33results about How to "Unique porous structure" patented technology

The invention discloses a method for preparing a self-supporting graphite-like porous amorphous carbon film, which comprises the following steps: S1: ultrasonically cleaning the metal nickel sheet substrate, drying it and placing it in a tube furnace; Inert gas is passed into the tube furnace; S3: the temperature of the tube furnace is raised to 600°C-720°C, hydrogen is passed into the tube furnace, and the metal nickel sheet lining is heat treatment at the bottom; S4: feed hydrocarbons into the tube furnace, so that after the heat treatment, the metal nickel sheet substrate catalyzes the cracking of hydrocarbons and grows an amorphous carbon film; S5: heats the tube furnace The temperature is lowered, and the nickel sheet grown with the amorphous carbon film is soaked in an etching solution to corrode the substrate nickel sheet to obtain a self-supporting graphite-like porous amorphous carbon film. The preparation method of the invention does not require high ambient temperature, and the prepared amorphous carbon film has a porous structure and a self-supporting structure, and can be easily transferred to any substrate.

The invention relates to a long-acting organic compound fertilizer and a manufacturing method thereof, which belongs to the manure field. By taking sludge in a municipal sewage treatment plant as main raw material, adding zeolite, urea, ammonium diacid phosphate, potassium chloride and sodium silicate, then being stirred and mixed with the urea, the ammonium diacid phosphate and the potassium chloride after sludge compression, zeolite drying, stirring and mixing, natural air drying or kiln drying and grinding, and spraying the sodium silicate so as to granulate, dry, disinfect and sterilize the mixture, a product is then produced. The long-acting organic compound fertilizer and the manufacturing method solve the problem of land occupation of the sludge in the sewage treatment plant and secondary pollution, and realize the harmless disposal and resource utilization of the sludge. The fertilizer ensures that crops has good growth power, high plants, more grains, stronger lodging resistance and obvious stimulation effect and ensures that the quality of agricultural products is improved. Furthermore, the fertilizer can increase the ability of reserving nutrients in soil, can modify acid or saline alkali sandy soil, can improve soil aggregate structure, can keep fertilizer efficiency and resist crop diseases.

The invention relates to a shredded dried bean curd with strong juice-absorbing ability and a preparation method thereof. The shredded dried bean curd comprises the following raw materials in parts by weight: 9-15 parts of soybean protein powder, 8-15 parts of vegetable oil, and 3-9 parts of starch , 50-70 parts of ice-water mixture, 10-20 parts of borneol. The preparation method includes: hydrating soybean protein powder and ice water; emulsifying by adding vegetable oil; and coagulating by adding starch, TG enzyme, edible gum and borneol. The formula of the present invention increases the amount of ice compared with the protein dried tofu processed by the ordinary method, and the added amount of ice destroys the cross-linking effect between protein molecules during processing, rearranges the structure of protein molecules, and forms a unique porous structure.

The present invention relates to selenium or tellurium functionalized covalent organic framework material and its preparation method and application; using aldehyde amine condensation Schiff base reaction: using selenium or tellurium bond bridged diphenyl compound as building block, and another After dissolving and dispersing a kind of building block triglyceraldehyde or 1,3,5-triaminobenzene in the mixed solution of dioxane and mesitylene, under the protection of nitrogen and catalyzed by acetic acid, react at 80-150°C After 6-72 hours, a solid powder is formed, which is washed with tetrahydrofuran or acetone and dried in vacuum to obtain a selenium or tellurium functionalized covalent organic framework material. The reaction equation is shown below. The material has a porous structure of a covalent organic framework and a high specific surface area, which not only has a high drug loading capacity for anti-tumor hydrophobic drugs such as doxorubicin or paclitaxel, but also can decompose and release the loaded drugs in a redox environment; It can be used for the enrichment and removal of platinum ions in platinum-containing wastewater through the coordination of selenium or tellurium with platinum.

