38 results about "Elemental oxygen" patented technology

The invention discloses a processing method for improving surface cracks of high-strength 316L stainless steel, which comprises the following steps: S1, product smelting: selecting a low-sulfur raw material in an electric furnace charging stage, carrying out electric furnace crude smelting, pre-desulfurization treatment, AOD (Argon Oxygen Decarburization) refining and calcium line improvement, and then feeding the low-sulfur raw material to a continuous casting platform for casting to obtain a plate blank; s2, plate blank surface coping is conducted, specifically, two passes of coping are conducted on the two surfaces of the plate blank correspondingly; s3, hot rolling and calendaring: rough calendaring and fine calendaring. According to the method, firstly, by increasing the chromium content, the reasonable ferrite content of the plate blank is kept, and austenite grains are prevented from growing excessively in the heating and smelting process of an electric furnace; 2, by reducing the content of harmful elements such as oxygen and sulfur, intergranular separated sulfide is reduced, and intergranular binding force is improved; thirdly, the surface of the plate blank is ground, and the poor-quality part of the surface layer of the plate blank is eliminated; 4, refining surface crystal grains of the plate blank by adopting a hot rolling and light pressing process; through the means, crack defects are avoided, and the surface quality of a final product is improved.

This invention discloses a Cu-Mn-Al-Y composite catalyst, its preparation method, and its applications. The catalyst includes a composite oxide support and Cu elemental particles supported on the composite oxide support. The composite oxide support comprises a complex formed by Al oxide and Mn oxide, with Y element doped into the complex. In this Cu-Mn-Al-Y composite catalyst, the Cu elemental particles effectively lower the activation energy of the nitrogen dioxide hydrogenation to methanol reaction. By adsorbing and activating carbon dioxide, the Cu particles weaken the carbon-oxygen double bond in carbon dioxide, making it more susceptible to accepting active hydrogen (H) from hydrogen gas, thus promoting the hydrogenation of carbon dioxide to methanol. Y doping induces lattice distortion, increasing the oxygen vacancy concentration. The introduction of Mn and Y elements increases the number of moderately alkaline sites, promoting the adsorption and activation of carbon dioxide, which helps convert the adsorbed carbon dioxide into methanol, thereby improving the methanol conversion rate.

A preparation method of submicron powder of high-entropy nitride via nitride thermal reduction with mechano-chemical assistance, comprising material preparation—grinding—activation—preforming—reaction. In the present invention, high-entropy metal nitride and silicon nitride is used as raw materials, soft mechanochemical activation technologies are used to reduce reaction activation energy of the system, thereafter, by thermal reduction of the nitride, high-purity high-entropy nitride powder is prepared with solid phase methods, and the shortage of high-purity high-entropy nitride powder is addressed. There is no impure phase in the (Hf0.2Zr0.2Ti0.2Nb0.2Ta0.2)N high entropy powder prepared according to the present invention, and a single phase solid solution of good crystallinity is formed, and distribution of elements and ingredients in the powder is even, no foreign element is present, and oxygen content is controlled to be less than 0.3%.

The application provides an electrochemical device and an electronic device, and belongs to the technical field of electrochemistry. The electrochemical device comprises a positive electrode, a negative electrode and an electrolyte. The positive electrode comprises a positive electrode current collector and a positive electrode composite layer arranged on at least one surface of the positive electrode current collector. The positive electrode composite layer comprises a first polymer and carbon nanotubes. The first polymer comprises nitrogen, oxygen and carbon. The positive electrode composite layer has characteristic peaks of cyanide and carbonyl in an infrared spectrum. The characteristic peak of cyanide is located at 2235cm ‑1 to 2250cm ‑1 , and the characteristic peak of carbonyl is located at 1675cm ‑1 to 1700cm ‑1 . The peak intensity ratio of the characteristic peaks of cyanide and carbonyl is A, and 1≤A≤4. The aspect ratio of the carbon nanotubes is B, and 10≤B≤500. The application can improve the floating charge performance of the electrochemical device, and improve the high-temperature safety performance and the puncture safety performance.

