68 results about "Titanium sulfate" patented technology

The invention provides a low-cost preparation method of high-performance titanium-doped iron phosphate, and relates to the technical field of batteries. The low-cost preparation method comprises the following steps: S1, respectively preparing a phosphoric acid solution, a hydrogen peroxide solution, a phosphorus salt solution and a ferrite solution; s2, adding titanium sulfate into the ferrite solution to obtain an iron-titanium mixed solution; s3, directly adding ammonia water and a hydrogen peroxide solution into the phosphorus salt solution to obtain a phosphorus-oxygen mixed solution; s4, the iron-titanium mixed solution is heated, the phosphorus-oxygen mixed solution is put into the iron-titanium mixed solution, and slurry A is obtained; s5, obtaining a filter cake A; s6, adding pure water and a phosphoric acid solution, and heating to obtain slurry B; s7, obtaining anhydrous iron phosphate; the synthesized iron phosphate is compact and compact in morphology, internal pore channels of primary particles are still rich, the compaction density of the lithium iron phosphate material obtained through grinding and sintering reaches 2.613 g / cc, the 0.1 C discharge capacity can still reach 156.35 mAh / g, and the 1C discharge capacity reaches 131.47 mAh / g.

The invention belongs to the technical field of pyridone ethanolamine salt synthesis, and discloses an environment-friendly pyridone ethanolamine salt preparation process which comprises the following preparation steps: enabling isononanoyl chloride and 3, 3-methyl dimethacrylate to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester, and enabling the 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester to react under the catalysis of a solid acid catalyst to prepare 3, 7, 9, 9-tetramethyl-2-decene-5-keto acid methyl ester. The preparation method of the solid acid catalyst comprises the following steps: S1, taking water as a solvent, adding 14-16 parts by weight of zirconium oxychloride, 1-3 parts by weight of titanium sulfate, 0.1-0.5 part by weight of chloroplatinic acid and 0.05-0.4 part by weight of cerium chloride, adjusting the pH value to 10-11, and aging to obtain a precipitate; s2, roasting the precipitate obtained in the step S1 in an air atmosphere at 500-600 DEG C to obtain a solid acid catalyst; the method has the advantages that the catalyst is easy to recycle, and the reusability is high.

The invention belongs to the technical field of copper foils, and particularly relates to a production process of a copper foil and the copper foils, and the production process of the copper foils comprises the following steps: reacting a copper raw material with sulfuric acid to generate a copper sulfate solution; the copper sulfate solution is electrolyzed, and crude foil is obtained; the raw foil is subjected to surface treatment, the surface treatment comprises a roughening process, in the roughening process, a roughening solution comprises an additive C and an additive D, the additive C comprises one or a mixed solution of two or more of sodium tungstate, sodium molybdate, ammonium molybdate, tin sulfate and titanium sulfate, and the concentration of the additive C is 10-60 ppm; the additive D comprises high-molecular organic matters such as hydroxyethyl cellulose and ethylene glycol, and the concentration of the additive D is 30-50 ppm; and carrying out target temperature treatment on the crude foil subjected to the surface treatment to obtain the copper foil. Through the copper foil production process in the scheme, the peeling strength attenuation rate of the copper foil after high-temperature treatment can be reduced.

The invention relates to a waste incineration fly ash harmless recycling method based on low temperature, and belongs to the technical field of fly ash harmless treatment.The fly ash harmless recycling method comprises the steps that fly ash, auxiliary materials and a catalyst are evenly mixed, and a mixture is obtained; the auxiliary material comprises phosphate; the catalyst is obtained by reacting a mixed system containing titanyl sulfate, ammonium metavanadate, sodium acetate and sodium isethionate; the mass ratio of titanyl sulfate to ammonium metavanadate to sodium acetate to sodium isethionate is 100: (0.5-3): (5-10): (3-6); and the mixture is subjected to mechanical alloying treatment, extrusion forming granulation and heat treatment, and a harmless recycling product is obtained. By means of the harmless recycling method for the fly ash, fixation of heavy metal and decomposition of dioxin at the low temperature can be achieved, the harmless recycling treatment process is high in efficiency and low in energy consumption, and the obtained harmless recycling product is lasting in heavy metal stabilizing effect, low in dioxin content and low in heavy metal leaching concentration.

