767 results about "Clay minerals" patented technology

Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-energy mill of the clay mineral, and performing a liquid leach to obtain a lithium rich leach solution.

The invention relates to the technical field of land improvement, in particular to an alginic acid type multifunctional long-acting soil conditioner and a preparation method and application of the alginic acid type multifunctional long-acting soil conditioner. The core particle layer comprises an organic material, nano silicon, calcium magnesium polyphosphate, magnesium hydride, ammonium borate, rhamnose and an adhesive, and the slow release layer comprises clay minerals and alginate; the mass ratio of the clay mineral to the alginate to the organic material to the calcium magnesium polyphosphate to the nano silicon to the magnesium hydride to the ammonium borate to the rhamnose to the binder is controlled within a certain range. The soil conditioner provided by the invention is good in slow release performance, can release effective components durably and slowly, and has multiple effects of improving soil quality, providing nutrition, promoting crop growth, improving resistance and the like; the problems of soil acidification, heavy metal pollution, micro-plastic pollution, pesticide pollution, antibiotic pollution and the like in agricultural production can be effectively solved.

The invention discloses a multifunctional water-retaining agent adapted to acid soil and a preparation method thereof, and the multifunctional water-retaining agent is prepared from the following raw materials in parts by weight: 9-11 parts of a chitosan solution with the concentration of 0.019-0.021 g / mL, 9-11 parts of a sodium polyphosphate solution with the mass concentration of 0.5-1%, 24-25 parts of an acrylic acid solution with the neutralization degree of 80-85%, 9-11 parts of a guar gum solution with the concentration of 0.019-0.021 g / mL and the balance of water. The mass of the methylene bisacrylamide accounts for 0.01-0.03% of the total dry matter mass of the chitosan, the guar gum and the acrylic acid, the mass of the ammonium persulfate accounts for 0.25-0.35% of the total dry matter mass of the chitosan, the guar gum and the acrylic acid, and the clay mineral accounts for 10-12 parts; the preparation method comprises the following steps: S1, pre-preparation; S2, mixing; and S3, post-treatment. The prepared water-retaining agent not only can greatly improve the water absorption and water retention performance of the chitosan water-retaining agent, but also can reduce the acidity of acid soil and improve the CEC and fertilizer retention capacity of the soil, and is a multifunctional acid red and yellow soil conditioner.

A method for separating liquid-like (T2e) from solid-like (T2G) 1H NMR transverse relaxation times in porous media uses novel pulse sequences together with a 1H NMR spectrometer optimized for geological core samples. The method is applied to obtain 1D T2 distributions and 2D T1-T2 maps in organic-rich chalks for quantification of liquid-like signal (micropore fluids, meso-macropore fluids, fluids dissolved in organic matter, and clay-bound water) and solid-like signal (kerogen, bitumen, and clay hydroxyls). The novel pulse sequences comprise a solid-echo, which detects more solid-like signal than an FID. The method is used for fluid typing in micro / meso-macro pores, clay mineral identification, determination of kerogen content, and quantification of solvent-extracted bitumen versus bitumen expelled from kerogen due to swelling from dissolved hydrocarbons. The method is used to quantify the asphaltene, resin, aromatic, and / or saturate content of bitumen in the rock.

The invention provides a dump leaching method for improving the leaching rate of gold ore, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, separating minerals into oversize products and undersize products; mixing sodium carboxymethyl cellulose, bentonite and ferrous sulfate to obtain a mixture, and granulating the undersize product by using the mixture as a binder; and mixing the undersize product particles with the oversize product, and carrying out cyanide-free dump leaching. According to the method, through graded granulation and heap building, the problem that heap building permeability is poor due to the fact that the gold ore contains many clay minerals is solved. In the granulation stage, ferrous hydroxide colloid generated by hydrolysis of ferrous sulfate in the binder can assist ore particle agglomeration, and particle stability is enhanced; during subsequent cyanide-free dump leaching, ferrous sulfate can be used as an auxiliary reducing agent and a catalyst in a thiourea gold leaching system to promote oxidation and dissolution of gold; meanwhile, ferrous ions can adjust the oxidation-reduction potential of a system, so that the thiourea gold leaching reaction is in a more favorable potential interval, the oxidation efficiency of thiourea is improved, invalid decomposition of thiourea is reduced, and therefore the use amount of thiourea and the use amount of agents are reduced.

