124 results about "Barium oxide" patented technology

The present invention generally relates to a process of fabricating an asymmetric supercapacitors device comprising synthesizing a BaO and CeO2 thin film as a first electrode using a one-step successive ionic layer adsorption and reaction (SILAR) method for uniform deposition and adhesion on a conductive substrate; synthesizing an activated carbon (AC) electrode as a second electrode; formulating a solid-state electrolyte layer comprising polyvinyl alcohol (PVA) and potassium hydroxide (KOH), wherein the solid-state electrolyte layer is formed as a gel; assembling the device by layering the first electrode, the solid-state electrolyte layer, and the second electrode in a stacked configuration, wherein the assembled device is allowed to stabilize for a period of 12-24 hours at room temperature to ensure uniform distribution of the electrolyte and structural integrity; and pressing the assembled layers together to enhance contact between electrodes and the electrolyte.

The present disclosure herein discloses a skeleton supported catalyst and a method for preparing allyl alcohol polyoxyethylene ether by using the same. The skeleton supported catalyst is a catalyst loaded with barium oxide, potassium oxide, yttrium oxide within a copper skeleton. A method comprising: putting the skeleton supported catalyst into a reaction vessel, and after adding nitrogen to the reaction vessel, adding dried and dehydrated allyl alcohol or the allyl alcohol polyoxyethylene ether with low molecular weight to the reaction vessel, raising the temperature, and continuously introducing dried and dehydrated ethylene oxide for reaction; after the reaction being completed, cooling down, and filtering and discharging to obtain after the reaction being completed, cooling down, and filtering and discharging to obtain a finished product of the allyl alcohol polyoxyethylene ether. The allyl alcohol polyoxyethylene ether product prepared by the skeleton supported catalyst of the present disclosure has excellent product performance.

The invention provides a composite hydrogen transfer catalyst based on an MOFs material as well as a preparation method and application of the composite hydrogen transfer catalyst. The composite hydrogen transfer catalyst comprises the MOFs material loaded with an active metal component and solid alkali, the active metal component is selected from at least one of palladium, platinum, ruthenium, rhodium and nickel; the active metal component accounts for 0.5-5% of the mass of the catalyst; the MOFs material is selected from at least one of ZIF-8, MIL-101, UiO-66, HKUST-1 and MOF-5 (Metal Organic Frameworks); the solid alkali is selected from at least one of magnesium oxide, calcium oxide, hydroxyapatite and barium oxide. The catalyst provided by the invention has the advantages of high catalytic activity, good selectivity, strong stability, reusability and the like, can efficiently catalyze fatty alcohol to perform hydrogen transfer reaction under a lower-temperature reaction condition to prepare Guerbet alcohol, remarkably improves the yield and purity of a product, and reduces the reaction energy consumption and cost.

The invention belongs to the technical field of metallurgy, and particularly relates to a slag charge for electroslag remelting in a high-altitude and high-humidity environment and a preparation method thereof.The slag charge is prepared from 20-22% of calcium fluoride, 25-28% of aluminum oxide, 20-25% of calcium oxide, 8-10% of magnesium oxide, 8-10% of silicon dioxide, 3-8% of rare earth oxide and 1-5% of barium oxide; for high altitudes (barometric lt; 90 kPa) and high humidity (relative humidity gt; the invention provides the low-hygroscopicity, low-fluorine and environment-friendly slag charge, so that the stability of the slag pool is improved, the oxyhydrogen control is realized, and the energy consumption is reduced.

Glass compositions include one or more of phosphorus oxide (P2O5), niobia (Nb2O5), titania (TiO2), potassium oxide (K2O) and lithium oxide (Li2O) as essential components and may optionally include barium oxide (BaO), zinc oxide (ZnO), V2O5 (vanadia), FeO (iron oxide) and other components.

