80results about How to "Preparation raw materials are cheap" patented technology

The invention provides a high-activity catalyst for catalyzing complete oxidation of low-concentration formaldehyde under the condition of room temperature. Said catalyst is made up by using simple easy-available metal oxide and small quantity of noble metal as raw material, its preparation method is simple. The metal oxide is used as main body of said catalyst, the noble metal component is loaded on the metal oxide. The described metal oxide can be at least one of cerium dioxide, zirconium dioxide, titanium dioxide, aluminium oxide, lanthanum sesquioxide, magnesium oxide, zinc oxide, calcium oxide and copper oxide, and the described noble metal component can be at least one of platinum, gold, rhodium, palladium and silver.

The invention provides fused iron catalyst for producing light olefins from syngas and a preparation method and application thereof. The fused iron catalyst includes iron oxide and cocatalyst and the proportion of the components is as follows by weight percent: 0.1-5 alumina, 0.1-6 potassium oxide, 0.1-4.0 calcium oxide and 0.01-8.5 other oxides, and balance iron oxide. The fused iron catalyst has the beneficial effects that (1) the materials of the fused iron catalyst are cheap and easy to get, the preparation process is simple, and the fused iron catalyst is low in cost and is suitable for industrial production; (2) the fused iron catalyst is of high mechanical strength as well as good pressure resistance and abrasion resistance and is suitable for a fixed bed, a fluidized bed and a slurry bed reactor; and (3) the fused iron catalyst has high Fischer-Tropsch synthesis activity and selectivity, the conversion per pass can be more than 95%, the selectivity of the methane is less than 10% and the content of the light olefins can reach 80-90%.

The invention provides a gel polymer electrolyte preparation method based on a 3D printing technology. The 3D printing technology is used for printing a framework with a network structure inside; theframework is put into a methyl methacrylate monomer mixed solution comprising a cross-linking agent and an initiator to be dipped for a period of time; a vacuum high-temperature condition is adopted for initiation cross linking of methyl methacrylate; and the obtained framework rich in polymethyl methacrylate is immersed in an electrolyte solution for a period of time, so as to obtain a framework-reinforced gel polymer electrolyte. The framework is obtained through 3D printing, so that size of the gaps of the framework can be adjusted and controlled, the three-dimensional net structure, formedby crosslinking polymerization with polymethyl methacrylate, can form a relatively stable structure; and therefore, when the gel polymer electrolyte is formed, the strength of the electrolyte is greatly improved by the framework material, thereby overcoming the defect that an existing gel polymer electrolyte is not high in strength.

The invention relates to a temporary plugging agent for drilling fluid and a preparation method of the temporary plugging agent, which belong to the technical field of chemical drilling fluid treatment agents for oil fields. The temporary plugging agent for the drilling fluid is prepared by crosslinking polymerization reaction of 2-acrylamide-2-methyl propanesulfonic acid, acrylic acid, acrylamide, an inorganic material, an inorganic aluminium salt crosslinking agent, an N,N-methylene-bis-acrylamide organic crosslinking agent and an initiator under alkaline conditions. The inorganic material is introduced and the organic crosslinking agent and inorganic crosslinking agent are mixed for the crosslinking polymerization reaction; raw materials of the temporary plugging agent are rich and cheap, the temporary plugging agent is easy to produce industrially, has better high-temperature resistance (up to 150 DEG C), can effectively plug a well wall throat, reduces filtrate invasion to a reservoir, contributes to the well wall stabilization and has the effect of adjusting a flow pattern of the drilling fluid; and in addition, fluorescence interference does not exist, acidification and unplugging are easy, the stratum permeability can be recovered effectively, the productive capacity of a hydrocarbon reservoir is improved, and the reservoir can be protected.

The invention discloses a preparation method of a porous carbon microsphere. The preparation method comprises the following steps: subjecting o-dihydroxybenzene and formaldehyde to carry out polymerization reactions in a silica sol solution under the catalytic action of acid so as to obtain compound microspheres of o-dihydroxybenzene-formaldehyde resin-oxidized nano particles, and then subjecting the compound microspheres to the processes of carbonization and silicon oxide removing so as to obtain porous carbon microspheres with a even particle size. The size of the porous carbon microsphere is in a micron scale range; the porous carbon microsphere has a good spherical shape and a rough surface, is rich in medium holes with a size of 10 to 40 nanometers, integrally has two hole structures, namely the medium hole and the micro hole, and has a large specific surface area. The porous carbon microsphere has a high purity, and the carbon content can reach 95% or more.

