1089results about How to "High reactivity" patented technology

The invention belongs to the technical field of biodegradable materials, and particularly relates to an environment-friendly degradable modified composite material, a preparation method and application. The material comprises PBAT, PBS, PLA, an inorganic mineral filler, natural plant fibers, PBAT-PTMO, nano-silica, an auxiliary agent and a plasticizer. In the preparation process, PLA is prevented from being hydrolyzed in vacuum drying, calcium carbonate and nano silicon dioxide are preheated and activated, natural plant fibers are dispersed through steam explosion and ethanol treatment, and raw material pretreatment comprises high-speed mixing and agglomeration breaking and medium-speed secondary premixing so as to realize uniform distribution. The co-rotating twin-screw extruder accurately controls the temperature, the speed, the rotating speed and the length-diameter ratio, and ensures melting plasticizing, uniform mixing and stable extrusion molding. According to the invention, by adopting accurate proportioning of multiple raw materials and a modification treatment process, the properties of mechanics, degradation, processing and the like of the material are synergistically improved, and the material is widely applied to multiple fields such as packaging bags, disposable tableware and agricultural plastic mulching films.

The invention discloses activated regenerated micro-powder as well as a preparation method and application thereof, and belongs to the technical field of waste concrete regenerated micro-powder. The activated regenerated micro-powder provided by the invention is prepared by the following steps: crushing waste concrete, carrying out ball milling, screening to obtain initial regenerated micro-powder with the particle size of less than 150 microns, adding the initial regenerated micro-powder into a carbon dioxide absorption solvent, and mixing to obtain regenerated micro-powder slurry; and heating the regenerated micro-powder slurry to 45-65 DEG C, introducing CO2 into the regenerated micro-powder slurry to carry out wet mineralization treatment, and carrying out suction filtration and drying to obtain the regenerated micro-powder. The preparation method of the regenerated micro powder provided by the invention is simple, not only is full utilization of active calcium and magnesium components in the waste concrete powder realized, but also permanent fixation and storage of carbon dioxide are effectively realized, the actual apparent carbon sequestration amount reaches 33-39%, the maximum mineralization efficiency can reach 94.41%, and the regenerated micro powder can be recycled. The method has a good promotion effect on protecting the ecological environment and promoting the development of circular economy.

The invention discloses a gas mixing control device for an LPG (Liquefied Petroleum Gas) generator set, which relates to the technical field of generator set operation control, and comprises a gas engine for realizing accurate mixing proportion control under the matching of a proportion dynamic response component, predicting the optimal gas mixing proportion and flow demand under the current working condition, and controlling the gas engine to operate according to the optimal gas mixing proportion and flow demand. When the propane content in the LPG is increased, the model prediction controller properly reduces the gas inflow and increases the air amount, sufficient combustion is ensured, the mixing proportion and flow can be rapidly corrected, the combustion process is rapidly recovered to be stable, it is ensured that the gas engine stably operates under different loads, the whole device forms flow balance and stable operation, and the service life of the gas engine is prolonged. Under different gas sources and LPG component differences, effective components actually participating in combustion are accurately judged, so that the needed gas and air amount is accurately calculated, accurate mixing proportion control is achieved, and meanwhile accurate control over the mixed gas mixing process is achieved under the cooperation of an adjusting control assembly.

The invention discloses a crystalline polyaryletherketone surface grafted carbon fiber and a preparation method thereof, and belongs to the technical field of carbon materials.The preparation method comprises the following steps that an amino end-capping reagent containing sulfuryl, a difluoro monomer, a bisphenol monomer and potassium carbonate are placed in sulfolane to be subjected to a polymerization reaction, and amino-terminated polyarylether is obtained; carrying out diazonium salt reaction on the amino-terminated polyarylether and nitrite tetrafluoroborate to obtain diazonium salt-terminated polyarylether; connecting the carbon fiber with a cathode, immersing the carbon fiber in an electrolyte containing diazonium salt terminated polyarylether, and applying a reduction potential for reaction to obtain polyarylether grafted carbon fiber; and carrying out hydrolysis reaction on the carbon fiber grafted with polyarylether in an acid environment to obtain the crystalline polyaryletherketone surface grafted carbon fiber. According to the crystalline polyaryletherketone surface grafting modified carbon fiber prepared by the invention, the carbon fiber is directly connected with a polymer through high-temperature-resistant and corrosion-resistant phenyl and sulfuryl, so that the crystalline polyaryletherketone surface grafting modified carbon fiber has better high-temperature resistance and corrosion resistance.

