6625 results about "Oxide" patented technology

The invention discloses a matte glaze and a preparation method thereof. The matte glaze comprises the following components by weight: 1-5 parts of zinc oxide, 5-15 parts of barium carbonate, 0-15 parts of zirconium silicate, 10-25 parts of potassium feldspar, 10-20 parts of kaolin, 5-15 parts of calcite, 5-15 parts of calcined talcum powder, 20-35 parts of a matte frit and 0.5-1 part of an additive. Specifically, the matte frit comprises the following components by weight: 30-50 parts of SiO2, 15-20 parts of Al2O3, 0.01-0.5 part of Fe2O3, 3-10 parts of CaO, 0.5-5 parts of MgO, 1-5 parts of K2O, 3-10 parts of Na2O, 3-10 parts of ZnO, 0.1-1 part of B2O3 and 10-25 parts of BaO. By introducing the matte frit, the melting temperature of the formula is lowered, the firing range of the formula isbroadened, and the glaze texture achieves a fine matte effect.

The invention discloses piggy creep feed containing composite flavone. The piggy creep feed is prepared from the following raw materials in parts by weight: 13 to 20 parts of expanded corn, 10 to 25 parts of corn, 6 to 13 parts of broken rice, 8 to 12 parts of flour, 8 to 15 parts of whey mist, 3 to 8 parts of soy protein concentrate, 5 to 10 parts of extruded soybean, 0.7 to 3 parts of soya-bean oil, 7 to 12 parts of 46.5-percent bean pulp, 2 to 5 parts of fish meal, 2 to 5 parts of plasma protein powder, 0.3 to 0.7 part of mountain flour, 0.5 to 1.0 part of calcium hydrophosphate, 0.05 to 0.5 part of lysine, 0.05 to 0.3 part of threonine, 0.1 to 0.3 part of sodium chloride, 0.1 to 0.8 part of compound flavone premix compounds, 0.15 to 0.3 part of zinc oxide, 0.03 to 0.06 part of calcium propionate, 0.02 to 0.04 part of ethoxyquin and 1.0 part of suckling pig premix compounds. The invention also discloses a preparation method. The intestinal tract health and the production performance of weaned pigs can be improved.

The invention provides a nitrogen oxide incineration equipment control method for drying carbonization, which comprises the following steps: acquiring combustion characteristic data of high-humidity sludge blocks in a fluidized bed incinerator, and extracting nitrogen oxide peak intensity, occurrence time, duration and peak shape steep degree to obtain a parameter set; real-time load data of the induced draft fan are obtained, the hearth negative pressure stability fluctuation range is analyzed in combination with the adjustment value, and if fluctuation exceeds a preset safety range, the load adjustment amplitude of the induced draft fan is calculated, and a load adjustment curve is generated; a multi-actuator cooperative control time sequence model is constructed based on the load adjustment curve and the adjustment value, the nitrogen oxide peak generation time and the duration are fused, the cooperative adjustment time sequence of secondary air supply and the draught fan load is calculated, and a control instruction is generated; and a control instruction is transmitted to a fluidized bed incinerator executing mechanism, the opening state of the tuyere and the air volume ratio are adjusted, the load of the induced draft fan is updated, and the adjusted hearth operation parameters are continuously monitored.

The invention relates to the technical field of high-entropy oxide and electrocatalyst synthesis, in particular to a double-phase hollow high-entropy oxide catalyst and a preparation method and application thereof, the double-phase hollow high-entropy oxide catalyst comprises metal elements and non-metal elements, the metal elements comprise ruthenium, nickel, cobalt, iron, manganese and chromium; the non-metallic element is oxygen; the chemical formula of the double-phase hollow high-entropy oxide catalyst is NiCoFeMnCrRuO. The invention further discloses a preparation method of the catalyst. The double-phase hollow high-entropy oxide catalyst has a multi-shell hollow structure, provides a larger specific surface area and exposes a large number of reaction active sites, so that the double-phase hollow high-entropy oxide catalyst has lower overpotential, higher reaction efficiency and good electrochemical stability; meanwhile, the preparation method of the double-phase hollow high-entropy oxide catalyst is simple in process, low in cost, high in repeatability and suitable for industrial mass production, and has a wide application prospect.

