87results about How to "Larger than the area" patented technology

The invention discloses a multi-morphology rare earth doped BiVO4 composite photocatalyst and a preparation method thereof. The composite photocatalyst comprises the component of Ln(1-x)BiVO4, wherein Ln is equal to La, Ce, Pr, Nd, Sm, Gd, Dy, Er and Y, and x is equal to 0.01-0.3mol%. The photocatalyst disclosed by the invention has different morphologies and has the advantages of simple preparation technology, controllable morphology and crystalline phase structure of a target product and big specific surface area, and various organic pollutants, such as toxic and harmful phenols, aldehydes, and dyes, can be decomposed within a wider wavelength range.

The invention aims to improve the phosphorus removal rate of an artificial wetland and provides a filler special for the artificial wetland and a preparation method thereof. The preparation method comprises the following steps of: after mixing cement and fly ash by using water, adding an aluminum powder foaming agent, and uniformly stirring and mixing, wherein the mass ratio of the cement to the fly ash to the aluminum powder to the water is 50-100:10-30:0.1-0.5:25-50; and pouring the stirred slurry into a mold for molding, foaming at the temperature of between 20 and 50 DEG C for 20 to 60 minutes, and curing to prepare the filler special for the artificial wetland. The method has the characteristics of simple production method, low cost, and the like. The filler has the advantages of high phosphorus adsorption efficiency, high intensity, light mass, large specific surface area, and the like.

The invention discloses a fluorine-containing metal coating on the surface of an NdFeB rare-earth permanent magnet and a preparation method of the fluorine-containing metal coating, and belongs to the technical field of anticorrosion surface treatment. The fluorine-containing metal coating has the thickness of 5-40 microns and is prepared from polytetrafluoroethylene, solid powder and adhesive according to the mass ratio of (1-30):(2-30):(20-40). The preparation method includes the steps of firstly, preprocessing the surface of the NdFeB rare-earth permanent magnet through an oil removal and acid pickling or sand blasting method; secondly, preparing the coating through a centrifugal soaking and throwing or spraying method. Polytetrafluoroethylene contained in paint for preparing the coating has excellent corrosion resistance, and the corrosion resistant capacity of the surface of the NdFeB rare-earth permanent magnet can be improved; in the coating process, no acid bath is used, the fresh surface of the magnet is not damaged after preprocessing, and the surface adhesion force between the coating and the magnet can be effectively improved; no acid waste liquid exists, the environment is not polluted, and the preparation method belongs to the green and environment-friendly coating process.

A method for preparing a liquid chromatography monolithic column based on metal-organic frameworks. The porous MOFs (metal-organic frameworks) and organic polymer monolithic materials are used as separation media, and the stainless steel liquid chromatography monolithic column is prepared by means of in-situ polymerization. Firstly, the MOFs are prepared by means of self-assembly reaction of different metal centers and organic ligands, activated at a certain temperature and ultrasonically dispersed in solvents to obtain suspending liquid of the MOFs. Secondly, the suspending liquid is added into precursor solution, and the doped monolithic column is prepared by means of thermal-initiation polymerization. Thirdly, pore-foaming agents in the MOFs monolithic column are flushed at a high flow rate by a liquid high-pressure pump, and then the liquid chromatography monolithic column can be prepared. The method has the advantages that the superiority of double separation of the MOFs and the monolithic column is integrated, the shortcomings of large backpressure, high consumption of the separation media, complicated filling and the like of a traditional packed column are overcome, the types of the MOFs serving as separation media are expanded, and large-scale popularization and application are facilitated.

The invention discloses a preparation method of a Ni-based catalyst modified by an aid Pt supported by multi-wall carbon nanotubes as a carrier and application. The preparation method comprises the following steps: firstly, performing acid modification on multi-wall carbon nanotubes by using nitro-sulfuric acid; by taking the multi-wall carbon nanotubes as a carrier, putting precursor salts of platinum and nickel according to the multi-wall carbon nanotubes to hexachloroplatinic acid hexahydrate and nickel nitrate hexahydrate according to a mass ratio of (5-10):(0.1-0.5):(5-10); further addingdeionized water, performing ultrasonic stirring, drying, and performing roasting and reduction, thereby finally obtaining an expected catalyst Pt-Ni / MWCNT. The catalyst prepared by using the method is low in cost, economic and effective, good in universality, good in environmental-friendliness, free of equipment corrosion and good in circulation property, and is relatively high in activity and relatively high in p-aminophenol selectivity under a relative gentle reaction condition in a process that p-aminophenol is prepared from nitrobenzene through one-step hydrogenation rearrangement, the production conditions can be improved, the production cost is reduced, and the product quality is improved.