The invention discloses a water jet assisted laser-electrochemical combined machining method which comprises the following steps: pre-treating a nickel-based superalloy to be machined, and fixing the nickel-based superalloy on a machining table; a machining area is positioned, parameters of water jet assisted laser and electrochemical machining are set, so that during laser machining, water jet cools the machining area and removes slag, and an electrolyte does not affect a non-machining area; meanwhile, water jet assisted laser and electrochemistry are started to machine the nickel-based superalloy, and the machining state is monitored in real time; and after composite machining is completed, the nickel-based high-temperature alloy is cooled. By accurately setting laser, water jet and electrochemical machining parameters, the efficient synergistic effect of the laser, water jet and electrochemical machining parameters in a machining area is ensured, the machining precision and the surface quality are effectively improved, the defects of heat affected zones, microcracks, recast layers and the like are remarkably reduced, and the machining quality is improved. And meanwhile, corrosion to a non-machining area is reduced through the mode of spraying the electrolyte in a pulse mode.

The invention relates to the technical field of cement clinker preparation, and particularly discloses a calcium sulphosilicate mineral clinker with high carbonization activity, a raw material and a preparation method and a hardening method of the calcium sulphosilicate mineral clinker. The clinker is prepared from the following mineral phases: 87.2 to 95.1 percent of calcium sulphosilicate, 2.6 to 9.5 percent of dicalcium silicate and the balance of unreacted raw materials, inevitable impurities and the like. Part of calcium elements in crystal lattices of the calcium sulphosilicate are replaced by at least one of lithium elements, sodium elements, potassium elements and strontium elements. The hardening method comprises the following steps: mixing the calcium sulphosilicate mineral clinker with water, and curing in a carbon dioxide environment to obtain the calcium sulphosilicate mineral hardened body. The mineral clinker disclosed by the invention has excellent carbonization activity, so that the mineral clinker can react with carbon dioxide to obtain high strength, high carbon sequestration is realized, carbon emission is reduced, and the mineral clinker has excellent mechanical properties.

The invention provides analcime based on alkali grinding activation as well as a preparation method and application of the analcime. The preparation method of analcime comprises the following steps: S1, providing lithium slag; s2, ball-milling the solid material and water together to obtain a ball-milled product; the solid material comprises the lithium slag and an alkaline auxiliary material, and the alkaline auxiliary material comprises one or more of sodium hydroxide and potassium hydroxide; s3, mixing the ball-milled product with an alkaline solution to obtain a to-be-treated solution; performing hydro-thermal treatment on the to-be-treated liquid to obtain reaction liquid; and S4, carrying out solid-liquid separation on the reaction liquid to obtain a solid isolate containing analcime. The analcime with high crystallinity and high yield can be obtained, a new way is provided for preparation of the analcime, and a new way is also provided for resourceful treatment of the lithium slag.

The invention discloses a low-loss resin composition, which is prepared from the following main components in parts by weight: 10 to 90 parts of acenaphthylene-p-vinylbiphenyl copolymer, 10 to 70 parts of cross-linking agent, 20 to 60 parts of elastomer, 0.1 to 3 parts of initiator and 10 to 90 parts of filler. The acenaphthylene-p-vinylbiphenyl copolymer is obtained by pre-polymerizing acenaphthylene and divinylbiphenyl, the acenaphthylene monomer residue is less, the acenaphthylene monomer is difficult to volatilize in a resin system, implosion caused by too fast curing reaction of the resin system is prevented while good reaction activity is maintained, and a subsequent curing product is high in crosslinking density and good in heat resistance; a machining window is wide, and subsequent production and machining are facilitated; and an acenaphthylene structure has high symmetry and rigidity and does not contain elements such as oxygen, sulfur and nitrogen, so that the resin composition has excellent dielectric properties and thermal properties and a low thermal expansion coefficient, and an elastomer as a cross-linking curing matrix material can provide the characteristics of low dielectric constant, low dielectric loss, low water absorption and the like.