The invention relates to the technical field of solid-state batteries, in particular to oxyhalide solid-state electrolyte as well as a preparation method and application thereof. The method comprises the following steps: taking molten salt LiaMbXc as a raw material, reacting with an oxide AdOf in a molten state, removing steam impurities by utilizing a high-temperature vacuumizing mode, and cooling to prepare the oxyhalide solid electrolyte; according to the invention, the molten salt raw material is molten at high temperature to form the ion melt, and the oxygen element is introduced to replace part of halogen, so that the hardness of the target electrolyte is reduced after cooling, the deformability at room temperature is improved, and the obtained electrolyte is high in conductivity and wide in antioxidant electrochemical window. The prepared oxyhalide solid electrolyte is used for preparing a positive electrode, the adhesion force between the electrolyte and positive electrode material particles, the actual microscopic contact area and the ion migration rate are improved through melt permeation, the problem of a positive electrode interface is effectively relieved, and the electrochemical performance of an all-solid-state battery is improved.

The invention belongs to the technical field of rare earth functional materials, and particularly relates to a rare earth aluminate low-temperature magnetic refrigeration material and a preparation method and application thereof.The preparation method comprises the following steps that 1, rare earth metal nitrate and aluminum nitrate are added into water to be mixed, and a mixed solution is prepared; adding ammonia water into the mixed solution to prepare a precipitate; (2) carrying out annealing treatment on the precipitate to prepare a metal oxide; and (3) calcining the metal oxide to obtain the rare earth aluminate low-temperature magnetic refrigeration material. The rare earth aluminate which has the characteristics of stable structure, low preparation cost, strong mechanical property, high magnetic density and the like and is prepared by adopting a coprecipitation method and combining a high-temperature sintering technology has more excellent magnetocaloric properties in a low-temperature region.

The invention discloses a high-entropy oxide for synergic nitrogen removal and catalysis as well as a preparation method and application thereof, and belongs to the technical field of material preparation, the high-entropy oxide is a single solid solution phase formed by five or more metal elements of Fe, Co, Ni, Cu, Mn, Ti and Ce and an oxygen element, the configuration entropy of the high-entropy oxide is greater than or equal to 1.5 R, R is a gas constant, and R is an oxygen constant. The mole fraction of each metal element is 0.1-0.3, and the sum of the mole fractions of the metal elements is 1. According to the high-entropy oxide with the synergistic nitrogen removal and catalysis effects and the preparation method and application thereof, a synergistic catalysis system is constructed through the high-entropy oxide and silicon carbide, and the high-entropy oxide has the multiple advantages of being high in nitrogen removal efficiency, high in stability, simple in process, environmentally friendly and wide in application range; the removal rate of total nitrogen and key nitrogen pollutants can reach 90% or above in the seawater high-salt environment, and the environment-friendly emission requirement is met.

The invention belongs to the technical field of organic pollution treatment, and relates to a biochar-LDH-nZVI-GO composite material for organic pollution remediation and a preparation method and application thereof.The preparation method comprises the steps that graphene oxide is ultrasonically dispersed in deionized water, magnesium salt and aluminum salt are added to form uniform suspension liquid, then the uniform suspension liquid is mixed with biochar suspension liquid, and the biochar-nZVI-GO composite material is obtained; carrying out pH (Potential of Hydrogen) regulation and a hydrothermal crystallization reaction, so as to prepare a biochar-Mg / Al-LDH-GO compound; and dispersing the compound in an organic solvent, sequentially adding FeSO4. 7H2O and a NaBH4 solution in an inert atmosphere to carry out a reduction reaction, and finally washing and drying to obtain the biochar-LDH-nZVI-GO composite material. The material shows high-efficiency removal capacity on various organic pollutants such as trichloroethylene, chlorobenzene and polychlorinated biphenyl, is suitable for high-efficiency green remediation of organic pollutants in soil and water, and has good popularization and application prospects.

