105results about How to "Rich pore size" patented technology

A preparation method of a heteroatom doped graphene hierarchical pore carbon material comprises the following steps: preparing graphene micro-sheet dispersing liquid by using graphene, then carrying out pore-forming etching on graphene micro-sheets in the graphene micro-sheet dispersing liquid, and preparing porous graphene micro-sheets; mixing the porous graphene micro-sheets with a fatty acid metal compound coating agent and a dopant to obtain oil-phase viscous graphene-based precursor; carrying out programmed heat treatment; carrying out acid pickling, water washing and solid-liquid separation on a product after heat treatment, and drying solid to obtain the final product. The preparation method has the advantages of low cost, simple process, low energy consumption, wide raw material source, and capability of large-scale production.

The invention provides a sasanqua saponin concrete air entraining agent and a preparation method thereof. The air entraining agent is characterized by containing sasanqua saponin therein. The preparation method is characterized by extracting sasanqua as a raw material at normal temperature by hydrophilic solvent water solution, and filtering; removing large-molecule impurities from the filtrate by membrane separation under pressure, removing small-molecule impurities by membrane separation, concentrating to be concentrate with Baume degree of not lower than 10Be (60 DEG C), and spray-drying to form solid formulation; or adding a modifying agent to prepare the air entraining agent in liquid formulation. The idea is novel, the raw materials are abundant, the production efficiency is high, the energy consumption in the production is low, the production cost is low, the preparation method is simple in process, green and environment-friendly and is convenient to implement; when the air entraining agent is used in concrete engineering, the dosage of the air entraining agent is low, the air production rate is high, the aperture of the entrained air bubbles is small and the distance among the entrained air bubbles is small, and the air holes of the concrete are more even, more compact and non-communicated, therefore, the sasanqua saponin concrete air entraining agent is valuable for popularizing.

The invention discloses a surface acoustic wave filter with high power endurance, which comprises a plurality of surface acoustic wave resonators, wherein each of the surface acoustic wave resonators comprises an interdigital transducer and a reflecting grating; at least part of surface acoustic wave resonators are high-resistance surface acoustic wave resonators; two interdigital transducers are arranged in parallel for the high-resistance surface acoustic wave resonators; two reflecting gratings are shared by two interdigital transducers; an output bus bar of a first interdigital transducer is electrically connected with an input bus bar of a second interdigital transducer; the input bus bar of the first interdigital transducer and the output bus bar of the second interdigital transducer are located at the same end; and the two reflecting gratings are located outside the two interdigital transducers. Under same resistance, the high-resistance surface acoustic wave resonators have more finger pairs or shorter pore diameters, the current on each transducer finger is reduced, and the power endurance of the surface acoustic wave filter is greatly increased under the condition of unchanging the electric property of the surface acoustic wave filter.

The invention discloses a preparation method for a novel lithium vanadium phosphate/bamboo charcoal composite cathode material. The preparation method comprises the following steps of: uniformly mixing vanadium pentoxide, lithium hydroxide or lithium fluoride or lithium carbonate or lithium acetate, ammonium dihydrogen phosphate or phosphoric acid, salicylic acid or citric acid or ascorbic acid or tartaric acid or sucrose, and bamboo charcoal in proportion; evaporating water in a 50-80 DEG C water bath to form a sol; drying the sol in a vacuum drying oven for 8 hours at 120 DEG C to obtain a lithium vanadium phosphate precursor; cooling the lithium vanadium phosphate precursor to room temperature, grinding the precursor and putting the ground precursor into a die to prepare a cake under a certain pressure; putting the cake into a porcelain boat, and covering conductive carbon black (SP) powder on the cake; heating the cake in a microwave oven for a certain period of time; cooling the cake to room temperature; and taking the cake out, and grinding the cake to obtain a bamboo charcoal coated lithium vanadium phosphate/bamboo charcoal composite material sample, thus forming a bamboo charcoal connected conductive network. When used as a cathode material of a lithium ion power battery, the novel lithium vanadium phosphate/bamboo charcoal composite cathode material has the advantages of high capacity and magnification, long service life, low price and environmental friendliness.

