375 results about "Organic component" patented technology

The invention discloses a method for preparing a supercapacitor electrode through high-temperature alkali activation. The method comprises the steps of preparing porous carbon, preparing an electrode plate, preparing a supercapacitor, and carrying out electrochemical performance testing and material characterization testing. When the carbon precursor of the supercapacitor electrode material is prepared, organic components in walnut shells can be refined and removed and biochar is left by utilizing the effect of removing organic matters in biomass at high temperature of a tubular furnace; the potassium hydroxide with different concentrations is used as the activating agent to activate the biochar, the porosity and the internal structure richness of the porous carbon can be greatly improved, and compared with traditional solid alkali activation, the aqueous solution alkali activation has the advantages that the reliability and the possibility are improved, and the contact area of the activating agent and substances is increased. The electrode material prepared by the method has the advantages of low manufacturing cost, small environmental pollution and excellent service life, and is an ideal electrode material.

The invention discloses a preparation method and application of monolithic BiVO4 photocatalytic foamed ceramic. The method comprises the following steps: 1) preparing composite slurry containing BiVO4 powder, an organic additive and a reinforced phase; (2) uniformly attaching the composite slurry to the organic foam skeleton by adopting an impregnation method; 3) performing drying and heat treatment to remove organic components; and 4) performing high-temperature sintering to form the three-dimensional communicated porous structure. Through the structure-function integrated design, the problems that a traditional powder catalyst is difficult to recover, the activity of an immobilized catalyst is low and a supported catalyst is easy to fall off are solved. The obtained product is high in porosity, the compressive strength is larger than or equal to 0.1 MPa, the specific surface area is larger than or equal to 0.1 m < 2 > / g, visible light can be efficiently utilized for degrading emerging organic pollutants in water, and the degradation rate reaches 20-99%. The material has no nano-particle leakage risk, has excellent mechanical strength, chemical stability and engineering applicability, and provides a feasible scheme for large-scale application of a photocatalytic water treatment technology.

The invention discloses a high-valued graded utilization method of marine shells, and belongs to the technical field of comprehensive utilization of biological resources and preparation of functional materials. The method comprises the following steps: cleaning, air-drying and superfine grinding marine shell wastes such as abalone shells, and extracting water-soluble organic components in the marine shell wastes by adopting mild water extraction, so that the obtained extract is rich in protein, polysaccharide or small molecule peptide, has good biological activity, and can be used for preparing functional materials such as biomimetic mineralization, tissue repair and the like; extracted shell powder residues are subjected to heat treatment or chemical activation treatment and then compounded with natural polymer materials such as chitosan and sodium alginate, and the composite adsorbent which is loose in structure and large in specific surface area is prepared and can be used for removing dye, heavy metal, antibiotics and other water pollutants. According to the invention, separate utilization of organic components and inorganic framework materials in the marine shells is realized, and the method has the characteristics of environmental protection, efficient resource conversion and multifunctional application, and has a good industrial popularization prospect.

The invention relates to an electrochemical cleaning method for removing organic matters on the surface of a silicon carbide wafer, which comprises the following steps of: immersing the silicon carbide wafer with the polluted surface into electrolyte containing bivalent and / or trivalent ferric salt, applying voltage or current between a cathode material and an anode material, and carrying out electrochemical reaction to remove the organic matters on the surface of the silicon carbide wafer. The surface of the silicon carbide wafer is subjected to organic matter removal. According to the method, an electrochemical oxidation method technology is adopted, the strong oxidation effect of hydroxyl free radicals is utilized, organic residues on the surface of the silicon carbide wafer are oxidized and decomposed into short-chain organic matter, water, carbon dioxide and other products, and the purpose of removing the organic residues is achieved. The method provided by the invention is simple and efficient, can quickly remove organic pollutant residues on the surface of the silicon carbide wafer, does not use high-concentration chemicals and organic component cleaning agents which are difficult to degrade in the cleaning process, is safe and reliable to operate, reduces the consumption of the chemicals, avoids secondary pollution, and is more environment-friendly.

