51 results about "Stannate" patented technology

The invention provides a heat insulation composite material which is prepared from the following raw materials in parts by weight: 100 parts of waterborne polyurethane, 10-20 parts of ammonium polyphosphate, 3-8 parts of zinc stannate, 5-15 parts of zinc borate, 5-10 parts of silicon carbide nanowires, 10-20 parts of silicon dioxide aerogel microspheres, 3-5 parts of nano montmorillonite and 2-5 parts of a toughening agent. According to the heat-insulating composite material disclosed by the invention, the balance of environmental friendliness, ultrahigh-temperature stability, low heat conductivity and flexibility is realized through the synergistic effect of multiple components.

The invention discloses a method for removing arsenic and recovering copper and zinc from scrap copper smelting smoke dust, which comprises the following steps: carrying out first-stage acid leaching on the scrap copper smelting smoke dust to obtain first-stage leaching liquid and first-stage leaching slag; second-stage acid leaching is conducted on the first-stage leaching residues, second-stage leaching liquid and second-stage leaching residues are obtained, and the second-stage leaching liquid is returned to the first-stage acid leaching; zinc oxide is added into the first-section leaching solution to adjust the first-section leaching solution to a preset pH value, then iron powder is added to replace copper in the mixed leaching solution, and copper sponge and a replaced solution are obtained; zinc oxide is added into the replaced liquid to adjust the replaced liquid to a preset pH value, then ferrous sulfate heptahydrate is added, oxygen is introduced for oxidation arsenic precipitation, and arsenic precipitation residues and arsenic precipitation liquid are obtained; and adding zinc oxide into the arsenic-precipitated liquid to adjust the arsenic-precipitated liquid to a preset pH value for neutralization and purification to obtain neutralized and purified residues and a zinc sulfate solution, and returning the neutralized and purified residues to the second-stage acid leaching. According to the method, the valuable elements of arsenic, copper and zinc can be thoroughly separated, and arsenic precipitation caused in the zinc stannate decomposition process can be avoided.

The invention discloses a preparation method and application of a double-biomass carbon source coated ammonium polyphosphate intumescent flame retardant with a core-shell structure. Ammonium polyphosphate is used as a core, composite coating of chitosan and zinc stannate is achieved through an ion exchange reaction and a chelation reaction, then a lignin shell layer is introduced through a Mannich reaction, and the lignin and chitosan double-carbon-source coated intumescent flame-retardant antibacterial synergist is obtained. The flame retardant disclosed by the invention is simple and convenient in preparation process and high in safety, most of the raw materials are derived from green renewable biomass materials with low cost, and the flame retardant has environment-friendly characteristic and excellent polymer compatibility. The microcapsule surface modification technology enhances the interfacial interaction between the additive and the polymer matrix, systematic optimization of the flame retardant property of the composite material is realized, and when the flame retardant is used for modifying the TPU material, the molten drop phenomenon and a large amount of dense smoke generated in the combustion process can be effectively inhibited, and the TPU composite material can be endowed with excellent long-acting antibacterial property.

The invention discloses an amorphous copper-tin oxide nanometer material and a preparation method and application thereof, and belongs to the technical field of CO2 efficient conversion. Stannate ions and copper ions are compounded to obtain the amorphous copper-tin oxide nanometer material. The amorphous copper-tin oxide nano material has a large number of defect structures and surface atoms with unsaturated coordination, so that the amorphous copper-tin oxide nano material can provide abundant catalytic reaction active sites when being used as a catalyst. In addition, due to introduction of the copper element, the conductivity of the copper-tin oxide nano material is improved, H2O molecule dissociation is promoted, protons are provided for reduction of CO2, the adsorption and activation capacity of CO2 molecules and the activation capacity of H2O molecules are enhanced, and the conductivity of the copper-tin oxide nano material is improved. Therefore, the technical problems of low CO2 electrocatalytic reduction (CO2RR) activity and low formic acid Faraday efficiency of a tin-based catalyst are effectively solved.