The invention provides a high-precision recovery method and system for judging the sedimentary environment of marine facies mixed-volume shale, which is characterized in that on the basis of microscopic slice fine identification, the types of minerals in a sample are preliminarily identified by XRD (X-Ray Diffraction), the mineral color change under a cathode luminescence test is combined, and the mineral composition is analyzed by XRD; three main end members of carbonate minerals, clay minerals and siliceous minerals are used for triangular projection so as to identify main lithofacies types of the mixed-volume shale and plane distribution characteristics of various lithofacies; through TOF-SIMS, micro-area mineral composition and micro-area element change identification in the mixed shale is carried out, and a biomarker compound in organic geochemistry is used for sedimentary environment identification, so that sedimentary environment change corresponding to complex lithofacies change of the mixed shale is identified, and the formation mechanism of the mixed shale is clarified.

The invention relates to the technical field of carbon dioxide sequestration and shale gas development, and particularly discloses a shale micro-nano pore multiphase multicomponent competitive adsorption data determination method and device, and the method comprises the steps: obtaining a shale core sample of a target area, and determining the type and relative content change characteristics of surface functional groups of the shale core sample; key structures and force field parameters of shale clay minerals in a target block are collected, and a shale clay mineral molecular model is established; establishing a plurality of fluid molecular models; establishing slit models, and establishing a multiphase fluid system model between the slit models to obtain a stable configuration; applying an external electric field to the stable configuration, and performing molecular dynamics calculation to obtain molecular trajectory coordinates and dynamics information of the multi-phase multi-component fluid; and calculating competitive adsorption data of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field. According to the scheme, the occurrence state and the competitive adsorption behavior of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field can be disclosed from the molecular scale.

The invention discloses an efficient ion adsorption type rare earth ore deposit prospecting exploration method which comprises the following steps: 1) delineating a prospecting prospecting area indoors through a geochemical exploration weak anomaly extraction technology; 2) investigating the rare earth mineralization enrichment law and the characteristics of rare earth minerals and clay minerals in the prospecting prospective area, carrying out large-scale geological mapping in the field, and delineating a prospecting target area; and 3) quickly positioning and evaluating the rare earth ore body through a field on-site manual percussion drill technology. According to the method, through the technical combination of the rare earth enrichment mechanism, the mineralogy, the chemical exploration weak anomaly extraction technology and the field rapid evaluation technology, rapid prospecting exploration is achieved, the prospecting efficiency and success rate of the rare earth ore are greatly improved, the time is shortened, the procedure is simplified, and the cost is greatly reduced.

The invention discloses a preparation method of a photo-thermal super-hydrophobic coating with excellent anti-icing / deicing performance in a low-temperature and high-relative-humidity environment, which comprises the following steps of: firstly, growing photo-thermal Cu-MOF (Metal Organic Framework) nano particles on the surfaces of fibrous clay mineral nano particles with low heat conductivity coefficient in situ to construct composite photo-thermal particles with a two-stage nano / nano structure; the preparation method comprises the following steps: preparing nano-particles, then carrying out low surface energy modification on the nano-particles, introducing a low-heat-conductivity-coefficient binder, inducing the binder to generate phase separation through a non-solvent to form a micron-scale binder / low-surface-energy nano-particle aggregate, and finally, spraying to construct the photo-thermal super-hydrophobic coating with a three-level micro / nano / nano structure. The three-level micro / nano / nano structure of the coating simultaneously endows the coating with excellent photo-thermal performance in a low-temperature and high-relative-humidity environment and Cassie-Baxter state stability of liquid drops on the surface of the coating, so that the coating has excellent passive anti-icing / frosting and active deicing / defrosting performance in the environment. The low heat conduction characteristic of the coating further inhibits heat exchange between the base material and water drops, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the invention also has the advantages of simple preparation method, large-area preparation and the like, and lays a solid foundation for the practical application of the photo-thermal super-hydrophobic anti-icing coating.