The invention discloses an in-situ biomineralizable mineral-PHA water-based seed coating based on microphase separation and soil water potential response and a preparation method and application thereof, and belongs to the technical field of green coatings, the in-situ biomineralizable mineral-PHA water-based seed coating comprises a structural mineral skeleton, a PHA and resin composite matrix and a pore-forming disintegrating agent. According to the invention, a resin enrichment layer and island microphase structure is innovatively constructed, and the contradiction between poor wear resistance and difficult disintegration of a bio-based material is effectively solved. Compared with the prior art, the wear-resistant and dust-reducing coating has the advantages that the wear-resistant and dust-reducing performance far better than that of the traditional PHA coating is realized by utilizing an interface enhancement effect under the condition of equal or even lower polymer dosage; meanwhile, the coating is endowed with a sensitive soil water potential response'switch ', so that dry-state tough seed protection and wet-state rapid disintegration are ensured, and germination is not hindered. Organic components of the composition can be biodegraded in aerobic soil, inorganic components are natural minerals, the environmental compatibility is good, the composition has the advantages of high performance and low cost, and an excellent seed treatment scheme is provided for green agriculture.

The invention provides a soil remediation modifier, a soil remediation method and a soil maintenance method, and belongs to the technical field of soil remediation. The soil conditioner is prepared from the following raw materials in parts by weight: 40-50 parts of modified sludge, 10-15 parts of humic acid, 5-10 parts of a bioactive component, 10-15 parts of an inorganic component and 10-15 parts of an organic component. The soil remediation agent prepared by the invention not only can increase the total porosity of soil, improve soil water stability granules and soil structure, but also can improve soil fertility, improve soil pH value and passivate heavy metal ions, so that the prepared remediated soil can adapt to plant growth requirements, and meanwhile, the sludge and the traditional Chinese medicine residues are subjected to resource utilization, waste is turned into wealth, and the cost is reduced. Wide application prospects are realized.

The invention discloses a compatible molybdenum-aluminum mixed acid etching solution which comprises the following components in percentage by mass: 4%-7% of nitric acid, 55%-65% of phosphoric acid, 17%-28% of acetic acid, 0.5%-3% of an oxidizing additive, 0.05%-5% of a metal corrosion inhibitor and 10%-20% of deionized water, and the oxidizing additive is ceric nitrate and at least one selected from sodium nitrate, potassium nitrate and ammonium nitrate; the etching liquid does not contain other organic components except for organic carboxylic acid and organic carboxylate. According to the compatible molybdenum-aluminum mixed acid etching solution, on the basis that ceric nitrate is introduced, the content of nitric acid is reduced, the nitrate ion concentration is increased by adding nitrate, the overall oxidation performance of an etching solution system is improved, the etching rate ratio of different metals is adjusted, CD-Bias is reduced, the etching dip angles of a molybdenum single layer and a molybdenum-aluminum laminated layer are controlled to be kept at 20-50 degrees, and the problem of aluminum thorns is solved. The invention further discloses a molybdenum-aluminum etching method based on the compatible molybdenum-aluminum mixed acid etching solution.

The invention discloses a full bio-based PHA (polyhydroxyalkanoate) liquid bioplastic emulsion and a preparation method thereof. The emulsion takes polyhydroxyalkanoate (PHA) as a matrix, alkyl polyglycoside, fermented glycolipid and a bio-based nonionic surfactant are compounded with pullulan, alginate or micro-nano cellulose to serve as a stable system, and plasticizers such as acetyl tributyl citrate and citric acid, phytic acid or tannic acid are added to serve as compacting agents. The solid content of the emulsion is 35-58%, the volume average particle size D50 is 0.12-0.90 [mu] m, the absolute value of Zeta potential is not less than 30 mV, and the content of volatile organic compounds (VOC) is not higher than 50 g / L; fluorine-containing organic matters are not artificially added, and the total organic fluorine is less than or equal to 100ppm. The overall bio-based carbon content of all organic components in the formula is not lower than 95% according to mass weighting calculation. The invention also provides application of the emulsion in the fields of paper barrier coatings, heat-sealing adhesives and non-woven fabric finishing.

This thin film includes chalcogenide perovskite particles and an organic component that modifies the particles. A mean square roughness of the thin film surface is less than 1000 nm.

The present disclosure is directed to a method for forming calcined pozzolan that includes: performing a gravity separation on coal refuse to separate an organic component from an inorganic component including crystalline shale; and converting the crystalline shale to a calcined pozzolan. The present disclosure also directed to a calcined pozzolan, concrete, a method of producing concrete, and a method for cleaning a landfill site.