This invention relates to the field of glass-ceramic technology, specifically providing a low-temperature co-fired ceramic, its preparation method, and its application. The raw materials for the low-temperature co-fired ceramic include VSBBS glass frit and ceramic frit, with the total weight of the VSBBS glass frit and ceramic frit being 100%. The mass percentages of the VSBBS glass frit and ceramic frit are 20-40% and 60-80%, respectively. The raw materials for the VSBBS glass frit, by mass percentage, include 10-30 wt% vanadium oxide, 10-30 wt% antimony oxide, 10-30 wt% barium oxide, 10-20 wt% boron oxide, and 30-50 wt% silicon oxide, with the sum of all oxides being 100%. The LTCC material obtained by this invention achieves excellent millimeter-wave dielectric properties, with a relative permittivity between 4.8 and 6.8, a dielectric loss less than or equal to 0.001, and a flexural strength of 180-230 MPa.

Provided is an anti-counterfeiting composition for anti-counterfeiting fibers, including a carrier, an anti-counterfeiting tracer and a dispersant, wherein the anti-counterfeiting tracer is composed of barium oxide, strontium oxide, aluminum oxide and zinc oxide, and a barium element content, a strontium element content, an aluminum element content, and a zinc element content in the anti-counterfeiting composition is controlled to a fixed feeding mass ratio; in percent by mass, the sum of the barium element content, strontium element content, aluminum element content, and zinc content accounts for 5-50% of the anti-counterfeiting composition; the carrier is a matrix polymer or a bio-derived oil. The anti-counterfeiting composition of the present disclosure can give the anti-counterfeiting fiber advantages of memory tracking properties and identification functions, high anti-counterfeiting capability, and good anti-counterfeiting concealment.

This application discloses a method for producing acetonitrile by amination of acetate, comprising the following steps: in a reactor, acetate, ammonia, and a catalyst are contacted and reacted to obtain acetonitrile; wherein the acetate is selected from at least one of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, and cyclohexyl acetate; the catalyst is composed of a support and alkaline earth metal oxides and alkali metal oxides supported on the surface of the support; wherein the support is selected from at least one of silicon oxide, aluminum oxide, titanium oxide, and zirconium oxide; wherein the alkaline earth metal oxide is selected from at least one of magnesium oxide, calcium oxide, strontium oxide, and barium oxide; wherein the alkali metal oxide is selected from at least one of lithium oxide, sodium oxide, and potassium oxide; wherein the loading of alkaline earth metal oxide in the catalyst is 0.01–10 wt%, the loading of alkali metal oxide is 0.05–5 wt%, and the remainder is the support.

The invention discloses a cooling anti-radiation coating. The cooling anti-radiation coating comprises a surface coating, a middle coating and a bottom coating, the surface coating comprises the following components in percentage by weight: 40-60% of polyethylene, 1-5% of carbon nanotubes, 1-5% of graphene oxide, 10-15% of a dispersant, 5-8% of polyethylene glycol, 3-8% of nano barium oxide and 3-10% of nano boron nitride. The intermediate coating comprises the following components in percentage by weight: 50%-70% of polyurethane, 20%-30% of a silane coupling agent and 5%-10% of aluminum oxide; the bottom coating comprises the following components in percentage by weight: 70%-80% of resin, 7%-9% of talcum powder, 2%-4% of aluminum oxide and 3%-10% of hydroxyethyl cellulose. The cooling anti-radiation coating formed by the synergistic cooperation of the components has high electromagnetic shielding performance and long service life.

The invention discloses a high-speed rail sound screen wall self-repairing nano coating and a preparation method thereof, and belongs to the technical field of coatings, sodium alginate is crosslinked with calcium ions in calcium chloride, gel microspheres are formed on the surface of porous shell powder, a self-repairing agent is wrapped in the gel microspheres, barium nitride is hydrated to form barium hydroxide under the excitation action of water, and the self-repairing nano coating is formed. Barium hydroxide belongs to an alkaline compound, and through the wrapping effect of the microcapsule, the corrosion effect on a modified binder in a system can be reduced, so that the material has the advantages of light weight, sound insulation, good acid and alkali resistance, washing resistance and compressive strength; polyvinyl alcohol is used as a bridge, hydroxyl of polyvinyl alcohol is combined with carboxyl of carboxymethyl chitosan and then copolymerized with vinyl acetate to form a three-dimensional network structure, cohesive force of the adhesive and adhesive force to a base material are greatly improved, calcium ions are separated out due to the alkaline effect of barium hydroxide, and meanwhile the crosslinking strength of the adhesive can be improved; the bonding strength is further improved.