The invention discloses a method for preparing an adsorbent from clay minerals and carbide slag, and belongs to the technical field of deep processing of natural nonmetallic minerals and preparation of heavy metal adsorption functional materials. According to the method, natural clay and carbide slag serve as raw materials, the composite adsorption material containing various metal active sites is prepared through a solid-phase reaction, and the composite adsorption material is suitable for efficient removal of high-concentration and low-concentration heavy metal ions. The raw materials are cheap and easy to obtain, the preparation process is simple and efficient, and the product has excellent performance, wide application and wide prospects.

The invention discloses a method for preparing a saline-alkali soil conditioner by activating coal-based solid waste through a microbial agent, and is suitable for the fields of coal-based solid waste resource utilization and soil improvement. Coal gangue and weathered coal are crushed, screened and then mixed, a proper amount of salt and clay mineral are added into a culture medium, microorganisms with an activation effect on elements in the coal gangue and the weathered coal are subjected to directional domestication, and the cell quantity of the microorganisms under the high salt concentration and the expression quantity of extracellular active components are increased; compounding the directionally domesticated microbial strains to obtain a compound microbial agent, and performing solid-state fermentation on coal gangue and weathered coal components by using the compound microbial agent to obtain a soil conditioner product. The soil conditioner prepared by the method can effectively improve the soil property of the saline-alkali soil, and ecological utilization of the coal gangue and the weathered coal and soil improvement of the saline-alkali soil are realized.

The invention discloses a heavy metal pollution remediation material combining minerals and bacteria and a preparation and remediation method thereof. The heavy metal pollution remediation material comprises the following components in parts by mass: 50 parts of clay minerals, 30 parts of phosphate minerals, 10 parts of bacteria and the balance of organic fertilizer as a matrix, wherein the clay mineral is attapulgite, the phosphate mineral is apatite, and the bacteria are one of enterobacter. By combining the characteristics of minerals and bacteria, the remediation material has strong adsorption capacity and can effectively remove heavy metal ions in soil. Meanwhile, the enterobacter converts heavy metal ions into insoluble precipitates through a bioremediation mechanism of the enterobacter, such as adsorption, reduction, chelation and the like, so that subsequent treatment is facilitated. The metabolic activity of the enterobacter in the soil can promote the growth and activity of soil microorganisms, increase the content of beneficial elements in the soil, improve the soil structure and improve the soil quality.

The invention discloses a composite heavy metal adsorbent synthesized through mineral conversion and a preparation method of the composite heavy metal adsorbent, and belongs to the technical field of deep processing of natural nonmetallic minerals and preparation of heavy metal adsorption functional materials, and the main preparation method comprises the following steps: S1, crushing and crushing natural clay minerals, and sieving with a 80-mesh sieve to obtain mineral powder; s2, mixing the obtained mineral powder with a calcium compound, and carrying out ball milling; s3, adding a boron compound, and continuing ball milling; s4, adding water into a solid material obtained by ball milling according to a solid-to-liquid ratio of (1: 5)-(1: 20), putting into a microwave hydrothermal reaction kettle, adding an organic auxiliary agent, carrying out gradient heating to 100-200 DEG C, reacting for 30-120 minutes, then naturally cooling to room temperature, separating, drying and crushing; according to the invention, natural clay raw ore is taken as a raw material, and the borate-silicate composite adsorption material is prepared in a preparation mode of combining solid-phase reaction and microwave hydrothermal treatment, so that high-concentration and low-concentration heavy metal ions are efficiently removed.

