18 results about "Elemental oxygen" patented technology

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.

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.

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.

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.

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.

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 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 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.

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 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.

To provide a method for recovering rare earth elements by which the rare earth elements can be recovered at a low cost by reducing the cost without increasing the environmental load.SOLUTION: Performing a treatment (heat treatment) of applying activation energy to a rare earth element-containing composition containing a rare earth element, an iron group element, and oxygen under an inert gas atmosphere or a vacuum atmosphere; A mixture containing oxides of rare earth elements and metals of iron group elements is obtained (S10), the mixture is separated into the metals of the iron group elements and the remainder excluding the metals of the iron group elements by pulverization and separation (S11), the oxides of the rare earth elements are recovered by purification of the remainder excluding the metals of the iron group elements after the separation, and the rare earth elements are recovered from the oxides of the rare earth elements (S12).SELECTED DRAWING: Figure 1

The application discloses a kind of stratum water salinity and oil saturation comprehensive calculation method based on lithology scanning.The original measurement energy spectrum and time spectrum of stratum are measured using measurement system, after obtaining the inelastic yield and capture yield of stratum by analyzing original measurement energy spectrum based on stratum element standard spectrum, element yield is converted into atomic number ratio, the inelastic atomic number ratio of carbon element, oxygen element and magnesium element and the capture atomic number ratio of remaining elements in stratum are used to construct stratum element atomic number ratio dataset, the mass fraction of each element in stratum is determined, the macroscopic capture cross section of stratum is obtained by processing time spectrum, combined with the mass fraction of chlorine element, the porosity and density of stratum, stratum water salinity and oil saturation comprehensive calculation model is established to calculate stratum water salinity and oil saturation.The application solves the influence of poor chlorine element content calculation accuracy on stratum water salinity and oil saturation monitoring accuracy, and widens the application range of element logging.

A dry electrode mixture 38 contains an electrode active material 40, a conductive material 42, and a binder 44, and has a structure in which a composite 46 of the conductive material 42 and the binder 44 covers the surface of the electrode active material 40 in a net shape. With respect to a first phase that is composed of an element derived from the electrode active material 40, an element derived from the conductive material 42, and elemental oxygen, a second phase that is composed of an element derived from the electrode active material 40, an element derived from the conductive material 42, an element derived from the binder 44, and elemental oxygen, and a third phase that is composed of an element derived from the conductive material 42, an element derived from the binder 44, and elemental oxygen, which are obtained by SEM-EDX analysis of the dry electrode mixture 38, if A is the area ratio of the third phase to the total area of the first phase, the second phase, and the third phase and B is the amount of the element derived from the binder 44 in the third phase, A × B is more than 0.25 wt%.

A light-emitting element (10) comprises: an anode (2); a cathode (5); and a light-emitting layer (EML) that is provided between the anode (2) and the cathode (5) and that includes quantum dots (QD). The light-emitting layer (EML) contains an oxide of elemental Si as an adduct (XO) of the quantum dots (QD), and an Si atom is bonded to one oxygen atom and three hydrocarbon groups (R1, R2, and R3) of the Si atom at a part of terminal portions of the chemical structure of the oxide. The hydrocarbon groups (R1, R2, and R3) are each a terminal of the chemical structure of the oxide. The elemental Si is contained in the oxide in a greater amount than that of elemental carbon, and, together with elemental oxygen, forms the backbone of the oxide.