The invention relates to a method for plasma-assisted sintering of calcium stannate short-wave infrared long afterglow powder, the chemical composition of the long afterglow powder is Ca2SnO4: xEr < 3 + > / Pr < 3 + > / Nd < 3 + >, and x is more than or equal to 0.1 and less than or equal to 1; the long afterglow powder takes calcium stannate as a matrix and is formed by doping and sintering rare earth capable of emitting red light. The sintering adopts a stir-frying plasma assisted low-temperature sintering method, compounds containing an erbium element, a praseodymium element and a neodymium element are doped, namely erbium trioxide, praseodymium trioxide and neodymium oxide, and H3BO3 is added as a fluxing agent to prepare a sample. The method is low in energy consumption, and the yield of the calcium stannate fluorescent powder is effectively improved; according to the invention, short-wave infrared long-afterglow luminescence of doped ions is realized, and the emission wavelength is adjustable from 800nm to 1600nm.

The invention belongs to the technical field of composite coatings, and particularly relates to a copper-tin electroplating solution and a preparation method and application thereof.The preparation method of the electroplating solution comprises the steps that citric acid is dispersed in water, potassium hydroxide is added, and a reaction solution 1 is obtained; basic cupric carbonate is added into the reaction solution until the solution becomes clear and does not generate bubbles, the solution is cooled, monopotassium phosphate is added, and a reaction solution 2 is obtained; dissolving potassium stannate in a dilute alkali hot solution, and after the potassium stannate is completely dissolved, adding hydrogen peroxide to obtain a reaction solution 3; and adding the cooled reaction liquid 3 into the reaction liquid 2 to obtain the electroplating liquid. The preparation method of the electroplating solution is simple and almost free of pollution, the electroplating solution is used for electroplating a metal test piece, and an obtained plating layer has high corrosion resistance.

The invention relates to the technical field of coatings, in particular to an oily fireproof coating and a preparation method thereof. The oily fireproof coating is prepared from the following components in parts by weight: 15 to 19 parts of modified epoxy resin, 5 to 7 parts of organic silicon modified acrylic resin, 10 to 12 parts of silane modified ammonium polyphosphate, 5 to 8 parts of pentaerythritol, 3 to 5 parts of zinc borate, 10 to 12 parts of hydrotalcite coated zinc stannate composite material, 9 to 11 parts of boron nitride, 0.8 to 1.2 parts of dispersing agent, 0.2 to 0.4 part of flatting agent and 0.6 to 0.8 part of polyamide wax anti-settling agent. And 40-60 parts of a solvent. According to the oily fireproof coating provided by the invention, the fire endurance and flame retardance of the coating are improved, and the optimal fireproof protection effect is achieved; the compatibility of ammonium polyphosphate and an oleoresin matrix is improved, and the fireproof performance, the long-term storage stability and the medium corrosion resistance of a cured coating are improved.

The invention provides a doped porous carbon / lead composite negative electrode material and a preparation method thereof, and belongs to the technical field of battery materials, the composite negative electrode material comprises the following raw materials by weight: 95-100 parts of lead powder, 0.4-0.6 part of barium sulfate, 0.2-0.4 part of humic acid, 0.1-0.3 part of zinc stannate, 0.08-0.12 part of carbon black, 0.08-0.12 part of composite fiber, and 1.0-1.5 parts of doped porous carbon / lead powder; wherein the doped porous carbon / lead powder is prepared from the following raw materials: chitosan, dicyandiamide, thiourea, lead citrate and sodium borohydride. According to the prepared composite negative electrode material, the chemical property of the carbon surface is optimized by doping heteroatoms, and the growth of lead dendrites is inhibited by utilizing a porous structure, so that the cycle life and the performance of a battery are effectively improved.