The invention discloses a garden waste resource utilization system and method, and the system comprises an intelligent recognition module which is used for collecting the hyperspectral image data of garden waste on a conveying belt, and recognizing and distinguishing organic components and non-organic impurities in real time; the intelligent sorting and removing module is in communication connection with the intelligent identification module and is used for removing non-organic impurities from the conveying belt; the crushing and homogenizing module is used for crushing the sorted pure organic materials and adding adjusting materials to optimize the carbon nitrogen ratio and the water content of the materials; the intelligent aerobic fermentation module is used for monitoring parameters of fermentation materials; the intelligent control system is connected with the multi-parameter sensor group and is used for automatically adjusting the ventilation quantity, the turning frequency and the water supplementing quantity in real time according to the monitored parameters; and the fertilizer forming module is used for granulating and forming the decomposed fermentation material into the granular organic fertilizer. According to the invention, full-process automatic, recycling and harmless treatment from the garden waste to the high-value organic fertilizer is realized.

The invention belongs to the field of chemical industry purification processes, and particularly relates to a method for purifying a chemical industry byproduct hydrogen sulfide gas. The method comprises the following steps: pretreating hydrogen sulfide gas at 0-60 DEG C under unlimited pressure, and separating small liquid drops in the hydrogen sulfide gas through a mist capturing or gas-liquid separator; then adopting a polar adsorption section, a medium polar adsorption section and a non-polar adsorption section, and successively separating organic matter components in the hydrogen sulfide gas under the filtering conditions that the temperature is-20 to 45 DEG C, the pressure is 0.01 to 5.0 MPa and the flow rate is 1 to 1,000 BV / h, so as to obtain the filtered gas, namely a final product. According to the process, small liquid drops in the hydrogen sulfide gas are separated, and organic impurities in the hydrogen sulfide gas are effectively separated after adsorption of the one-stage or multi-stage macroporous adsorption resin, so that the quality of hydrogen sulfide is improved, and the quality of subsequent products such as sulfur or sulfuric acid for industrial reproduction of hydrogen sulfide is also improved.

The invention relates to the technical field of fertilizers, in particular to an alginic acid organic water-soluble fertilizer capable of quickly releasing nutrients and a preparation method of the alginic acid organic water-soluble fertilizer. The organic water-soluble fertilizer is prepared from the following preparation raw materials: 30 to 35 parts of sodium alginate, 12 to 15 parts of a seaweed extract composition, 5 to 8 parts of monocalcium phosphate, 5 to 8 parts of monopotassium phosphate, 12 to 15 parts of urea, 0.5 to 0.8 part of a chelating agent, 40 to 45 parts of an organic fertilizer raw material, 1.5 to 2 parts of a microbial strain, 12 to 16 parts of ammonium humate, 4 to 6 parts of a cosolvent and 1.4 to 1.7 parts of xanthan gum. By optimizing the ratio of the raw materials, the absorption and utilization rate of plants to the water-soluble fertilizer is remarkably improved; nutritional ingredients can be quickly released, and plants can be promoted to absorb water-soluble fertilizer; through the synergistic effect of microorganisms and organic components, the content of nutrient substances in soil is increased, plants are helped to better absorb mineral substances and trace elements, the utilization efficiency of the fertilizer is improved, healthy growth of the plants is promoted, and the yield is increased.

The invention discloses a preparation method of a composite biological nitrogen and phosphorus removal filter material, and relates to the technical field of sewage treatment. The preparation method of the composite biological nitrogen and phosphorus removal filter material comprises the following steps: loading sulfur and pyrite with oyster shells to prepare an integrated composite biological carrier with a foaming structure; sulfur loaded in the oyster shells can provide electrons for the denitrification nitrogen removal process; pyrite in the structure is rich in iron element, and can also participate in auxiliary phosphorus removal while providing nitrogen removal electrons; meanwhile, the foamed porous structure of the novel filter material is also beneficial to improving the specific surface area of a carrier, and bacteria can be efficiently and rapidly enriched; according to the present invention, the oyster shell is adopted as the carrier of the filler, the organic matter component is adopted as the slow release carbon source to provide a part of electrons so as to achieve heterotrophic denitrification, and the calcium carbonate component in the oyster shell can provide alkalinity so as to make up the insufficient alkalinity problem during the autotrophic denitrification process;

The invention relates to a reverse osmosis membrane pollution control method based on green biological scale inhibition, which is especially suitable for reverse osmosis membrane pollution treatment in an industrial wastewater zero discharge system. The method comprises the following steps: regulating and controlling the composition of organic components of inlet water through a sand filtration pretreatment unit, and directly interfering the nucleation and crystallization processes of inorganic scaling on a membrane surface by utilizing naturally enriched microbial communities and extracellular polymeric substances thereof in a sand filtration process without adding a fungicide or a chemical scale inhibitor, so as to form a loose and reversible pollution layer structure. The method effectively reduces the scaling rate of inorganic salts such as calcium carbonate and the like, inhibits membrane surface biological pollution, delays compaction of a pollution layer, improves the membrane flux retention rate, prolongs the membrane operation cycle and reduces the cleaning frequency. Compared with an existing traditional physical or chemical pretreatment method, the natural scale inhibition effect of an ecological system in the sand filtration unit is fully utilized, and the method has the remarkable advantages of being low in operation cost, environmentally friendly, high in adaptability and the like.

