57 results about "Basic oxide" patented technology

In some implementations, a photonic transmission structure includes a first cladding structure; a first active structure disposed over the first cladding structure; and a second cladding structure disposed over the first active structure. The first active structure includes a non-alkali, oxide solution that includes a cation that is niobium.

The application discloses a preparation method of a catalyst for catalyzing directional polycondensation of acetone to produce mesitylene and isophorone, and belongs to the field of catalysis technology. The catalyst is prepared by using a co-precipitation method to prepare magnesium-aluminum-zinc composite oxides, and simultaneously introducing active components and metal modified additive components in the co-precipitation process, and then drying and calcining to obtain a finished catalyst. The application realizes efficient synergistic effect of the active metal components and the additive metal components on the composite basic oxides and adjustment of the distribution of acid and base sites of the catalyst, so that the effect of co-producing isophorone and mesitylene through directional polycondensation of acetone is achieved. The catalyst prepared by the method is suitable for catalyzing polycondensation of acetone to co-produce isophorone and mesitylene, and has the advantages of simple preparation process, high catalytic activity and good stability.

The invention relates to the technical field of foam materials, in particular to a modified polyethylene foam material and a preparation method thereof, and the modified polyethylene foam material comprises the following components: a polyethylene matrix, modified silicon dioxide aerogel, LDH-polyethylene-maleic anhydride, hydroxyapatite-stearic acid, a foaming agent, a cross-linking agent and an antioxidant. When a fire disaster occurs, LDH is heated and decomposed to form a first protective barrier, molten polyethylene liquid is prevented from permeating into pores, and redundant H < + > in a system is consumed by decomposed alkaline oxide. The phosphoaluminate inorganic network and an organic polymer generated by catalysis of ZnCl2 / FeCl3 form an organic-inorganic hybrid blocking layer, so that a second protective barrier is formed, pore gaps are flexibly filled with the organic layer, and the inorganic layer provides high-temperature stability. The stearic acid is preferentially coordinated with ZnCl2 / FeCl3 acid and is stable at the processing temperature of the foaming agent, so that the stearic acid cannot act with the foaming agent and a PE chain, and the foaming quality is guaranteed.

The present application relates to sewage treatment technical field, specifically for a kind of composite material for water pollution treatment, including traditional Chinese medicine residue-based activated carbon, ionic liquid modified titanate nanotube, basic oxide and binder, the weight ratio of traditional Chinese medicine residue-based activated carbon, ionic liquid modified titanate nanotube, basic oxide and binder is 10-30:1-5:0.5-2.5:3-6, the composite material prepared in the present application can effectively reduce the content of toxic heavy metal ions in acidic wastewater, improve pH value, and the treatment effect is remarkable and efficient.

In some implementations, a photonic transmission structure includes a first cladding structure; a first active structure disposed over the first cladding structure; and a second cladding structure disposed over the first active structure. The first active structure includes a non-alkali, oxide solution that includes a cation that is niobium.

The present invention provides a catalyst for ethylene glycol dehydrogenation to lactic acid, the general formula being M / S@C; wherein M is an active component selected from a combination of any one or more of Ru, Ir, Sn, Rh, Pd, Ag, Cd, In, and Sb; S@C is a solid base carrier, and C is a carrier selected from a combination of any one or more of Al2O3, SiO2, and ZrO2; S is a basic oxide shell coated on the surface of C, selected from a combination of any one or more of BeO, MgO, CaO, SrO, BaO, and RaO; based on the mass of C, the mass of M is 0.75-30wt% and the mass of S is 2-15wt%. Also provided are a preparation method of the catalyst and its application and method in ethylene glycol dehydrogenation to lactic acid. The catalyst can be used in ethylene glycol dehydrogenation to lactic acid, has high activity, and is suitable for use in a fixed-bed reactor.