The invention discloses a magnesium-based cobalt precipitation agent and a preparation method and application thereof, and relates to the technical field of composite materials. The method comprises the following steps: performing calcination dissociation, enhanced leaching, carbonization separation, efficient pyrolysis, solid-liquid separation, drying and calcination on first magnesium ore to obtain active magnesium oxide; the second magnesium ore is subjected to calcination dissociation, hydration impurity removal, solid-liquid separation and low-temperature calcination, and then high-purity magnesium oxide is obtained; performing series-parallel modification on active magnesium oxide and high-purity magnesium oxide to obtain a magnesium-based cobalt precipitation agent; the mass ratio of the active magnesium oxide to the high-purity magnesium oxide is 1: (2-10), the modifier is quaternary ammonium salt organic powder, and the addition amount of the modifier is 0.02-1% of the total mass of the magnesium oxide. The magnesium-based cobalt precipitation agent prepared through the method is high in activity, has the advantages of being high in efficiency, low in price, low in unit consumption, environmentally friendly and the like in the aspect of nickel and cobalt precipitation through copper-cobalt ore and laterite-nickel ore wet smelting, and can greatly reduce the material cost in the nickel cobalt hydroxide production process.

The invention discloses a method for preparing low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin, and belongs to the technical field of organic polymer materials. The low-viscosity vinyl fluorine-containing hyperbranched organic silicon resin is prepared by taking a vinyl-containing siloxane monomer, an alkyl-containing siloxane monomer and a fluorine-containing siloxane monomer as raw materials through hydrolysis nucleation, condensation growth, end capping and purification treatment. Wherein the content of vinyl is not lower than 3 wt%, the content of fluorine is not lower than 15 wt%, and the viscosity is not higher than 1000 mPa.s. The vinyl fluorine-containing hyperbranched organic silicon resin disclosed by the invention is used as a material with excellent characteristics of both vinyl organic silicon resin and a fluorine-containing polymer, the existence of vinyl can be suitable for various reaction conditions, the existence of a fluorine-containing group enables the vinyl fluorine-containing hyperbranched organic silicon resin to have excellent hydrophobic and oleophobic properties, and meanwhile, the fluorine-containing polymer material is relatively small in friction coefficient, so that the vinyl fluorine-containing hyperbranched organic silicon resin can be applied to various reaction conditions. The method has great application potential in the fields of oil-resistant sealing, anti-corrosion coatings, electronic materials, medical apparatuses and instruments and the like.

The invention relates to the technical field of nano catalytic materials, in particular to a preparation method and application of a nano bowl-shaped molybdenum-doped metal cobalt phosphide catalyst. The preparation method comprises the following steps: S1, preparing CoMo-MOF; S2, preparing Mo-CoP; according to the application method, the nanometer bowl-shaped molybdenum-doped metal cobalt phosphide catalyst is applied to the process of catalyzing water electrolysis hydrogen absorption and oxygen absorption reaction. According to the preparation method, the Mo-doped metal organic framework is adopted as a precursor, the target catalyst is prepared through phosphating and calcining, due to the fact that the valence state of Co in cobalt phosphide is improved through molybdenum doping, the intrinsic catalytic activity of the catalyst is improved, and electrolysis of water can be effectively catalyzed.

The invention belongs to the field of wastewater treatment. The invention provides a manganese-carbon composite controlled-release material as well as a preparation method and application thereof. The manganese-carbon composite controlled-release material comprises the following components: a manganese-rich mineral, a natural plant carbon source, a cementing material, aggregate, an additive and a foaming agent. The manganese-carbon composite controlled-release material disclosed by the invention can regulate and control the carbon release and manganese circulation process by virtue of the interaction between manganese and carbon, so that the electron transfer and mass transfer efficiency is remarkably improved, synergistic denitrification is realized, the overall denitrification efficiency is remarkably improved, and synchronous nitrogen and phosphorus removal and self-adaptive continuous denitrification are realized. The raw materials required for preparing the manganese-carbon composite controlled-release material are environment-friendly and low in price, the preparation process is simple, the preparation cost is low, and the manganese-carbon composite controlled-release material can be applied to filler in a submerged area of an artificial wetland, a biological filter and a biological retention system, and can be widely applied to application scenes such as tail water advanced treatment of a sewage treatment plant, rural agricultural sewage treatment and initial rainwater purification.