Provided is a fluororesin sheet-shaped material which exhibits excellent adhesion to a metal layer even if bonded at a temperature that is equal to or lower than the melting point of the fluororesin. The fluororesin sheet-shaped material is a sheet-shaped material which contains a fluororesin, at least one surface of which satisfies the following general formula (A). (A): O ≥ E + 0.5 In the formula, O is the elemental oxygen ratio obtained from measurements by a scanning X-ray photoelectron spectroscopic analyzer (XPS), and E is the difference between the surface elastic modulus at the time when the cumulative relative frequency reaches 0.99 and the surface elastic modulus at the time when the cumulative relative frequency reaches 0.01 in a multipoint measurement of the surface elastic modulus by a scanning atomic force microscope at 120°C.

This description relates to a battery element comprising the following: - Electrodes including an anode and a cathode, and - An electrolyte comprising a crystalline material having the composition M2B2O5.x(HOH).y(NOH) between the electrodes. Here, M and N are alkali metals or hydrogen or a mixture of alkali metals or hydrogen, B is titanium, O and H represent elemental oxygen and hydrogen, respectively, and x and y are between 0 and 4 and indicate the presence of H+, OH-, and N+ ions that can move within the crystalline material. In particular, at least one type of ion among H+, OH-, N+, and M+ is mobile to move toward at least one of the electrodes within the crystalline material, and at least one of the electrodes is made of a material suitable for performing chemical interactions with at least one of the H+, OH-, N+, and M+ ions.

A light-emitting element (30) includes an anode (2), a cathode (5), a light-emitting layer (EM) provided between the anode (2) and the cathode (5), and an electronic functional layer (4) provided between the cathode (5) and the light-emitting layer (EM). The electronic functional layer (4) includes a plurality of nano metal oxide particles each comprising a core that contains: a first element selected from Mg, Ti, Sn, W, Ta, Ba, Zr, Al, Y, Co, Cu, Mn, and Hf; a second element that is a metalloid element or an element selected from, among nonmetallic elements, elements excluding elemental hydrogen, elemental oxygen, and group 18 elements; elemental zinc; and elemental oxygen.

The invention relates to a method for indirectly measuring the carbon content of molten steel based on converter flue gas big data analysis. The method comprises the following steps: S1, obtaining initial molten iron information; s2, obtaining converter flue gas component information; s3, performing experience correction on smoke components; s4, calculating the oxidation amount of each element; s5, calculating the carbon content in the molten pool; and S6, empirically correcting the carbon content in the molten pool. According to the method, real-time online analysis is carried out on the converter flue gas components in the production process of the oxygen top-blown converter for the medium-low carbon molten iron, comprehensive analysis is carried out on the molten steel components in the smelting process of the converter, and therefore forecasting of molten steel end point carbon is achieved.

The present invention relates to a negative electrode comprising a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, wherein the negative electrode mixture layer contains a negative electrode active material including: artificial graphite particles; and an amorphous carbon coating layer disposed on the artificial graphite particles, the negative electrode active material includes 30-170 mg of elemental nitrogen and 600-1,000 mg of elemental oxygen per 1 kg of the negative electrode active material, and the negative electrode has an orientation index according to Equation 1 of 5-20.

To provide a film with superior adhesion, and a laminate including the film.SOLUTION: A film 1 is constituted by a resin substrate 2. In the film 1, an elemental carbon ratio C90, an elemental oxygen ratio O90, an elemental carbon ratio C15, and an elemental oxygen ratio O15 which are measured in a prescribed first test satisfy a formula (1) below, or an elemental carbon ratio C15 and an elemental oxygen ratio O15 which are measured in a prescribed second test satisfy a formula (2) below. (1): O15 / C15>O90 / C90, (2): O15 / C15>0.3.SELECTED DRAWING: Figure 1