The invention discloses a preparation method of a high-performance porous-hollow composite anode material. An SiO<2> layer is introduced into the surface of a high-capacity nano anode material as a sacrificial layer; a uniform carbon layer is introduced through in situ polymerization of phenolic resin; a high-molecular polymer and a soft template are subjected to cross-linking polymerization on the surface; and the high-performance porous-hollow composite anode material is prepared through high-temperature carbonization and template removal methods. The invention further discloses the high-performance porous-hollow composite anode material and an application thereof. According to the characteristics of a lithium battery anode material in charge and discharge cycles, the uniform carbon layer coats the outside of an intermediate layer of an active material, and a uniform mesoporous structure is designed in the middle of the outer carbon layer, so that the electrochemical properties of the electrode material are effectively improved. The high-performance porous-hollow composite anode material is cheap in preparing raw materials, simple in operation process and high in yield; the charge and discharge properties of the material are excellent; and industrial production is facilitated.

The invention discloses a preparation method of a phosphorus vanadium catalyst for using acetic acid and formaldehyde to synthesize crylic acid, comprising the following steps of: taking vanadium pentoxide, solid orthophosphoric acid and isobutanol as main materials, firstly mixing the isobutanol and the vanadium pentoxide, then using the isobutanol to dissolve the solid orthophosphoric acid completely, adding a certain amount of aluminium oxide while mixing the mixture, finally carrying out vacuum filtration and drying on reactants to obtain a phosphorus vanadium catalyst precursor, before use, rising the temperature to 380 DEG C at the activation temperature rising rate of 3 DEG C/min, introducing air to activate for two hours, and obtaining a novel phosphorus vanadium catalyst. The phosphorus vanadium catalyst is used as a catalyst in synthesizing the crylic acid by taking the acetic acid and the formaldehyde as materials; and in the reaction temperature interval of 320-380 DEG C, and under the optimum reaction condition, the single-pass yield of the crylic acid can be up to 93.5mol%, and the catalytic performance of the catalyst is obviously higher than that of the similar catalyst in synthesizing the crylic acid by taking the acetic acid and the formaldehyde as materials reported at present.

The invention discloses intelligent nano-silver hydrogel. A preparation process of the intelligent nano-silver hydrogel comprises the following steps of: 1, dissolving silver nitrate and hydroxypropyl methyl cellulose used as raw materials into purified water to prepare a hydroxypropyl methyl cellulose-silver nitrate complex; and 2, on the basis of taking a complex solution as a precursor, reducing silver ions in the precursor solution by using hydrate electrons and free radicals produced by ultraviolet irradiation to prepare nano-silver gel, coating nano-silver by the hydroxypropyl methyl cellulose through the action of sulfydryl and silver, and forming hydrogel by amino and carboxylic acid of the hydroxypropyl methyl cellulose as hydrophilic residue network water molecules to prepare the nano-silver hydrogel. Compared with the nano-silver hydrogel prepared by using the traditional method, the intelligent nano-silver hydrogel disclosed by the invention has the advantages of few raw materials, simple preparation method, good antibacterial effect, good stability and the like and can have no remarkable change after being exposed in air for one year.

The invention discloses a high-entropy ferrite porous ceramic material as well as a preparation method and application thereof, and belongs to the field of inorganic functional materials. The chemical composition of the high-entropy ferrite porous ceramic material is (Mg<0.4-x>Co<x>Ni<0.2>Zn<0.2>Cu<0.2>)Fe<2>O<4>, wherein x is more than 0 and less than or equal to 0.2. The preparation method comprises the following steps: dissolving glycine, magnesium nitrate, cobalt nitrate, nickel nitrate, zinc nitrate, copper nitrate and ferric nitrate in water to obtain a mixed solution; adjusting the pH value of the obtained mixed solution, and conducting heating until the solution is subjected to combustion reaction to obtain precursor powder; and carrying out heat treatment, molding and sintering on the obtained precursor powder to obtain the high-entropy ferrite porous ceramic material. The high-entropy ferrite porous ceramic material disclosed by the invention integrates the advantages of a high-entropy effect and a foam structure synergistic effect, has a self-supporting capability and a high specific surface area, is convenient to transport, store and recycle, and has a good application prospect.