This invention discloses a slab with a crystalline effect. The slab includes a blank layer, on the surface of which a glaze modifier is applied to form a glaze modifier layer. The glaze modifier comprises the following raw materials in parts by weight: 5-8 parts potassium feldspar, 4-7 parts calcined talc, 3-5 parts modified translucent stone agent, 3-5 parts calcium oxide, 2-4 parts barium oxide, 1-3 parts cobalt oxide, and 2-4 parts strontium carbonate modifier. The slab with a crystalline effect of this invention is formed by applying the glaze modifier. The glaze modifier uses potassium feldspar, calcined talc, calcium oxide, barium oxide, and cobalt oxide as a matrix. By adding strontium carbonate modifier and modified translucent stone agent, the two are synergistically enhanced, improving the crystalline effect of the product and increasing its stain resistance and easy-to-clean properties. Simultaneously, the product exhibits significant improvements in scrub resistance and alkali corrosion resistance.

This disclosure relates to systems and methods for gas mitigation. In one aspect of the disclosure, a battery is presented. The battery has a de-gassed lithium-manganese rich battery cell and a lithium-based anode packaged with a lithium-manganese-rich cathode, saturated in an electrolyte. A barium oxide-based coating is in the de-gassed lithium-manganese rich battery cell, and configured to convert oxygen and carbon dioxide into barium peroxide and carbonate and retain the barium peroxide and carbonate.

The invention discloses a carbon nanotube master batch, a polyethylene composite material and a preparation method and application thereof, and belongs to the technical field of high polymer materials, the carbon nanotube master batch has a core-shell structure, the core comprises a carbon nanotube and iron barium oxide, and the shell is polyethylene grafted maleic anhydride; the mass ratio of the core to the shell is 1: (0.25-5); the mass ratio of the carbon nanotubes to the iron barium oxide is (1-9): 1. According to the invention, by coating the carbon nanotubes and the iron-barium-oxygen bodies, the dispersibility of the carbon nanotubes and the iron-barium-oxygen bodies in polyethylene is effectively improved, the agglomeration phenomenon is avoided, the interface bonding force with polyethylene is improved, the carbon nanotubes and the iron-barium-oxygen bodies are taken as cores, a tough composite reinforced core is formed, external loads can be effectively absorbed and dispersed, and the tensile strength of polyethylene is improved. The strength, the self-repairing property and the scratch resistance of the composite material are improved, and the carbon nanotube master batch is suitable for the fields of aerospace, electronics and electrics, medical equipment and 5G communication.

The invention provides a lithium ion battery gas getter. The present disclosure relates to systems and methods for gas mitigation. In one aspect of the present disclosure, a battery is presented. The battery has a degassed lithium-rich manganese battery cell and a lithium-based anode encapsulated with a lithium-rich manganese cathode saturated in an electrolyte. A barium oxide-based coating is in the degassed lithium-rich manganese battery cell and is configured to convert oxygen and carbon dioxide to barium peroxide and carbonate and retain the barium peroxide and the carbonate.

The invention relates to the production of radiation-shielding zinc-barium-borosilicate glass materials, in particular for X-rays and / or gamma-rays and / or fast neutrons and the like, from readily available, low-cost and abundant available starting materials by means of uniquely designed glass compositions. Sodium oxide (Na2O), silicon dioxide (SiO2), boron oxide (B2O3), calcium oxide (CaO), barium oxide (BaO), zinc oxide (ZnO), bismuth oxide (Bi2O3), gadolinium oxide (Gd2O3) and cerium oxide (CeO2) are used in particular, when mixed, a satisfactory and effective shielding effect against X-rays and / or gamma-rays and / or fast neutrons and the like is provided.