The invention relates to the technical field of acrylonitrile production, in particular to a co-processing and high-value utilization process of an acrylonitrile byproduct ammonium sulfate solution. Comprising the steps of multi-stage pretreatment, catalytic wet oxidation, ammonia rectification and recovery, ammonium sulfate refining and water recycling. The method comprises the following steps: adjusting the pH value of an ammonium sulfate solution generated by an acrylonitrile quench tower, and then settling and filtering; mixing with elemental oxygen-containing gas, and removing organic matters and cyanides through catalytic wet oxidation; concentrating and condensing the solution, rectifying to obtain ammonia gas flow with the purity of more than or equal to 99%, and returning to the acrylonitrile reactor; crystallizing, recrystallizing, decoloring and drying the concentrated solution to obtain an ammonium sulfate product with the purity of more than or equal to 99.4%; rectifying kettle liquid and crystallization mother liquid are adsorbed and then are used as process replenishing water, and the water circulation rate is 79%-83%. The COD (Chemical Oxygen Demand) of the treated wastewater is less than or equal to 5000mg / L, and the total cyanogen is less than or equal to 5mg / L. The method realizes deep removal of pollutants and efficient recovery of resources, is environment-friendly and excellent in economical efficiency, and can be used for an acrylonitrile industrial device.

This invention relates to materials comprising hydroxides or hydroxyoxides of at least one or more metallic elements, and to cathode active materials for lithium-ion secondary batteries. Specifically, this invention relates to a manganese-containing precursor for a cathode active material in a secondary battery, the precursor comprising M and elemental oxygen, wherein M comprises: Ni in an amount x relative to M, wherein 0.0 ≤ x ≤ 50.0 mol%; Mn in an amount y relative to M, wherein 50.0 ≤ y ≤ 90.0 mol%; Co in an amount z relative to M, wherein 0.0 ≤ z ≤ 40.0 mol%; at least one element selected from the group consisting of Al, Ti, V, Mg, Cr, Ca, Zr, Nb, Mo, Hf, Ta, and W in an amount t relative to M, wherein 0.0 ≤ t ≤ 10.0 mol%; wherein x, y, z, and t are measured by ICP-OES; and wherein x + y + z + t is 100.0 mol%; and wherein the manganese-containing precursor has a content of at least 1.65 g / cm³. 3 The ratio of tapped density TD and specific surface area SSA (at least 12.00) to tapped density SSA / TD, expressed in units (m²). 2 cm 3 ) / g 2 express.

The application discloses a kind of doped vanadium dioxide powder and its preparation method, application, comprising the following steps: (1) vanadium dioxide and doped element oxide powder are placed in the liquid of insoluble oxide and mixed uniformly, then ball milling is carried out, after drying, obtain mechanical mixing powder;(2) sieve, and press into sheet, obtain sheet-shaped bulk;(3) carbon felt is coated on the periphery of sheet-shaped bulk, then the sheet-shaped bulk of carbon felt coating is placed into vacuum chamber and vacuumized;(4) by passing into large current to carbon felt, so that carbon felt heats to high temperature, realize the heat treatment of sheet-shaped bulk, after a certain time of heat treatment, power off, naturally cool to room temperature, grind, sieve, obtain doped vanadium dioxide powder.The preparation method of the doped vanadium dioxide powder can be completed only by vacuum chamber, direct current power supply and ball milling equipment, equipment is simple, convenient for large-scale production, no waste is generated in preparation process, and it is environment-friendly.

The invention relates to a method for producing a single barrier layer on a flexible polymeric substrate. The method comprises the following steps, to be carried out under an inert gas atmosphere: providing a flexible polymeric substrate; coating the flexible polymeric substrate with a coating agent consisting of a solvent and a VUV-curable coating material; removing the solvent; adjusting an oxygen content of 1 10-4 to 2 volume percent in an oxygen inert gas atmosphere; and irradiating the VUV-curable coating material with vacuum ultraviolet radiation having a wavelength of 100 nm to 250 nm under the oxygen inert gas atmosphere to cure an oxide layer on the flexible polymeric substrate.

An active material includes a core portion, and a coating portion arranged on a surface of the core portion. The core portion contains elemental lithium (Li), elemental manganese (Mn), and elemental oxygen (O). The coating portion contains an element A (A is at least one selected from the group consisting of Ti, Zr, Ta, Nb, and Al) and elemental oxygen (O). W / (T×S) is more than 0 and 15% by mass / (cm3 / g) or less, wherein T (nm) represents an average thickness of the coating portion, S (m2 / g) represents a specific surface area of the active material, and W (% by mass) represents an amount of element A contained in the coating portion.