The invention provides an E6011 type cellulose welding rod and a preparation method thereof. The welding rod comprises a core wire and a coating, and the surface of the core wire is coated with the coating in a pressed mode; the coating is prepared from, by weight, 10-15 parts of potassium titanate, 10-15 parts of rutile, 18-21 parts of microcrystalline cellulose, 3-5 parts of manganese metal, 5-10 parts of fused magnesite, 9-12 parts of iron sand, 30-35 parts of iron powder, 5-8 parts of CMC-Ca and 0.5-1 part of rare earth ferrosilicon. According to the coating, a titanium type slag system is adopted, and a composite blowing force system is constructed to stabilize electric arcs and enhance electric arc blowing force, so that welding spatter and smoke dust are reduced; the slag alkalinity is adjusted by introducing alkaline oxide and CMC-Ca, so that the liquidity of molten iron during vertical downward welding is effectively controlled, and the process adaptability and the production convenience are both considered; and the high-proportion iron powder is added to improve the deposition efficiency, sleeve carbonization is inhibited through the synergistic effect of the magnesia and the iron sand, and the re-arc striking performance of the welding rod is improved. Splashing and smoke dust amount in the welding process can be remarkably reduced, and the comprehensive welding performance is excellent.

The invention relates to the technical field of waste treatment, in particular to a method for synergistically roasting, dechlorinating and degrading dioxin and inhibiting resynthesis of dioxin by using steelmaking furnace dust and waste incineration fly ash, which comprises the following steps: S100: in a high-temperature reaction area of closed heating equipment, adding the waste incineration fly ash and electric furnace ash according to a mass ratio, co-roasting in an air atmosphere; s200, after roasting, purifying reaction tail gas and solid products by adopting a toluene solution through a gas washing bottle, capturing dioxin volatile matters, and collecting the dioxin volatile matters; s300, carrying out dioxin content detection on the roasted solid residues by adopting a gas chromatography-mass spectrometry (GC-MS) technology; on the basis of deep research on mineral phase composition of the steel-making furnace dust and the waste incineration fly ash, aiming at the problems that dioxin in the waste incineration fly ash is difficult to degrade and easy to resynthesize, the dechlorination effect of alkaline oxides in the steel-making furnace dust is innovatively utilized, and the two hazardous wastes are mixed for collaborative roasting, so that organic chlorine is converted into inorganic chlorine salt; the dioxin is efficiently degraded, and the resynthesis of the dioxin is also avoided.

The invention relates to the technical field of fine chemical engineering, and provides a method for synthesizing dipentaerythritol and a composite material thereof. The amino-rich mesoporous molecular sieve and alkaline oxide are mixed in proportion to adsorb formaldehyde, and the reversible formaldehyde-loaded composite material is obtained. In the reaction process, acetaldehyde or acetaldehyde-formaldehyde mixed liquid is put into a reactor at a time, the composite material is added, then alkali liquor is added into a system continuously or in batches at a controlled rate, formaldehyde is slowly released from the composite material and enters the reaction system, condensation reaction is conducted on the formaldehyde and acetaldehyde under the low-temperature condition, and dipentaerythritol is directionally generated. After the reaction is finished, the composite material is filtered and recycled, and can be recycled after being roasted.

The invention relates to a multifunctional efficient low-cost electroslag remelting new slag system and a smelting method, and belongs to the technical field of electroslag metallurgy. The slag system comprises the following components in percentage by mass: 60%-80% of CaF2, 20%-30% of Al2O3, 5%-15% of MgO and 1%-5% of CeO2. The slag system is located in an eutectic area by accurately regulating and controlling the proportion of basic oxides such as CaF2, Al2O3 and MgO, and the metallurgical performance of the slag system is remarkably improved. Meanwhile, due to the existence of MgO, the slag system can form a stable protection layer to cover the surface of a molten pool, oxygen is effectively isolated, the situation that Y is directly exposed in air is reduced, and then the oxidation and volatilization loss of Y is greatly reduced. A trace amount of rare earth element CeO2 is added as an active additive, and the unique electronic structure characteristic of the rare earth element CeO2 is utilized, so that the selective adsorption capacity and the transmission rate of a slag system to Y ions are enhanced, the migration speed of the Y ions into a new metal phase is accelerated, and the overall recovery rate of Y is improved.