The invention discloses a preparation method of cotton bast fiber and chitosan composite nonwoven fabric for filtering, and belongs to the technical field of fiber materials. Cotton bast is separatedthrough steam flash-explosion pretreatment, formation is conducted by a papermaking method, and chitosan is added to enhance the mechanical property and the filtering efficiency. The preparation method is simple, convenient and environment-friendly in process flow and adapts to industrialized production. The nonwoven fabric adopts lignin-enriched cotton bast fiber and chitosan as raw materials, sothat the nonwoven fabric has high antibacterial property. The cotton bast and the chitosan are biology-based materials and can be degraded in the natural environment after use, so that environmentalburden is reduced and the problem that the electrostatic spinning method is difficult in industrialized and mass production is solved.

The invention discloses a method for preparing functional porous micro-spheres.Firstly, chitin powder is dissolved in sodium hydroxide/urea aqueous solution through multigelation, then chitin solution forms stable emulsion droplets in an oil phase containing a surfactant so that chitin micro-spheres can be obtained through thermally induced phase separation, and finally the functional porous micro-spheres coated with TA-Ti are obtained through simple impregnation of chitin micro-spheres in polyphenol TA solution and Ti-BALDH solution by means of the adhesion characteristic of polyphenol on the surface of a matrix and the strong coordination effect of metal ions.Raw materials for preparation are cheap and easy to obtain, the preparing process is simple and easy to implement, and preparing conditions are mild.By changing the concentration of TA during preparation, functional regulation of the functional porous micro-spheres can be achieved.

The invention relates to a super-microporous covalent triazine skeletal material with excellent CO2 adsorption and separation performance and a preparation method. The covalent triazine skeletal material is a porous skeletal material polymerized from an organic monomer through a covalent bond under the action of a catalyst zinc chloride. The covalent triazine skeletal material has a specific surface area of 100-3000m<2>/g, a pore diameter of 4-50angstrom, and a pore volume of 0.05-0.5cm<3>/g. The preparation method includes: mixing the organic monomer fumaronitrile with zinc chloride evenly, loading the mixture into an ampoule bottle, conducting vacuum pumping and sealing; and polymerizing the mixture in a tube furnace at certain temperature into the super-microporous covalent triazine skeletal material with excellent CO2 adsorption and separation performance. The material not only has high stability, but also has very high CO2 adsorption capacity, separation selectivity and good reproducibility.

The invention belongs to the field of end gas decontamination of diesel cars, and in particular relates to a MnOx-Wo3/TiO3 catalyst for selective catalytic reduction of nitrogen oxide, which is used for treating NOx in the end gas of diesel cars in moderate/low temperature environment (120-300 DEG C) and prepared by an immersion method. The catalyst adopts a common metal oxide MnOx as an active component, the raw materials are low-cost and easily obtained, the use condition is simple, and the catalyst can be mass produced. The catalyst disclosed by the invention can be used for catalyzing ammonia selective reduction nitric oxides to be harmless nitrogen and water in the low temperature environment of 120 DEG C, and the high conversion rate of the catalyst can be kept at about 300 DEG C.

The invention discloses a preparation method of a heterojunction photocatalyst for NADH regeneration. The preparation method comprises preparing a hexagonal prism melamine-cyanuric acid supramolecularcomplex from melamine and cyanuric acid in a water phase under the action of hydrogen bonding and pi-pi stacking, carrying out thermal treatment to further crystallize the supramolecular complex (abbreviated to CM) for keeping the morphology, roasting the supramolecular CM at a high temperature to obtain hollow tubular g-C3N4, and keeping the hexagonal prism shape. The novel visible light response semiconductor g-C3N4 is thermally stable at 500 DEG C and retains the chemical properties. In the vapor deposition process, red phosphorus is deposited on the surfaces of hollow g-C3N4 nanotubes byhigh temperature sublimation so that g-C3N4 nanotubes loaded with red phosphorus quantum dots (abbreviated to g-C3N4-NTs@rP-QDs) is produced. The preparation method utilizes cheap and easily availableraw materials and has simple and easy processes. Through change of the mass ratio of red phosphorus to g-C3N4 in the calcination deposition, the adjustment and control of red phosphorus content of g-C3N4-NTs@rP-QDs are realized.