The invention belongs to the technical field of thallium-containing wastewater treatment, and discloses potassium modified TiO2 and application thereof in thallium-containing wastewater treatment. Titanium sulfate is used as a titanium source, the potassium modified TiO2 is obtained through a potassium hydroxide precipitation method, the adsorption capacity of the potassium modified TiO2 reaches 990mg / g, the highest removal rate of the potassium modified TiO2 to Tl (I) reaches 99.2% or above under the condition that the pH value is 4-12, and the concentration of the Tl (I) can be effectively reduced to 0.1 microgram / L or below. The invention provides a modified titanium dioxide material with high adsorption capacity for treatment of thallium-containing wastewater.

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.

A carbon-doped sodium iron aluminum titanium sulfate positive electrode material and a preparation method therefor. The carbon-doped sodium iron aluminum titanium sulfate positive electrode material comprises a carbon material and sodium iron aluminum titanium sulfate modified by the carbon material in situ. The general formula of sodium iron aluminum titanium sulfate is NaxFeyAlzTi1-y-z(SO4)m. Compared with single-ion doping, aluminum-titanium double-ion doping and the in-situ modification with the carbon material can produce a synergistic effect, thereby comprehensively improving the performance of the positive electrode material. Compared with the operations of directly ball milling raw materials and then calcining same, the preparation method, in which spray drying is mainly used for preparing a precursor, achieves more uniform distribution of various elements, is beneficial for obtaining a spherical carbon-doped sodium iron aluminum titanium sulfate positive electrode material, and can further improve the performance of the positive electrode material. The preparation method is simple in terms of technological process and easy to industrialize.

The invention discloses a magnetic flocculant and application thereof in a cutting fluid wastewater treatment process, and relates to the technical field of sewage treatment. The preparation method of the magnetic flocculant comprises the following steps: impregnating modified magnetic nanoparticles in chitosan-poly-silicon ferrotitanium sulfate, carrying out ultrasonic treatment for 30-40 minutes, sucking out by using a high-strength magnet, drying at 50-60 DEG C, and repeating the steps of impregnating, sucking out and drying for 3-5 times to obtain the magnetic flocculant. The prepared flocculant is combined with an existing magnetic separation device, suspended particles and colloidal substances in the waste liquid are gathered to form flocs, meanwhile, organic matter in the waste liquid is adsorbed, and the purpose of efficiently and rapidly treating the grinding waste liquid is achieved through the magnetic attraction effect.

The invention relates to the technical field of electro-catalytic material synthesis, in particular to a preparation method of a nano TiO2 (at) AC (at) GPs electro-catalytic anode material, which comprises the following steps: firstly, depositing an amorphous carbon layer AC on the surface of graphite flake GPs by adopting a chemical vapor deposition method to obtain an AC (at) GPs composite material; cTAB is dissolved in a methanol / deionized water mixed solution and stirred evenly to obtain a solution A, a titanium sulfate solution is added into the solution A to obtain a precursor solution B, the precursor solution B and the AC (at) GPs composite material are mixed and then subjected to a hydrothermal reaction, after the reaction, a sample is washed, dried and roasted, and the nano TiO2 (at) AC (at) GPs electrocatalytic anode material is obtained. The preparation process is simple and efficient, the obtained nano TiO2 (at) AC (at) GPs electro-catalytic anode material has excellent electro-catalytic activity and cycling stability, the problems that a traditional graphite anode material is poor in electro-catalytic performance and the like are solved, and the nano TiO2 (at) AC (at) GPs electro-catalytic anode material has wide industrial application prospects.

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.

The present invention discloses a method for making a dehumidification wheel, comprising the following steps: (1) glass fiber: glass fiber cotton: water glass solution: basic aluminum chloride solution: diatomaceous earth: acrylic resin is mixed and stirred to form a mixture; (2) the mixture is placed in an inverted honeycomb mold, compacted with a perforated plate to obtain a semi-dried honeycomb body; (3) hot air drying; (4) water glass solution impregnation; (5) repeating steps (3) and (4); (6) immersion in a sulfuric acid solution containing titanium sulfate; (7) washing with water and drying with hot air to constant weight; (8) removing organic matter contained; (9) cutting and assembling into a dehumidification wheel. The cell density of the honeycomb body made by the present invention is greater than that of the honeycomb body rolled from glass fiber paper, and can absorb moisture more effectively. The secondary water glass solution impregnation carries more dehumidification medium than the traditional method, thereby improving the dehumidification capacity per unit volume of the honeycomb.