The application relates to the technical field of inorganic nonmetallic materials, and particularly discloses a foamed ceramic material and a preparation method thereof. The material is prepared from solid waste-based main materials, a foaming agent and a stabilizing additive containing barium oxide, magnesium oxide and titanium dioxide. The preparation method comprises the following steps: after the raw materials are mixed according to the proportion, wet ball milling is carried out to prepare slurry, the obtained slurry is sprayed and dried to prepare powder, and finally, the powder is sintered and formed under a specific sintering system in an air atmosphere. By introducing a BaO-MgO-TiO2 ternary synergistic stabilization system, the technical problems of unstable solidification, interference in the foaming process and uneven product performance existing in the traditional carbon reduction method for treating chromium-manganese-containing solid waste are effectively solved, long-term chemical fixation of harmful elements in the ceramic matrix is realized, a foamed ceramic product with excellent environmental safety and good physical performance is successfully prepared, and a new way is provided for high-value resource utilization of large quantities of industrial hazardous waste.

The invention relates to the field of inorganic non-metallic materials, and discloses a high-brightness long-afterglow luminescent ceramic material and a preparation method thereof.The material is composed of calcium fluoride, zinc sulfide, strontium sulfide, kaolin, quartz, albite, titanium dioxide, barium oxide, iron oxide and phosphorus pentoxide, a SiO2-Y2O3 crystal boundary regulation phase is introduced, the luminous efficiency and trap level distribution are optimized, and the luminous efficiency is improved. The preparation method comprises the steps of raw material ball milling, pre-sintering, cold press molding, three-section gradient hot pressed sintering, reduction annealing and polishing, and high densification and crystal grain controllable growth are achieved through staged temperature control pressurization. The initial brightness of the obtained material is greater than or equal to 800cd / m, the afterglow is greater than or equal to 11 hours, and the standard deviation of luminescence uniformity is lt; and the process is compatible with a conventional production line, the energy consumption is low, the cost is controllable, and the method is suitable for the fields of emergency indication, building decoration, intelligent wearing and the like.

The invention provides a preparation method of a biomass platform molecule angelica lactone isomerization catalyst. The catalyst comprises one of the following solid metal oxides and one of potassium assistants: eight metal oxides (m-zirconium oxide, t-zirconium oxide, c-zirconium oxide, aluminum oxide, magnesium oxide, barium oxide, lanthanum oxide and neodymium oxide) and seven potassium sources (potassium nitrate, potassium carbonate, potassium acetate, potassium hydroxide, potassium chloride, potassium oxalate and potassium oxide). By designing the preparation method of the metal oxide, the high-specific-surface-area pure-crystalline-phase metal oxide is obtained; by introducing the potassium aid, the surface alkalinity of the catalyst is effectively regulated and controlled, so that the alpha-angelica lactone is simply and efficiently isomerized into the beta-angelica lactone. The catalyst provided by the invention has the characteristics of high activity, high selectivity, high stability and easy recovery, and provides a feasible technical approach for biomass platform molecule angelica lactone isomerization.

The application relates to the field of gas sensors, and particularly discloses an electrochemical acetylene sensor electrode, a preparation method thereof and an electrochemical acetylene sensor. The electrochemical acetylene sensor electrode comprises a polytetrafluoroethylene film and a slurry coated on the polytetrafluoroethylene film, wherein the slurry comprises nano gold particles, nano magnesium oxide, nano barium oxide, modified conductive carbon powder and a Nafion solution in a weight ratio of (0.47-0.50):(0.02-0.20):(0.02-0.18):(1-3):(0.6-2.0); and the modified conductive carbon powder is obtained by mixing potassium permanganate, deionized water and conductive carbon and then performing ball milling. The application realizes the effects of high sensitivity and high linearity of acetylene gas, greatly improves the selectivity of the electrochemical acetylene sensor, and has the advantages of low detection limit, high sensitivity and good selectivity.