The invention discloses an A-site high-entropy solid oxide fuel cell cathode material as well as a preparation method and application thereof, and provides an A-site high-entropy solid oxide fuel cell cathode material Pr < 0.2 > M < 0.2 > La < 0.2 > Ba < 0.2 > Sr < 0.2 > Co < 0.8 > Fe < 0.2 > O < 3-delta > with a perovskite phase. The preparation method comprises the following steps: S1, weighing multi-element metal nitrates, and mixing to obtain a first mixed solution; s2, dissolving ethylenediamine tetraacetic acid in ammonia water to obtain a second mixed solution; mixing the first mixed solution, the second mixed solution and citric acid to form a mixed precursor solution; s3, carrying out second heating treatment on the mixed precursor solution, and adjusting the pH value to form a gel precursor; and S4, carrying out pre-sintering treatment, third heat treatment and calcination treatment on the gel precursor to obtain a high-grade powder precursor, and carrying out ball milling and sieving treatment to obtain the A-site high-entropy solid oxide fuel cell cathode material. The cathode material is high in stability and good in chemical compatibility with a barrier layer GDC, provides high-quality mass transfer channels and active sites for O2 / O- / O2-, and has good electrochemical performance at medium and low temperatures.

The invention discloses a nickel-containing etching wastewater treatment process, which belongs to the technical field of environmental protection, and comprises a raw water regulating tank, a pH pre-regulating tank, a heterogeneous catalytic oxidation tower, a neutralization coagulation tank, an inclined tube sedimentation tank and a clean water tank which are connected in sequence. According to the process, under the neutral condition, a catalyst loaded with cobalt manganese oxide is used for activating sodium hydrogen persulfate, high-activity sulfate free radicals are generated, a Ni-EDTA complex structure is fractured in a targeted mode, free nickel ions are released in situ, organic ligands are synchronously mineralized, and the adding amount of sodium hydrogen persulfate is dynamically adjusted through a clean water pool closed-loop control system; and high-purity nickel hydroxide precipitate is generated through alkaline precipitation and coagulation, so that efficient solid-liquid separation is realized. The treatment process disclosed by the invention is compact in flow and stable in operation, effectively solves the problems of difficult complex breaking, low nickel removal efficiency, high sludge toxicity, difficult resource recovery and the like when the EDTA complex nickel wastewater is treated by a traditional method, realizes closed-loop recovery of nickel resources, and has the remarkable advantages of low cost, high efficiency and environmental friendliness.

The present invention provides a display device and a method for manufacturing the display device. A metal layer is formed on a highly light-transmissive substrate; a resist mask having an opening pattern is formed on the metal layer; exposed portions of the metal layer is etched away in this state to form openings; then the resist mask is removed; and a surface of the metal layer and an inner side wall of each of the openings are oxidized to form a metal oxide layer. Thus, a front surface and a rear surface of the aperture plate are caused to have different reflectances. The oxide layer is formed at the same time as when the resist mask is ashed to remove resist.

The invention relates to the technical field of titanium dioxide, and discloses a preparation process of oil paint core-coated titanium dioxide, which comprises the following steps: a core layer is rutile type titanium dioxide particles with the particle size range of 0.1-0.5 mu m and the specific surface area of 8-15m < 2 > / g, an inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5), the coating thickness is 5-15% of the diameter of the core layer, and the inorganic coating layer is composed of silicon dioxide and aluminum oxide according to the mass ratio of 1: (0.2-1.5). Wherein the silicon dioxide is coated by a hydrolytic deposition method, the aluminum oxide is coated by a sol-gel method, the organic coating layer comprises a copolymer containing a silane coupling agent and organic silicon resin, the organic silicon resin is methyl phenyl silicon resin, the organic coating layer accounts for 1-8% of the total mass of the titanium dioxide, and the surface contact angle of the organic coating layer is greater than or equal to 110 degrees. According to the preparation process of the oil paint core-coated titanium dioxide, an inorganic-organic gradient coating system is constructed, so that the core-coated titanium dioxide has a gloss retention rate of more than 95% (ASTM D523) and a delta E color difference of less than 1.5 (ISO 7724) after 1000 hours in a QUV accelerated aging test, and the weather resistance of the core-coated titanium dioxide is improved by more than 3 times compared with that of the traditional titanium dioxide.