The invention discloses a method for preparing magnetite concentrate and tin-rich concentrate from tin-iron tailings, and belongs to the technical field of tailing resource utilization. The method comprises the following steps: uniformly mixing the tin-iron tailings and calcium carbonate minerals, carrying out agglomeration, and carrying out reduction roasting on the obtained agglomerates in a CO and CO2 mixed atmosphere to obtain a roasted product containing calcium stannate and magnetite; and after the roasted product is subjected to ball milling and size mixing, magnetite concentrate recovery through magnetic separation, gangue removal through gravity separation and calcium stannate concentrate recovery through flotation are sequentially carried out, and by means of the method, efficient conversion of the tin-iron tailings can be achieved at the low temperature, efficient enrichment and separation of tin minerals and iron minerals can be achieved, and the yield of the tin-iron tailings is improved. And high-grade calcium stannate concentrate products and magnetite products are obtained, and efficient, clean and large-scale utilization of tin-iron tailing resources is truly achieved.

The invention discloses an unsymmetrical dimethylhydrazine sensor based on an Ag-doped amorphous zinc stannate (ZnSnO3) sensitive material and a preparation method of the unsymmetrical dimethylhydrazine sensor, and belongs to the technical field of semiconductor metal oxide gas sensors. The preparation method comprises the following steps: firstly, taking tin tetrachloride pentahydrate and zinc chloride as metal precursors, taking citric acid hydrate as a metal complexing agent, preparing a zinc hydroxystannate ZnSn (OH) 6 nano cubic material with a hollow structure through a coprecipitation method and alkali etching, taking the zinc hydroxystannate ZnSn (OH) 6 nano cubic material as a precursor, preparing ZnSnO3 with an amorphous structure after high-temperature calcination, and obtaining an Ag-doped amorphous zinc stannate sensitive material through Ag doping; the material has the characteristics of high response, quick response recovery and low detection lower limit on low-concentration UDMH gas under the working condition of 175 DEG C. The sensor adopting the ceramic tube type structure is simple in manufacturing process, small in size and beneficial to industrial batch production, has important application value and has wide application prospects in the aspect of UDMH detection in a specific environment.

The invention relates to the technical field of power cables, and provides an anti-aging flame-retardant power cable which sequentially comprises a conductor, an insulating layer, an armor layer and a sheath layer from inside to outside, and the sheath layer is prepared from, by weight, 100 parts of linear low-density polyethylene, 2-3 parts of a photoinitiator, 0.2-0.5 part of an antioxidant, 0.03-0.08 part of a light stabilizer, 13-15 parts of a flame retardant and 5-6 parts of filler. The flame retardant comprises the following components in parts by weight: 100 parts of talcum powder loaded zinc stannate and 30-40 parts of magnesium hydroxide. According to the technical scheme, the problems of insufficient flame retardance and aging resistance of the sheath layer in the prior art are solved.

The invention discloses a method for recycling precipitation residues produced in the copper anode electrolytic refining process, and relates to the technical field of copper anode electrolytic refining. According to the method, the precipitation slag containing arsenic, tin, nickel, antimony and copper is treated, the physically entrained electrolyte is removed through water washing, most of copper, tin, antimony and the like are separated through a simple and low-cost flotation process, the obtained flotation copper concentrate is subjected to alkali liquor leaching to remove arsenic, antimony and tin, and the flotation effect is good. The leaching liquid is subjected to oxidative hydrolysis to remove antimony, and then calcium stannate slag and calcium arsenate slag are obtained through fractional precipitation of lime. The recycling method provided by the invention is low in cost, and resource utilization of arsenic, tin, antimony, nickel and copper can be realized.

The invention belongs to the technical field of metal material surface coating preparation and corrosion protection, and particularly relates to a stannate chemical conversion coating on a magnesium alloy surface and a preparation method of the stannate chemical conversion coating. The magnesium alloy is soaked in the stannate chemical conversion treatment solution added with the polyelectrolyte, the polyelectrolyte can be adsorbed on the metal surface, a more compact and more uniform composite coating is formed by a reaction product of the polyelectrolyte and the stannate, and the corrosion resistance and the mechanical property of the magnesium alloy are improved. After metal salt is added into the stannate chemical conversion treatment solution, a double-metal composite coating can be formed, and the double protection effect is achieved through the synergistic barrier effect. The coating prepared by the method disclosed by the invention is more uniform and flat in appearance, forms a larger and more uniform grain structure, is more compact and thicker, reduces the problems of microcracks and holes frequently occurring in a traditional stannate conversion film, is environment-friendly in process and environment-friendly, continues the advantages of no chromium and environment friendliness of a stannate system, meets the current environment-friendly requirements, and is suitable for industrial production. And the process is simple.