The invention discloses a preparation method of a perovskite type high-temperature-resistant CO2 methanation catalyst, which comprises the following steps: firstly, preparing CaZrO3, then dissolving CaZrO3 powder, a nickel source, a soluble organic fuel and a certain amount of ethylene glycol in deionized water according to a molar ratio of 1: (0.2-0.8): (0.1-0.5), stirring to obtain a dispersion liquid, then putting carrier monoclinic ZrO2 powder in the dispersion liquid, and stirring to obtain the perovskite type high-temperature-resistant CO2 methanation catalyst. The preparation method comprises the following steps: uniformly mixing the raw materials, carrying out ultrasonic treatment for 5-12 hours, heating the obtained mixture at 300-550 DEG C until spontaneous combustion, carrying out high-temperature calcination at 800-900 DEG C for 1-2 hours after flame is extinguished, collecting the calcined product, and carrying out ball milling and granulation to obtain the NiO-CaZrO3 / ZrO2 catalyst with a certain mesh number. According to the preparation method of the catalyst, a solution combustion method is introduced in the preparation process, so that active components of the prepared catalyst are fully dispersed, and further high-temperature calcination is performed on the basis, so that the active components are stably anchored on the surface of the ZrO2 carrier, and the catalytic activity and the stability of the catalyst are improved.

The invention relates to the field of building materials, and particularly discloses a coal gangue activation treatment method, prepared calcined coal gangue and application, the treatment method comprises the following steps: pretreatment: crushing and screening coal gangue to obtain coal gangue particles; the coal gangue particles are treated in a eutectic solvent, ultrasonic-assisted treatment is carried out for 2-3 h, pretreated coal gangue is obtained after water washing, the eutectic solvent comprises an HBA component and an HBD component, the HBA component is a mixture of choline chloride and an amide compound, and the HBD component is a mixture of a carboxylic acid mixture and polyhydric alcohol; calcining: calcining the pretreated coal gangue at 400-450 DEG C to obtain calcined coal gangue, the invention also discloses the calcined coal gangue prepared by the method, and the method has the characteristic of realizing coal gangue activation treatment under lower energy consumption.

The invention provides a method for extracting lithium by leaching spodumene. The method comprises the following steps: roasting a mixture of spodumene concentrate and a roasting aid to obtain roasted clinker; and under the condition that an external field is applied, acid leaching is conducted on the roasted clinker, solid-liquid separation is conducted, and lithium leaching liquid and spodumene smelting slag are obtained. According to the method, roasting transformation is optimized through a process route of combining one-step additive roasting transformation with external field enhanced leaching lithium extraction, the process flow is shortened, meanwhile, external field synergistic enhanced leaching is adopted, and efficient leaching of the lithium element in spodumene and selective leaching of the lithium element are achieved.

The invention discloses a tannic acid modified lignin phenolic resin antibacterial adhesive and a preparation method thereof, and belongs to the technical field of bio-based adhesives. Alkali lignin is used as a raw material to prepare lignin nano-particles, then ferric trichloride and tannic acid are used for modifying the lignin nano-particles, and the tannic acid modified lignin phenolic resin antibacterial adhesive is prepared. Gallotannic acid / iron complexed lignin nano-particles are obtained, the gallotannic acid / iron complexed lignin nano-particles, phenol, formaldehyde and alkali liquor are mixed, and the lignin phenolic resin adhesive is prepared through an addition condensation reaction. The lignin phenolic resin adhesive prepared by the invention can realize high-proportion phenol substitution, has a good photo-thermal antibacterial effect, and provides a new way for development of an antibacterial environment-friendly adhesive.

The invention relates to a method for continuously preparing a single-walled carbon nanotube, which comprises the following steps of: uniformly mixing organic metal and a growth promoter in proportion to form a catalyst, adding the catalyst into a dust spraying device, connecting each gas pipeline and a preheating furnace inlet, connecting an outlet of the preheating furnace with a vertical tube furnace, and sealing the whole device; firstly introducing inert gas to remove air, then preheating the furnace, and heating the vertical tube furnace; after the temperature is stable, the injection device injects a catalyst into the preheating furnace, the preheating furnace and the vertical tube furnace are kept at the constant temperature, and the single-walled carbon nanotubes continuously grow; after the catalyst is consumed, stopping gas supply, turning off a power supply, and taking a sample at room temperature. The catalyst is fully preheated before entering a vertical tube furnace, and the reaction activity of the catalyst reaches the highest; the temperature in the furnace chamber of the reactor is constant, organic gas is fully contacted with a catalyst, carrier gas and reducing gas and is uniformly heated, and continuous growth of the carbon nanotubes is facilitated; the energy consumption is low, the occupied area is small, the operation is simple, continuous production can be realized, the productivity is high, the length-diameter ratio is large, the G / D value is large, and the specific surface area is large.