The present invention relates to the technical field of disinfection materials, and particularly relates to a rare earth composite photocatalyst disinfection material and its preparation process. The preparation process includes the following steps: preparing rare earth dopants; preparing biological rare earth dopants; preparing protonated cellulose composite graphite phase carbon nitride powder; preparing rare earth composite photocatalyst disinfection material. In the present invention, zinc acetate, rare earth ion solution and titanium sulfate are made into a gel, and the gel is calcined to obtain rare earth dopants. The rare earth ions in the rare earth dopants can serve as a transfer medium to promote the separation and transmission of photo-generated carriers. In the structure of the rare earth dopants, the rare earth ions penetrate through it, enabling photo-generated electrons to move directionally in the rare earth dopants, thereby improving the photocatalytic efficiency and enhancing the disinfection ability of the rare earth composite photocatalyst disinfection material by improving the photocatalytic efficiency.

The invention discloses a preparation method of a porous carbon adsorbent for treating antibiotics in water, and belongs to the technical field of environmental protection. Comprising the following steps: (1) adding a leather collagen fiber in the tanning field as a carbon source into deionized water to form a mixed solution, adding titanium sulfate under an acidic condition for tanning, obtaining a precipitate through a high-temperature water bath, washing with deionized water, and freeze-drying to obtain a porous carbon adsorbent precursor; (2) performing high-temperature carbonization on the precursor obtained in the step (1) in an inert atmosphere to obtain a compound of the titanium oxide and the carbon material; and (3) etching the compound in the step (2) with hydrofluoric acid, washing with deionized water, and drying to obtain the porous carbon adsorbent. The raw materials are wide in source, the preparation method is simple, and antibiotics in water can be efficiently adsorbed.

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 invention discloses a preparation method of a high-efficiency hydrogenation catalyst, which comprises the following steps: preparing silicate by using tetrapropylammonium hydroxide as a template agent and tetraethoxysilane as a silicon source, and carrying out alkali treatment to obtain a hollow silicate material; 3-aminopropyltriethoxysilane is adopted to treat the hollow silicate carrier, and a functionalized hollow silicate material is obtained; the preparation method comprises the following steps: loading cerium by taking a functionalized hollow silicate material as a carrier, and then adding into a mixed metal salt solution of nickel nitrate hexahydrate and titanium sulfate for coprecipitation treatment to obtain a catalyst precursor; mixing ethanol and tetrahydronaphthalene, adding sodium borohydride, stirring until the sodium borohydride is dissolved to obtain a mixed solvent, adding the catalyst precursor, transferring the mixed solution into a high-pressure kettle, and sealing to obtain the catalyst. The self-made hollow silicate material is adopted as the carrier, cerium, nickel and titanium are loaded in sequence, the prepared catalyst is large in specific surface area and high in catalytic activity, and the purity and yield of gamma-butyrolactone are effectively improved when the catalyst is used in gamma-butyrolactone synthesis.

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 present invention belongs to the technical field of secondary battery materials. More specifically, it relates to a synthesis method of a solid electrolyte and carbon composite-coated lithium-rich manganese-based cathode material. The method of the present invention includes: first, mixing anhydrous ethanol and glycerol evenly, then adding aluminum nitrate and conductive carbon, ultrasonically dispersing evenly, and then adding the lithium-rich manganese-based material, heating and stirring to concentrate to obtain a concentrated material; after calcining the concentrated material, cooling to obtain a calcined material; ultrasonically reacting the calcined material with a strong base solution, washing with water, and drying to obtain a carbon-coated lithium-rich manganese-based material; mixing and dispersing the carbon-coated lithium-rich manganese-based material and water; dissolving lithium hydroxide in water to obtain a lithium hydroxide solution; adding titanium sulfate, lanthanum nitrate, and chromium sulfate to water to dissolve to obtain a mixed solution; adding the mixed solution to the main material suspension, after mixing, adding the lithium hydroxide solution, reacting, filtering, drying, and then performing a high-temperature reaction, discharging to obtain the solid electrolyte and carbon composite-coated lithium-rich manganese-based cathode material.