A curable composition comprising: a polyol component comprising one or more polyols; a functionalized butadiene component; and filler particles; wherein the curable composition has a thermal conductivity of at least 3.0 W / (mK) after curing. The filler particles include aluminum trihydroxide (ATH) and a smoke suppressant selected from zinc hydroxystannate (ZHS), zinc stannate, calcium stannate, calcium hydroxystannate, and any combination thereof.

The present application relates to the technical field of paint, and relates to an oil-based fireproof paint and a preparation method thereof.The oil-based fireproof paint comprises the following components in parts by weight: modified epoxy resin 15-19, organic silicon modified acrylic resin 5-7, silane modified ammonium polyphosphate 10-12, pentaerythritol 5-8, zinc borate 3-5, hydrotalcite coated zinc stannate composite material 10-12, boron nitride 9-11, dispersing agent 0.8-1.2, leveling agent 0.2-0.4, polyamide wax anti-settling agent 0.6-0.8, and solvent 40-60.The oil-based fireproof paint provided by the present application improves the fire resistance limit and the flame retardancy of the paint, and achieves the best fireproof protection effect;the compatibility of the ammonium polyphosphate and the oil-based resin matrix is improved, and the fireproof performance, the long-term storage stability and the medium corrosion resistance of the cured coating are improved.

The application discloses a mine anti-corrosion drainage pipeline and a preparation process thereof, and the preparation process comprises the following steps: cleaning a main pipeline to obtain a cleaned pipeline; placing the cleaned pipeline in a stannate solution to perform reaction, so that a stannate film layer is formed on the surface of the cleaned pipeline, and a stannate film layer pipeline is obtained; placing the stannate film layer pipeline in a biological carbon layer solution to perform standing, so that a biological carbon layer is formed on the surface of the stannate film layer pipeline, and a composite film layer pipeline is obtained; wrapping the surface of the composite film layer pipeline with an anti-corrosion cloth, and thus the mine anti-corrosion drainage pipeline is obtained; the composition of acid wastewater is fully considered, and limestone, biological carbon layer and other environment-friendly substances are used to solve the corrosion problem of acid wastewater to the pipeline in a mining area, the biological carbon layer can fix heavy metal ions in acid wastewater and underground soil, effectively hinders the migration of heavy metal elements, and reduces the pollution to the environment.

The invention relates to a strontium stannate-based mixed conductive solid electrolyte and a preparation method thereof, the molecular formula of the strontium stannate-based mixed conductive solid electrolyte is SrSn1-xMxO3-delta, and the doping element M is Sc < 3 + >, Zn < 2 + > and Fe < 3 + >; the method comprises the following steps: preparing to mix strontium carbonate powder, tin oxide powder and doped low-valence oxide powder according to the molar ratio of Sr: Sn: M being 1: (1-x): x; by taking water or absolute ethyl alcohol as a ball milling medium, carrying out ball milling on the mixed powder and then drying; carrying out compression molding, calcining at 800-1300 DEG C for 1-10 hours, and cooling along with a furnace; and grinding until the particle size is below 200 meshes, carrying out secondary compression molding, sintering at 1300-1600 DEG C for 1-10 hours, and cooling along with the furnace. The strontium stannate-based mixed conductive solid electrolyte has proton and electron conductivity, has the characteristics of high conductivity, hydrogen catalysis and dual carrier migration, meets the application requirements of materials in the fields of hydrogen separation membranes, anode materials of fuel cells, electrode materials for electrochemical synthesis and electrolysis and the like, and has a good application prospect.

