41 results about "Pore system" patented technology

The invention belongs to the field of electrochemical energy storage material and device manufacturing, and particularly relates to a method for preparing super-capacitor carbon through ultrasonic atomization, the super-capacitor carbon and a super-capacitor electrode. The method comprises the following steps: preparing a carbonized material, a bridging conductive agent and a composite binder into slurry, performing ultrasonic atomization to form spherical liquid drops, and performing drying, pre-activation and CO2 etching to prepare the supercapacitor carbon with an integrated three-dimensional network. Through a synergistic process of spherical template construction-networked reconstruction-etching modification, controllable transformation of a material structure is realized, and the tap density, a pore channel system and a conductive network of the electrode are optimized, so that the electrode with high specific capacity, excellent rate capability and cycling stability is obtained, and the process is environment-friendly and coherent and is suitable for large-scale production.

The invention discloses a method for preparing foamed ceramic through low-temperature sintering and a product prepared through the method, and the foamed ceramic with pyroxene minerals as a main crystal phase is prepared through low-temperature sintering through silicon carbide-desulfurization slag composite foaming, szaibelyite fluxing and crystal phase regulation and control. Therefore, the composite closed pore system foaming ceramic material with high mechanical property and closed pore property is obtained. Low-cost minerals and solid wastes are adopted as main raw materials, so that the production cost of the foamed ceramic is effectively reduced, and a solid foundation is laid for large-scale industrial application of the foamed ceramic; meanwhile, efficient resource utilization of solid waste is achieved, remarkable economic and environmental benefits are achieved, and the method plays an important role in promoting industrial circular economy development and ecological environment treatment.

The invention provides a mesoporous silicate molecular sieve as well as a preparation method and application thereof, and belongs to the technical field of molecular sieves. The framework component of the mesoporous silicate molecular sieve provided by the invention is only silica, 14 kinds of topology independent atoms are contained in the framework, a 36-membered ring one-dimensional mesoporous channel system is contained in the crystal structure of the mesoporous silicate molecular sieve, and the material is good in thermal stability and can be applied as a catalyst or an adsorbent.

The invention relates to the technical field of new energy materials, in particular to a sodium ion host material, a preparation method thereof and a sodium metal battery. The material comprises a porous carbon base material, and nitrogen and phosphorus are doped in at least a surface layer region. On one hand, the rich open pore system of the porous carbon base material provides a containing space for sodium ion deposition, and the volume change is relieved; on the other hand, under the synergistic effect of the doped elements, the electronic structure and surface chemical properties of carbon atoms on the surface of the porous carbon are adjusted, the binding energy with sodium ions is improved, the sodium thinning phenomenon is improved, the nucleation overpotential of the sodium ions is reduced, then sodium dendrite growth is reduced, the polarization phenomenon is reduced, and the rate capability is improved; the surface layer area doped with the nitrogen element and the phosphorus element provides abundant active sites, sodium ions are induced to be uniformly deposited, and generation of sodium dendrites is further reduced. In conclusion, the sodium ion host material can relieve the problems of volume change, dendritic crystal growth, high nucleation overpotential and serious coulombic efficiency attenuation.

The invention discloses multi-adsorption-site nitrogen-doped porous carbon, a preparation method and application in iodine adsorption, and the preparation method comprises the following steps: carrying out primary calcination on a zeolite imidazate framework material, mixing with potassium hydroxide, and then carrying out secondary calcination to obtain the multi-adsorption-site nitrogen-doped porous carbon. According to the invention, a zeolite imidazate framework material is used as a precursor, potassium hydroxide is introduced for high-temperature calcination activation treatment, the obtained product inherits a rhombic dodecahedron framework of ZIF-8, a continuous through pore system and a nitrogen-doped carbon material with high pyrrole nitrogen content are formed, and the static adsorption capacity of the nitrogen-doped carbon material to iodine can reach 7.99 g / g.

The invention discloses a directional cultivation method for a sulfur autotrophic nitrogen removal filter material with a multi-gradient pore structure. The directional cultivation method specifically comprises the following steps: step 1, preparing raw materials; step 2, gradient mixing; thirdly, layered pressure forming is conducted; 4, controllable ablation hole forming is carried out; step 5, surface modification treatment; step 6, performance detection and optimization; 7, filter material application and effect evaluation; the nitrate nitrogen diffusion coefficient is increased by 35% and the reaction kinetic constant (k) reaches 0.23 h <-1 > through a three-stage pore system; the Zeta potential (-25mV) on the surface of the micropore promotes the adhesion of bacteria, and the forming time of a biological membrane is shortened by 30%; the solid deposition rate is reduced through the large-hole channel spacing design, and the operation cycle is prolonged to two times of that of a traditional filter material.