The present invention belongs to the field of slow-release fertilizers, and specifically discloses a melon high-efficiency slow-release fertilizer with degerming insecticidal effects, the melon high-efficiency slow-release fertilizer with degerming insecticidal effects is characterized by comprising the following components in parts by weight: garlic polysaccharide sulfide derivative, attapulgite, polyvinyl alcohol, a crosslinking agent, polyglutamate hydrogel, mesoporous silica nanoparticles, salicylic acid, toosendanin, pyrethrum, tea polyphenols, composite microbial agents, sodium selenite, compound sodium nitrophenolate, viscous konjac flour, residue of furfural, brown sugar residue, and amino acids and the like. The garlic polysaccharide sulfide derivative and the attapulgite are used as basic coating materials, the micron size composite hydrogel prepared from the polyglutamate hydrogel and different sizes of mesoporous silica nanoparticle matters are added into the coating materials, the pore size of the coating materials are enriched, the dynamic slow-release performance and nutrient use efficiency of the fertilizer are improved, the fertilizer efficiency regulation property is ensured, the melon high-efficiency slow-release fertilizer promotes the melon to absorb and utilize different nutrients, and promotes the efficient cultivation.

The invention discloses a preparation method of a biochar-based composite material, and the preparation method comprises the following steps: firstly mixing, stirring and lyophilizing self-made orangepeel powder and a urea solution to prepare pretreated orange peel powder; mixing the pretreated orange peel powder and rectorite powder to put into an inert gas for calcination treatment, and performing ball-milling and sieving in a nitrogen-containing atmosphere, pickling, washing, filtering and drying to obtain the biochar-based composite material. The biochar-based composite material has goodstability, large adsorption capacity, strong adsorption capacity, simple preparation method and low preparation cost.

The invention discloses a method for preparing a magnetic halloysite molecularly imprinted polymer with specific adsorption to 2,4-dichlorophenoxyacetic acid. The preparation method comprises the following steps: preparing magnetic halloysite nano-tubes by using corroded halloysite nano-tubes by a coprecipitation method; reacting the magnetic halloysite nano-tubes and methacrylate in methylbenzene to obtain magnetic halloysite nano-tubes with double-bond-modified surfaces; after polymerizing the magnetic halloysite nano-tubes with double-bond-modified surfaces, the polymerized monomers and a crosslinker by taking the 2,4-dichlorophenoxyacetic acid as a template, then removing the 2,4-dichlorophenoxyacetic acid to obtain the magnetic halloysite molecularly imprinted polymer with specific adsorption to the 2,4-dichlorophenoxyacetic acid. The raw materials used in the preparation method are low in cost; the preparation method is easy to operate and easy to implement; the prepared magnetic halloysite molecularly imprinted polymer is stable in structure, has specific adsorption to the 2,4-dichlorophenoxyacetic acid, and can effectively separate and remove the 2,4-dichlorophenoxyacetic acid from a complex system.

The invention discloses a lignin-based grafted modified porous adsorbing material prepared through an inverse suspension polymerization technology and a preparation method thereof. The lignin-based grafted modified porous adsorbing material is prepared by taking sodium lignin sulfonate as a host material, acrylamide and acrylic acid as grafted monomers, potassium persulfate as an initiating agent, formaldehyde used as a cross-linking agent, tween 80 used as a dispersing agent and hydrochloric acid as a catalyst. The lignin-based grafted modified porous adsorbing material disclosed by the invention can be used for increasing the molecular weight and absorption property of lignin by introducing a graft copolymerization short chain on a lignin molecular chain, is enhanced in structural regularity to a certain degree, has the advantages of porous structure, no toxicity of production and solvent recycling and is an environment-friendly adsorbing material.