The present invention relates to a solid-state rechargeable zinc-air battery featuring a novel bifunctional electrocatalyst, a dual-crosslinked polyacrylic acid hydrogel electrolyte, and a stannate-based additive for in situ zinc anode modification. The cathode comprises a gas diffusion layer coated with ruthenium-ruthenium oxide core-shell nanoparticles supported on nitrogen-doped graphene, providing enhanced bifunctional catalytic activity and stability. The anode consists of zinc metal modified in situ by a stannate-based additive to form a solid electrolyte interphase layer, effectively suppressing dendrite formation. The electrolyte membrane is a polyacrylic acid hydrogel, covalently and ionically cross-linked, and soaked in an aqueous solution containing potassium hydroxide, zinc acetate, and a stannate-based additive, resulting in improved mechanical strength, ionic conductivity, and battery safety. The integrated system delivers high power density, specific capacity, and robust cycling stability, offering a significant advancement in the field of solid-state zinc-air batteries.

A method for preparing stannate through an electrochemical method comprises the steps that tin powder, alkali liquor with the concentration of 2.0-4.0 M and chlorination liquid with the concentration of 1.0 M are prepared, the alkali liquor is a sodium hydroxide solution or a potassium hydroxide solution, and the chlorination liquid is a sodium chloride solution or a potassium chloride solution; the material molar ratio of Sn to the alkali liquor to the chlorination liquid is 1.0: (2.0-4.0): 1.0; under the stirring condition, tin powder is added into alkali liquor, and suspension liquid is formed; adding a chlorination solution into the suspension, heating to 50-80 DEG C, and keeping the temperature for electrolytic reaction until tin is completely dissolved in the solution; and after electrolysis is completed, filtering while the solution is hot, concentrating filtrate, cooling and crystallizing, carrying out centrifugal separation, and washing and drying separated solid substances to obtain a stannate product. The invention provides a novel method for preparing stannate by electrolyzing a sodium chloride / potassium chloride solution to prepare pypocholoride instead of hydrogen peroxide as an oxidizing agent, and solves the problems of potential safety hazards in storage and transportation, poor product stability and the like in preparation of stannate by using hydrogen peroxide in the prior art.

The invention belongs to the technical field of transparent conductive films, and provides a preparation method and application of a rare earth doped nano tin oxide plating layer, the preparation method comprises the following steps: stannate, rare earth salt and urea are added into a solvent, the molar ratio of tin element to rare earth element to urea is 1: (0.005-0.3): (0.1-3), the solvent is stirred, and the rare earth doped nano tin oxide plating layer is obtained; the rare earth salt is at least one of lanthanum salt and samarium salt; carrying out solvothermal reaction, centrifugal precipitation, drying and dispersion to obtain a glue solution containing rare earth doped nano tin oxide; and depositing the glue solution on a to-be-deposited object to obtain the rare earth doped nano tin oxide coating. By doping the rare earth elements lanthanum and samarium, the carrier concentration of the tin oxide is effectively improved, the oxygen vacancy defect on the surface of the tin oxide is reduced, and the conductivity of the tin oxide is improved. The prepared plating layer has good optical transmittance and conductivity, the plating layer electrode has good electrode stability and weather resistance, the process is simple, and the method is suitable for industrial production.

The invention discloses a cobalt hexahydroxystannate catalyst based on ZIF-67 derivation and a preparation method and application thereof.The preparation method of the catalyst comprises the steps that cobalt salt and tin salt are dissolved in an alcohol solvent and mixed to be uniform, and a metal salt mixed solution is obtained; dissolving an organic ligand in an alcohol solvent to obtain a ligand solution; mixing the two solutions, carrying out a stirring reaction at room temperature to obtain a precursor suspension, transferring the precursor suspension into a closed reaction container, and carrying out a solvothermal reaction at a set temperature; and after the reaction is finished, carrying out solid-liquid separation, washing and drying on the product to obtain the cobalt hexahydroxystannate catalyst based on ZIF-67 derivation. The catalyst disclosed by the invention shows relatively high selectivity, has an extremely considerable application prospect in a reaction for electrocatalytic synthesis of hydrogen peroxide, and provides a technical scheme and a material basis with extremely potential for development of related fields.