The invention belongs to the technical field of advanced functional ceramics, and particularly relates to a silicon carbide ceramic filter with bionic structural design and a 3D printing method thereof. Comprising the following steps: constructing a silicon carbide ceramic filter structure: constructing a three-dimensional unit cell structure with a deflection angle of 0 degree, + / -45 degrees or 60 degrees by taking glass sponge octagonal meshes as a bionic prototype, and periodically and repeatedly arranging in a three-dimensional space along X-axis, Y-axis and Z-axis directions to obtain a filter structure with a multi-stage communicated bionic pore system; and preparing the water-based SiC slurry with the solid content of more than or equal to 70wt%. Performing 3D printing by using a pneumatic-screw composite extrusion direct writing process to obtain a ceramic structure initial blank, and performing sintering post-treatment to obtain the silicon carbide ceramic filter. The prepared filter is high in bending strength and high in molten metal inclusion removal rate, has complex structure forming capacity, efficient filtering performance and stable mechanics, and provides a new way for efficient and low-cost preparation of silicon carbide ceramic complex parts.

The invention relates to a defect-containing material micro-pore structure characterization and regional crack extension prediction method, which is characterized by comprising the following steps of: firstly, carrying out quantitative processing on an electron microscope scanning image through matlab software, and then carrying out pore identification and parameter calculation on the processed image to obtain pore structure parameters; the method comprises the following steps: firstly, carrying out electron microscope detection on a pore system, then calculating fractal dimensions of the pore system by utilizing a box counting method, generating micropores which are not detected by an electron microscope and new pores formed by compression by utilizing a fractal dimension algorithm, carrying out regional division on clustered pores, and finally, carrying out multi-scale fitting and overall fitting according to a concept that compressed macropores are preferentially communicated. According to the method, the algorithm is reasonable, image processing, fractal calculation and clustering analysis can be seamlessly integrated, a set of automatic analysis process is formed, the analysis efficiency and repeatability are improved, and an effective technical tool is provided for high-throughput scanning electron microscope image processing, mass microscopic data mining and rapid evaluation of material performance.

The invention discloses a pseudo-boehmite material as well as a preparation method and application thereof, and relates to the technical field of inorganic non-metallic materials. The pseudo-boehmite material has a developed pore system, the specific surface area of the pseudo-boehmite material is 350-450m / g, the pore volume of the pseudo-boehmite material is 1.2-1.8 cm / g, the average pore size of the pseudo-boehmite material is 10-15nm, and X-ray diffraction detection shows that clear characteristic diffraction peaks exist at 2 theta = 14.3 + / -0.2 degrees, 28.1 + / -0.2 degrees and 38.4 + / -0.2 degrees in an XRD (X-Ray Diffraction) pattern, the diffraction peak intensity is moderate, the peak shapes are symmetrical, and the material is complete in crystal structure and relatively high in purity. According to the pseudo-boehmite material and the preparation method and application thereof, the preparation method is simple and easy to control in technological process, the raw materials are low in cost and wide in source, and the prepared pseudo-boehmite material has excellent pore structure performance, so that the prepared pseudo-boehmite material has a good application prospect. Good application prospects are shown in the fields of petrochemical engineering catalyst carriers, environmental pollutant adsorbents and the like.

The invention relates to a low-green-coke heavy oil catalytic cracking catalyst with gradient pore channels and a dynamic active crystal face and a preparation method thereof, and belongs to the technical field of petroleum refining catalysts. The catalyst comprises the following components by taking the overall dry base weight of the catalyst as a reference: 10%-30% of a zirconium-titanium-lithium dynamic active matrix, 20%-40% of a tantalum-doped mesoporous cerium oxide coated ultra-stable Y-type molecular sieve, 30%-50% of a gradient pore channel carrier, 10%-30% of clay and 5%-15% of an inorganic oxide binder. The preparation method comprises the following steps: complexing roasting of the dynamic active matrix, hydro-thermal synthesis of the confinement encapsulated molecular sieve, mixing molding of the carrier and each component, and gas-phase silanization post-treatment. According to the catalyst disclosed by the invention, heavy oil macromolecular mass transfer is optimized by constructing a gradient pore channel system, and excessive cracking coke formation is inhibited by utilizing a dynamically changed B / L acid ratio of an active component, so that the heavy oil conversion rate is gt; the coke yield is reduced to 4.0% or below, the mechanical strength is high, and the industrial application prospect is good.