The invention relates to the technical field of oil and gas reservoirs, and discloses a carbon dioxide dynamic water-rock reaction measuring device and method.According to the method, five groups of rock samples from the same well and with the same well depth are adopted for a parallel control experiment, the five groups of rock samples correspond to five reaction times set by the experiment respectively, and after each reaction is finished, the reaction time is calculated; according to the method, the porosity, permeability, mineral components and clay mineral components of corresponding rock samples are measured, the fluid ion concentration after the reaction is measured and analyzed, the carbon dioxide burying amount is calculated, experiments of other groups are not interfered, the reaction continuity and the reaction system sealing performance can be guaranteed, and the stratum reaction environment can be simulated more truly.

The invention discloses a method for preparing active kaolinite-series clay through synergistic activation and application of the active kaolinite-series clay as an auxiliary cementing material, and belongs to the technical field of auxiliary cementing material production.On the basis of thermal activation, the kaolinite-series clay is subjected to synergistic treatment in combination with mechanochemical activation, the advantages of thermal activation and mechanochemical activation are fully exerted, and the active kaolinite-series clay is prepared. The activity of clay minerals and non-clay minerals in the kaolinite series clay is improved to the maximum extent, low-carbon activation of the kaolinite series clay is achieved, and a technical guarantee is provided for preparation of auxiliary cementing materials (SCMs).

The invention relates to the field of ardealite treatment, in particular to a compound preparation for curing fluorine and phosphorus in ardealite and application thereof.The compound preparation is prepared from, by mass, 20-40 parts of modified clay minerals, 10-15 parts of clay minerals, 1-2 parts of coagulant, 0.1-0.6 part of auxiliaries and 180-200 parts of deionized water. The modified clay minerals are hydroxyl iron modified mixed clay minerals, the mixed clay minerals are obtained by mixing maleic anhydride grafted clay minerals and polyacrylic acid-sodium acrylate grafted clay minerals, and the composite preparation provided by the invention can greatly increase the removal rate of fluorine and phosphorus in phosphogypsum; wherein the modified clay mineral and the clay mineral have a synergistic effect, a three-dimensional structure with large porosity, large specific surface area and large surface active group content can be formed in a system, phosphorus and fluorine in phosphogypsum can be adsorbed to the maximum extent, and the modified clay mineral and the clay mineral have a wide application prospect.

The invention relates to the technical field of soil improvement materials, and provides a soil heavy metal pollution repairing agent based on biomass power plant ash, which mainly comprises surface modified porous biomass power plant ash, polymer modified bentonite, a soil modified repairing agent and clay minerals. The surface modified porous biomass power plant ash is obtained through gamma-aminopropyltriethoxysilane and humic acid modified porous biomass power plant ash clustering, and the polymer modified bentonite is bentonite modified by acrylic acid and sodium carboxymethyl cellulose through a polymerization reaction. The preparation method comprises the steps of pretreatment of biomass power plant ash, liquid nitrogen freezing, freeze drying, porous structure formation, surface modification and the like. The components are mixed, granulated and molded, so that the obtained remediation agent can effectively reduce the bio-availability of heavy metals in soil, reduce the heavy metal absorption of crops and improve the soil environment quality.

The present invention discloses a preparation method of a photothermal super-hydrophobic coating with excellent anti-icing / de-icing performance under a low temperature and high relative humidity environment, first by in situ growth of photothermal Cu-MOF nanoparticles on the surface of low thermal conductivity fibrous clay mineral nanoparticles, constructing a two-level nano- / nano-structured composite photothermal particle, which is then subjected to low surface energy modification and introduced into a low thermal conductivity binder, and a binder is induced to phase separate to form a micron-scale binder / low surface energy nanoparticle aggregate by a non-solvent, and finally a photothermal super-hydrophobic coating with a three-level micro- / nano- / nano-structure is constructed by spraying. The three-level micro- / nano- / nano-structure of the coating simultaneously gives the coating excellent photothermal performance and the Cassie-Baxter state stability of the droplet on the coating surface under a low temperature and high relative humidity environment, so that it has excellent passive anti-icing / frosting and active de-icing / defrosting performance in this environment. The low thermal conductivity of the coating further suppresses the heat exchange between the substrate-water droplets, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the present invention has the advantages of simple preparation method and large-area preparation, laying a solid foundation for the practical application of photothermal superhydrophobic anti-icing coatings.