The application discloses a sleeve material for heat-shrinkable terminals, which is prepared from the following raw materials in parts by weight: 100 parts of polyetherimide, 10-30 parts of polycarbonate, 20-40 parts of trizinc trimellitate, and 2-8 parts of nano-zinc stannate. The application also discloses a preparation method of the sleeve material for heat-shrinkable terminals and heat-shrinkable terminals prepared therefrom. The sleeve material for heat-shrinkable terminals has the characteristics of high strength and transparency, low water absorption, excellent high-temperature resistance and flame resistance, and good processability, and has better comprehensive performance.

The invention discloses a functional current collector with high elongation and tensile strength and a preparation method and application thereof, and relates to the technical field of functional current collectors. According to the invention, polyvinyl chloride, zinc stannate, a calcium-zinc stabilizer and a plasticizer are mixed, and melt extrusion is carried out to obtain a modified polyvinyl chloride film; then magnetron sputtering and water electroplating are carried out, a metal layer is formed on the surface of the film in sequence, and drying is carried out to obtain the functional current collector. Wherein the zinc stannate 2 has two particle sizes; the plasticizer is one or a combination of more of dioctyl phthalate, dibutyl phthalate and poly (1, 2-propylene glycol adipate), and also comprises a cardanol plasticizer; the functional current collector obtained by the preparation method has good tensile strength and high elongation.

The invention relates to the technical field of composite coatings, in particular to a nano zinc stannate modified urushiol composite coating and a preparation method thereof. The paint comprises urushiol and zinc stannate powder. According to the invention, the urushiol is subjected to oxidative polymerization with a long alkyl side chain through a high-activity phenolic hydroxyl group of the urushiol, so that a three-dimensional cross-linked network skeleton is formed, and basic film-forming property and adhesive force are provided; zinc stannate nanoparticles and urushiol molecular chains form hydrogen bonds / chemical bonds through surface hydroxyl groups, and the zinc stannate nanoparticles are embedded into pores of a cross-linked network to construct a rigid reinforcement phase, so that the interface bonding strength is synergistically improved; zinc / tin ions released by zinc stannate are chelated with the urushiol degradation intermediate, a compact ceramic barrier layer is formed at a high temperature, free radicals are captured, oxygen diffusion is inhibited, and therefore hardness strengthening, adhesive force improving and heat stability enhancing are synergistically achieved.

This invention discloses a monodisperse nano-tin dioxide quantum dot in aqueous solution and its preparation method. The preparation method includes the following steps: (1) adding an organic weak acid to an aqueous solution containing stannate, producing a white precipitate, and stirring; the organic weak acid includes at least one of acetic acid, benzoic acid, citric acid, lactic acid, oxalic acid, and propionic acid; (2) subjecting the mixed aqueous solution obtained in step (1) to a hydrothermal reaction at 120-240℃, separating the solid and liquid phases after the reaction, and dissolving the solid phase in an aqueous solvent to obtain a tin dioxide-aqueous dispersion; (3) adding a quaternary ammonium salt and dimethyl sulfoxide to the tin dioxide-aqueous dispersion, and stirring to obtain monodisperse nano-tin dioxide quantum dots in aqueous solution. The nano-tin dioxide quantum dots of this invention are extremely small and controllable in size, have a significant quantum dielectric confinement effect, and are simple and inexpensive to prepare, thus broadening the application field of SnO2 and having important application value.

The application relates to the technical field of power cables, and discloses an anti-aging and flame-retardant power cable which comprises, from inside to outside, a conductor, an insulation layer, an armored layer and a sheath layer, wherein the raw material of the sheath layer comprises the following components in parts by weight: 100 parts of linear low-density polyethylene, 2-3 parts of a photoinitiator, 0.2-0.5 parts of an antioxidant, 0.03-0.08 parts of a light stabilizer, 13-15 parts of a flame retardant and 5-6 parts of a filler; the flame retardant comprises the following components in parts by weight: 100 parts of talcum powder loaded with zinc stannate and 30-40 parts of magnesium hydroxide. Through the technical scheme, the problem of insufficient flame retardation and aging resistance of the sheath layer in the related art is solved.