The invention provides a composite ceramic membrane, a preparation method and application thereof. The composite ceramic membrane comprises a ceramic support layer, a ceramic transition layer and a separation layer. The ceramic transition layer is laminated on the surface of the ceramic support layer, and the separation layer is laminated on a surface of the ceramic transition layer opposite to abonding surface of the ceramic transition layer and ceramic support layer. Through the synergistic effect of the three membrane layers, the composite ceramic membrane has excellent mechanical properties, contains abundant microporous channels with adjustable and uniform pore size, effectively improves the filtration and separation effect, and can ensure the composite ceramic membrane smooth poresin the filtration and separation process, delays the attenuation of the composite ceramic membrane, and prolongs the service life of the composite ceramic membrane. The preparation method of the composite ceramic membrane provided by the invention has the characteristics of easily controllable technological conditions and mild conditions, can effectively guarantee the structure and performance stability of the prepared composite ceramic membrane, also effectively improves the preparation efficiency, and lowers the production cost.

The invention discloses wood particle active carbon for an automobile carbon tank and a preparation method thereof, and belongs to the fields of active carbon for the automobile carbon tank and the preparation method of the active carbon. The weight ratio of major raw material ingredient of wood active carbon powder to organic sodium-based bentonites to water is 1:(0.2 to 0.25):(0.8 to 1.0); the three kinds of raw materials are uniformly stirred and are then pelleted; after pelleted particles are dried, physical activation is performed to obtain the wood particle active carbon; the wood active carbon powder is formed by mixing aged wood chips and thermal-process food stage phosphoric acid with the concentration being 85 percent according to a weight ratio of 1:(1.2 to 1.5) through fully stirring, still soaking, high-temperature carbonization activation, recovery, rinsing, drying and powder preparation. The preparation method comprises two major work procedures of wood active carbon powder preparation and wood particle active carbon preparation. The product strength is high; the effective aperture pore volume is more developed; the distribution is more uniform; the adsorption and desorption performance is good; the gas flowing resistance is small.

The invention belongs to the technical field of catalyst preparation, discloses a honeycombed catalyst for low-temperature denitration and a preparation method. The honeycombed catalyst for low-temperature denitration comprises components in percentage by weight as follows: 82.29%-88.64% of a catalyst primary material, 3.29%-6.16% of a surfactant, 2.24%-5.08% of a crosslinking agent and 4.28%-6.96% of a reinforcing agent. The catalyst primary material, the surfactant, the crosslinking agent and the reinforcing agent are added to deionized water, and a muddy mixture is formed; the muddy mixture is subjected to mud smelting in vacuum, a product is aged, molded and dried under constant temperature and humidity conditions and calcined in a tunnel kiln until the product is dried sufficiently, and the honeycombed catalyst for low-temperature denitration is prepared. The honeycombed catalyst for low-temperature denitration has higher catalytic activity at the temperature of 180-300 DEG C and has the characteristics of good water resistance, acid and sulfur corrosion resistance capacity, high thermal stability, high catalytic activity, high mechanical strength and large specific surface area.

The invention provides an intensive treatment method and system for complex high-concentration organic ammonia-nitrogen wastewater. The system includes a water collecting regulating tank, an oil separator, a coagulation reaction tank, a inclined tube sedimentation tank, a Fenton reaction tank, an air flotation device, a Biochemical regulation tank, an A/O biochemical pool, an MBR membrane tank, anultrafiltration system, a same-position nitrification denitrification filter bed, a reverse osmosis system and a discharge tank which are connected in sequence; the method comprises the following steps: pre-treating the complex high-concentration organic ammonia nitrogen wastewater, adjusting the pH to acidity, performing flocculation, Fenton oxidation, biochemical regulation, A/O process, membrane treatment, filter bed treatment, reverse osmosis treatment, and up-to standard discharge. The method and the system greatly shorten the residence time of the complex high-concentration organic ammonia nitrogen wastewater in the biochemical treatment process, solve the problem of difficult wastewater treatment, have low maintenance and operation cost, have small floor space, improve operation efficiency, reduce filtration bed treatment and membrane treatment load, and can prolong the service life of the filter bed and membrane and reduce the cost.