The invention relates to the technical field of nano material preparation, and provides a molybdenum powder preparation method and molybdenum powder.The molybdenum powder preparation method comprises the steps that original molybdenum trioxide is subjected to thermal shock treatment, and treated molybdenum trioxide is obtained; the defect of the treated molybdenum trioxide is higher than that of the original molybdenum trioxide; adding the treated molybdenum trioxide and a water-soluble carbon source into a solvent, and carrying out ultrasonic dispersion and ball milling treatment to obtain mixed slurry; dehydrating and drying the mixed slurry to obtain precursor powder of organic carbon coated molybdenum trioxide; performing inert atmosphere reduction treatment on the precursor powder to obtain molybdenum dioxide; carrying out gas reduction deoxidation treatment on the molybdenum dioxide to obtain molybdenum powder; and the particle size of the molybdenum powder is nanoscale. The method disclosed by the invention can be used for preparing the nano molybdenum powder with narrow particle size distribution.

The invention discloses polylactic acid polyol as well as a preparation method and application thereof. The preparation method comprises the following steps: performing a heating reaction on zinc salt, organic ammonium salt and bis (ethylene carbonate) ether to prepare an in-situ catalyst; anions of the organic ammonium salt are selected from any one of bromide ions, chloride ions and iodide ions; and adding a lactide monomer, and carrying out polymerization reaction to obtain the polylactic acid polyol. The polylactic acid polyol prepared by the invention has a flexible chain segment, can provide better flexibility, and can be applied to preparation of a polyurethane material.

The invention provides a biochar loaded sulfur modified zero-valent iron material and application thereof in groundwater remediation, and particularly relates to the technical field of inorganic materials. According to the biochar-loaded sulfur-modified zero-valent iron material, sulfur-modified zero-valent iron is loaded in a porous structure of biochar; the sulfur modified zero-valent iron has a core-shell structure; wherein the inner core of the core-shell structure is zero-valent iron, and the outer shell of the core-shell structure is iron sulfide. According to the biochar-loaded sulfur-modified zero-valent iron material provided by the invention, a sulfide layer is formed on the surface of zero-valent iron, so that a zero-valent iron core is prevented from being in direct contact with water or dissolved oxygen, and the durability of the zero-valent iron core is improved. Delocalized electrons in the sulfide layer promote the electron transfer process, and the catalytic performance of the material is enhanced. The biochar loaded sulfur modified zero-valent iron material provided by the invention is high in stability and wide in application range. Due to the multifunctionality of the material, the material has potential application value in a plurality of fields such as environmental restoration and pollutant degradation.

The invention discloses a supported high-entropy metal catalyst as well as a preparation method and application thereof. The supported high-entropy metal catalyst comprises a carrier and an active metal component supported on the carrier, the active metal component at least contains Cu, and simultaneously contains a combination of at least four of Fe, Ni, Co, Mn, Ru, Pt and Pd; in the active metal component, the molar weight of each metal element is 5-50% of the total molar weight of the active metal component; in the supported high-entropy metal catalyst, the mass of the active metal component accounts for 5-30% of the total mass of the supported high-entropy metal catalyst. According to the supported high-entropy metal catalyst provided by the invention, due to the combination of various elements, the system entropy is increased, and the metal activity and selectivity are modulated through the interaction of electrons among metals, so that the supported high-entropy metal catalyst has excellent reaction activity, stability and heat absorption acting performance in a multi-component alcohol-water reforming reaction.