The invention relates to a cyclosporine-containing composition and a preparation method thereof. The compound eye drops are prepared from cyclosporine, anti-inflammatory or antibiotic drugs, a surfactant, a stabilizer, a thickener, an isoosmotic adjusting agent, a pH adjusting agentr and water or oil, the preparation is a mixed suspension agent or an emulsion, and one or two of a high pressure homogenization method and a wet grinding technique is / are combined for use in the preparation method. The cyclosporine compound eye drops have the advantages that the ophthalmic tolerance is excellent, the drug utilization degree is high, the tear secretion of people suffering from xerophthalmia can be effectively improved, the tear film is stabilized, the anti-inflammation function of the anti-inflammatory or antibiotic drugs and the immunoregulation function of cyclosporine can be synergistically exerted, xerophthalmia can be effectively treated, and the compound eye drops have a better treatment effect compared with the separate application of cyclosporine.

The invention relates to a composite nanofiber air filtration material and a preparation method thereof. The material comprises a nanometer polyvinyl alcohol fiber layer and an interweaving layer of nanometer polyvinyl alcohol fibers and polyacrylonitrile fibers, the air filtration material in the four layer structure of the nanometer polyvinyl alcohol fiber layer and the interweaving layer of the nanometer polyvinyl alcohol fibers and the polyacrylonitrile fibers in cross distribution is obtained through one-time electrostatic spinning, the diameter of the polyvinyl alcohol fiber layer ranges from 400 nm to 1,000 nm, the diameter of the electrostatic spinning polyacrylonitrile fibers ranges from 150 nm to 500 nm, the porosity ranges from 75% to 90%, the average pore size ranges from 0.4 mu m to 6 mu m, and crosslinking treatment is performed. The performance that the composite nanofiber air filtration material is not prone to layering and better mechanical properties can be obtained, the filtration efficiency to NaCl aerosol with number median diameter of 75 nm ranges from 99.94% to 99.99%, and the pressure is reduced to be 180-600 Pa. The material is particularly suitable for fields such as personal protective products, air quality testing equipment and air purification devices.

The invention provides a magnetic microbial carrier and a preparation method thereof. The magnetic microbial carrier is a macromoleclar polymer with a magnetic cross-linked structure, the macromoleclar polymer is polyvinyl formal, the polyvinyl formal is foamed and modified through a composite enhancing component and comprises silicon packaged magnetic powder, and the composite enhancing component is made of at least one of activated charcoal particles, siliceous marl, kaolinite, coal ash and hydrophilic silicon dioxide. According to the invention, the preparation process is simple, the operation is easy, and the prepared magnetic microbial carrier can solve the problems that a conventional porous carrier can not effectively fix microbes and diversified environments in carriers are hard to be formed.

The invention provides a preparation method of a magnetic microbial carrier. The magnetic microbial carrier has a magnetic crosslinked-structure high-molecular polymer and silicon coating magnetic powder, wherein the high-molecular polymer is polyvinyl formal which is foamed and modified by a composite reinforcing component; and the composite reinforcing component is composed of at least one of activated carbon particle, kieselguhr, kaolin, fly ash and hydrophilic silicon dioxide. The preparation process is simple and easy to operate; and the prepared magnetic microbial carrier can solve the problems that the existing porous carrier can not effectively fix the microbes and a diversified environment can not be easily formed in the carrier.

The invention relates to a method for preparing a mesoporous AgGaO2 photocatalytic material. The mesoporous AgGaO2 photocatalytic material is prepared through two steps. Firstly, mesoporous AgGaO2 is prepared by the utilization of the sol-gel method, and then, the prepared AgGaO2 is used as a raw material to be synthesized to form AgGaO2 through the ion exchange method. The method has the advantages of being unique in technology and convenient to operate. The prepared mesoporous AgGaO2 is large in specific surface area, adjustable and controllable in pore structure and high in photocatalysis activity, and has broad application prospects in the fields such as indoor air purification. The method for preparing the mesoporous AgGaO2 photocatalytic material can provide a new idea for optimization design and large-scale preparation of other novel polybasic metallic oxide photocatalytic materials containing silver.