The invention belongs to the technical field of acrylic resin manufacturing, and discloses an acrylic resin composition with low VOC emission as well as a preparation method and application thereof. Acrylic acid and glycidyl tertiary carboxylic ester are pre-polymerized firstly, then a monomer mixture II is added for polymerization to prepare water-based acrylic resin, and acrylamide in the monomer mixture II reduces VOC emission in the acrylic resin composition through chemical adsorption; barium-doped modified zinc stannate is formed on the surface of graphene oxide through a hydrothermal reaction of sulfur-doped graphene oxide, zinc acetate dihydrate, tin chloride pentahydrate and barium chloride, the nano VOC inhibitor is prepared through high-temperature calcination, and electron transfer can be promoted through compounding of graphene and zinc stannate so as to improve the VOC catalytic degradation efficiency. The acrylic resin composition with low VOC emission prepared by the invention has excellent scratch resistance and low VOC emission performance.

The invention belongs to the technical field of preparation of ceramic frits, and particularly relates to a transparent ceramic frit and a preparation method thereof. The transparent ceramic frit is prepared from the following raw materials: quartz sand, calcined kaolin, pyrophyllite, strontium zirconate, zinc stannate, niobium pentoxide, boracite, petalite, calcium silicate, topaz and antimony oxide. According to the transparent ceramic frit, the quartz sand is used as a main raw material, a substrate network is provided, the mechanical property of the prepared transparent ceramic frit is improved by adding the calcined kaolin, the pyrophyllite and the strontium zirconate, and the transparency of the prepared transparent ceramic frit is improved by adding the zinc stannate, the boracite, the niobium pentoxide, the petalite and the calcium silicate; the topaz and antimony oxide are added, so that the high-temperature melt viscosity is reduced, the smoothness of the prepared transparent ceramic frit is improved, and due to the synergistic effect of the raw materials, it is ensured that the prepared transparent ceramic frit has excellent transparency and elasticity modulus.

The invention discloses a hydroxystannate perovskite type electrocatalyst Cu < 1-x > CoxSn (OH) 6 and a preparation method and application thereof, and the preparation method comprises the following steps: dissolving stannate in deionized water to obtain a stannate solution; soluble copper salt and cobalt salt are dissolved in deionized water, and a copper-cobalt mixed solution is obtained; and directly mixing and stirring the stannate solution and the copper-cobalt mixed solution to react to generate a precipitate, and carrying out solid-liquid separation and freeze drying to obtain the Cu1-xCoxSn (OH) 6 which is used for preparing ammonia by reducing nitrate through electro-catalysis. The hydroxystannate perovskite type electrocatalyst is in a nano cubic particle morphology, has rich reaction sites, when the electrocatalyst is used for electrocatalytic reduction of nitrate radicals, the ammonia productivity is higher than 1 mmol cm <-2 > h <-1 >, the ammonia production Faraday efficiency is kept at 90% or above, and the electrocatalyst has excellent ammonia production Faraday efficiency and ammonia yield.

The application provides a novel piezoelectric catalytic activation method and application of ferrate, and belongs to the technical field of ferrate activation, which comprises the following steps: dissolving potassium ferrate in deionized water; then adding zinc stannate into the potassium ferrate solution; and finally, under the condition of ultrasonic, the piezoelectric property of zinc stannate is used to catalytically activate ferrate. The activation method of ferrate provided by the application can be used for the degradation of sulfonamide antibiotics in water, and the degradation efficiency is significantly better than that of ferrate alone, and the adaptability is strong, and stable activation effect can be shown in various anion environments, and more importantly, the novel activation method solves the problem that the stability and oxidizability of ferrate are incompatible, can react under neutral conditions, ensures the stability, and has the oxidizability at the same time, and is suitable for popularization and application in sewage treatment.