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.

Provided is a means capable of reducing impurities in titanium phosphate powder. This method for producing titanium phosphate powder comprises bringing a crude titanium sulfate solution and activated carbon into contact, filtering the product with a filter, and mixing the resulting titanium sulfate solution with a phosphoric acid solution to prepare a mixed solution.

A hydrodesulfurization, deoxidation and hydrogen cyanide removal multifunctional purification catalyst applicable to ultra-low emission and comprehensive use of industrial tail gas, and the use thereof. Said catalyst uses activated carbon as a support, and is loaded with copper sulfate and titanium sulfate, the mass percentage of copper sulfate relative to the mass of the support being 5-15%, and the mass percentage of titanium sulfate relative to the mass of the support being 3-12%. Said catalyst is applicable to multifunctional purification of COS, CS2 and SO2 in low-hydrogen high-oxygen industrial tail gas such as blast furnace gas, carbon black tail gas and calcium carbide tail gas via hydrogenation conversion, deoxidization and hydrogen cyanide removal, solves the problem that traditional alumina-based cobalt-molybdenum, nickel-molybdenum or iron-molybdenum catalysts are prone to deactivation and have poor hydrogenation activity in said atmospheres, and exhibits low side reactions of carbon monoxide shift, thus facilitating source treatment and ultra-low emission of the described industrial tail gas while facilitating comprehensive use of subsequently recovered CO and hydrogen.

The present invention provides a titanium-doped hollow flower-spherical nano-alumina adsorbent, a preparation method and application thereof, and belongs to the technical field of adsorbent preparation. The present invention utilizes titanium sulfate as a titanium source, aluminum nitrate nonahydrate as an aluminum source, and urea as a precipitant, and obtains the titanium-doped hollow flower-spherical nano-alumina adsorbent through a hydrothermal co-precipitation method and high-temperature calcination. The interaction between the titanium-doped hollow flower-spherical nano-alumina adsorbent and PCl3 can efficiently remove trace amounts of PCl3, and the adsorbent can be recycled and reused multiple times after regeneration, thereby having good practical value.

The application belongs to the technical field of thallium-containing wastewater treatment, and discloses a potassium-modified TiO2 and application of the potassium-modified TiO2 in thallium-containing wastewater treatment. The potassium-modified TiO2 is obtained by using titanium sulfate as a titanium source and a potassium hydroxide precipitation method, and the adsorption capacity of the potassium-modified TiO2 reaches 990 mg / g. The potassium-modified TiO2 can remove Tl(I) by more than 99.2% under the condition of pH 4-12, and can effectively reduce the concentration of Tl(I) to below 0.1 μg / L. The application provides a modified titanium dioxide material with high adsorption capacity for the treatment of thallium-containing wastewater.

The present invention relates to a preparation method of a lithium iron manganese phosphate precursor and lithium iron manganese phosphate, and the preparation method of the lithium iron manganese phosphate precursor comprises the following steps: 1) preparing ferrous phosphate from ferrous sulfate produced as a byproduct of titanium dioxide in a sulfuric acid process, separating a mother liquor, and obtaining a first solution after the mother liquor is subjected to membrane treatment and MVR concentration treatment; 2) removing impurities from ferrous sulfate produced as a byproduct of titanium dioxide in a sulfuric acid process, obtaining a second solution; 3) mixing the first solution and the second solution to obtain a mixed salt solution; 4) simultaneously dropping the mixed salt solution and the ammonium phosphate salt solution into a reactor under an inert atmosphere to react, controlling the pH value of the solution in the reactor to 5-6, and controlling the reaction temperature to 50-80°C, performing solid-liquid separation after the reaction, and obtaining ammonium iron manganese phosphate. The present invention combines the ferrous mother liquor of titanium dioxide in a sulfuric acid process to prepare an iron phosphate process, and utilizes the comprehensive utilization of the iron phosphate reaction mother liquor to prepare ammonium iron manganese phosphate, with a high degree of resource utilization, and realizes the utilization of a large amount of Mn elements in the iron phosphate reaction mother liquor.