The invention provides an electrolytic aluminum prebaked anode anti-oxidation insulating coating. The electrolytic aluminum prebaked anode anti-oxidation insulating coating comprises the following components in percentage by mass: 60%-75% of a main component, 0.01%-5% of a secondary component, 24%-34% of a nano solvent binding phase and 0.01%-5% of a coating stabilizing phase, wherein the main component comprises amorphous aluminum oxide, nano-scale rho-Al2O3, nano-scale gamma-Al2O3 and nano-scale alpha-Al2O3. The insulating coating prepared by the invention can be cured at normal temperaturefor 6-8 hours after being sprayed to an anode by a spraying machine, the anode coating can form a compact net-shaped structure at the working temperature of 500-800 DEG C, the long-term tolerable temperature is over 900 DEG C, and the physical and chemical properties are stable.

The invention discloses a composite nano-fiber PM2.5 filtering material and a preparation method thereof. The material comprises a polyacrylonitrile and gelatin cross-linked composite nano-fiber film. An air filtering material provided by the invention with a polyacrylonitrile and gelatin composite nano-fiber netted cross-linked structure is acquired through the disposable electrostatic spinning and heating after-treatment. The diameter of the polyacrylonitrile and gelatin composite nano-fiber is 150-300nm, the porosity is 80%-90% and the average pore size is 0.5um-6um. The composite nano-fiber with compact structure, uniform netted cross-linking and better mechanical property and hydrophilic air permeability can be acquired; the filtering efficiency thereof for the NaCI aerosol with the median diameter of 200-300nm is 99.82%-99.91%; the pressure drop is 120-150Pa; the breaking strength is 10.92mPa; the elongation at break is 89.85%; the air permeability is 16820mL / (cm<2>.h). The material is especially suitable for the fields of personal protection products, air quality detecting equipment, air purifying equipment, and the like.

The invention discloses decontaminable water-permeable concrete with strong decontamination ability and high mechanical strength and a preparation method thereof. The decontaminable water-permeable concrete is composed of the following components in percentages by mass: 75% to 80% of aggregate, 13% to 17% of cement, 3% to 6% of water, 1% to 2% of fly ash, 0.34% to 0.73% of a reinforcing agent and0.05% to 0.09% of a water reducing agent, wherein 10% to 20% of the aggregate is replaced by ceramsite as an improvement. The preparation method for the decontaminable water-permeable concrete comprises the following steps: (10) aggregate moisturizing: a step of adding all aggregate including the ceramsite and 50% of the water into a stirrer, and carrying out stirring for 30 s so as to moisturizethe surface of the aggregate; (20) material mixing: a step of adding the cement, the fly ash, the reinforcing agent and the water reducing agent into surface-moisturized aggregate, and carrying out stirring for 60 s; and (30) material discharging: a step of adding remained water into the stirrer, carrying out uniform mixing under stirring, filling a material by layers, carrying out intercalation tamping for molding, and carrying out curing so as to obtain the decontaminable water-permeable concrete.

The invention provides a foaming polyvinyl formal microbial carrier and a preparation method thereof. The preparation method comprises the following steps of placing starch and a PVA (Polyvinyl Alcohol) water solution into a water bath at 90 DEG C, mechanically stirring till dissolution, and then adding glycol and 4-5 mol / L of sulfuric acid; step 20, uniformly stirring the solution at 60-80 DEG C, slowly adding formaldehyde, adding a carrier elasticity reinforcing agent, fast increasing the stirring speed to 450-700 rpm, and controlling reaction time to 20 minutes to form a foam solution; pouring the foam solution into a mould, and reacting under the condition of 60-80 DEG C for 18-22 hours to obtain the foaming polyvinyl formal microbial carrier. The foaming polyvinyl formal microbial carrier provided by the invention has the advantages of good elasticity, good hydrophilicity, large specific area, high porosity, high biological binding force and the like.