The invention belongs to the technical field of glue joint glue layer development and nondestructive detection, and particularly relates to a glue layer nondestructive development and online detection method. The adhesive layer is formed by compounding bamboo strips and a nano modified adhesive, and the nano modified adhesive comprises 0.5%-1.0% of multi-walled carbon nanotubes and 6.0%-8.0% of metal oxides (such as bismuth oxides, tungsten oxides, barium oxides and the like) with high X-ray attenuation characteristics. The preparation method comprises the steps of optimized bamboo strip pretreatment, nano adhesive preparation, gluing assembly, hot-pressing curing and the like. Based on the high X-ray attenuation characteristic of metal oxidation and in combination with a convolutional neural network, an accurate nondestructive testing method is provided, the three-dimensional glue joint continuity is measured by extracting multiple characteristics of distribution of the glue layer containing nanoparticles, prediction of the glue joint strength of the glue layer is achieved, and the prediction error is lower than 5%. Through the synergistic effect of multi-walled carbon nanotubes and metal oxidation with the high X-ray attenuation characteristic, the bonding strength of the adhesive layer is remarkably improved, and the composite material is suitable for an assembly type building bearing structure and has the advantages of being environmentally friendly, excellent in mechanical property, monitorable in quality and efficient in resource utilization.

The present invention suppresses a change in the resistance value. This resistor paste includes: metal particles that contain copper and nickel; insulating particles that contain at least one of aluminum oxide, zirconium oxide, zinc oxide, and boron nitride; and glass particles. The glass particles contain barium oxide, boron oxide, and aluminum oxide. With respect to the glass particles, the ratio of barium oxide is 10 wt% or more and 30 wt% or less, the ratio of boron oxide is 20 wt% or more and 30 wt% or less, and the ratio of aluminum oxide is 1 wt% or more and 10 wt% or less.

The invention relates to a method of providing an ore concentrate solution suitable for beneficiation processing, the method including the step of contacting an ore with one or more metal bases at elevated temperature. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore. Typically, the one or more metal bases are alkali metal bases, preferably chosen from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or caesium hydroxide, or alkaline earth bases, preferably chosen from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore.

This invention relates to the technical field of barium hydroxide preparation, specifically to a method for producing barium hydroxide monohydrate. The method includes: pulverizing barite raw material; mixing the pulverized barite with rice husk ash and soda ash; calcining at 1100-1200℃ and holding at that temperature for 90-120 minutes; then cooling the mixture in a kiln to below 80℃ to obtain porous crude barium oxide; dispersing the crude barium oxide in water; filtering and washing the residue with deionized water to obtain the filtrate; heating the filtrate to 80-85℃; slowly adding a mixed desulfurizing agent composed of zinc oxide, calcium oxide, and manganese tetroxide for desulfurization; filtering and washing to obtain a barium hydroxide solution; concentrating and crystallizing to obtain Ba(OH)₂·8H₂O crystals; and then drying and dehydrating under vacuum to obtain barium hydroxide monohydrate. The purpose of this invention is to provide a method for producing barium hydroxide monohydrate that achieves low-cost, simple, stable product quality, and environmentally friendly production.

The invention belongs to the field of lithium ion batteries, and provides a preparation method of a high-performance long-cycle high-nickel ternary positive electrode material, which comprises the following steps: uniformly mixing a nickel-cobalt-manganese hydroxide precursor with barium strontium tungsten oxide and a lithium source to obtain a mixture; and sintering the mixture in an aerobic atmosphere to obtain the high-performance long-cycle high-nickel ternary positive electrode material. According to the invention, the additive Ba2O6SrW is introduced, so that the obtained high-nickel ternary positive electrode material shows relatively high specific discharge capacity and first charge-discharge efficiency, and relatively excellent cycle retention rate.