The invention relates to the field of cable materials, and discloses a flame-retardant anti-aging cable material and a preparation method thereof.The flame-retardant anti-aging cable material is prepared from, by weight, 45-70 parts of nitrile rubber, 20-40 parts of natural rubber, 7-12 parts of modified carbon nanotubes, 5-10 parts of composite filler, 3-5 parts of nano-zinc oxide, 2-4 parts of stearic acid, 1-3 parts of sulfur and 0.1-0.5 part of accelerant; the modified carbon nano tube is prepared by modifying a flame retardant and p-phenylenediamine on the surface of a carbon nano tube through a chemical reaction; the composite filler is prepared by taking a titanium dioxide nanosheet as a carrier and growing silicon dioxide nanoparticles in situ, and the cable material is endowed with excellent mechanical properties, flame retardance and ageing resistance by adding the modified carbon nanotubes and the composite filler.

The invention relates to dithiolane modified beta-cyclodextrin, a preparation method thereof and application of the dithiolane modified beta-cyclodextrin as a drug carrier. The method comprises the following steps: carrying out acylation reaction on beta-cyclodextrin and lipoic acid, and modifying different numbers of dithiolane on the beta-cyclodextrin by changing a feeding ratio; the beta-cyclodextrin has a plurality of hydroxyl groups, and the activity of the hydroxyl groups at the C6 position is relatively high. The hydrophobic cavity of the dithiolane-modified beta-cyclodextrin can be loaded with a hydrophobic small-molecule drug, and the hydrophobic small-molecule drug can be loaded into the dithiolane-modified beta-cyclodextrin under the condition of heating reflux to form a nano-drug. The disulfide bond on the surface of the nano-drug and sulfydryl on protein or lipid on the outer side of a cell membrane are subjected to dynamic covalent thiol exchange, so that the nano-drug enters cells through a thiol-mediated cellular uptake way, endosomes and lysosomes can be avoided, the drug is quickly and directly delivered to the cytoplasm, degradation of the drug in the lysosomes is reduced, and the drug delivery efficiency is improved. The utilization rate of small-molecule drugs is improved, side effects are reduced, and better curative effects are achieved.

The invention belongs to the technical field of light-emitting materials, and particularly relates to a near-infrared light-emitting ytterbium-doped quantum dot material and a preparation method and application thereof. According to the preparation method of the near-infrared light-emitting ytterbium-doped quantum dot material, a Yb-doped perovskite quantum dot synthesis method which is high in near-infrared light-emitting intensity, good in stability and simple in preparation is innovatively provided, short-chain amine is used in the preparation process, and the near-infrared light-emitting ytterbium-doped quantum dot material has high reaction activity, small steric hindrance and high near-infrared light-emitting efficiency. The complex ability with precursor raw materials is low, chemical bonds between halogen and metal ions are easy to open in the reaction process, and the complex is matched with long-chain amine (such as oleylamine and the like) in a perovskite quantum dot system prepared by a conventional injection method, so that doping of rare earth Yb ions is facilitated, the Yb ions smoothly enter perovskite crystal lattices, and the perovskite quantum dot is prepared. The near-infrared luminous intensity of the material is improved.

The invention relates to daily chemical and pharmaceutical industries, in particular to a guanidyl-containing carboxymethyl chitosan quaternary ammonium salt derivative as well as a preparation method and application thereof. The chemical structural formula of the guanidyl-containing carboxymethyl chitosan quaternary ammonium salt derivative is shown in the specification. The prepared guanidyl carboxymethyl chitosan-containing quaternary ammonium salt derivative has good antioxidant activity and can be applied to preparation of an antioxidant, the preparation method is simple, convenient and efficient, the biological activity of chitosan is enhanced, the application range of chitosan is widened, and the guanidyl carboxymethyl chitosan-containing quaternary ammonium salt derivative can be widely applied to the fields of cosmetics, functional food and medicine. # imgabs0 #

The invention provides a preparation method of magnesium niobate, which comprises the following steps: carrying out wet ball milling on MgO and Nb2O5, uniformly mixing, and drying to obtain mixed powder; the mixed powder is heated to 1500-1700 DEG C for 1-3 h and then subjected to water quenching, and solid particles of a core-shell structure inclusion are obtained; and heating the solid particles to 1000-1200 DEG C, and carrying out heat preservation to obtain the magnesium niobate. Solid particles of a core-shell structure inclusion are formed through a water quenching process, then MN obtained through rapid heating sintering is high in purity and stability, Mg < 2 + > and Nb < 5 + > in the MN are high in uniformity and large in reaction activity, sufficient mixing with PbO and TiO2 at a high temperature is facilitated to form a liquid phase, the formed raw material for PMNT crystal growth is better in singleness and uniformity, and the preparation method is simple and easy to implement. Furthermore, the PMNT single crystal with a single perovskite structure, high purity and excellent piezoelectric property can be obtained, and the yield is improved.