The application discloses a closed loop process for synchronously increasing the value of silicon and fluorine components in silicon tetrafluoride, and belongs to the technical field of fluorine-containing silicon byproduct resource utilization. The steps are as follows: 1) mixing anhydrous alcohol with triethylamine, and introducing silicon tetrafluoride gas at 0-30 DEG C to generate alkyl orthosilicate and triethylamine monohydrofluoride; 2) distilling the reaction liquid to recover alcohol, performing vacuum rectification to obtain alkyl orthosilicate product, and separating to obtain triethylamine monohydrofluoride; 3) adding triethylamine monohydrofluoride into water, and performing heating reflux reaction with inorganic alkali or basic oxide to separate to obtain triethylamine crude product and fluorinated metal salt; 4) after dehydration rectification, the triethylamine crude product is recycled to step 1) with recovered alcohol; and the fluorinated metal salt is post-treated to obtain high-purity fluorinated metal salt. The process has low reaction temperature, high alkyl orthosilicate yield, recyclable triethylamine, all fluorine solidified into high-value-added products, no three-waste emissions, and can be continuously industrialized.

The invention discloses a coating for high-performance light-weight carbon fibers and a preparation method of the coating, and belongs to the technical field of functional materials, nano titanium dioxide is taken as a carrier, manganese dioxide is generated on the surface, core-shell functional powder is formed, the surface roughness and reaction sites of the core-shell functional powder are increased, then zinc doping is carried out, and the high-performance light-weight carbon fibers are obtained. Then manganese and zinc are used as catalytic sites, acetylene is used as a carbon source, carbon nanotube coating is generated on the surface of the core-shell functional powder in situ, zinc oxide is dissolved out as a basic oxide during acid pickling in a concentrated nitric acid solution, a porous structure is formed, the rough porous core-shell functional powder is obtained, and the special core-shell structure can be used for preparing the porous core-shell functional powder through an intermolecular slippage mechanism. Stress is dispersed, and the mechanical strength of the coating is improved.

The present invention relates to a process for comprehensively recovering valuable metals from cobalt-rich waste. Cobalt silicate in the waste is converted into sodium cobalt silicate through sodium carbonate roasting pretreatment, cobalt ferrite is converted into cobaltous oxide and ferric oxide, and composite oxides of tungsten, tantalum, and niobium are converted into soluble sodium salts such as sodium tungstate and sodium chromate. These are then separated from alkaline oxides such as cobaltous oxide in a subsequent water leaching process. Cobalt, iron, and copper in the water leaching residue are leached into a solution through sulfuric acid reduction leaching, while metals such as tantalum and niobium are contained in the acid leaching residue. Tungsten and chromium in the water leaching solution are separated by concentrated hydrochloric acid neutralization followed by tungsten precipitation followed by chromium reduction precipitation. This process has the advantages of a high elemental leaching rate and high separation efficiency of cobalt from elements such as tungsten and chromium. Furthermore, the process is simple, the reaction conditions are mild, and the raw materials used are inexpensive. It can achieve comprehensive recovery of elements such as cobalt, tungsten, and tantalum.

The present application relates to the technical field of fine chemical industry, and provides a method for synthesizing dipentaerythritol and a composite material thereof.Ammonia-rich mesoporous molecular sieve is mixed with alkaline oxide in proportion, and then formaldehyde is adsorbed to obtain a composite material reversibly loaded with formaldehyde.In the reaction, acetaldehyde or a mixed solution of acetaldehyde and formaldehyde is put into a reactor at one time, the above composite material is added, and then an alkali solution is continuously or in batches added to the system at a controlled rate, formaldehyde is slowly released from the composite material into the reaction system, and the condensation reaction of acetaldehyde and formaldehyde occurs under low-temperature conditions to directionally generate dipentaerythritol.After the reaction is completed, the composite material is recovered by filtration and can be recycled after calcination.

