43results about How to "Lattice stabilization" patented technology

The invention discloses road silicate cement clinker on the basis of industrial waste residues and a method for preparing the road silicate cement clinker. The road silicate cement clinker comprises nickel slag, calcium carbide residues, zirconium-containing silica residues, bauxite tailing, desulfurization gypsum and mineralizers. The method includes mixing, grinding and homogenizing the nickel slag, the calcium carbide residues, the zirconium-containing silica residues, the bauxite tailing, the desulfurization gypsum and the mineralizers to obtain cement raw materials; preheating the cementraw materials, then calcining the cement raw materials under the condition of the temperature of 1280-1350 DEG C for 30-35 min and then carrying out cooling to obtain the road silicate cement clinker.The road silicate cement clinker and the method have the advantages that the 28 d compressive strength of the road silicate cement clinker can reach 63.9-75.2 MPa, the strength grade of the road silicate cement clinker can reach 62.5 grade, the 28 d breaking strength of the road silicate cement clinker can reach 9.8-18.2 MPa, the 28 d mortar abrasion loss of the road silicate cement clinker is lower than 2.5 kg/m<2>, cement is high in stability, and the road silicate cement clinker is high in abrasion resistance and excellent in work performance; the method is simple, complicated working procedures can be omitted, and the road silicate cement clinker and the method are low in cost.

The invention discloses a preparation method for an MOF derived oxide coated NCA high nickel ternary cathode material and belongs to the technical field of a lithium ion battery. The preparation method comprises the steps of (1), preparing corresponding metal organic frameworks (MOFs) containing specific metal elements; (2), mixing an NCA high nickel ternary cathode material with the specific MOFsaccording to a mass ratio, and carrying out ball milling, thereby enabling the MOFs to be attached to the surface of the NCA high nickel ternary cathode material uniformly; and (3), calcining the material in air, thereby changing a coating material from the MOFs to MOF derived oxides, and obtaining a final product. According to the method, through utilization of features of the nano-material MOFs, a coating layer is kept at a nano-level, so the surface of the material is protected, side reaction due to direct contact with electrolyte is reduced, and battery performance of the cathode materialis improved. The method is novel and convenient and is obvious in effect.

The invention discloses a method used for treating VOCs exhaust gas at low cost. According to the method, a soluble manganese salt and a soluble copper salt are taken as raw materials; coprecipitationis adopted to prepare a catalyst; a cloth bag-type dust collector is used for dedusting of VOCs exhaust gas; after dedusting, the VOCs exhaust gas is delivered into a reactor containing an adsorbent;after adsorption saturation, heating and desorption are carried out; after desorption, the obtained gas is delivered into a reactor containing the catalyst, and the reactor is heated so as to realizecatalytic combustion of the gas; after combustion, purified gas is obtained and discharged. The method is capable of removing VOCs gas in exhaust gas effectively; no secondary air pollution is caused; and cost is low.

The invention relates to a nickel-cobalt-manganese composite hydroxide added with hexavalent elements and a preparation method of the nickel-cobalt-manganese composite hydroxide. The nickel-cobalt-manganese composite hydroxide added with the hexavalent elements is represented by a general formula NixCoyMnz (OH) 2-2a (MO4) a, wherein x is greater than or equal to 0.30 and less than or equal to 0.92, y is greater than or equal to 0.08 and less than or equal to 0.40, z is greater than or equal to 0.02 and less than or equal to 0.50, a is greater than or equal to 0.001 and less than or equal to 0.02, x + y + z is equal to 1, and M is an added hexavalent element and represents one or a combination of molybdenum and tungsten; according to the invention, a hexavalent element-containing compound is dissolved into an alkaline solution to form a mixed alkaline solution, so atomic-scale mixing of nickel, cobalt, manganese and hexavalent elements is achieved, the internal structure of the nickel-cobalt-manganese composite hydroxide is stabilized through introduction of the hexavalent elements, and the obtained nickel-cobalt-manganese composite hydroxide added with the hexavalent elements has the advantages of being uniform in element distribution, good in dispersity and sphericity degree and stable in crystal lattice.

The invention relates to white light LED (light-emitting diode) blue fluorescent powder, a preparation method thereof and an application, belongs to the technical field of light-emitting materials, and solves the technical problems that Ba2Lu5B5O17:Ce3+ crystal-phase structures are unstable, synthetic process conditions are not easily controlled, heat stability is poor, and light-emitting efficiency is low in the prior art. The chemical formula of the fluorescent powder is Ba2-mAmLu5-x-nLnCexB5O17, wherein A refers to one of Ca and Sr, L refers to one or more of Y, La, Gd, Sc, Yb and Er, and x, m and n are mole fractions and have the value ranges of 0<x</=0.6, 0</=m</=1 and 0</=n</=2. The prepared fluorescent powder can be effectively excited by 200-380nm ultraviolet light and near ultraviolet light, is high in quantum efficiency, excellent in heat stability, simple and flexible in process and good in repeatability, and can be potentially applied to ultraviolet/near ultraviolet LEDs and chip base white LEDs.