The application discloses a kind of based on KAN's multiple pore rock-soil medium consolidation process analysis method and system, belong to the field of soil consolidation analysis.This method includes: obtaining the data including time, depth and each pore system pore water pressure in the consolidation process of multiple pore rock-soil medium, establishes data set and carries out pre-processing;KAN is trained to obtain the control equation describing the consolidation process of multiple pore rock-soil medium by inversion;PiKAN based on physical information is constructed, the control equation and the initial condition and boundary condition of consolidation process are used as physical constraint, and embedded in loss function;PiKAN is trained using the pre-processed data set, and the pore water pressure of each pore system of multiple pore rock-soil medium at different times and depths is solved.The KAN based on physics and data driving can quickly and effectively obtain the pore water pressure of multiple pore rock-soil medium with less test data, and provide technical support for related engineering stability evaluation.

The invention discloses modified magnetic sludge activated carbon as well as a preparation method and application thereof. Sludge is taken as a carbon source, Fe3O4 is introduced, a zinc chloride / phosphoric acid double activator is adopted for impregnation, and after a pore system mainly comprising micropores is formed through segmented activation in an inert atmosphere, water vapor is introduced at a high temperature for reaming to obtain a pore structure mainly comprising mesopores and macropores; and carrying out acid pickling and secondary carbonization to obtain particles with both strength and magnetism. The specific surface area of the product is 700-900 m < 2 > / g, the ratio of mesopores to macropores is greater than 75%, the stacking density is 0.95-1.05 g / cm < 3 >, the hardness is greater than 90%, and the Ms is 18-25 emu / g. The device is suitable for advanced treatment of petrochemical wastewater and double-membrane concentrated water, and can also be used as a biological activated carbon carrier and matched with magnetic separation for online recovery.

A fiber-based support structure for the production of fiber composites, comprising:a first reinforcing fiber component, anda second reinforcing fiber component,wherein said first reinforcing fiber component is finite fibers that are in a random arrangement, wherein said second reinforcing fiber component is finite fiber bundles having an average fiber bundle length of less than 45 mm that are in a random arrangement, wherein the fibers that constitute the fiber bundles of said second reinforcing fiber component are glass fibers, and wherein said fiber-based support structure has a pore system for soaking with a plastic matrix.

The invention provides a saturation model building method considering a crack inclination angle and application, and the method comprises the steps: 1, giving an equivalent medium theory and a conductivity tensor model of any inclination angle in a porosity index model building process; 2, determining a saturation expression of the matrix pore type reservoir; and 3, converting the porosity attached to the matrix pores of the fracture-vug type pore system to the matrix pore system. And step 4, combining the steps 1-3 to obtain a fracture-vug type reservoir matrix water saturation expression considering the fracture dip angle. The saturation model considering the crack inclination angle, which is obtained by adopting the method, can be used for oil and gas evaluation work in the petroleum industry.

The invention belongs to the technical field of petroleum exploration, and discloses a method, a device and a medium for constructing heterogeneous plastid configuration data, and the method realizes the construction of the heterogeneous plastid configuration data through covariance matrix and feature acquisition, matrix dimension reduction processing and identification processing of heterogeneous feature data. According to the method, the maximum common data of the stratigraphic structure with strong background energy is eliminated by means of matrix dimension reduction processing and the like, weak seismic signals in heterogeneous plastid configurations such as a small-scale pore system and the like are extracted and enhanced, and then high-precision space engraving of the small-scale pore system is achieved. The device and the medium provided by the invention are suitable for constructing a data model of a heterogeneous plastid configuration.

The invention discloses a KAN-based multi-pore rock-soil medium consolidation process analysis method and system, and belongs to the field of heaping consolidation analysis. The method comprises the following steps: acquiring data including time, depth and pore water pressure of each pore system in the consolidation process of the multi-pore rock-soil medium, establishing a data set and preprocessing the data set; training the KAN to obtain a control equation for describing the consolidation process of the multi-pore rock-soil medium through inversion; constructing a PiKAN based on physical information, and embedding a loss function by taking a control equation and initial conditions and boundary conditions of a consolidation process as physical constraints; and training the PiKAN by using the preprocessed data set, and solving the pore water pressure of each pore system of the multi-pore rock-soil medium at different time and depths. Based on the KAN driven by physics and data, the pore water pressure of the multi-pore rock-soil medium can be rapidly and effectively measured under the condition of less test data, and technical support is provided for related engineering stability evaluation.

