanium dioxide is slowly added, and an exothermic reaction is carried out; when the temperature reaches 90-100 DEG C or 140-145 DEG C, the reaction is continued for 48 hours; after filtration, 1 part of 75%-80% sulfuric acid is slowly added for acidification reaction to 120-125 DEG C, and stirring is carried out during the adding, until a viscous reaction product is obtained; cooling and crystallization are carried out, and titanium sulfate crystals are obtained. The application solves the problems of long dissolving time of titanium sulfate and easy hydrolysis, and the problems of high cost, complex process and low product purity in direct preparation of titanium sulfate.

The invention discloses a method for preparing ethyl levulinate through a microwave-assisted two-phase solvent system, and belongs to the technical field of ethyl levulinate preparation. The method comprises the following steps: putting a biomass raw material into a two-phase solvent system, and preparing ethyl levulinate by using a microwave-assisted catalyst, the catalyst is any one of Ti (SO4) 2 or a mixture of Ti (SO4) 2 and H2SO4; the solvent is a mixture of ethanol and gamma-valerolactone. Titanium sulfate is selected as a catalyst and is used for converting a biomass raw material solvent and successfully synthesizing ethyl levulinate. The esterification reaction path is not recorded in literatures so far, and the unique application potential of titanium sulfate in the field is shown.

This invention discloses a method for preparing a highly efficient hydrogenation catalyst, comprising the following steps: preparing silicates using tetrapropylammonium hydroxide as a template agent and tetraethyl orthosilicate as a silicon source, followed by alkali treatment to obtain hollow silicate materials; treating the hollow silicate support with 3-aminopropyltriethoxysilane to obtain functionalized hollow silicate materials; loading cerium onto the functionalized hollow silicate material as a support, then adding it to a mixed metal salt solution of nickel nitrate hexahydrate and titanium sulfate for co-precipitation treatment to obtain a catalyst precursor; mixing ethanol and tetrahydronaphthalene, then adding sodium borohydride and stirring until dissolved to obtain a mixed solvent, adding the catalyst precursor, and transferring the mixture to a high-pressure reactor for sealing treatment to obtain the catalyst. This invention uses self-made hollow silicate materials as a support, sequentially loading cerium, nickel, and titanium, resulting in a catalyst with a large specific surface area and high catalytic activity, effectively improving the purity and yield of γ-butyrolactone in its synthesis.

The application discloses a preparation method of a cationic arabic gum coagulant modified by titanium salt, and comprises the following steps: (1) dissolving arabic gum in a NaOH solution, slowly stirring for 2-3 hours at room temperature until uniform; (2) adding an isopropyl alcohol solution containing 3-chloro-2-hydroxypropyl trimethyl ammonium chloride into the above solution, slowly stirring for 2-3 hours until swelling; (3) placing the mixed solution of step (2) into a microwave, taking out the modified cationic arabic gum after reaction, and repeatedly immersing and cleaning the cationic arabic gum in an ethanol aqueous solution and distilled water until the conductivity is less than 10; (4) placing the cationic arabic gum of step (3) into an oven, and obtaining the cationic arabic gum in powder form after drying; and (5) adding the cationic arabic gum into a titanium sulfate solution according to the mass ratio of titanium sulfate to the cationic arabic gum being 20-30:1, stirring for 3-4 hours, and obtaining the cationic arabic gum coagulant modified by titanium salt with high molecular weight.

The invention provides a novel electrolytic copper foil and a preparation method thereof, and belongs to the technical field of electrolytic copper foil surface treatment.The preparation method comprises the following steps that an electrolytic raw foil is soaked in a pretreatment solution for low-profile treatment, and a pretreated copper foil is obtained; taking the pretreated copper foil as a cathode, placing the pretreated copper foil in a roughening solution for electroplating, and carrying out roughening treatment to obtain a roughened copper foil; the roughening liquid comprises a copper source, sulfuric acid, an additive and water, and the additive comprises at least one of sodium tungstate, sodium molybdate, titanium sulfate and ferrous sulfide; the coarsening current density is 10-30 A / dm < 2 >; and the roughened copper foil is sequentially subjected to curing treatment, ashing treatment, passivation treatment, coupling agent coating and drying, and the novel electrolytic copper foil is obtained. Through combination of low-profile treatment and roughening treatment, on one hand, the surface roughness of the copper foil can be reduced, and on the other hand, the specific surface area of the copper foil is increased through roughening additive treatment, so that the peel strength is improved.