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.

Described herein is a flame retardant-stabilizer mixture including as a component A, 5% to 95% by weight of aluminium diethylphosphinate (DEPAL) and / or zinc diethylphosphinate (DEPZN); as a component B, 5% to 95% by weight of titanium phosphinates and / or titanyl phosphinates of the formula (I) (DEPTI) in which x is a number from 0 to 1.9; as a component C, 0% to 10% by weight of aluminium phosphite or zinc phosphite of the formula (II), [HP(═O)O2]2−Zn2+, and formula (III), [HP(═O)O2]2−3Al3+2; as a component D, 0% to 30% by weight of a nitrogen-containing synergist and / or of a phosphorus-containing and / or nitrogen-containing flame retardant; as a component E, 0% to 70% by weight of a filler and reinforcer; as a component F, 0% to 3% by weight of an organic phosphonite and / or an organic phosphite and / or mixtures with phenolic antioxidants; and as a component G, 0% to 3% by weight of an ester and / or salt of long-chain aliphatic carboxylic acids (fatty acids) typically having chain lengths of C14 to C40. The sum total of components A-G is 100% by weight.

The invention discloses a titanium composite catalyst and a preparation method and application thereof, and belongs to the technical field of composite catalysts.The preparation method comprises the steps that a catalyst carrier and a crucible containing melamine are transferred into a muffle furnace to be heated, a semi-finished product catalyst loaded with carbon nitride nanosheets is obtained, titanyl sulfate and deionized water are added into a reaction kettle to be stirred and dissolved, and the titanium composite catalyst is obtained; adding absolute ethyl alcohol and a semi-finished product catalyst, carrying out vacuum impregnation after ultrasonic dispersion, dropwise adding ammonia water, and carrying out a heat preservation reaction to obtain a titanium composite catalyst; carbon nitride has excellent electron conduction performance and chemical stability, and can promote cracking and conversion of heavy oil molecules; metatitanic acid provides more acidic sites and catalytic activity centers, and is helpful for accelerating the cracking reaction of heavy oil molecules; the catalyst carrier is used as a support and a dispersant of the active components, and the combination of the three can significantly improve the conversion rate of heavy oil catalytic cracking and improve the quality and yield of catalytic cracking products.

The present invention discloses a modification method of a titanium-based lithium ion sieve, using a titanium source and a lithium source as basic raw materials, doping a modifier, wherein the modifier is selected from any one of sulfur powder, thiourea, urea, ammonium sulfide, hexamethylenetetramine, and selenium powder; a modified lithium metatitanate precursor is prepared by solid phase synthesis, sol-gel synthesis, or hydrothermal synthesis. The titanium source is selected from any one of titanium dioxide, industrial metatitanic acid, tetrabutyl titanate, titanium tetrachloride, isopropyl titanate, titanium sulfate, and titanium nitrate. The lithium source is selected from any one of lithium hydroxide, lithium chloride, lithium carbonate, lithium acetate dihydrate, lithium oxalate, lithium fluoride, lithium bromide, lithium nitrate, and lithium sulfate. The modification method of the present invention further improves the adsorption capacity and adsorption rate of the titanium-based lithium ion sieve by doping with non-metallic ions nitrogen, sulfur, or selenium.

The present invention relates to the field of photocatalysis technology and provides a method for preparing a TiO2-Bi2O(OH)2SO4 nanocomposite through a synergistic reaction. Sodium bismuthate dihydrate, sodium sulfite, and titanium sulfate are added to a hydrothermal reaction kettle containing distilled water to obtain a solid-liquid mixture. Under hydrothermal conditions, the TiO2-Bi2O(OH)2SO4 nanocomposite is prepared through the synergistic effect of the hydrolysis and crystallization reaction of titanium sulfate and the heterogeneous interface in-situ redox reaction of sodium bismuthate dihydrate. The advantages of the present invention are as follows: Based on the synthesis strategy of the synergistic effect of the hydrolysis and crystallization reaction and the heterogeneous interface in-situ redox reaction, the TiO2-Bi2O(OH)2SO4 nanocomposite is prepared, and the preparation steps are simple and the operation is convenient, and the composite effect between TiO2 and Bi2O(OH)2SO4 is good.