9results about How to "Microporous increase" patented technology

The present application relates to the technical field of biomedicine, and specifically discloses a sodium alginate embolic particle and its preparation method and application. The preparation method of the sodium alginate embolic particle disclosed in the present application comprises the following steps: dissolution, primary freeze drying, infiltration, cross-linking, secondary freeze drying, crushing and screening, and sterilization; dissolution is: preparing a 1.7-2.3wt% sodium alginate aqueous solution, adding a freeze-drying protective agent, stirring at 55-65°C, and cooling to 0-5°C; infiltration is: infiltrating the sodium alginate sponge obtained by primary freeze drying in a sodium alginate aqueous solution with a mass concentration of 0.1-0.8wt% to reach saturation, and obtaining a sodium alginate infiltrate; cross-linking is: immersing the sodium alginate infiltrate in a cross-linking liquid for cross-linking reaction. Using the technical solution provided by the present application, sodium alginate embolic particles with high porosity, uniform particle size, small average pore size, suitable water absorption, excellent suspension performance, and excellent catheter passing performance can be obtained.

The invention relates to coconut shell columnar activated carbon as well as a preparation method and application thereof. The preparation method of the coconut shell columnar activated carbon comprises the following steps: mixing and dipping coconut shell powder and an alkaline solution, and carbonizing to prepare a coconut shell carbonized material; mixing the coconut shell carbonized material with a binder and a solvent, and performing extrusion molding to prepare columnar carbon; the columnar carbon and a metal salt solution are mixed and soaked, metal salt loaded columnar carbon is prepared, and the metal salt solution comprises one or more of a sylvite solution and a sodium salt solution; and roasting and activating the metal salt loaded columnar carbon to prepare the coconut shell columnar activated carbon. The preparation method of the coconut shell columnar activated carbon is beneficial to increasing the specific surface area, and when the coconut shell columnar activated carbon is used for decomposing methyl chloroformate, the decomposition rate is increased.

The application provides a high-capacity and high-rate hard carbon negative electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion battery negative electrode materials. Specifically, biomass shell raw materials are coarsely broken and sieved to obtain biomass coarse powder; the biomass coarse powder is mixed with an oxidizing agent and then pre-oxidized; mechanical pulverization is performed to obtain biomass coarse powder with a D50 of 8-15 microns; the biomass coarse powder is added into mixed acid and heated in a water bath, and then washed with water until neutral to obtain a purified precursor; and finally, the precursor is subjected to staged high-temperature carbonization in a vacuum carbonization furnace. Through specific process parameters, the prepared hard carbon material has a hierarchical porous structure and a suitable graphite microcrystalline layer spacing, and has a low total content of metal impurities; when applied to a sodium ion battery negative electrode, the hard carbon material exhibits a high reversible specific capacity, a high initial coulombic efficiency, and excellent long cycle stability and rate performance.

The application discloses an activated carbon hazardous waste treatment method and relates to the field of hazardous waste treatment, aiming to solve the problems of traditional processes in parameter control, regeneration effect and safety guarantee and the like, and specifically comprises the following steps: collecting organic functional group characteristic data and water content data of activated carbon hazardous waste to be treated; inputting a machine learning model and outputting target temperature T L of a low-temperature section of a rotary kiln, target temperature T H of a high-temperature section and minimum residence time t of the high-temperature section; controlling the low-temperature section of the rotary kiln to treat the activated carbon hazardous waste in the interval [T L -15 ℃, T L +15 ℃] according to T L , and detecting the concentration of benzene series, and when the concentration is reduced to a predetermined concentration, the activated carbon hazardous waste is transported to the high-temperature section; controlling the high-temperature section of the rotary kiln to be treated for at least t minutes in the interval [T H -20 ℃, T H +20 ℃] according to T H and t; and sending the activated carbon hazardous waste from a discharge port of the rotary kiln into a quenching tower. The application improves the recycling value of the regenerated activated carbon, and takes into account the environmental protection effect and treatment economy.