The invention relates to a method for reinforcing cane juice neutralization reaction by hydraulic micro-oscillation, which is applicable to a clarification technique of cane juice or liquid glucose by a sulfurous process. The method comprises the steps of preliming, primary heating, stoving neutralization, hydraulic micro-oscillation reinforced cane juice neutralization reaction, secondary heating and settling. The hydraulic micro-oscillation reinforced cane juice neutralization reaction is implemented in a way that: the cane juice or neutralized juice subjected to stoving neutralization reaction is pumped into a hydraulic micro-oscillation reinforced cane juice neutralization reaction device to subjected to hydraulic micro-oscillation reinforced cane juice neutralization reaction, and enters the steps of secondary heating and settling. The hydraulic micro-oscillation reinforced cane juice neutralization reaction device for implementing the method can change the size of the flow section of the cane juice or liquid glucose in the flowing process: the device is a cylindrical container or tubular container with inconsistent cross-sectional area. The method and device provided by the invention can reinforce the cane juice neutralization reaction, and enhance the purity of the clear juice by more than 1%; and the consumption of lime and sulfur is reduced by more than 20%.

The invention discloses a soil improving agent based on montmorillonite modification. The soil improving agent is prepared from 42-46 parts by weight of modified montmorillonite, 26-30 parts by weightof biomass fertilizer, 16-20 parts by weight of inorganic mineral soil, 14-18 parts by weight of natural humus soil, 4-6 parts by weight of a heavy metal adsorption promoter, 3-5 parts by weight of ammonium dihydrogen phosphate, 1-3 parts by weight of phosphate-dissolving bacteria, 1-2 parts by weight of nitrogen-fixing bacteria and 1-3 parts by weight of coptis root extract. The soil improving agent has complete functions, can provide rich nutrients, can adsorb heavy metals in soil, has improvement effects obviously higher than those of the prior art and has a high use value and a good application prospect.

The invention discloses an environment-friendly water purifying agent for aquaculture. The environment-friendly water purifying agent is prepared from the following raw materials in parts by weight: 34-36 parts of aluminum potassium sulfate dodecahydrate, 20-22 parts of polydimethyl diallyl ammonium chloride, 18-22 parts of polyacrylamide, 14-16 parts of attapulgite, 12-16 parts of fly ash, 10-12parts of activated charcoal, 9-11 parts of nano-silica, 9-11 parts of nano-silicon oxide, 7-9 parts of nano-titania, 6-8 parts of chitosan, 5-7 parts of disodium edetate, 3-5 parts of graphene oxide,2-4 parts of aluminum sulfate and 1-3 parts of polymerized ferric sulfate. According to the environment-friendly water purifying agent for the aquaculture, provided by the invention, the water purifying agent is environmentally friendly and efficient, meanwhile, is good in water purifying effect, cannot cause secondary pollution and has a relatively high use value and a good application prospect.

The invention relates to precious-metal-carried mesoporous composite oxide catalyst and a preparation method and application thereof. The catalyst chemically comprises X / ZrO2-TiO2. The ratio of Zr to Ti is 7:3. Precious metals X can be at least one of Ru, Rh, Pd, Pt and Au. The precious metal X (Pd) accounts 0.5-1.5wt% of total weight of the catalyst. The catalyst has the advantages that carrier ZT is large in specific area, high in acidity and stability, and assistive in dispersion of activity centers of precious metals; the modified carrying manner allows the activity centers of precious metals to highly disperse in the carrier in an amorphous pattern, and coordination of the precious metals help improve CO catalysis of the catalyst.

The invention discloses a hot plate of metal fiber felt liquid absorption cores, and belongs to the technical field of heat exchange equipment using a middle heat transfer medium or a middle heat transfer body. The hot plate comprises a sealed shell body, a first metal fiber felt liquid absorption core, a second metal fiber felt liquid absorption core, a supporting frame and heat conduction liquid working medium. The supporting frame, the first metal fiber felt liquid absorption core and the second metal fiber felt liquid absorption core are installed in the sealed shell body. The heat conduction liquid working medium is filled in the sealed shell body. Compared with the prior art, the hot plate has the advantages that the metal fiber felt liquid absorption cores have good capillary force and permeability, combination strength and contact areas between fibers are increased, large quantities of three-dimensional net-shaped porous structures are formed among the fibers, the porosity is high, specific areas are large, liquid backflow resistance is little, the backflow speed of the liquid working medium in the hot plate is beneficially improved, and therefore heat dissipation performance of the hot plate is improved.

