74 results about "Basic oxide" patented technology

To provide: a barrier film which, when used in a wavelength conversion sheet, can attain both a high retention of luminance and a reduction in unevenness of color; and a wavelength conversion sheet and a backlight member that employ the barrier film.SOLUTION: The barrier film comprises a resin substrate, a first vapor-deposited aluminum oxide film, a first coating layer, a second vapor-deposited aluminum oxide film and a second coating layer, which are laminated in this order. The first and second coating layers are each a cured product of a resin composition containing alkoxysilane and a hydroxyl-group-containing water-soluble resin. The first and second vapor-deposited aluminum oxide films exhibit a vapor-deposited-film peak top ratio P from 1.05 to 1.60 inclusive when X-ray absorption fine structure analysis is performed, where P=(intensity peak top around 1572 eV) / (intensity peak top around 1566 eV).SELECTED DRAWING: None

To provide: a barrier film which, when used in a wavelength conversion sheet, can attain a high retention of luminance; and a wavelength conversion sheet and a backlight member that employ the barrier film.SOLUTION: The barrier film comprises a resin substrate, a first vapor-deposited aluminum oxide film, a first coating layer, a second vapor-deposited aluminum oxide film and a second coating layer, which are laminated in this order. The first and second coating layers are each a cured product of a resin composition containing alkoxysilane and a hydroxyl-group-containing water-soluble resin. The first and second vapor-deposited aluminum oxide films exhibit a vapor-deposited-film peak top ratio P greater than or equal to 0.70 and less than 1.05 when X-ray absorption fine structure analysis is performed, where P=(intensity peak top around 1572 eV) / (intensity peak top around 1566 eV).SELECTED DRAWING: None

The present invention provides a hydrogenation catalyst, which includes a carrier and a catalytic active component, wherein the carrier includes α-Al2O3 and MgO, and the active component includes a platinum element. The present invention uses alumina of a specific crystal form as a core, coats a basic oxide, forms a composite carrier, and then loads a precious metal on the composite carrier to obtain a hydrogenation catalyst. The hydrogenation catalyst is applied to the reaction of hydrogenation and hydrogenolysis of dibenzofuran to produce OPP, and has the characteristics of high OPP selectivity, few by-products, good stability, and long service life. The active precious metal in the hydrogenation catalyst is more dispersed on the surface of the carrier, reducing the amount of the precious metal component. The preparation process of the hydrogenation catalyst is simple and easy to mass produce. Therefore, the hydrogenation catalyst provided by the present invention has excellent prospects for industrial application.

To provide: a barrier film which, when used in a wavelength conversion sheet, can attain a high retention of luminance; and a wavelength conversion sheet and a backlight member that employ the barrier film.SOLUTION: The barrier film comprises a resin substrate, a first vapor-deposited aluminum oxide film, a first coating layer, a second vapor-deposited aluminum oxide film and a second coating layer, which are laminated in this order. The first and second coating layers are each a cured product of a resin composition containing alkoxysilane and a hydroxyl-group-containing water-soluble resin. The first and second vapor-deposited aluminum oxide films exhibit a vapor-deposited-film peak top ratio P greater than or equal to 0.70 and less than 1.05 when X-ray absorption fine structure analysis is performed, where P=(intensity peak top around 1572 eV) / (intensity peak top around 1566 eV).SELECTED DRAWING: None

In some embodiments the application pertains to processes comprising reacting a component comprising an alkaline earth weak acid with a component comprising an acid to form a component comprising an alkaline earth acid anion and a component comprising a weak acid derivative. At least a portion of the component comprising the alkaline earth acid anion is reacted with a component comprising an alkali sulfate to form a component comprising alkaline earth sulfate and a component comprising an alkali acid anion. At least a portion of the component comprising alkaline earth sulfate is decomposed to form a component comprising alkaline earth oxide, or alkaline earth hydroxide, or alkaline earth carbonate, or alkaline earth sulfide, or a derivative thereof, or any combination thereof, and a component comprising sulfur dioxide, or oxygen, or sulfur trioxide, or a derivative thereof, or any combination thereof.

The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In embodiments, the glass composition may include 74-78 mol. % SiO2; X mol. % Al2O3, wherein X is 5-7; alkaline earth oxide comprising MgO and CaO, wherein: CaO is 0.1-1.0 mol. %; MgO is 4-7 mol. %; and a ratio (CaO (mol. %) / (CaO (mol. %)+MgO (mol. %)) is less than or equal to 0.5. The glass composition may further include Y mol. % alkali oxide, wherein the alkali oxide comprises 9-13 mol. % Na2O and less than or equal to 0.4 mol. % of a fining agent. The glass composition may be free of boron and compounds of boron.

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.

To provide: a barrier film which, when used in a wavelength conversion sheet, can attain both a high retention of luminance and a reduction in unevenness of color; and a wavelength conversion sheet and a backlight member that employ the barrier film.SOLUTION: The barrier film comprises a resin substrate, a first vapor-deposited aluminum oxide film, a first coating layer, a second vapor-deposited aluminum oxide film and a second coating layer, which are laminated in this order. The first and second coating layers are each a cured product of a resin composition containing alkoxysilane and a hydroxyl-group-containing water-soluble resin. The first and second vapor-deposited aluminum oxide films exhibit a vapor-deposited-film peak top ratio P from 1.05 to 1.60 inclusive when X-ray absorption fine structure analysis is performed, where P=(intensity peak top around 1572 eV) / (intensity peak top around 1566 eV).SELECTED DRAWING: None

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 embodiments described herein relate to glass compositions and glass articles formed from the same. An exemplary glass composition may include: greater than or equal to 70 mol.% and less than or equal to 80 mol.% SiO2; greater than or equal to 4 mol.% and less than or equal to 10 mol.% Al2O3; less than or equal to 2.5 mol.% B2O3; alkali oxide; and greater than or equal to 0.2 mol.% and less than or equal to 5 mol.% cerium oxide CeOx, wherein x is greater than or equal to 1.5 and less than or equal to 2. The alkali oxide may include greater than or equal to 5 mol.% and less than or equal to 12 mol.% of Na2O; and Li2O in an amount that is less than or equal to the amount of Al2O3.

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.