The invention discloses a multi-metal-component high-entropy metal organic framework material and a preparation method thereof, and belongs to the technical field of new material technology development and environmental governance, and the multi-metal-component high-entropy metal organic framework material is mainly used as a photocatalysis and photo-Fenton material for degrading azo dye pollutants. The high-entropy metal organic framework is prepared by taking various transition metal ions as inorganic components in the framework and polycarboxylic acid functional group ligands as organic components of a framework material, and heating the inorganic components and the organic components in a mixed solvent under the protection of nitrogen to coordinate and self-assemble the inorganic components and the organic components. The selected metal ions and organic ligands are low in cost, the preparation condition is simple, the yield is high, and the obtained multi-metal-component high-entropy metal organic framework material has good photocatalysis and photo-Fenton degradation performance on monoazo dyes under the visible light wave band; the problems of wide band gap, low response to visible light, poor photon-generated carrier separation capability and the like of conventional monometal component MOFs are solved, and a new scheme is provided for an environment restoration material.

The invention relates to a process for producing polyethylene glycol by coupling a reactive distillation separation ternary water-containing azeotropic system. According to the process, excessive ethylene oxide is introduced into a ternary water-containing azeotropic system, water in the system is completely converted into polyethylene glycol to be extracted as a by-product, and the excessive ethylene oxide and residual organic components of the system are separated through a common rectification technology. According to the invention, chemical reaction and rectification separation are coupled to be carried out in one tower, reaction and separation are realized at the same time, and heat released by the reaction can reduce the thermal load of the reboiler.

The invention discloses a sample pretreatment method for measuring organic components in titanium tetrachloride and a measurement and analysis method, and belongs to the technical field of detection and analysis of the organic components in inorganic materials. The sample pretreatment method and the measurement analysis method comprise the following steps: carrying out liquid-liquid extraction on a titanium tetrachloride sample to be detected by adopting a combined reagent, fully reacting, standing for layering to obtain a clear, transparent, non-emulsified and clear-interface two-phase system, separating and collecting a subnatant liquid phase to obtain a solution to be detected for detecting and analyzing the organic components in titanium tetrachloride; and sending the solution to be detected to an organic analysis instrument for organic component detection and analysis by adopting a direct sample injection mode. The method provided by the invention can effectively solve the influence of deposition blockage, matrix effect, highly corrosive volatile gas of HCl and the like caused by high-concentration inorganic components such as Ti < 4 + >, Cl <->, H < + > and the like in TiCl4 on a detection instrument and a determination result.

The invention relates to the technical field of adhesives, and discloses an organic-inorganic hybrid adhesive, a preparation method and application of the organic-inorganic hybrid adhesive in aerogel heat insulation felts.The preparation method specifically comprises the steps that a mono-epoxy hepta (methoxyphenyl phthalazinone) POSS type connecting agent is synthesized and used for conducting modification treatment on silicon dioxide with the surface rich in hydroxyl, and then the modified silicon dioxide is obtained; the preparation method comprises the following steps: preparing nano silicon dioxide particles containing a methoxyphenyl phthalazinone POSS (Polyhedral Oligomeric Silsesquioxane) functional group; the preparation method comprises the following steps: compounding nano silicon dioxide particles containing methoxyphenyl phthalazinone POSS-based functional groups with an organic component phenolic resin on the basis of a pi-pi accumulation effect between benzene rings, so as to prepare the organic-inorganic hybrid adhesive; the glass fiber felt with excellent high temperature resistance is prepared by taking the organic-inorganic hybrid adhesive as an adhesive of chopped glass fibers, and can be used as a reinforcing material in the aerogel heat insulation felt, so that the prepared aerogel heat insulation felt shows excellent heat insulation performance.