The invention relates to the technical field of rock physical analysis in oil-gas exploration and development, and particularly provides a shale full-size pore structure characterization method which comprises the following steps: acquiring high-pressure mercury injection experimental data and nuclear magnetic resonance experimental data of a shale sample, dividing a pore system of the shale sample into a small pore section and a large pore section by an inflection point of fractal dimension, respectively fitting the pore throat radius of the small pore section and the pore throat radius of the large pore section with the transverse relaxation time to obtain two groups of conversion coefficients, respectively inverting the pore diameter distribution curve of the small pore section and the pore diameter distribution curve of the large pore section by utilizing the two groups of conversion coefficients, and carrying out segmented integration according to the intersection point of the two curves to characterize the full pore diameter distribution of the shale sample. According to the method, a fractal inflection point division pore system is introduced, deep structure information is excavated by utilizing a fractal theory, segmentation fitting is carried out, and the technical problems that a traditional HPMI-NMR conjoint analysis method is insufficient in precision under the conditions of large displacement pressure, low mercury injection saturation and strong heterogeneity are solved.

The application provides a saturation model construction method considering a crack inclination and application, and the method comprises the following steps: 1, in the model establishment process of the porosity index, an equivalent medium theory and a conductivity tensor model of an arbitrary inclination are given; 2, a saturation expression of a matrix pore type reservoir is determined; 3, the porosity attached to the matrix pore system of a fracture-vug type pore system is converted to the matrix pore system; and 4, the matrix water saturation expression of the fracture-vug type reservoir considering the crack inclination is obtained by combining steps 1-3. The saturation model considering the crack inclination obtained by the method can be used in oil and gas evaluation work in the oil industry.

The invention provides a method for separating and purifying pomegranate peel polyphenol based on a metal organic framework material, and belongs to the technical field of natural product extraction. The method comprises the following steps: (1) mixing a magnetic metal organic framework material with a pomegranate peel polyphenol crude extract, stirring for 50-70 minutes, and carrying out solid-liquid separation to obtain a magnetic metal organic framework material loaded with pomegranate peel polyphenol; (2) adding an elution solvent into the magnetic metal organic framework material loaded with pomegranate peel polyphenol, stirring, standing, and carrying out solid-liquid separation to obtain polyphenol eluent and precipitate; and (3) concentrating and drying the polyphenol eluent to obtain the high-purity pomegranate peel polyphenol. According to the invention, the inherent defects of the traditional resin in selectivity and dynamics are overcome by utilizing the specific regular pore system and metal active sites of the MOF material, and a better technical path is provided for deep development of pomegranate rind wastes.

Disclosed herein is a method for identifying a high producibility zone in a shale reservoir. The method includes obtaining a total organic carbon (TOC) content and an organic sulfur content of a formation interval using geochemical measurements and determining a dielectric dispersion response of the formation interval using dielectric measurements. The dielectric dispersion response is processed to obtain an aperture system tortuosity parameter. The pore system tortuosity parameter correlates to a ratio of organic sulfur content to TOC content to identify the presence of a mature kerogen zone with high or low hydrocarbon producibility, an immature kerogen zone in which clay is present, and a non-producible or over-mature zone within a formation interval. The correlation is performed by comparing the ratio of organic sulfur content to TOC to an organic matter maturity threshold and comparing the pore system tortuosity parameter to a pore system tortuosity parameter threshold.

A battery may include an anode, a cathode positioned opposite to the anode, a separator positioned between the anode and the cathode, an electrolyte dispersed throughout the cathode and in contact with the anode, and a dual-pore system. The anode may be configured to release a plurality of lithium ions. The cathode may include a plurality of pathways defined by a plurality of porous non-hollow carbonaceous spherical particles and may include a plurality of carbonaceous structures each based on a coalescence of a group of the porous non-hollow carbonaceous spherical particles. The dual-pore system may be disposed in the cathode and defined in shape and orientation by the plurality of carbonaceous structures. In some aspects, the dual-pore system may be configured to receive gaseous oxygen from the ambient atmosphere.

Disclosed in the present invention are a preparation method for a high-performance foam ceramic and a product prepared therefrom. By introducing dolomite, lithium slag, and copper tailings as raw materials, the firing temperature of the foam ceramic is effectively reduced, promoting the formation of a crystal structure having diopside, feldspar and quartz as main crystal phases as well as a composite closed-pore system in the foam ceramic during sintering. The unique structure and system of the present invention not only significantly enhance the flexural strength of the foam ceramic, ensuring the structural stability thereof, but also effectively maintain the high-porosity characteristics of the material, thereby realizing the dual optimization of mechanical properties and porous properties. The present invention can not only effectively reduce the firing temperature, but also has a positive promoting effect on improving resource utilization efficiency and environmental protection.