The invention provides high-activity nano zinc oxide and a preparation method thereof, and relates to the technical field of nano oxidant preparation. The preparation method of the high-activity nano zinc oxide comprises the following steps: mixing a pure zinc sulfate solution with a sodium carbonate solution in a weight ratio of 1:(1.1-1.5), performing neutralization operation at 70-80 DEG C, and adjusting the content of Zn<2+> in the solution to be less than 1.5g/L so as to obtain a mixed solution; performing press filtration on the mixed solution, and separating the mixed solution so as to obtain basic zinc carbonate; washing off sulfate radicals in the basic zinc carbonate, and performing pressing filtration so as to obtain basic zinc carbonate filter cakes of which the water content is 25-35%; drying the basic zinc carbonate filter cakes so as to obtain powder basic zinc carbonate, and performing flash calcining at 600-700 DEG C. The preparation method is good in operability, and in addition preparation raw materials can be effectively saved. Meanwhile, the high-activity nano zinc oxide prepared by using the preparation method is relatively high in activity, uniform in particle size, large in specific surface area and stable in property.

The invention relates to chelation group-containing chitosan. The chelation group is crosslinked amino dithioformyl, ferric ion-loaded amino methylene phosphate and a heavy metal element. The invention also relates to a preparation method for the chelation group-containing chitosan. The chelate chitosan can remove a plurality of pesticide residues from agricultural and sideline products or food efficiently, quickly and conveniently, so that the agricultural and sideline products or the food can reach the national standard about the pesticide residues.

The invention relates to stomach-invigorating tea and a preparation method thereof. The stomach-invigorating tea is prepared from components in parts by weight as follows: 40-60 parts of green tea, 5-8 parts of red dates, 6-11 parts of dried ginger, 9-15 parts of dried cinnamon, 3-7 parts of fennel, 2-7 parts of cloves, 5-8 parts of Chinese yams, 6-9 parts of coix seeds, 1-3 parts of ganoderma lucidum and 2-4 parts of polygonatum. The preparation method of the stomach-invigorating tea comprises steps as follows: (1) the red dates, the dried ginger, the dried cinnamon, the fennel, the cloves, the Chinese yams, the coix seeds, the ganoderma lucidum, the polygonatum and other raw materials are put in a drying machine and dried for 5-7 h, and dried raw materials are obtained; (2) the dried raw materials obtained in the step (1) and the green tea are put in a tea processing machine and stir-fried for 35-45 min, and the mixed tea is obtained. The stomach invigorating and nourishing effects of the red dates, the dried ginger, the dried cinnamon, the fennel, the cloves, the Chinese yams, the coix seeds, the ganoderma lucidum, the polygonatum and the like are combined, and the optimal effect of invigorating and nourishing the stomach is achieved.

The invention relates to a loratadine cream and application thereof for preparing a medicine for treating inflammation and pruritus caused by mosquito bite, belonging to the technical field of medicines. The loratadine cream has the characteristics of small irritation on skink, high transdermal adsorption speed, inflammation resistance, strong itching activity, obvious curative effect, no adverse reaction and simple preparation process, is prepared from a small quantity of raw materials, and is suitable for industrial production.

The present invention relates to an environment-friendly hot melt adhesive, the hot melt adhesive comprises the following components in part by weight: 80-95 parts of resin, 13-17 parts of dioctyl phthalate, 18-21 parts of attapulgite, 12-16 parts of pentaerythritol ester, 3-4 parts of ferrocene, 3-7 parts of antioxidant TBM-6, 1-4 parts of mica powder, 1-3 parts of benzoin, 6-9 parts of microcrystalline wax, 1-3 parts of paraffin oil, 2-6 parts of magnesium oxide powder, 3-6 parts of angelica oil, 15-18 parts of clay, 4-5 parts of glass powder, 6-8 parts of diatomite and 10-15 parts of precipitated barium sulfate. The hot melt adhesive has the advantages of less preparation materials, low preparation cost, no any environmental pollution components, no environmental pollution after peeling when in use, and good environmental protection performance.