The invention relates to a coal rock reservoir productivity adjusting auxiliary agent and a preparation method thereof, the coal rock reservoir productivity adjusting auxiliary agent integrates multifunctional components such as an intelligent response type surfactant, a nanoparticle composite material, a bio-based solvent, intelligent microspheres and microbial flora, and the auxiliary agent can continuously reduce interfacial tension, adjust wettability and stabilize a pore structure in a high-temperature and high-salt environment; the nano skeleton support can effectively prevent pore collapse and provide catalytic desorption sites, the bio-based solvent solubilizes coal rock organic components, the intelligent microspheres realize delayed controlled release of the corrosion inhibitor, the scale inhibitor and microbial nutrient components through heat, pressure or pH stimulation, microbial flora continuously breed in a reservoir, a local acidification or gas production effect is generated, and the coal rock organic components in the reservoir can be degraded. The method disclosed by the invention is green, environment-friendly, economical and feasible, and can be widely applied to efficient development of resources such as unconventional coal bed gas and the like.

The invention discloses a normal-temperature bio-based asphalt cold patch material and a preparation method thereof. The cold patch material comprises 96.5-98wt% of an asphalt pavement recycled material and 2-3.5 wt% of a bio-based asphalt cold patch liquid, and the cold patch liquid comprises 60-70wt% of matrix asphalt, 10-20wt% of a bio-based diluent and 20-30wt% of a bio-based regenerant. The preparation method comprises the following steps: preparing epoxidized soybean oil methyl ester and hydrogenated methyl ricinoleate; the preparation method comprises the following steps: uniformly mixing vegetable oil and a derivative component thereof, fatty acid and an ester component thereof, a natural small-molecular organic matter component and carnosic acid at normal temperature to prepare a bio-based diluent; the method comprises the following steps: heating matrix asphalt to a flowing state, adding a bio-based regenerant, cooling, and adding a bio-based diluent to prepare a cold supplementing liquid; and adding the cold patch liquid into the asphalt pavement recycled material, and mixing to obtain the cold patch material. The bio-based asphalt cold patch material has high initial strength, the repaired pavement is high in stability, and the repair rate of diseases and the probability of repeated occurrence of the diseases are greatly reduced.

1. The name of the design product: liquid chromatograph mass spectrometer (2050 triple quadrupole). 2. The use of the design product: the design is used for quantitative and semi-quantitative analysis of organic components. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a method for separating oil-rich coal into organic matter components with different condensation degrees based on hierarchical density, and relates to the technical field of coal processing layering. Under the action of external field driving force, non-overlapping density hierarchical components with different organic matter condensation degrees and heavy ash contents are quickly separated; the density of the high ash density component is greater than or equal to 1.6 g / cm; the density of the heavy organic component is greater than or equal to 1.4 g / cm and less than 1.6 g / cm; the density of the medium-light organic component is greater than or equal to 1.3 g / cm and less than 1.4 g / cm; the density of the light organic component is greater than or equal to 1.2 g / cm and less than 1.3 g / cm; the density of the light organic component is less than 1.2 g / cm < 2 >. According to the method, based on the organic structural characteristics of the oil-rich coal, accurate non-overlapping cutting of components with different organic condensation degrees of the oil-rich coal is realized by adopting physical external field force, so that the accuracy and repeatability of a layering result are ensured; and the oil-rich coal is efficiently and cleanly converted into high-added-value fine chemicals and high-end carbon materials.

The invention relates to aziridinyl-functional organic compounds comprising a group Z of Formula (I1), wherein n is an integer ranging from and including 1 up to and including (100), and R' is selected from the group consisting of hydrogen, methyl and C2-C4 saturated aliphatic hydrocarbyl. The invention further relates to particles, composition, cured forms of the aziridinyl-functional organic component, the particles and the composition. The invention further relates to an article.

The invention belongs to the technical field of metallurgical pellet adhesives, and particularly relates to a fine iron powder cold-pressed pellet adhesive and a preparation method thereof. The fine iron powder cold-pressed pellet adhesive comprises the following components in parts by mass: 4-12 parts of an inorganic component, 1-5 parts of an organic component and 0.1-1 part of a dispersing agent, wherein the inorganic component is prepared from the following raw materials in parts by mass: 1 to 15 parts of calcium bentonite, 1 to 20 parts of aluminum oxide, 1 to 10 parts of P2O5, 1 to 15 parts of sulphoaluminate cement, 1 to 10 parts of borax and 1 to 8 parts of fly ash; the organic component is prepared from the following raw materials in parts by mass: 1 to 6 parts of polyvinyl alcohol, 5 to 15 parts of water-based phenolic resin and 1 to 10 parts of modified hydroxy propyl cellulose. According to the adhesive disclosed by the invention, the wet strength, the cold strength and the hot strength of the cold-pressed pellets are remarkably improved.