The invention discloses carbonized and activated steel slag, a preparation method and application of the carbonized and activated steel slag in preparation of cement clinker. The preparation method of the carbonized and activated steel slag comprises the following steps: activating steel slag by adopting an activating solution, adjusting the pH value to 7-8 after first stirring, and then performing second stirring, filtering, washing, drying, grinding and sieving to obtain the activated steel slag, and carbonizing the activated steel slag to obtain carbonized activated steel slag. The steel slag is subjected to chemical treatment and CO2 curing synergistic treatment, so that the existence form of CaO in the steel slag is changed into a unit from multiple elements, the existence form of CaO is optimized, the complex chemical composition of the steel slag is simplified, and the steel slag replaces limestone to serve as a raw material for calcining the cement clinker, so that the utilization rate of the limestone is reduced, and the utilization rate of the steel slag in the field of building materials is increased; the performance of the cement is also effectively improved.

The invention discloses steel slag-based single-component geopolymer mortar and a preparation method thereof. The steel slag-based single-component geopolymer mortar is prepared from the following components in parts by weight: 50 to 120 parts of steel slag powder, 30 to 50 parts of silicon-aluminum solid waste admixture, 15 to 30 parts of solid alkali activator, 250 to 500 parts of steel slag fine aggregate and 50 to 100 parts of water, the steel slag-based single-component geopolymer mortar is obtained by mechanically activating the steel slag powder, the silicon-aluminum solid waste admixture and the solid alkali activator mixture, adding the water and the steel slag fine aggregate, and stirring. According to the invention, a single-component geopolymer is prepared by utilizing a mechanical activation effect in a ball milling process and a chemical activation effect of a solid alkali activator on steel slag powder and a silicon-aluminum solid waste precursor, and then the single-component geopolymer, steel slag fine aggregate and water are subjected to mix proportion design; the strength and the working performance of the steel slag-based single-component geopolymer mortar meet the engineering practical application requirements, the cost is relatively low, and the resource utilization rate of the steel slag can be improved while carbon emission is effectively reduced.

The invention belongs to the technical field of electro-catalysis, and particularly relates to an iridium cluster-loaded gallium oxide material as well as a preparation method and application thereof. The gallium oxide material loaded with the iridium cluster comprises flaky gallium oxide and the iridium cluster loaded on the surface of the gallium oxide, wherein the mass percentage content of iridium in the gallium oxide material loaded with the iridium cluster is less than or equal to 50%. The mass percentage of noble metal Ir in the material is less than or equal to 50%, so that the cost can be reduced; in the electrocatalytic oxygen evolution reaction, after voltage is applied, the gallium oxide material (Ir (at) Ga2O3) loaded with the iridium cluster can generate an in-situ reconstructed Ga-O-Ir interface through bias-induced Ga leaching, the Ga-O-Ir interface remarkably reduces the energy barrier of the oxygen evolution reaction, the reaction activity is greatly improved, and the electrochemical performance (overpotential and cycling stability) is remarkably improved.

The invention discloses a high-strength artificial stone which is obtained by carbonating, curing and curing artificial stone slurry, the artificial stone slurry is prepared from the following raw materials in parts by mass: 40 to 60 parts of steel slag, 2 to 10 parts of cement, 70 to 120 parts of calcium magnesia, 0.04 to 0.12 part of calcium carbonate whisker, 0.01 to 0.03 part of polyphosphate, 0 to 10 parts of silica fume, 1 to 2 parts of fiber and 8 to 10 parts of water. The chemical components of the steel slag comprise silicon dioxide, magnesium oxide and calcium oxide; the mineral components of the steel slag comprise tricalcium silicate, beta-type dicalcium silicate, gamma-type dicalcium silicate, free calcium oxide and free magnesium oxide. According to the high-strength artificial stone provided by the invention, the artificial stone is fine and smooth in surface and relatively high in strength, and actual use requirements are met.