The invention relates to the field of doors and windows, in particular to a constant-temperature health door and window comprising a door and window sash and a door and window frame body. Door and window shafts are arranged at the upper end and the lower end of the door and window sash, and the door and window sash is movably connected with the door and window frame body through the door and window shafts. When the door and window need to be moved or replaced, only hinges need to be dismantled, and use can be realized through installation after dismantling without vacuumizing like double-layerglass, and light transmittance is much higher than that of the double-layer glass. The door and window sash is coated with a thermal insulation coating, and the problem of poor thermal insulation performance of an existing door and window is solved. In addition, the edge of the door and window sash is coated with a sealing rubber pad, and the sealing rubber pad can seal the gap between the door and window sash and the door and window frame body after the door and window are closed, so that the thermal insulation effect of the door and window is further enhanced.

The invention discloses a method for extracting lithium in seawater by utilizing a Si-based mesoporous material. The method comprises the following steps: the seawater is filtered, the filtered seawater is heated to 40-50 degrees in a reaction tank, a prepared adsorbent is added, reaction under stirring is carried out for 4-6h, filtering is carried out, and the Si-based mesoporous material is collected and is subjected to desorption. The method is simple to operate, processing procedures are short, the lithium separation efficiency and the extraction speed are high, and the method is very suitable for large-scale industrialized production.

The invention relates to a lithium-rich manganese-based cathode material with a crosslinking structure and a preparation method thereof. The preparation method specifically comprises the following steps of (1) preparing a mixed reaction solvent of deionized water and organic alcohol; (2) mixing and dissolving soluble nickel, cobalt and manganese salts into the mixed reaction solvent; (3) heating the mixed reaction solvent to the reflux state by a microwave radiation manner; (4) under the continuous reflux state, adding an alkaline resource, and maintaining reaction, so as to obtain a nickel, cobalt and manganese hydroxide precursor; (5) fully mixing the nickel, cobalt and manganese hydroxide precursor and a lithium source, and calcining, so as to obtain the final lithium-rich manganese-based cathode material. The prepared lithium-rich manganese-based cathode material has the advantages that a crosslinking net-shaped structure is formed, the pore radius is rich, the crystallizing degreeis high, and the lithium ions are quickly disembedded and embedded at low resistance; the method for preparing the precursor of the lithium-rich manganese-based material is simple, the time is short,the organic solvent can be repeatedly recycled and used, the cost is reduced, the environment-friendly effect is realized, and the production efficiency is greatly improved.

A preparation method of natural aromatic sponge with high adsorbing efficiency includes the steps of (1) weighing chitosan, beta-cyclodextrin and gelatin, adding into a beaker, adding acetic acid solution 0.05-0.1 mol/L in concentration, fully dissolving the chitosan, beta-cyclodextrin and gelatin to obtain a mixed solution; (2) adding glutaraldehyde solution 25-50% in mass concentration into themixed solution, stirring well, pouring into a mold, placing in an oven for cultivating to form gel, placing in a refrigerator at 4 DEG C for 8-12 hours, placing a refrigerator at -18 DEG C to -20 DEGC for 8-12 hours, lyophilizing at -80 DEG C for 24-48 hours, and taking out sponge; (3) adding an essence into ethanol to obtain essence solution 1-5% in volume concentration; (4) cutting the sponge into cubes, adding them into the essence solution, and carrying out ultrasonic treatment; (5) taking out the sponge, placing in an oven at 30-40 DEG C for 1-2 hours, and taking out aromatic sponge. Thepreparation method herein helps improve the mechanical properties and adsorbing performance of the aromatic sponge and extend the aroma release time.

The invention discloses wood-pellet active carbon and a preparation method thereof, and belongs to the field of active carbon for a car carbon tank and a preparation method for the active carbon. Thewood-pellet active carbon adopts main raw material components of wooden activate carbon to organic sodium-based bentonite to water of 1 to (0.2-0.25) to (0.8-1.0), the three raw materials are uniformly mixed and then are pelletized, and are physically activated after being pelletized and dried in air to prepare the wood-pellet active carbon; the wood active carbon is prepared by mixing aged saw dust and hot-process food-stage phosphoric acid with concentration of 85% in a weight ratio of 1 to (1.2-1.5); the raw materials are sufficiently stirred and stewed, are carbonized and activated at a high temperature, are recycled, are rinsed, are dried in air and are prepared into powder. The preparation method comprises two main processes of preparing wood active carbon powder and preparing wood-pellet active carbon. The wood-pellet active carbon is high in product strength, is more advanced in effective aperture pore volume, is more uniform in distribution, is good in adsorption and desorption performance, and is small in gas flowing resistance.