The invention discloses a preparation method of an iron-molybdenum hydrogenation catalyst for coke-oven gas hydrogenation fine desulfurization, and particularly relates to the technical field of preparation of a catalyst for coal chemical gas purification. The invention aims to solve the core problem that the service life of the existing catalyst is only 3-5 months due to micropore blockage caused by tar carbonization in coal gas. The catalyst takes basic oxide modified gamma-Al2O3 as a carrier (neutralizing the strong acidity of traditional aluminum oxide and inhibiting tar adsorption), active components are precursor ferric nitrate, precursor ammonium heptamolybdate and an anti-carbon deposition component (CeO2 or ZrO2), and tartaric acid of which the dispersity is superior to that of citric acid is adopted as a competitive adsorption aid; in the preparation process, the beta acid site strength is reduced through segmented roasting at the high temperature of 600-700 DEG C, and carbon deposition generation sites are reduced; accurate prevulcanization is adopted, so that the structural stability of the catalyst is further optimized. The organic sulfur conversion rate of the catalyst is greater than or equal to 97.5%, the continuous operation life is prolonged to 12-18 months, the catalyst can be efficiently used for pretreatment of raw material gases such as preparation of methanol from coke-oven gas, synthesis ammonia and the like, and deep removal of organic sulfur and long-acting operation of the catalyst are realized.

A flux for electroslag welding used for electroslag welding may include a basic oxide, an amphoteric oxide, an acidic oxide, and a fluoride. With respect to a total mass of the flux, the basic oxide may include 5.1 mass % or more and 30.0 mass % or less of CaO, the acidic oxide includes 17 mass % or less of SiO2, and the fluoride includes 35 mass % or more and 73 mass % or less of CaF2. A content of the CaO is 30 mass % or more with respect to a total mass of the basic oxide, a content of the SiO2 is 80 mass % or more with respect to a total mass of the acidic oxide, a content of the CaF2 is 80 mass % or more with respect to a total mass of the fluoride, and a value of (2×[CaF2]+[CaO]) / [SiO2] is 5 or more and 56 or less.

This application relates to the field of hydrogen production technology through water electrolysis, and discloses an integrated membrane electrode for pure water electrolysis. The membrane electrode consists of a proton exchange membrane, a composite catalyst layer, and a three-dimensional continuous platinum metal network at the interface. The composite catalyst layer is made of a non-precious metal catalyst, hydroxylated basic oxides, and anion exchange resin. Its preparation involves introducing a platinum particle layer at the interface followed by in-situ reconstruction, allowing the platinum to dynamically dissolve and redeposit, forming a conductive network anchored across both sides of the interface. The three-dimensional continuous platinum network significantly reduces the interfacial contact resistance, and mechanical interlocking enhances interfacial stability. The hydroxylated oxides create a locally weakly alkaline environment, which, combined with the barrier effect of the platinum network, enables the non-precious metal catalyst to operate stably under pure water conditions. Simultaneously, the platinum network catalyzes the oxidation of permeated hydrogen, suppressing the risk of hydrogen embrittlement. This application ultimately achieves highly active, low-cost, and highly safe pure water electrolysis.

The invention relates to a diaphragm, an electrochemical device and an electric device, and belongs to the technical field of electrochemical energy storage. The diaphragm provided by the invention comprises a base material and a functional coating arranged on at least one side surface of the base material, the functional coating comprises a functional material, and the functional material is of a core-shell structure and comprises a core layer and a shell layer; the core layer comprises a metal-organic framework material, and the shell layer comprises silicon dioxide and a basic oxide. According to the diaphragm, the functional material is introduced into the functional coating, so that electrolyte decomposition can be effectively inhibited, the interface chemical stability of the diaphragm and the electrolyte is improved, the cycle life of the battery is prolonged, and the high-rate performance of the battery is improved.