The invention discloses a construction method and application of a mixed-dimension attapulgite clay-based porous separation membrane, firstly, mixed-dimension attapulgite clay acid etching powder is added into a saponin plant extracting solution to obtain a suspension, then the suspension is mixed with a sodium alginate / glycerol aqueous solution, a Pickering foam template method is adopted to obtain a membrane forming solution, and the membrane forming solution is dried to obtain the mixed-dimension attapulgite clay-based porous separation membrane. And carrying out film casting, calcium crosslinking and carboxylation treatment to obtain the porous separation membrane. On the basis of the rod / sheet mixed dimension structure advantage of clay minerals and the synergistic stabilization effect of plant derivatives, the interfacial film strength, functional group spatial arrangement and network structure are efficiently regulated and controlled, the separation film with a multi-stage communicating pore structure and excellent mechanical performance and separation efficiency is constructed in a green mode, and the separation efficiency is improved by combining film layer stacking and acid pickling enrichment. A high-efficiency uranium separation / enrichment method is developed, and an innovative solution is provided for uranium pollution prevention and control and resource enrichment by a membrane separation technology.

The invention relates to the technical field of hemostatic materials, in particular to a clay mineral-based aerogel hemostatic material and a preparation method thereof. The invention discloses a preparation method of a clay mineral-based aerogel hemostatic material. The preparation method comprises the following steps: S1, uniformly dispersing clay minerals and sodium alginate in deionized water respectively, and stirring to prepare slurry and sol for later use; s2, uniformly mixing the slurry and the sol, preparing a mixed sol, introducing the mixed sol into a mold, dropwise adding a proper amount of a metal salt solution, and standing to obtain a standing product; s3, freeze-drying the standing product to obtain the clay mineral-based aerogel hemostatic material. The composite material disclosed by the invention combines the adsorbability of clay and the biocompatibility of sodium alginate, has excellent biocompatibility and high safety, and shows excellent performance in the aspects of absorbing and concentrating tissue fluid, and the composite aerogel can quickly activate platelets and stimulate blood coagulation factors to efficiently coagulate blood, and has efficient hemostasis capability.

The invention relates to the technical field of ceramic rock plate production, in particular to soft light skin feeling glaze, a soft light skin feeling ceramic rock plate with a digital three-dimensional effect and a preparation method thereof.According to the soft light skin feeling ceramic rock plate with the digital three-dimensional effect, the formula of a blank, the formula of soft light ground glaze and the formula of soft light cover glaze all belong to clay minerals and are good in plasticity, and meanwhile a toughening composition is added into the blank; the strength and toughness of the ceramic rock plate blank can be greatly enhanced, the toughening composition has certain cohesiveness, a bridge effect can be formed among ceramic particles, and the binding force among the particles is enhanced. In the green body drying process, the bonding effect is beneficial to keeping the relative position of particles and reducing the movement and agglomeration of the particles, so that a more uniform and compact microstructure is formed, the toughness of the ceramic rock plate is improved, the stress in the sintering process is effectively eliminated, the sintering qualification rate is improved, cracking is reduced, and the quality of the ceramic rock plate is improved. Wide application prospects are realized.

The invention discloses a method for analyzing diagenesis of clay minerals by combining physical simulation and numerical simulation, which comprises the following steps: selecting clay single minerals, and preparing a formation water solution; respectively filling the clay single mineral and the stratum water solution into a plurality of reaction kettles, and carrying out diagenesis physical simulation; establishing a numerical simulation model with the same physical simulation experiment condition, and outputting mineral and ion data; according to mineral and ion data, fitting a physical simulation experiment result and a numerical simulation result, and determining a mineral corrosion rate; and establishing a geologic model by taking the mineral dissolution rate as a reference, and performing clay single mineral diagenesis simulation within a geological time scale. According to the method, numerical simulation parameters are constrained by physical simulation experiment results, and comparison and verification of numerical simulation and physical simulation results are realized by adjusting mineral corrosion kinetic parameters in real time, so that the numerical simulation experiment results are close to actual conditions.