The embodiment of the invention relates to a high-strength and high-plasticity steel material and a preparation method and application thereof, and belongs to the technical field of steel and iron materials. The high-strength and high-plasticity steel material disclosed by the embodiment of the invention comprises the following components in percentage by weight: 0.05 to 0.10 percent of C, 0.40 to 0.80 percent of Si, 0.50 to 1.50 percent of Al, 2.00 to 2.50 percent of Mn, 2.00 to 2.50 percent of Cu, 1.00 to 2.00 percent of Ni, 0.10 to 0.25 percent of Mo and 0.05 to 0.15 percent of Nb. The yield strength and the uniform elongation of the steel material are both greatly improved, and a large number of nano Cu clusters appearing in a steel matrix are the reason for greatly improving the yield strength of the steel material; and in addition, the nanometer reverted austenite generated at the steel matrix structure interface provides a high extension effect for the steel material.

The present application relates to mineral composite catalytic material preparation, and particularly relates to a TiO2@NH2-MIL-125 / diatomite composite material for significantly improving photocatalytic CO2 reduction and a preparation method thereof.The material obtained by the present application has an "S" type carrier transport characteristic, which reduces the hole-electron pair recombination rate, and retains the strong oxidation reaction sites on the TiO2 and the strong reduction reaction sites on the NH2-MIL-125, and further significantly improves the photocatalytic CO2 reduction efficiency and stability.In addition, the catalyst has a multi-level pore structure, a large specific surface area and a strong light absorption capacity, so that the photocatalytic activity is improved, the product CO is easy to desorb on the surface, and the active sites are favorably reused, and the stability of the photocatalyst is enhanced.Meanwhile, the catalyst of the present application has a good application prospect in the field of photocatalytic CO2 reduction, the raw material is relatively cheap, the preparation method and operation are simple, and the catalyst is suitable for large-scale production.

The invention relates to the technical field of air purification, and discloses an aerogel composite material for air purification and a preparation method thereof.The preparation method comprises the following steps that carbon aerogel is pretreated with a copper salt solution, a reducing agent, an alkaline substance and thiocyanate; uniformly mixing the pretreated carbon aerogel, industrial silica sol, boric acid and a surfactant, and adding hydrofluoric acid to obtain wet gel; carrying out drying treatment on the wet gel to obtain dry gel; and carrying out segmented thermal activation on the dry gel, and carrying out modification treatment in a trimethylchlorosilane steam reactor to obtain the aerogel composite material. The carbon aerogel is used as an inner layer, the silicon dioxide aerogel is used as an outer layer, and the chemical composition and the structure of the composite material are regulated and controlled through physical and chemical methods, so that the adsorption efficiency and the adsorption capacity of the material on tobacco smoke are effectively improved.

The invention discloses an amorphous carbon material, a preparation method and application thereof, and a sodium ion battery, the preparation method comprises the following steps: 1) mixing sucrose with ammonium dihydrogen phosphate, and heating to obtain pretreated sucrose; (2) mixing the pretreated cane sugar with resin for coating; and (3) carrying out high-temperature carbonization treatment on the coated cane sugar, so as to obtain the amorphous carbon material. The material with a special pore structure is prepared, and when the material is used as a sodium-ion battery negative electrode material, on the basis of improving the sodium storage capacity, the carbon yield is improved, and the cost can be further reduced.

The utility model relates to the technical field of compound mixing equipment, and discloses special compound mixing equipment for biological carbon-rich grassland remediation, which comprises a fixing frame, a mixing box is fixedly mounted in the fixing frame, a rotating shaft II is movably mounted in the mixing box, a stirring rod is fixedly mounted on the outer surface of the rotating shaft II, and a stirring shaft is fixedly mounted on the outer surface of the stirring rod. And a stirrer is fixedly mounted at one end of the stirring rod. Compared with traditional equipment, organic fertilizer and microorganisms are evenly mixed in the mixing box through cooperation of the second rotating shaft, the stirring rods and the stirring blades, the organic fertilizer, carbon-based fertilizer and the microorganisms are mixed for use through accurate stirring of the stirring rods and the stirring blades, the comprehensive benefits of the fertilizer can be remarkably improved, and the production cost is reduced. The organic fertilizer provides rich nutrients for soil, the carbon-based fertilizer is stable and adsorbs nutrients, release is delayed, loss is reduced, microorganisms participate in decomposition of organic substances, more nutrients are released, absorption and utilization of plants are promoted, and the utilization rate of the fertilizer is increased.