The invention discloses a composite modified material for a lithium niobate wafer, and relates to the technical field of nano materials. The material is composed of an anti-corrosion passivation matrix and a function enhancement component, wherein the anti-corrosion matrix adopts a silicon nitride / SiO2 multi-layer composite layer, atomic layer deposition titanium dioxide and magnetron sputtering aluminum oxide to form cascade protection; the functional layer comprises lead sulfide nanoparticles and nano silicon dioxide, and is directionally modified by a silane coupling agent and a perfluoropolyether surfactant. During preparation, PbS nano-particles are synthesized by combining a PECVD-ALD-magnetron sputtering stepped deposition process (200-150 DEG C) with a solvothermal method, and finally, the PbS nano-particles are formed through spin coating-annealing (300-400 DEG C). The optical loss of the material under the wavelength of 1550 nm is smaller than 0.2 dB / cm, the acid and alkali corrosion resistance is larger than 240 h, the lead dissolution rate is smaller than 0.1 ppm, the interface state density is reduced by 2 orders of magnitude, the contradiction between lithium niobate wafer surface degradation, photoelectric property degradation and lead-containing material environment risk is solved, and the material is suitable for 5G optical waveguide and quantum integrated device packaging.

The invention discloses a preparation method and application of a hydrophobic core-shell structure catalyst, and the method comprises the following steps: adding a metal oxide and a surfactant into a first solvent to obtain a first dispersion liquid; adding an alkaline solution and a silicon source into the first dispersion liquid to obtain a first turbid liquid; calcining the first turbid liquid to obtain a porous core-shell material of silicon dioxide coated metal oxide; adding the porous core-shell material into a third solvent to obtain a second suspension; and adding an alkaline solution and a silane agent into the second turbid liquid to obtain the hydrophobic core-shell structure catalyst of the hydrophobic silicon dioxide coated metal oxide. The oxidation reaction of the inner core of the silicon dioxide layer does not destroy hydrophobic groups on the outer layer, so that the hydrophobic performance is maintained for a long time, organosilane is grafted on the surface of the silicon dioxide shell layer, inhibition of water vapor on the activity of the catalyst is reduced, and competitive adsorption of water vapor and reaction gas is prevented; the activity and the service life of the catalyst under high-temperature and high-humidity conditions are effectively improved.

The invention discloses a high-strength high-temperature alloy and a preparation method thereof. The high-strength high-temperature alloy comprises a high-temperature alloy matrix and rare earth oxides dispersed and distributed in the high-temperature alloy matrix. The high-temperature alloy matrix is GH4169, and the high-temperature alloy matrix is made of The rare earth oxide is one or two of La2O3 and Ce2O3, the particle size of the rare earth oxide is 50-500nm, and the total adding amount of the rare earth oxide is 0.02-0.03% of the mass of the alloy; the preparation method of the high-strength high-temperature alloy comprises the following steps: (1) preparing rare earth oxide particles; (2) charging and smelting rare earth oxide particles and alloy raw materials in a vacuum induction furnace, and casting into ingots after the components are qualified; (3) electroslag remelting: adding analytically pure rare earth oxide into a slag system; and (4) the electroslag ingot is subjected to homogenization, forging and solid solution aging treatment, and then the alloy is obtained. According to the method, the strength and plasticity of the high-temperature alloy are improved.

The invention discloses a carbon-loaded high-entropy oxide and a preparation method thereof, the carbon-loaded high-entropy oxide is of a core-shell structure formed by coating carbon with a high-entropy oxide, and the high-entropy oxide comprises at least five metal elements of chromium, manganese, iron, cobalt, nickel and copper. The carbon-loaded high-entropy oxide has the advantages of low density, high dielectric loss and excellent wave-absorbing performance, and is expected to be widely applied to electromagnetic absorption and elimination in the fields of electronics, communication civil affairs and aerospace military.

The invention discloses a rare earth oxide post-supported ruthenium-based ammonia decomposition catalyst, a preparation method and application thereof in hydrogen preparation through ammonia decomposition, and belongs to the technical field of hydrogen production. The ammonia decomposition catalyst takes an oxide or a carbon material as a carrier, firstly, ruthenium metal is loaded to form an active center, then, rare earth oxide is introduced in a post-loading mode, the structure and electronic characteristics of a metal-carrier interface are regulated and controlled, and finally, the ammonia decomposition catalyst with high dispersity and stability is obtained through reduction treatment. The low-temperature ammonia decomposition performance and the operation stability are obviously improved. Under the conditions that the temperature is 400 DEG C and the air speed of ammonia gas is 18000 mL.gcat <-1 >. H <-1 >, the ammonia conversion rate of the catalyst is close to the thermodynamic limit, and the catalyst has good anti-sintering and anti-poisoning capabilities. The catalyst is simple and convenient in preparation process, can be produced on a large scale, is suitable for various scenes of hydrogen production through ammonia decomposition, is particularly suitable for distributed and on-demand hydrogen production systems, and provides powerful technical support for efficient utilization and green conversion of hydrogen energy.