An active material includes a core portion, and a coating portion arranged on a surface of the core portion. The core portion contains elemental lithium (Li), elemental manganese (Mn), and elemental oxygen (O). The coating portion contains an element A (A is at least one selected from the group consisting of Ti, Zr, Ta, Nb, and Al) and elemental oxygen (O). W / (T×S) is more than 0 and 15% by mass / (cm3 / g) or less, wherein T (nm) represents an average thickness of the coating portion, S (m2 / g) represents a specific surface area of the active material, and W (% by mass) represents an amount of element A contained in the coating portion.

A catalyst of Chemical Formula 1:MoaVbPcM1dM2eM3fM4gM5hM6iOj  [Chemical Formula 1]where Mo is molybdenum, V is vanadium, P is phosphorus, and O is oxygen, M1 is one or more selected from W, Sb, As, Sn, and Pb, M2 is one or more selected from Fe, Zn, Cr, Mn, and Cu, M3 is one or more selected from Se, Ga, Ti, Ge, Cd, Ta, and Ni, M4 is one or more selected from Al, Zr, Si, and Ce, M5 is one or more selected from Au, Pd, Pt, Ag, Ru, and Rh, M6 is one or more selected from Na, K, Li, Rb, Cs, Ca, Mg, Sr, and Ba, a, b, c, d, e, f, g, h, i, and j represent the atomic proportion of each element, for preparing (meth)acrylic acid; and a method for preparing the catalyst.

The invention relates to the technical field of solid waste treatment, and particularly discloses a method for treating steel dust and mud and regulating and controlling valuable metal migration through a sintering process, and the method comprises the following steps: preparing carbon nuclear dust and mud pellets with better pelletizing performance by means of sintering fuel grading coupling steel dust and mud layering pelletizing; the method comprises the following steps: preparing carbon nuclear dust mud pellets, sintering the carbon nuclear dust mud pellets as an intermediate material layer between a sintering mixture and a grate-layer material to assist in realizing rapid reduction of element compounds such as Zn, Pb, K, Na, In, Ge and Tl, transferring solid materials into a gas phase, and performing fixed-point oxygen supplementation on an air bellow at a sintering end point position to improve the purity and the recovery efficiency of each element oxide. The method is simple in technological process, easy to operate, high in micro-fine particle fuel and steel dust sludge treatment efficiency, excellent in treatment effect and convenient to popularize and apply on a large scale.

This invention discloses a processing method for improving surface cracks in high-strength 316L stainless steel. The steps are as follows: S1, Product smelting: Low-sulfur raw materials are selected during the electric furnace charging stage. After electric furnace roughing, pre-desulfurization treatment, AOD refining, and calcium wire modification, the raw materials are sent to the continuous casting platform for casting to obtain slabs; S2, Slab surface grinding: The two surfaces of the slab are ground in two passes respectively; S3, Hot rolling: Rough rolling and fine rolling. This invention achieves the following: First, by increasing the chromium content, the slab maintains a reasonable ferrite content, preventing excessive austenite grain growth during electric furnace heating and smelting; second, by reducing the content of harmful elements oxygen and sulfur, the precipitation of sulfides between grains is reduced, improving intergranular bonding; third, the surface of the slab is ground to eliminate the poor quality parts of the slab surface; fourth, a hot rolling light pressing process is used to refine the surface grains of the slab. Through the above means, crack defects are avoided, and the surface quality of the final product is improved.

The application discloses a kind of high-temperature direct degradation nitrogen oxide composite oxide powder and preparation method thereof.A kind of high-temperature direct degradation nitrogen oxide composite oxide powder, by 55%‑99% of rare earth metal element oxide and 1%‑45% of other element oxide with mass fraction, rare earth metal element is selected from one or more of terbium, praseodymium, dysprosium, cerium, samarium, yttrium, lanthanum, neodymium and gadolinium, other elements are selected from one or more of aluminum, zirconium, barium, magnesium, silicon and copper.The composite rare earth oxide powder functional material proposed in the application is directly applied to combustion high-temperature environment, nitrogen oxide in high-temperature flue gas is directly degraded into nitrogen and oxygen on the surface of functional material, and the purpose of reducing industrial combustion nitrogen oxide emission at source can be realized.