The invention discloses a method for preparing a self-sustained silicon nanowire array and belongs to the technical field of the preparation of nanometer materials. The method comprises the steps of: fixing a silicon-containing material via metal nets and metal wires to form an electrode covered by the metal nets, then putting the electrode into molten salt at a temperature of 600-1100 DEG C, and exerting a 1.7-2.5V bath voltage onto the electrode which is a carbon-containing electrode for deoxidization in inert atmosphere or under vacuum; reacting and then taking out the electrode, cleaning and peeling to acquire the self-sustained silicon nanowire array. The length of the self-sustained silicon nanowire array can be adjusted through the thickness of the selected material and the reaction time. The nanowire array is formed by crystalline silicon nanowires, and particularly, the nanowires are transversely connected and have a definite range of strength and the structure can remain stable without being supported by any carrier. By adopting the method disclosed by the invention, the self-sustained silicon nanowire array can be rapidly prepared with low cost, and the length of the self-sustained silicon nanowire array can be adjusted. Thus, the method disclosed by the invention is suitable for mass production.

The invention relates to the technical field of membrane separation, and discloses a montmorillonite modified polyvinyl chloride flat plate hyperfiltration membrane and a preparation method thereof. The modified montmorillonite hydrophilic modified polyvinyl chloride is used for preparing membrane forming liquid; the montmorillonite modified polyvinyl chloride flat plate hyperfiltration membrane is obtained through defoaming, coating and solidification separation. The membrane forming liquid is prepared from the following ingredients in percentage by mass: 10 to 20 percent of polyvinyl chloride, 0.3 to 2 percent of modified montmorillonite, 3 to 7 percent of polyethyleneglycol and the balance N,N-dimethyl acetamide solvents. The hyperfiltration membrane prepared by the method provided by the invention has high stability, and has high flux and retention rate on oil-containing sewage.

The invention discloses a transparent nylon material and a preparation method thereof, and the preparation raw materials of the transparent nylon material comprise the following components in percentage by mass: 50-80% of a component A, 5-25% of a component B, 5-25% of a component C and 0.01-2% of a catalyst, wherein the component A is a prepolymer prepared from aliphatic branched-chain-containing long-chain diamine and aliphatic long-chain dicarboxylic acid according to a molar ratio of 1: 1, the component B is a prepolymer prepared from para-aromatic diamine and aromatic dicarboxylic acid according to a molar ratio of 1: 1, and the component C is a lactam compound. The catalyst is selected from at least one of hypophosphite, titanium dioxide and vanadium pentoxide. As the benzene ring of the prepolymer B destroys the regularity of a macromolecular chain, a fine and uniform crystal structure is favorably formed, the light transmittance of the product is improved, the prepolymer A belongs to aliphatic transparent polyamide, and the stability and the chemical corrosion resistance of the product are effectively improved by combining the stable benzene ring structure of the prepolymer B.

The invention discloses a preparation method of super-hydrophobic sponge for adsorbing an organic solvent. The preparation method comprises the steps: placing silica particles into a trihydroxymethylaminomethane buffer solution with the pH value of 7.8, and carrying out ultrasonic treatment and standing; then, sequentially adding a tannic acid solution and a silver nitrate solution into the solution; soaking polyurethane sponge into the mixed solution, carrying out stirring at room temperature for 2 h, taking out the polyurethane sponge, cleaning the polyurethane sponge several times by usingdeionized water, and then, cleaning the polyurethane sponge several times by using ethanol to obtain polyurethane sponge of which the surface has a micronano structure; and placing the treated polyurethane sponge into an ethanol solution having the volume concentration of 1:1000 and containing 1H,1H,2H,2H-perfluorododecanethiol, carrying out stirring at room temperature for 12 h, taking out the polyurethane sponge, cleaning the polyurethane sponge several times by using ethanol, and drying the polyurethane sponge to finally obtain super-hydrophobic polyurethane sponge of which the water contact angle is larger than or equal to 150 DEG. The preparation method is simple and convenient in preparation process and mild in conditions, and the regulation of hydrophobic property of the super-hydrophobic sponge can be realized by changing the concentration of a silica solution in a preparation process.