The invention belongs to the technical field of material chemistry, and in particular relates to a bonding construction method of a novel silver phosphate-based composite catalytic unit. First, a liquid film transport system is established combined with the regulation of small organic molecules to obtain a silver phosphate-based ordered porous structure with a regular and orderly shape and a large specific surface area, and a layer of nanometer-thick sharpened porous structure is obtained on the surface using molecular bonding technology. Titanium-type titanium dioxide constructs a silver phosphate / titanium dioxide heterostructure composite microsystem with compact structure and high degradation efficiency. The invention fully utilizes the excellent photocatalytic activity of silver phosphate, and uses visible light as a light source to rapidly degrade the organic pollutants on the surface of the silver phosphate-based composite microsystem. The new silver phosphate-based composite catalytic unit constructed by this method not only has an orderly structure and high degradation efficiency, but also greatly reduces the amount of silver phosphate used, effectively reduces the cost of use, and provides a new method for the treatment of organic pollutants. efficient catalyst.

The invention belongs to the field of lithium-ion battery separators, and relates to a preparation method for lithium-ion battery separators with high safety and high energy density. The separator is composed of special engineering plastic polyphenylene sulfide. The invention discloses the separator The preparation method is a thermally induced phase separation method using a two-component diluent, melt-blending the two-component diluent and polyphenylene sulfide, quenching, crushing into powder, pressing it into a film with a flat vulcanizing machine, and finally using The extractant is dried after removing the diluent to obtain a polyphenylene sulfide diaphragm. The method for preparing the diaphragm of the invention has simple process, low production cost and easy large-scale production. The polyphenylene sulfide separator involved in the present invention has the characteristics of large porosity, high temperature resistance, high mechanical strength, good wettability of electrolyte, etc., and is of great significance to the development of lithium-ion batteries with high safety and high energy density.

The invention discloses application of oak barks on filter sticks of cigarettes. According to the application, low-cost oak bark powder is added in the filter sticks of the cigarettes, the content of tar in the smoke of the cigarettes can be effectively reduced, the oak barks are safe and non-toxic, and moreover, a smoker has a high smoking feeling.

The invention discloses a preparation method of a platinum-tungsten catalyst co-modified with Cu and Al supported on activated carbon and application. The preparation method comprises the steps that an ammonium metatungstate solution is firstly added into activated carbon dispersion liquid, then a certain amount of aqueous chloroplatinic acid solution is added, and then a nitrate precursor is added in a certain proportion, and after reaction is completed, drying, calcining and reducing are conducted to obtain the catalyst, that is, Cu-Al-Pt-WOx / AC. The preparation method is simple, the catalyst needed can be obtained by one-time impregnation method, an carrier is cheap and easy to be obtained, cost is greatly reduced, recycling effect is good, the obtained catalyst is used for hydrogenation reaction of glycerin, reaction time is short, the reaction is economic, effective, and environment-friendly, hydrogen consumption is low, products are easy to be separated, high conversion rate of glycerol and 1,3-propanediol selectivity under relatively mild reaction conditions are high, production conditions are improved, and quality of corresponding products is improved.

A method for preparing a seed coating agent comprises the following steps that (1) corn straw is pre-processed; (2) an acrylate solution is prepared; (3) the seed coating agent is prepared, wherein an initiator of potassium persulfate and a crosslinking agent of N,N'-methylene bisacrylamide are added into water and dissolved and then are mixed with the stand-by acrylate solution obtained in the step (2), the obtained mixture is stirred evenly, then N,N,N',N'- tetramethyl ethylenediamine aqueous solution with the concentration of 0.198mol / L is added into the mixture, then the mixture is evenly stirred, after air bubbles of a system disappear, the stand-by corn straw pre-processed in the step (1) is added, the mixture is stirred evenly and then the seed coating agent is prepared. The method does not require heating and can be conducted under a normal temperature condition, raw materials are low in price and easy to obtain, the production cost is low, the process is simple, and the method is convenient to operate and suitable for being used for large-scale industrial production. Experiments prove that the water absorption amount of the seed coating agent can be forty times of the mass of the materials comprising seeds at most.

The invention discloses a method for preparing porous dandelion-like Pd nanodendrites, the obtained material and its application as an oxygen reduction cathode catalyst. The method uses N,N'-methylenebisacrylamide (MBAA) as a complex Agents, structure-directing agents and reducing agents, the metal precursors were quickly reduced into porous dandelion-like Pd nanodendrites by one-step static reduction method. The porous dandelion-like Pd nanodendrite prepared by the method of the invention has the advantages of regular shape, ultra-fine particle size, high electrocatalytic activity, etc., and exhibits high catalytic activity and stability as an oxygen reduction cathode catalyst. The preparation method of the invention is simple, efficient and universal.