The invention provides a diketopyrrolopyrrole / cadmium quantum dot composite material as well as a preparation method and application thereof. The composite material comprises a composite material system formed by compounding diketopyrrolopyrrole derivative molecules and cadmium quantum dots. According to the invention, the rate and direction of fluorescence resonance energy transfer (FRET) between organic components and inorganic components in the composite material are simply and efficiently regulated and controlled by controlling the size of the quantum dots. The result of the embodiment shows that the composite material with the FRET rate of about 10 < 10 >-10 < 11 > s <-1 > can be obtained by adopting the method disclosed by the invention, and the energy transfer direction of FRET can be accurately regulated and controlled, so that energy transfer from ligand molecules to quantum dots or from quantum dots to ligand molecules is realized. The method is simple and convenient to operate and implement, and an inorganic-organic composite material system with broad-spectrum response can be constructed so as to realize efficient conversion and utilization of solar energy. In addition, the invention also provides a new thought for research and development in the fields of biological imaging, photoelectric devices and the like adopting a quantum dot-dye molecule composite material system.

The invention discloses a high-modulus inorganic-organic hybrid phase change protection layer for a lithium metal negative electrode. The composite material is composed of a lithium-loving inorganic component and a high-modulus organic component, and an inorganic lithium-loving phase is in star-like distribution in an organic polymer matrix. The inorganic component is composed of a lithium-loving inorganic substance (preferably lithium alloy) for rapid lithium ion transmission and a lithium halide (preferably fluoride) with high electron insulation property in a composite structure, and the binding force and the mechanical strength are enhanced through in-situ interface chemical reaction with lithium metal; the organic component is composed of a thermal-response high-elasticity-modulus phase-change high-molecular polymer (preferably a thermal polymerization organic matter), the polymerization degree is increased along with temperature rise, and good flexibility and electrolyte wettability are provided for the protective layer through an in-situ polymerization phase-change reaction. The protective layer is mainly used for the negative electrode of the lithium metal battery, effectively regulates and controls the deposition and stripping uniformity of lithium ions on the surface of lithium metal, remarkably inhibits the growth of lithium metal dendrites, improves the cycling stability and coulombic efficiency of the battery, and enhances the safety of the battery.

The invention belongs to the field of conductive silver paste, and particularly relates to low-temperature conductive silver paste which comprises modified silver powder and an organic carrier. The modified silver powder is prepared by modifying silver powder through a composite modification solution; the composite modified solution comprises imidazole polyionic liquid and low-boiling-point fatty amine with the boiling point being below 180 DEG C; the organic carrier comprises fatty amine and alcohol. The invention also comprises a preparation method and application of the low-temperature conductive silver paste. According to the conductive silver paste, no organic resin or curing agent is added, the printing performance is good, all paste components can be removed at the low temperature of 150 DEG C or below, the influence of non-conductive organic components on the performance of the silver powder can be avoided, and the electrical performance of the silver powder can be brought into full play.

The application discloses a preparation of isosorbide catalyst and its preparation method and application. The catalyst is an organic / inorganic hybrid material, wherein the organic component comprises a functional group containing two or more N atoms and a hydrophobic group without nitrogen, and the inorganic component is a mesoporous silica material. The catalyst provided by the application is applied to the reaction of sorbitol and dimethyl carbonate to prepare isosorbide, and has high catalytic performance.

This invention relates to the field of separation and purification technology, and discloses a method and system for preparing ultra-clean, high-purity isopropanol. The method includes: isopropanol feedstock undergoing a first distillation and a first adsorption process; the first distillation removes light organic components and water, and the first adsorption removes organic impurities including water, alcohols, ethers, and ketones; the first adsorption is performed before or after the first distillation; followed by a second distillation and a second adsorption process; the second distillation removes heavy organic components and most of the metal cations and anions, and the second adsorption further removes metal cations and anions; the second adsorption is performed before or after the second distillation; followed by a third distillation to further remove water, alcohols, ethers, ketones, organic impurities, metal cations, and anions; and finally, filtration to obtain ultra-clean, high-purity isopropanol. This method can obtain ultra-clean, high-purity isopropanol products with low water content and low levels of alcohol, ketone, and ether impurities.