The invention relates to a titanium-containing calcium hexaluminate material and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps:by taking 60-80wt% of aluminum oxide micro powder, 5-20wt% of calcium-containing micro powder, 10-20wt% of titanium oxide micro powder and 1-10wt% of manganous oxide micro powder as raw materials, uniformly mixing the raw materials in a planetary ball mill to obtain a mixture; then, the mixture is subjected to mechanical pressing forming under the condition of 100-200 MPa, and a green body is obtained; and drying the green body at 110-200 DEG C for 12-36 hours, and carrying out heat preservation at 1500-1800 DEG C for 1-8 hours to obtain the titanium-containing calcium hexaluminate material. Wherein the particle size D50 of the aluminum oxide micro powder is 1-8 microns; wherein the particle size D50 of the calcium-containing micro powder is 1-10 microns; wherein the particle size D50 of the titanium oxide micro-powder is 1-10 [mu] m; wherein the particle size D50 of the manganous oxide micro powder is 1-8 microns. The preparation method is low in cost and simple in process, and the prepared product has the characteristics of good chemical stability, good thermal shock resistance and strong titanium-aluminum alloy melt resistance.

The invention relates to a metal-doped calcium zirconate material, and a preparation method and a use thereof. The metal-doped calcium zirconate material comprises calcium carbonate powder, zirconia powder and iron oxide powder, and a ratio of the total mole of the zirconia powder and the iron oxide powder to the mole of the calcium carbonate powder is 1:1; and the iron oxide powder accounts for 0.05-0.15 of the total mole of the zirconia powder and the iron oxide powder. The iron-doped calcium zirconate material has the advantages of oxonium ion conductivity, electron conductivity, low price,excellent mechanical performances and excellent stability. The preparation method of the iron-doped calcium zirconate material has the advantages of simple process and low cost; and the prepared iron-doped calcium zirconate material has the advantages of extremely few pores, greatly increased compactness and greatly improved mechanical performances. The iron-doped calcium zirconate material can be used in compact diffusion barrier layers in oxygen sensors, cathodes of solid oxide fuel cells, or oxygen separation films.

The invention provides a preparing method for a mixed oxide of alkaline earth metal or lanthanide metal M and aluminium oxide. The method includes the following steps: a soluble salt solution of aluminum and a soluble salt solution of alkaline earth or lanthanide metal M are weighed and then mixed; a precipitating agent is added into the mixing solution, and the precipitation reaction is under thecondition of 5-85 DEG C; the obtained solid suspension is aged for 0.1-8 hours and then filtered and washed; the obtained sediment is dried under 80-150 DEG C for 2-20 hours; the sediment after drying is calcinated under 800 DEG C for 0.5-12 hours at a constant temperature; the temperature is raised to 1200 DEG C, the calcination is continued for 1-24 hours; the temperature is reduced to the roomtemperature, and the mixing oxide composed of MAlxOy and Al2O3 is obtained. The obtained mixing oxide of MAlxOy and aluminium oxide has the heat stability of MAlxOy, the characteristic of aluminium oxide which can easily form a porous structure is realized, the load active substance of rhodium, platinum and the like are loaded on the mixing oxide, and a load high efficiency natural gas selectingoxidation catalyst with excellent stability and high temperature resistance can be obtained.

The invention provides a perovskite quantum dot with a core-shell filling layer, a preparation method and an application, the perovskite quantum dot with the core-shell filling layer comprises a shell and perovskite quantum dot cores arranged in the shell, and a filling material is filled between the perovskite quantum dot cores in the shell. The filling material is arranged in the core-shell structure, firm chemical bonding is formed between the filling material and the surface of the quantum dot, the filling material and the perovskite quantum dot core are matched to fill the inner space of the shell, and the space confinement effect is achieved through space occupation, so that quantum dot lattices are in a relatively stable state; and the service life of the perovskite quantum dot material is further prolonged.

The invention discloses a low-threshold yellow light solid-state laser based on energy transfer. The low-threshold yellow light solid-state laser comprises a pumping source, a focusing coupling system and a resonant cavity, the resonant cavity comprises an input mirror, an output mirror and a laser gain medium, the input mirror and the output mirror are oppositely arranged in a resonant cavity body, the laser gain medium is Ce, Dy: LuGdAG transparent ceramic, the chemical formula of the laser gain medium is (Gd1-x-y-zLuxDyyCez) 3Al5O12, x is larger than or equal to 0.30 and smaller than or equal to 0.5, y is larger than or equal to 0.03 and smaller than or equal to 0.3, z is larger than or equal to 0.005 and smaller than or equal to 0.02, and the Ce, Dy: LuGdAG transparent ceramic is prepared through a coprecipitation method. Ce, Dy: LuGdAG transparent ceramic is adopted as a laser gain medium, Ce < 3 + > is co-doped, Dy < 3 + > can transmit absorbed photon energy of wavelength to Ce < 3 + >, so that 5d-4f transition of Ce < 3 + > is increased, doping of Gd < 3 + > improves energy level loss among ions, in addition, Gd < 3 + > is doped as ions with large radiuses, so that crystal lattices doped with multiple ions are more stable, and finally, efficient yellow laser output is realized.