This invention provides a low-halogen alkaline oxide composite additive for industrial silicon submerged arc furnaces and its application method. The additive contains at least magnesium and calcium source components, respectively, based on MgO and CaO equivalents. The fluxing and reinforcing component is selected from alkali metal oxides or alkaline earth metal oxides. The additive is added at a rate of 0.03-1% based on silica mass, and the halide content, based on Cl, is ≤0.5%. Using this additive can effectively reduce the softening temperature of siliceous raw materials and the reaction resistance in the furnace, reducing unit power consumption by 2-20% and increasing the daily output of the submerged arc furnace. Simultaneously, under the constraint of low halogen content, the chloride content of the microsilica powder does not increase. The calcium source component can be provided by industrial solid waste such as calcium carbide dust / calcium carbide slag and is compatible with the magnesium source, achieving stable smelting results under the condition of meeting the equivalent ratio. This invention is also applicable to the smelting of silicon-based ferroalloys such as ferrosilicon in submerged arc furnaces, helping to improve furnace stability and iron tapping smoothness.

Disclosed are a composite glass composition for washing and cleaning and a method for producing composite glass powder using the same, in which a silicate-based glass composition containing an alkali oxide for activating water into alkaline water and a bleaching agent having bleaching performance are mixed or coated. Accordingly, since the silicate-based glass composition containing an alkali oxide can ionize water in place of a surfactant contained in existing synthetic detergents, washing and cleaning capacity equivalent to or greater than existing synthetic detergents can be secured with alkaline water ionized from water.

The application discloses a method for improving the soluble zinc rate of zinc calcine, and belongs to the technical field of zinc metallurgy. The method for improving the soluble zinc rate of zinc calcine comprises the following steps: mixing high-temperature zinc calcine and an activating agent to obtain primary treated sand; and performing reduction treatment on the primary treated sand by using a reducing gas in an inert gas atmosphere to obtain modified zinc calcine; and the activating agent is a mixture of a sulfate and an alkaline oxide. Through the selection of the activating agent, the structure of the insoluble compounds such as zinc ferrite and zinc silicate in the zinc calcine can be broken, and the bound zinc element can be released, so that the soluble zinc rate of the zinc calcine can be greatly improved.

The application discloses a coating for high-performance light-weight carbon fibers and a preparation method thereof, and belongs to the technical field of functional materials. The coating uses nano titanium dioxide as a carrier, generates manganese dioxide on the surface, forms a core-shell functional powder, thereby increasing the roughness and reaction sites of the surface of the core-shell functional powder, and then the core-shell functional powder is doped with zinc. Then, using manganese and zinc as catalytic sites and acetylene as a carbon source, carbon nanotubes are generated in situ on the surface of the core-shell functional powder. When the core-shell functional powder is pickled in a concentrated nitric acid solution, zinc oxide as an alkaline oxide is dissolved out, a porous structure is formed, and a rough porous core-shell functional powder is obtained. The special core-shell structure can disperse stress through a molecular sliding mechanism, thereby improving the mechanical strength of the coating.

The invention provides a magnetic composite fluid polishing solution and a preparation method thereof, and belongs to the technical field of recovery and treatment of industrial waste residues. The magnetic composite fluid polishing solution provided by the invention comprises the following components in percentage by mass: 20-50% of carbonyl iron powder, 5-15% of modified nickel slag, 7-20% of abrasive particles, 1-5% of cellulose and 30-50% of magnetic fluid, the preparation method of the modified nickel slag comprises the following steps: mixing nickel slag with alkaline oxide to obtain pretreated nickel slag; and the pretreated nickel slag is subjected to melting oxidation, and the modified nickel slag is obtained. According to the method, the nickel slag is mixed with the alkaline oxide, the alkalinity of the nickel slag is adjusted, and subsequent melting oxidation of the nickel slag is facilitated; and then melting oxidation is carried out, ferromagnetic particles in the nickel slag are reduced, the modified nickel slag is obtained, carbonyl iron powder is partially replaced with the modified nickel slag, and the additional value of the nickel slag can be increased on the basis that the polishing effect of the magnetic composite fluid polishing solution is guaranteed.