The invention belongs to the field of recycling of refined copper byproducts, and particularly relates to a selenium recovery method based on copper anode slime, which comprises the following steps: oxidizing selenium element in barrel anode slime into SeO2 through concentrated sulfuric acid, steaming the SeO2 into a spray tower, contacting the SeO2 with spray water, converting the SeO2 into seleninic acid, reducing the selenium into elemental selenium by SO2 which is steamed, and settling the elemental selenium; meanwhile, the graphene is mixed and dispersed in reactants, and based on the structural stability of the graphene under high-temperature roasting, the promotion effect on electron transmission is reserved at the high temperature, so that the electron transfer efficiency of the redox reaction between the concentrated sulfuric acid and the anode slime can be improved, and the recovery rate of the anode slime is improved. Therefore, the conversion evaporation recovery efficiency of selenium in the anode slime is improved.

The invention relates to the field of catalyst preparation, and discloses a vanadium-phosphorus-oxide catalyst and a preparation method and application thereof.The vanadium-phosphorus-oxide catalyst comprises, by weight, 20-35% of vanadium, 15-25% of phosphorus, 15-25% of oxygen, 15-25% of iron and 5-10% of lithium, and the vanadium-phosphorus-oxide catalyst comprises, by weight, 20-35% of vanadium, 15-25% of phosphorus, 5-10% of oxygen, 5-10% of iron and 5-10% of lithium. The content of the oxygen element is 40-65% by weight, the content of the iron element is 0.2-0.5% by weight, and the content of the lithium element is 0.02-0.1% by weight. The stability of the phosphorus element in the vanadium phosphorus oxide catalyst is high, and the vanadium phosphorus oxide catalyst has high catalytic activity and stability in the reaction of preparing maleic anhydride through hydrocarbon selective oxidation.

The present disclosure relates to a mesoporous carbon material, a preparation method thereof, and uses thereof. The mesoporous carbon material contains carbon, oxygen, hydrogen, sulfur, nitrogen, and phosphorus. Based on the total weight of the mesoporous carbon material, the carbon content is 80-90% by weight, preferably 82-88% by weight; the oxygen content is 2-6% by weight, preferably 3-5% by weight; the hydrogen content is 0.1-1% by weight, preferably 0.2-0.8% by weight; the sulfur content is 1-8% by weight, preferably 2-6% by weight; the nitrogen content is 0.5-3% by weight, preferably 1-2.5% by weight; and the phosphorus content is 0.5-10% by weight, preferably 1-6% by weight. The present disclosure provides a new mesoporous carbon material having a larger pore size (above 6 nm) and can be used as an adsorbent, catalyst, or catalyst carrier.

The present invention relates to a sulfide-based solid electrolyte including elemental lithium (Li), elemental phosphorus (P), elemental sulfur (S), and an elemental halogen (Ha), and having an argyrodite-based crystal structure, wherein at least a portion of the crystal structure is doped with a first compound including a Group 13 element (M) and a second compound including elemental oxygen (O).

The invention relates to composite powder and a preparation method thereof, and belongs to the technical field of powder materials. The composite powder comprises a silicon carbide inner core and a shell wrapping the inner core, the shell is made of silicon, oxygen and doping elements, the composite powder is digested through a microwave digestion instrument and then tested through an ICP analyzer, and the mass ratio of the doping elements is 0.015%-1.5%. According to the composite powder, a silicon carbide inner core is coated with a silicon dioxide shell mainly containing silicon and oxygen, the heat conductivity coefficient of the composite powder can be kept to a certain degree, the silicon dioxide shell contains a small amount of doping elements, the composite powder can have the high filling amount in a glue solution, the viscosity of the glue solution can be lower, and the heat conductivity coefficient of the composite powder can be kept to a certain degree. The glue spitting amount is increased; in addition, the coating effect of the shell can be better, and the breakdown voltage of the gasket prepared from the composite powder is improved.

The application discloses a kind of weathering alteration index calculation methods of orthometamorphic weathering crust, comprising: the mass percentage of element of mud logging cuttings is determined;The mass percentage of element is normalized;The mass percentage of element after normalization is converted into the mole ratio of oxide;According to the change trend of element oxide mole ratio, the relative loss and relative enrichment trend of various elements in orthometamorphic weathering crust are judged;According to the trend of element relative loss or enrichment, the easily soluble element and the element easy to remain are determined, and the calculation formula of new orthometamorphic weathering crust weathering alteration index is fitted;The mole ratio of element oxide is brought into the new calculation formula established, and according to the size of the weathering alteration index value calculated, orthometamorphic weathering crust is identified, and the structure of orthometamorphic weathering crust is divided.The present application provides important technical support for oil and gas basin orthometamorphic weathering crust reservoir research.