The invention discloses a heat supply pipeline welding seam detection device, and relates to the technical field of heat supply pipeline processing, the heat supply pipeline welding seam detection device comprises a transmission mechanism 1 and a detection bin, the transmission mechanism 1 is provided with an inverted U-shaped support, the bottom wall of the horizontal section of the inverted U-shaped support is slidably connected with magnetization members in a front-back symmetrical manner, and the inverted U-shaped support is provided with a clamping member and a pretreatment mechanism; a detection bin is arranged on the left side of the first conveying mechanism, and a transferring mechanism, a marking mechanism and a second conveying mechanism are arranged on the detection bin. Through cooperation of the driving assembly and the brushing assembly, the outer wall of the to-be-detected pipe fitting is brushed, the situation that magnetic powder, oxide skin, burrs and the like adhere to the surface of the pipe fitting, the magnetic powder gathering phenomenon caused by non-defect factors is caused, and misjudgment occurs in the detection process is avoided, through cooperation of the driving assembly and the flushing assembly, the pipe fitting is flushed, and the detection efficiency is improved. The scraped impurities are prevented from being attached to the outer wall of the to-be-detected pipe fitting, and meanwhile, the pre-wetting treatment can be carried out, so that the fluorescent magnetic suspension is helped to cover the surface of the pipe fitting more uniformly.

The invention relates to the technical field of metal powder processing, and discloses a high-performance dissimilar metal powder precision forming process which comprises the following steps: filling powder into a mold cavity, applying vibration disturbance, monitoring the change rate of a phase lag angle, judging that the powder is dense when the change rate is lower than an offset threshold value, outputting a pressing mode switching signal, an induction heating device is used for applying transient thermal load to induce cracks of an oxide film on the surfaces of particles, the pressure load is applied, the side wall is adjusted to generate shear displacement to peel off the oxide film, and metallurgical bonding is achieved through fresh metal surface contact. An interface is activated through thermal expansion mismatch and mechanical friction synergistically, a high-density uniform green body is obtained at low temperature, generation of brittle intermetallic compounds is inhibited, and the fatigue resistance of a formed part is enhanced.

The invention relates to the technical field of composite catalyst materials, in particular to a ferrocobalt bimetal hydroxide / BCN composite material and a preparation method and application thereof.The preparation method comprises the steps that cobalt nitrate and ferric nitrate are used for preparing a metal salt solution, sodium carbonate and sodium hydroxide are used for preparing a precipitant solution, a B-doped carbon nitride BCN material is added into the metal salt solution to form a uniform suspension, and the suspension is dried to obtain the ferrocobalt bimetal hydroxide / BCN composite material; dropwise adding the precipitant solution into the suspension to obtain a precursor solution, performing hydrothermal reaction on the precursor solution, and performing centrifugal impurity removal and drying to construct a heterostructure between layered double hydroxide and BCN in situ to obtain the Co-Fe LDH-coated BCN composite material. Through boron doping and heterostructure construction, the charge separation capacity of graphite carbon nitride is enhanced, the electron migration efficiency is improved through a heterointerface structure, the metal ion release amount and the cycle stability are controlled, and the catalytic performance is remarkably improved.

The invention provides a solid electrolyte modified positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: a) dissolving an inorganic oxide electrolyte intermediate product in a mixed solution of water and an organic matter containing functional groups, adjusting the pH value to 2-9, adding lithium fluoride, stirring, and then evaporating and drying to obtain a first gel product; b) performing puffing treatment on the first-time gel product obtained in the step a), adding the first-time gel product and a ternary positive electrode material into a solvent, performing ultrasonic dispersion, stirring, and performing evaporation drying to obtain a second-time gel product; and c) sintering the second gel product obtained in the step b) in an oxygen-free environment to obtain the solid electrolyte modified positive electrode material. According to the invention, through cooperation of liquid-phase coating and high-temperature solid-phase diffusion treatment, a sintered stone structure with high ionic conductivity and high stability is introduced to the surface of the ternary material, and the problem of cyclic cracking of the ternary positive electrode material can be effectively solved.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to a self-supporting hollow carbon membrane electrode and a preparation method and application thereof.The preparation method comprises the following steps that a self-supporting hollow carbon nanofiber membrane with metal M and metal M compound heterojunction is prepared through a coaxial electrostatic spinning technology; the self-supporting electrode with a high specific surface area and a rapid mass transfer channel is formed by regulating and controlling the flow rate of the spinning solution of the outer layer and the inner layer and a high-temperature carbonization process, the metal M is selected from one of iron, cobalt, nickel, manganese and molybdenum, and the metal M compound is one of oxide, hydroxide, carbide, nitride, phosphide and chalcogenide. Compared with the prior art, the self-supporting hollow carbon membrane electrode disclosed by the invention has good mechanical stability, good hydrophilic and hydrophobic properties and excellent HER and OER bifunctional catalytic activity, and can be used for efficiently and completely decomposing water.