The application discloses a glass melting furnace flue gas decontamination device, belonging to the technical field of tail gas treatment. The device comprises a flue gas conditioning tower, a ceramic tube dust collector, a denitration reactor, a second waste heat boiler section and a desulfurization tower connected in sequence through a flue. The device further comprises a first waste heat boiler section, which is located upstream of at least one of the flue gas conditioning tower, the ceramic tube dust collector or the denitration reactor in the conveying direction of the flue gas. The application is based on the process sequence of dust removal, denitration and desulfurization, and removes acidic gases and adsorbs basic oxides first to facilitate dust removal. Thus, the denitration process can avoid the blockage and poisoning of the denitration catalyst and the erosion of the catalyst by dust to improve the denitration efficiency. In the desulfurization process, the slurry poisoning phenomenon is also avoided to improve the desulfurization efficiency. The device can be operated synchronously with the main body of the melting furnace at 100%, that is, the ultra-low emission of pollutants can be realized.

The invention belongs to the technical field of refractory materials, and discloses an alkali-corrosion-resistant refractory castable for a chemical waste liquid incinerator and a preparation method thereof.The preparation method comprises the steps that sintered mullite, andalusite and binding clay serve as raw materials, boron-containing material powder, a dispersing agent and a coagulation accelerator are added, the mixture is mixed and then placed in a stirrer to be subjected to dry mixing, a proper amount of water is gradually added in the stirring process, and the mixture is stirred to be uniform; performing wet mixing until the aggregate and the powder are fully mixed, pouring the slurry into a mold on a vibration table, performing mold-carrying natural curing, demolding to obtain a blank, and performing drying and heat treatment on the blank to obtain the alkali-corrosion-resistant refractory castable for the chemical waste liquid furnace. The raw materials are simple, the production efficiency is high, the boron-containing material powder is introduced into the refractory castable, the viscosity of alkali-containing melt is improved by utilizing the special abnormal boron phenomenon when the boron-containing material powder makes contact with alkaline oxide, a compact high-viscosity phase formed on the surface of the refractory at the high temperature hinders erosion and permeation of the alkali melt, the excellent effect of alkali corrosion resistance is achieved, and the service life of the refractory castable is prolonged. And the service life of the lining of the incinerator is prolonged, and wide application prospects are achieved.

The invention discloses a method for preparing a high-strength composite core-shell carbon material by combining biomass with oily sludge, which comprises the following steps: crushing biomass, and sequentially carrying out grinding modification and primary pyrolysis on alkaline oxide to obtain pyrolytic oil, pyrolytic gas and modified semicoke; the pyrolytic oil, the oily sludge and the clay are blended and stirred and then are mixed and stirred with the modified semi-coke, and then the mixture is subjected to pyrolysis at 450-750 DEG C to obtain the composite core-shell carbon material which contains an active component for removing CO2, has the characteristic of high strength and can be used as a catalyst for CO2 capture and conversion or a proppant raw material in an oil field production process. The obtained pyrolysis oil can be recycled, pyrolysis gas incineration provides energy for the pyrolysis furnace, not only are environmental pollution and dependence on fossil energy reduced, but also the characteristics of agriculture and forestry waste biomass and oily sludge are fully utilized, resource application of organic waste is achieved, a high-quality carbon material is obtained, and the method has a wide application prospect.

The application belongs to the technical field of lithium ion battery materials, and discloses a dry multi-component coating method for high-nickel positive electrode materials. Two-stage solid-phase material coating treatment is performed on the surface of the high-nickel positive electrode material, weak-acid solid-phase material is coated in the first stage, and alkaline oxide, hydroxide or neutral salt is coated in the second stage. The weak-acid solid-phase material coated in the first stage can not only reduce residual alkali content, but also form a tightly contacted coating layer on the surface of the high-nickel positive electrode material, so as to limit the dissolution of residual alkali and the damage of the substrate in subsequent operation processes; the coating in the second stage further forms a tightly transition layer on the surface of the positive electrode material, which is beneficial to lithium ion transmission and is also a protective structure; the heating temperature of the coating in the first stage and the coating in the second stage is relatively low, which is beneficial to saving heat energy cost.