The present application relates to a kind of preparation methods of manganese-containing graphene oxide composite, which comprises the following steps: 1, after mixing graphite with concentrated acid, batch potassium permanganate is added, to obtain first mixed solution;2, after heating reaction, the second mixed solution is obtained by stirring with water;3, the second mixed solution is refluxed under ultrasonic stirring, and manganese-containing graphene oxide composite is obtained by solid-liquid separation.The manganese-containing graphene oxide composite prepared by the present application contains manganese, carbon, oxygen, potassium and sulfur, and exhibits excellent performance in the removal of sulfur compounds and other reaction processes.The preparation method provided by the present application obtains manganese-containing graphene oxide composite by refluxing under ultrasonic stirring, batch potassium permanganate is added during preparation, and sodium nitrate and hydrogen peroxide are not required, which significantly reduces the content of manganese ions and other substances in wastewater, and solves a series of problems such as environmental pollution caused by wastewater discharge.

This solid electrolyte contains elemental lithium (Li), elemental phosphorus (P), elemental sulfur (S), elemental oxygen (O), and elemental halogen (X). SO- fragment ions are observed in the solid electrolyte by time-of-flight secondary ion mass spectrometry. The value of Ib / Ia, which is the ratio of the intensity Ib of SO- fragment ions to the intensity Ia of PS2 - fragment ions, is more than 2.8×10-2 and less than 1.1×10-1. The value of Ic / Ia, which is the ratio of the intensity Ic of LiO- fragment ions to the intensity Ia of PS2 - fragment ions, is preferably more than 6.5×10-4 and less than 4.2×10-3.

The present invention relates to the technical field of photothermal atmospheric water collection, and discloses a derived carbon porous material, a preparation method and application thereof, and an atmospheric water collection device and method. The derived carbon porous material comprises carbon, oxygen, hydrogen, and nitrogen. Based on the total amount of the derived carbon porous material, the nitrogen content is 12-20 wt %, based on the total molar amount of the nitrogen element, the molar content of pyrrolic nitrogen and / or pyridinic nitrogen is above 50%, and the micropore volume of the derived carbon porous material is 0.2-0.7 cm 3 The derived carbon porous material provided by the present invention has a good adsorption capacity for water vapor and has an excellent thermal conversion capacity under certain light conditions, thereby achieving rapid water desorption.

The purpose of the present disclosure is to provide a tungsten carbide powder and a tungsten carbide mixed powder, each of which makes it possible for a cutting tool that is provided with a cemented carbide to have a long tool life if the tungsten carbide powder or the tungsten carbide mixed powder is used as a starting material for the cemented carbide.　The present disclosure relates to a tungsten carbide powder which is composed of first tungsten carbide particles each having an oxide of a first element on the surface thereof, wherein the first element is at least one element that is selected from the group consisting of titanium, zirconium, niobium, tantalum, molybdenum, cerium, and yttrium. In a first graph which shows the result, obtained by performing a line analysis using an energy dispersive X-ray spectrometer attached to a transmission electron microscope from a position X1 located inside the first tungsten carbide particles and having a distance from the outer edges of the first tungsten carbide particles of 10 nm or more toward a position X2 located outside the first tungsten carbide particles and having a distance from the outer edges of the first tungsten carbide particles of 10 nm or more, in a coordinate system in which the X-axis shows the distance from the position X1 and the Y-axis shows the content based on the number of atoms of an element, a distance P2 at which the content based on the number of atoms of the first element is maximum and a distance P3 at which the content based on the number of atoms of oxygen is maximum are present at distances farther from the origin than a distance P1 at which the content based on the number of atoms of tungsten is 0.5 times the maximum value of the content based on the number of atoms of tungsten, and the absolute value of the difference between the distance P2 and the distance P3 is 0 nm to 0.5 nm inclusive.