The application provides a shale fluid phase change feature evaluation method and device, electronic equipment and a storage medium. A corresponding multi-scale pore model is established by obtaining pore size distribution parameters in a shale pore system, the composition of the fluid in each pore is obtained, and the initial dew point temperature and / or bubble point temperature can be determined by the initial physical property parameters corresponding to each composition. The balance physical property parameters in the corresponding pore balance state are determined, and the effective pore size of each pore is determined. The actual dew point temperature and / or bubble point temperature is obtained, and the phase change feature of the shale pore system is determined. The actual dew point temperature and / or actual bubble point temperature distribution of the system can be accurately obtained, the influence of the pore size distribution on the phase change feature is analyzed, and the accuracy of the specific pore phase change feature evaluation in the shale fluid system is improved.

This invention provides a heat exchanger for a dilution refrigerator, a manufacturing method thereof, and the dilution refrigerator itself, relating to the field of dilution refrigerator technology. The heat exchanger includes multiple sequentially connected heat exchange units, each unit comprising a heat-conducting element, two covers, and a filling material. The two covers are respectively disposed on both sides of the heat-conducting element to define a first chamber and a second chamber. A flow-through flow mechanism is present in the first chamber. 3 He solution, with flow in the second chamber. 3 He solution and 4 A mixture of He solutions, to make 3 The He solution and the mixture exchange heat through a heat-conducting element. A packing material is disposed in the first and second chambers, and a first pore system is formed inside the packing material to facilitate the increase of heat exchange. 3 The heat exchange area between the He solution and the mixture is increased. A second pore system is also formed inside the packing, which is suitable for increasing the heat exchange area while simultaneously increasing... 3 The depth to which He solution and mixture penetrate into the interior of the filler.

Sinking bodies for angling made of binder and additives (density >= 2.0 g / cm³) 3 ), characterized in that it has an open pore system (3) for capillary absorption of liquids.

The application belongs to the field of purification materials, and particularly relates to a desulfurization catalyst bamboo active carbon. The method comprises the following steps: 1) crushing bamboo, and performing pretreatment to obtain a bamboo base; 2) performing biological pretreatment on the bamboo base, and performing stabilization treatment to obtain a precursor; and 3) performing segmented activation on the precursor to prepare the desulfurization catalyst bamboo active carbon. The application realizes directional construction of multi-stage pores through a biological-chemical composite process, forms a "micropore-mesopore-macropore" high-efficiency interconnected hierarchical pore system, greatly improves diffusion and mass transfer effects of a desulfurization catalysis process, has excellent desulfurization catalysis effects and stable physical and chemical properties, and still has good desulfurization effects under a wet and hot condition.

The application discloses a kind of anthracite-based porous carbon materials and its gradient activation preparation method and application, it is related to carbon material preparation technical field, its technical scheme main point is: the inert surface of anthracite is broken under mild conditions by using low-temperature plasma in the present application, initial defect is introduced and in-situ doping is carried out;Then, the particles are refined by mechanical chemical action, and the sodium salt is uniformly embedded, providing a template for subsequent pore forming;Then, the gradient strategy of low-temperature steam opening and high-temperature expansion is used to cooperatively build a microporous, mesoporous hierarchical interconnected pore system;Finally, impurities are removed to obtain high-purity materials, the present application enables the finally prepared porous carbon material to have a high specific surface area of 1620-2080 m² / g, a suitable mesopore ratio of 62-72%, and a controllable nitrogen doping amount of 1.9-2.8 at.%.

The invention relates to the technical field of porous material permeability testing, in particular to a fractal dimension determination method and device based on permeability contribution, equipment and a medium. Acquiring mercury injection experiment data of the rock sample; dividing the pore structure of the rock sample into at least two pore systems according to the mercury injection experiment data; calculating the cumulative permeability contribution value and fractal dimension of each pore system according to the mercury injection experiment data; calculating a corresponding permeability contribution weight factor according to the cumulative permeability contribution value of each pore system, wherein the cumulative permeability contribution value of the pore system is obtained according to the permeability contribution values of all the measurement points in the pore system; weighted summation is carried out according to the permeability contribution weight factor and the fractal dimension of each pore system, the comprehensive fractal dimension of the rock sample is obtained through calculation, and the accuracy of the fractal dimension is improved.