The invention relates to a method for producing a sliding bearing (1) comprising a supporting layer (2) and a sliding bearing layer (3), wherein the supporting layer (2) is connected to the sliding bearing layer (3) by way of roll bonding, and wherein prior to the roll bonding a surface structuring (4) is produced on the surface of the supporting layer (2) and the sliding bearing layer (3) is then rolled onto the surface structuring (4).

The invention discloses a chemical formula of an efficient soil improver. The efficient soil improver is prepared from the following raw materials in parts by weight: 32-36 parts of straw, 14-18 partsof humic acid, 12-16 parts of biomass carbon, 8-10 parts of superfine slag powder, 6-8 parts of maifanite powder, 2-6 parts of ground phosphate rock, 2-4 parts of ammonium hydrogencarbonate, 4-8 parts of a heavy metal treatment agent, 4-6 parts of a soil aggregation promoter and 1-3 parts of a water retention agent. The invention aims at providing the chemical formula of the efficient soil improver. The soil improver can provide rich organic matters, enable the soil to aggregate and remove heavy metals in the soil, thus having higher practical value and good application prospect.

The porous filming material for water treatment consists of clay 30-60 wt%, loess 30-60 wt%, kaolin 5-20 wt% and pore creating material 5-20 wt%. The product of the present invention is spherical haydite, and has high mechanical strength, high erosion resistance, high wear resistance and stable physical and chemical properties as well as rich pores, rough surface, great specific surface area, long service life, high adsorption performance, etc. It has high dirt intercepting capacity and high filming efficiency, is suitable for the growth and propagation of microbe and may be used to eliminate organic matter, suspension, nitride, phosphate, etc from water.

The invention discloses a formula for improving soil. The formula comprises the following raw materials of, by weight, 32-36 parts of dry organic matters, 14-18 parts of humic acid, 12-16 parts of biomass carbon, 8-10 parts of slag micro-powder, 6-8 parts of medical stone powder, 2-4 parts of ammonium hydrogen carbonate, 4-8 parts of a heavy metal treatment agent, 4-6 parts of a soil aggregate promoter and 1-3 parts of an acid-base conditioner. The invention aims to provide a formula for improving soil, a soil modifying agent can provide the abundant organic matters, the soil aggregates, heavymetal in the soil is removed, the practical value is higher, and the application prospect is good.

The invention discloses a transparent PM2.5 filtering membrane with photocatalysis and a preparation method of the transparent PM2.5 filtering membrane. The transparent PM2.5 filtering membrane is a composite nano fiber membrane of a sandwich-like structure and comprises polyacrylonitrile @TiO2 and polyamide-6, wherein the nano fiber diameter of the composite nano fiber membrane is 60-100nm. The composite membrane is densely cross-linked in a net manner and meanwhile has a photocatalysis function, high transparency and an efficient PM2.5 filtration property, when being applied to a protectivenano screen window, the membrane is capable of not only effectively preventing outdoor PM2.5 from entering a room, but also photocatalyzing low-concentration harmful gases in the atmosphere in a photocatalysis manner under the action of sunshine, and meanwhile good lighting and ventilation effects are maintained.

The invention discloses a building high-strength grouting material. The building high-strength grouting material is prepared from, by weight, 44 parts of Portland cement, 33 parts of silver sand, 5 parts of fiber mixture, 4.5 parts of superfine slag powder, 2 parts of expanding agent, 1.5 parts of water reducing agent, 2 parts of defoaming agent, 3 parts of organic silicon microspheres, 4 parts ofglass beads and 1.2 parts of tetraethylenepentamine. The building high-strength grouting material is good in heat preservation and physical strength performance and high in compressive strength and breaking strength and has the high practical value and the good application prospect.