The invention provides a concrete composite expanding agent and a preparation method thereof, and belongs to the field of concrete admixtures. The concrete composite expanding agent comprises modified phosphogypsum, fly ash, bauxite, a modified oxide and an auxiliary agent, and is obtained by uniformly mixing the modified phosphogypsum, the fly ash, the bauxite, the modified oxide and the auxiliary agent which have different specific surface areas. According to the composite expanding agent, the modified ardealite and the fly ash synergistically provide an early-stage expansion source, early-stage shrinkage of concrete is compensated through calcium sulphoaluminate hydration products, meanwhile, modified magnesium oxide serves as a later-stage expansion source, magnesium hydroxide is generated through slow hydration, and long-term expansion compensation is achieved; the device has the advantages of good strength, compensation capability and the like; a large amount of industrial waste residues such as ardealite and fly ash are utilized, high-added-value utilization of the industrial waste residues is achieved, and remarkable economic benefits are achieved.

A method and system for precipitating a solid using molten oxide electrolysis are presented. Using an electrical current for electrolysis in a first vessel, an oxide material is heated to form a liquid cathode. The first vessel also includes a corresponding anode. A portion of the liquid cathode is received into a second vessel that is separated from the first vessel by a conduit. The portion of the liquid cathode is allowed to cool. Precipitate of the cooled liquid cathode may then be collected in the second vessel. The precipitate may be a metal or metalloid, such as silicon. The method and system allow for continuous processing for production of a precipitate material, in contrast to batch processing of other methods or systems. For example, precipitate may be harvested from the second vessel while electrolysis is continuously performed in the first vessel.

The invention relates to a diffusion source for a neodymium-iron-boron magnet and a preparation method and application of the diffusion source. The invention discloses a rare-earth metal catalyst which comprises the following components in percentage by mass: 46%-49% of an organic solvent, 0.1%-2% of an adhesive, 0.1%-5% of a metal oxide and 46%-49% of rare-earth metal, and the melting point of the metal oxide is higher than that of the neodymium-iron-boron magnet. The specific organic solvent, the adhesive, the metal oxide and the rare earth metal are matched for use according to a specific matching relation, so that the diffusion source is more stable, the diffusion effect is improved, and when the magnet attached with the diffusion source is subjected to thermal diffusion treatment, the rare earth metal can be diffused into the magnet so as to improve the coercive force and other properties of the magnet. In the process, the high-melting-point metal oxide is adhered to the surface of the magnet and then serves as a spacer, the adhesion phenomenon of the magnet in the high-temperature sintering diffusion process is reduced or avoided, grain boundary diffusion is further promoted, and the performance of the magnet is improved.

The invention discloses a carbon nitride-based composite material as well as a preparation method and application thereof. The carbon nitride-based composite material comprises a non-metal doped carbon nitride carrier and a noble metal, wherein the noble metal exists in the carrier in an element doping form and / or is loaded on the carrier in an oxide form; the precious metal is one or more of Pt, Pd, Au and Ru, and the nonmetal is one or more of P, S and I. According to the carbon nitride composite material disclosed by the invention, noble metal is utilized to modify carbon nitride, the number of surface active sites is increased, the electron and chemical structures of an active center are adjusted, and meanwhile, generation and migration of photo-generated charges are promoted. Meanwhile, the surface of the carbon nitride composite material is modified by non-metallic elements, so that adsorption and activation of reactant H2O molecules are effectively promoted. The catalyst disclosed by the invention is simple in preparation process, good in repeatability and easy for large-scale production.