The present invention relates to the technical field of petroleum drilling. Specifically disclosed are a multi-component copolymer and a preparation method therefor and a use thereof. The multi-component copolymer comprises a structural unit A, a structural unit B, a structural unit C, and a structural unit D, wherein the structural unit A has a structure as represented by formula (1), the structural unit B has a structure as represented by formula (2), and the structural unit C has a structure as represented by formula (3). The multi-component copolymer of the present invention can be used as a well wall stabilizer, in particular as a borehole strengthening type well wall stabilizer, can inhibit the hydration and swelling of stratum clay minerals, effectively plugs rocks with developed fractures and bedding, effectively strengthens a borehole, maintains well wall stability, has a certain filtrate loss reducing effect, and improves the efficiency of oil and gas resource development and utilization and the economic benefits of oilfield companies.

The invention belongs to the technical field of rubber auxiliaries and rubber tracks, and particularly relates to a coupling agent composition for inhibiting rubber appearance flooding and application of the coupling agent composition in the rubber tracks. The coupling agent composition comprises the following components in percentage by weight: 15%-30% of coupling agent, 1%-15% of metal chloride and 70%-85% of clay mineral. Different from a microcapsule technology only aiming at anti-aging agent migration, the coupling agent composition disclosed by the invention can effectively capture various types of color-flooding source substances including carbon black residues, anti-aging agents, antioxidants and the like by starting from common characteristics (containing unsaturated bonds, heteroatoms and aromatic structures) of color-flooding small molecules and through the synergistic effect of the coupling agent and metal ions, so that the color-flooding source substances can be effectively captured. And the method has wide applicability. In addition, a composite system composed of the clay, the coupling agent and the metal chloride can improve the bonding strength of the rubber and a track framework material, and is suitable for being applied to a heavy-load rubber track.

The invention discloses a cationic self-assembly high-temperature-resistant clay stabilizer and a preparation method thereof.The preparation method sequentially comprises the following steps that firstly, N-methylbenzylamine, diethylenetriamine and epichlorohydrin are subjected to a substitution reaction, and polyquaternary ammonium containing quaternary ammonium ions and benzyl is prepared; then carrying out a reaction on the mono6-amino-beta-cyclodextrin and epoxy chloropropane, so as to prepare a beta-cyclodextrin-epoxy chloropropane condensation compound; and finally, blending and assembling the two substances to generate the cation assembled compound with relatively high cation degree and high temperature resistance. Polyquaternary ammonium containing quaternary ammonium ions and benzyl in the cation assembly compound provides quaternary ammonium cations combined with anionic charges on the surface of stratum clay minerals on one hand, and provides benzene rings combined with beta-CD holes of the beta-cyclodextrin-epichlorohydrin condensation compound on the other hand. The prepared clay stabilizer has good high temperature resistance, has a good clay anti-swelling effect under a strong alkaline condition, and can improve the crude oil recovery rate.

The invention relates to the technical field of adsorbents, in particular to a modified mineral-based composite active coke adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively crushing, sieving and drying an active coke raw material and a modified clay mineral, mixing according to a ratio, adding a binder, fully kneading and uniformly mixing, carrying out compression molding, drying, carbonizing and activating to obtain the modified mineral-based composite active coke adsorbent. The modified clay mineral is prepared by dipping a natural clay mineral in a modifier solution, washing, carrying out suction filtration and drying; and the modifier is one or more of acid, transition metal salt, acidic salt or calcium salt. In the preparation process of the active coke material provided by the invention, the modified clay mineral has the effects of improving the yield of an active coke product, enhancing the adsorption performance of the active coke and improving the pore diameter of the active coke; the modified mineral-based composite active coke adsorbent disclosed by the invention has the characteristics of rich pore structure, large adsorption capacity, high efficiency, rich surface functional groups and the like.