The invention relates to biochar, in particular to modified biochar and a method for repairing heavy metal pollution of soil by using the modified biochar. The modified biochar is prepared by the following method: S1, air-drying corn straws; s2, crushing the corn straws to obtain straw powder; s3, adding water into the straw powder, and stirring until the water content of the straw powder is 20-30%; s4, feeding the straw powder into a carbonization furnace, and closing the carbonization furnace; s5, introducing carbon dioxide gas, and emptying air in the carbonization furnace; s6, increasing the temperature to 100 DEG C, and performing heat preservation for 15-30 min; s7, increasing the temperature to the carbonization temperature, wherein the carbonization temperature ranges from 680 DEG C to 750 DEG C, the carbonization time ranges from 1 h to 2 h, and obtaining the modified biochar; s8, cooling to room temperature after carbonization is finished; and S9, heating the modified biochar into a ball mill, and grinding to obtain the modified biochar powder with the particle size of 10-20nm. The modified biochar has larger specific area and pore volume, richer oxygen-containing functional groups and stronger pollutant adsorption capacity.

The invention discloses a method for synthesizing porous oxide microspheres with a vanillin alloy complex as a precursor. The method includes the steps of firstly, synthesizing a vanillin alloy complex (Zn-MOF material or Cu-MOF material) by solvothermal reaction, and roasting the vanillin alloy complex which serves as the precursor in the presence of air so as to obtain a porous oxide (zinc oxideor copper oxide material). The obtained porous zinc oxide material, with the average particle diameter of 2-4 micrometers, has a hexagonal wurtzite structure, is high in specific surface area, and can effectively improve the defects that a traditional zinc oxide material is easy to agglomerate and is limited in photocatalytic performance due to insufficient exposed active sites and specific surface area. The obtained porous copper oxide microspheres with the average particle size of 1-5 micrometers are monoclinic, has a large specific surface area, and can effectively improve the defects thata traditional copper oxide material on a super capacitor is insufficient in specific surface area and low in energy density. The method is simple, low in cost and suitable for popularization and application.

The invention relates to an oily sludge concentrating agent as well as preparation and application thereof. The oily sludge concentrating agent comprises cement, fly ash, diatomite and polyaluminum, wherein the proportion by mass of the cement, the fly ash, the diatomite and the polyaluminum is 1:(0.5-2.5):(0.5-2.5):(0.005-0.05); and a production method of the oily sludge concentrating agent comprises the following steps of: firstly grinding the fly ash into fly ash powder in 100-300 meshes, mixing with the diatomite in 100-300 meshes, the cement in 100-300 meshes and the polyaluminum in 100-300 meshes according to the proportion by mass and uniformly stirring. Oil, water and sludge can be thoroughly separated by adding 0.5-1.5 percent by mass of oily sludge concentrating agent into oily sludge containing 99 percent of water; and the oily sludge concentrating agent has the advantages of high settling velocity, good sludge concentrating effect, less dosage, low cost and convenience in feeding.

The invention discloses high-performance heat-insulation bricks for a building. The high-performance heat-insulation bricks are prepared from the following raw materials in parts by weight: 34 to 40 parts of modified fly ash, 28 to 30 parts of high molecular microspheres, 22 to 26 parts of portland cement, 16 to 20 parts of bentonite, 14 to 18 parts of kaolin, 20 to 24 parts of woody fibers, 16 to18 parts of glass microspheres, 8 to 10 parts of fireproof clay, 4 to 6 parts of de-foaming agent and 4 to 8 parts of filler. The high-performance heat-insulation bricks for the building have the advantages that the heat-insulation bricks have excellent compressive strength and good fireproof performance; furthermore, the heat-insulation bricks have a long service life and relatively high practical value and a good application prospect.

The invention discloses a preparation method and an application of a multi-walled carbon nanotube supported La and Al co-modified platinum-based catalyst. A multi-walled carbon nanotube is subjected to acid modification, a certain amount of chloroplatinic acid water solution is added, a nitrate precursor is added according to a certain proportion, and drying, calcining and reducing are performed after reaction to obtain the catalyst, namely, La-Al-Pt / MWCNT. The preparation method is simple, the needed catalyst can be obtained by a primary impregnation method, a carrier is low in price and easyto obtain, the cost is greatly reduced, recycling effects are good, the obtained catalyst is used for glycerol hydrogenation reaction, short in reaction time, economical, effective, environmentally friendly and low in hydrogen consumption, products are easily separated, high glycerol transformation rate and 1, 3-propylene glycol selectivity can be achieved under mild reaction conditions, processproduction conditions are improved, and the quality of corresponding products is improved.