The invention belongs to the field of synthesis of inorganic non-metallic materials, and particularly relates to an equimolar-ratio seven-element high-entropy oxide and a preparation process thereof. The preparation process comprises the following steps: putting seven oxide powder Al2O3, Y2O3, TiO2, ZrO2, NiO, CuO and CeO2 into a ball milling tank according to a molar ratio of 1: 1: 2: 2: 2: 2: 2: 2, adding absolute ethyl alcohol and zirconium oxide grinding balls, performing ball milling in a ball mill, and fully drying and sieving after ball milling to obtain mixed powder; carrying out tabletting treatment on the mixed powder to obtain a to-be-sintered green body; and putting the to-be-sintered green body into an alumina crucible, and putting the alumina crucible into a microwave oven for microwave sintering. According to the method, the equimolar-ratio seven-element high-entropy oxide (AlYTiZrNiCuCe) Ox with good solid solution is obtained, the crystallinity and element uniformity of the seven-element high-entropy oxide are improved, all the raw materials react completely, meanwhile, the process efficiency is high, and energy consumption is low.

The invention discloses a method for melting and smelting ferrochrome in an all-oxygen hydrogen-rich low-carbon furnace, which comprises the following steps: (1) proportioning and uniformly mixing chromite pellets, coke and lime according to the mass ratio of 1: (0.15-0.2): (0.08-0.15), and filling the mixture into the all-oxygen hydrogen-rich low-carbon furnace; (2) high-temperature hydrogen-rich gas at the temperature of 900-1100 DEG C is introduced into the middle of the furnace body, and selective reduction of ferrochrome oxide is achieved; blowing industrial pure oxygen at the lower part of the furnace body, combusting with coke to generate CO, and driving a secondary reduction reaction; (3) maintaining a high-temperature environment in the furnace through oxygen-fuel combustion to completely melt the materials into molten iron, and carrying out central stirring on the molten iron to form a vortex with the height-diameter ratio of 0.5-1.5; and (4) discharging the molten iron after the reaction is completed. According to the method, the reduction rate of chromium in the chromite exceeds 92%, the carbon emission is reduced by 40% or above compared with a traditional blast furnace and submerged arc furnace process, meanwhile, the method has the advantages of being high in smelting efficiency, low in energy consumption, stable in product quality and the like, and a low-carbon and efficient innovative path is provided for ferrochrome smelting.

The invention discloses a ceramic rock plate with a decorative effect and a production process thereof, and belongs to the technical field of ceramics. The rock plate is composed of a green body layer, a ground glaze layer, a cover glaze layer and an ink jet pattern layer, and after firing, a micro-nano rough and low-surface-energy synergistic protection layer is formed through oxygen-nitrogen plasma activation, a hydrothermal reaction of aluminum salt and an ammonia source compound, high-temperature calcination and silane derivative dipping and curing. The green body takes wollastonite, quartz sand and the like as raw materials, and the ground glaze and the cover glaze adopt a feldspar-quartz-nepheline system; after firing, performing plasma treatment and hydrothermal treatment to generate needle-shaped aluminum oxide, and introducing a silane derivative to realize double functions of super-hydrophobicity and wear resistance. Compared with the prior art, the anti-fouling and wear-resistant coating reaches the national standard 5 level, the process is simple, and the coating can be directly connected to an existing production line and is suitable for high-end wall floor decoration.

The invention relates to a preparation method and system for an atomic gas chamber for sapphire coating, and the preparation method comprises the steps: S1, placing a cleaned atomic gas chamber on a heating base station of a reaction chamber, and filling the reaction chamber with replacement gas to discharge residual gas in the reaction chamber; s2, filling aluminum source gas into the reaction chamber, and carrying out chemical adsorption on the wall surface of the atomic gas chamber to form a first film layer; s3, filling replacement gas into the reaction chamber to discharge residual aluminum source gas in the reaction chamber; s4, filling oxide gas into the reaction chamber to oxidize the first film layer and convert the first film layer into an aluminum oxide film layer; s5, filling replacement gas into the reaction chamber to discharge residual oxide gas in the reaction chamber; and S6, repeating the steps S2 to S5 to form a preset number of aluminum oxide film layers with a preset thickness on the wall surface of the atomic gas chamber so as to form the atomic gas chamber with the sapphire coating film. The anti-shielding capability of the alkali metal atomic gas chamber can be enhanced, and the electromagnetic wave precision measurement performance of the atomic gas chamber is improved.