The invention relates to the technical field of semi-arid mining area land reclamation and ecological restoration, and discloses a semi-arid mining area reclamation double-surface-soil key layer and a refined construction method thereof.The semi-arid mining area reclamation double-surface-soil key layer comprises a wind-erosion-resistant key layer and a water and fertilizer maintaining key layer which are arranged from top to bottom; the anti-wind-erosion key layer comprises a coarse particle windproof layer and a fine particle cementing layer which are arranged from top to bottom; the water and fertilizer maintenance key layer is prepared from the following raw materials: fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator, an organic water-retaining agent and a biological enhancement matrix material; the raw materials of the coarse particle windproof layer comprise gravel and coarse sand; the raw materials of the fine particle cementation layer comprise fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator and an organic water retention capacity cementing agent. The reclamation double-surface soil key layer for the semi-arid mining area can effectively resist natural erosion, improve the soil structure, improve the water and fertilizer retention capability and promote the recovery of local host plants.

The present invention discloses a method for preparing a hunting-type fruit and vegetable fresh-keeping material, comprising the following steps: (1) dispersing clay minerals in an organic solvent and stirring and mixing at high speed to obtain a clay mineral dispersion; (2) preparing carbon quantum dot-modified titanium dioxide nanosheets; (3) adding carbon quantum dot-modified titanium dioxide nanosheets to the clay mineral dispersion, and adding metal oxides, metal salts and dispersants and stirring and mixing at high speed, calcining, adding organic antibacterial agents, ball milling, and drying to obtain a dispersion. Also disclosed are a fruit and vegetable fresh-keeping material prepared by the above method, a hunting-type fruit and vegetable dormant fresh-keeping film prepared by the fruit and vegetable fresh-keeping material, and the use of the above fruit and vegetable fresh-keeping material and fresh-keeping film in fruit and vegetable preservation.

Disclosed in the present application are a method for determining the fault sealing capacity of CO2 geological storage, and a related apparatus. The method specifically comprises: determining whether the lithology of a caprock corresponding to a reservoir consisting of CO2 satisfies preset conditions, the preset conditions comprising that the lithology is shale, and the proportion of clay minerals satisfies a preset range; when the lithology of the caprock does not satisfy the preset conditions, calculating a displacement pressure difference between the reservoir and a fault formed between the caprock and the reservoir; and when the displacement pressure difference is not greater than zero, determining a caprock thickness, a reservoir thickness and a fault displacement on the basis of a fault profile diagram; and, on the basis of a numerical value sorting relationship of the caprock thickness, the reservoir thickness and the fault displacement, determining the fault sealing capacity of CO2 geological storage, the fault sealing capacity comprising: a fault being completely sealed, a fault being partially sealed and a fault being unsealed. Therefore, the present application finally determines the fault sealing capacity of the CO2 geological storage.

The invention belongs to the field of harmful algae bloom prevention and control, and particularly relates to a preparation method of environment-friendly organic quaternary ammonium salt modified clay capable of efficiently removing algae. The preparation method comprises the following steps: carrying out hydroxyl activation treatment on the surface of a raw material clay mineral, adding a silane-containing organic quaternary ammonium salt modifier (Si-QAC) after treatment, and regulating valence bond binding reaction between silane-containing groups in modifier molecules and active sites on the surface of the clay to obtain the organic quaternary ammonium salt modified clay. The preparation method has the advantages that accurate regulation and control and strong bonding of grafting modification of organic quaternary ammonium salt molecules on the surface of clay are realized by utilizing the valence bond action of silyl groups in the organic silicon quaternary ammonium salt molecules and active sites on the surface of the clay, and an efficient and stable algae removal composite material is obtained; a novel method is provided for precisely synthesizing the organic quaternary ammonium salt modified clay with good ecological safety.