The invention belongs to the field of slow-release fertilizer, and specifically discloses an efficient slow-release fertilizer for sainfoin on beach saline-alkali land. The fertilizer is characterized by including the following components by weight: polymer compound polyacrylamide, biochemical fulvic acid, mesoporous silica nanoparticles, activated micron zeolite powder, active lactic acid bacteria, composite sodium nitrophenolate, chelated zinc, ammonium paramolybdate, collagen, rice bran vinegar, plant fiber slurry, activated carbon activated powder dust waste tail gas, bran, fermented straw powder, and peptone. The invention uses macromolecular compound polyacrylamide and biochemical fulvic acid as a basic thin-film material; and materials in different sizes including micron composite hydrogel and mesoporous silica nanoparticles are added in the coating material, so as to enrich the pore size, dynamic slow release performance of the coating material, and improve the regulation of fertilizer efficiency. The efficient slow-release fertilizer promotes absorption and utilization of different nutrition materials in environment by sainfoin, and promotes the efficient cultivation.

The invention discloses a small-pore catalyst for fuel gas denitration and a preparation method. The small-pore catalyst is prepared from the following raw materials in parts by weight: 100 parts of a carrier, 2.20-8.21 parts of an active component precursor, 0.45-1.4 parts of aids and 150-250 parts of deionized water, wherein the carrier comprises aluminum titanate, zirconium oxide and tungsten oxide; the active component precursor comprises a nickel salt, a chromium salt and a ruthenium salt; and the aids comprise tetraethoxysilane, hydroxypropyl methyl cellulose, tung oil, aluminum dihydrogen phosphate, graphite and calcined kaolin. The preparation method comprises the following step: 1) performing ball milling; 2) kneading the raw materials; 3) blanking; 4) shaping blanks; and 5) calcining the blanks. The small-pore catalyst is applicable to nitric oxide removal of gas turbine sets, has the advantages of being high in denitration efficiency, small in size, long in service life and the like, has good application prospects, and is suitable for industrial application.

The invention discloses a vector material for immobilization of cellulase and a preparation method of the vector material. The preparation method comprises steps as follows: prepared polyacrylonitrile composite microspheres are added to DMAC (dimethylacetamide), soaked for 4-6 h, uniformly mixed with lithium chloride and then mixed with chitin and a catalyst uniformly, nitrogen is introduced, and the mixture is stirred at the room temperature for 2-4 h, then heated, stirred to react at the temperature of 100-120 DEG C for 18-24 h, cooled to the room temperature, washed with absolute ethanol and deionized water sequentially, vacuumized and dried. The vector material has good mechanical strength, better stability and relatively high binding force with enzymes and is longer in service life due to the fact that enzyme molecules cannot easily fall from a vector in use. The invention further provides a use method of the vector material for immobilization of the cellulase.

The invention belongs to the technical field of preparation of electrochemical sensors, and specifically discloses an electrochemical sensor with self-cleaning ability. The electrochemical sensor comprises an electrode core and a novel composite material based on MTOF (M refers to a doped metal element), and the composite material is attached to the surface of the electrode core. The preparation method of the sensor is simple, time-saving, low in cost and environmentally friendly. In particular, the residue of polymers and detected substance contained in the sensor and attached to the surfaceof the electrode core after detection can be oxidized under ultraviolet light and visible light conditions, thereby realizing the regeneration and self-cleaning effects of electrochemical sensor undervisible light. An electrochemical sensing platform regenerated under visible light not only reduces the tedious process of electrode polishing and modification, but also saves the cost of modifying materials, and the descaling regeneration of the electrode prolongs the service life of the electrode. The sensor is applied to the simultaneous detection of environmental pollutants, that is, hydroquinone and catechol, the operation is simple and convenient, the selectivity is good, the sensitivity is high, and the detection limit is low.