This invention provides an electronic-grade glass fiber composition and its glass fiber cloth, relating to the field of glass fiber technology. The electronic-grade glass fiber composition comprises: alumina, silicon oxide, magnesium oxide, calcium oxide, barium oxide, additives, and fillers; the mass ratio of alumina, barium oxide, and additives is (20-40):(2-8):(2-5); the additives are metal A and metal B in a mass ratio of (1-5):(1-5); metal A includes at least one selected from titanium, vanadium, chromium, manganese, iron, cobalt, and nickel. Metal B includes at least one selected from lanthanum, cerium, praseodymium, scandium, and yttrium. The electronic glass fiber cloth prepared from the electronic-grade glass fiber composition of this invention has high tensile strength and low moisture regain during long-term storage.

The glass composition includes, as essential components, one or more of tungsten oxide (WO3), boron oxide (B2O3), lanthanum oxide (La2O3), niobium oxide (Nb2O5), titanium dioxide (TiO2), and zirconium oxide (ZrO2), and may optionally include yttrium oxide (Y2O3), barium oxide (BaO), calcium oxide (CaO), antimony oxide (Sb2O3), phosphorus oxide (P2O5), lead oxide (PbO), germanium oxide (GeO2), and other components. The glass composition is characterized by a high refractive index and a high transmittance in the blue light portion of the electromagnetic spectrum.

Glass compositions include one or more of phosphorus oxide (P2O5), niobia (Nb2O5), titania (TiO2), potassium oxide (K2O) and lithium oxide (Li2O) as essential components and may optionally include barium oxide (BaO), zinc oxide (ZnO), V2O5 (vanadia), FeO (iron oxide) and other components.

The invention provides a multiphase microcrystal glass fiber and a preparation method thereof, and the preparation method comprises the following steps: (1) placing mixed glass powder in a kiln, and sequentially melting, homogenizing and clarifying to obtain mixed glass liquid; wherein the mixed glass powder comprises SiO2 (silicon dioxide), Al2O3 (aluminum oxide), Li2O (lithium oxide), P2O5 (phosphorus pentoxide), ZrO2 (zirconium oxide), MgO (magnesium oxide), CaO (calcium oxide), TiO2 (titanium oxide), Na2O (sodium oxide), K2O (potassium oxide), BaO (barium oxide), ZnO ( (2) enabling the mixed glass liquid to flow out through a gradient heating furnace, and entering a heat preservation tank for devitrification to obtain microcrystalline glass liquid; wherein crystals in the glass ceramic liquid comprise at least one of lithium disilicate, lithium silicate, petalite or cordierite; and (3) enabling the microcrystalline glass liquid to flow out through a temperature control bushing plate, and drawing to obtain the multiphase microcrystalline glass fiber. According to the scheme, through cooperation of the components and the process, it is ensured that controllable devitrification of the glass is completed, meanwhile, good high-temperature fluidity is maintained, continuous preparation from molten glass to the multiphase microcrystalline glass fiber is successfully achieved, and the obtained glass fiber product has the high elastic modulus, the low dielectric constant and the low thermal expansion coefficient.

The invention discloses a high-frequency and high-speed copper-clad plate and a manufacturing method thereof.The high-frequency and high-speed copper-clad plate comprises a copper-clad plate body, the copper-clad plate body is manufactured through the steps of burdening, curing, cutting, pre-stacking combination and hot press molding, and the manufactured materials comprise modified resin, modified spherical filler, modified reinforcing material and accelerant; the raw materials are proportioned in parts by weight as follows: 50-60 parts of modified resin, 8-15 parts of modified spherical filler, 8-14 parts of a modified reinforcing material and 5-15 parts of an accelerant; the invention relates to the technical field of high-frequency high-speed copper-clad plates. According to the high-frequency and high-speed copper-clad plate and the manufacturing method thereof, silicon oxide and boron oxide are used as basic components of the low-dielectric spherical filler, sodium oxide and potassium oxide are introduced at the same time, the acid and alkali resistance of glass is improved, the glass melting temperature is reduced by introducing barium oxide, the spheroidizing effect is obvious, the sphericity degree can generally reach 0.950 or above, and the high-frequency and high-speed copper-clad plate is suitable for large-scale production. The flowability is good, and the use amount of the resin can be greatly reduced in the subsequent use process.