32results about How to "Easy to scale up experiments" patented technology

This invention relates to a method to prepare mezoporous empty-centered titanium dioxide powders, which comprises following steps: titanium chloride is made into hydrosol with pure water, diluted and introduced into a spray dryer for spray drying. The subsequent product is empty-centered ball-shaped powder made up of nanosized titanium dioxide particles and the preceding titanium chloride is titanium tetrachloride or titanium trichloride. The titanium dioxide particles prepared in this invention all have mezoporous empty-centered ball-shaped structure and the empty-centered wall is made up of nanosized titanium dioxide particles and mezopores, on the surface of which titanium atoms possess a fraction of as high as 70%. As only titanium tetrachloride is adopted as precursor and no other reagent is necessary, the product is highly pure and has excellent photocatalytic properties. This method has the advantages of high yield, low cost, easily controlled technique and convenience for magnification experiment. Besides, there are not severe requirements for facilities and this method is suitable for industrial production.

The invention provides a ferroferric oxide micro-nano material as well as a preparation method and application thereof. The preparation method comprises the steps of dissolving potassium ferricyanide into a mixed solvent of water and glycerin, and preparing a three-dimensional self-assembling spherical structure based on ferroferric oxide by virtue of a one-time solvothermal method, wherein the core of the spherical structure is formed by nanoparticles, the surface of an outer layer of a sphere is formed by polyhedral nanosheets through embedding and interweaving, and the diameter of the sphere is 1-3 microns. Compared with the prior art, the preparation method has the advantages that a synthetic method is extremely simple, the cost is low, the preparation is finished by one step, the operation is simple, the reproducibility is high, and the three-dimensional self-assembling spherical structure can be obtained under the action of glycerin. The ferroferric oxide micro-nano material has the characteristics of uniform size, high purity, low cost, easiness in industrial production and the like. The ferroferric oxide micro-nano material prepared by virtue of the preparation method presents excellent performance in the aspect of energy storage of lithium ion batteries and has potential practical application values.

The invention discloses a preparation method of a Fe3O4-Co3O4 porous magnetic composite material. The preparation method comprises the following steps of (a) blending, (b) heating, (c) drying and (d) calcining. In comparison with the prior art, the invention has the following advantages: (1) other oxides are not found in the product, and the product is a heterogeneous material and has uniform particle size, special morphology, high activity, simple one-step synthesis method, large apparent density, and good magnetic performance; (2) the method has high yield, low cost, short production flow and is convenient in scale-up experiment; (3) the method is simple and controllable, and has low demand for equipment, so that the method is suitable for industrial production; and (4) the magnetic material with a heterogeneous oxide core-shell structure provided by the invention can be effectively applied to lithium-ion and fuel cell materials.

The invention relates to a method for preparing titanium dioxide of rutile phase power, which includes the following steps: prepare raw material of titanium tetrachloride to be hydrosol, which is dilute after hydrolyze, heat it to be hydrolyze, generating deposit, filter the deposit which is then washed by water and dried, obtaining the titanium dioxide of rutile phase powder. Its advantages mainly includes: (1) the crystal structure of nanometic power is rutile phase; (2) the titanium dioxide of rutile phase power is average, with good dispersibility and high level of crystallization; (3) only use titanium tetrachloride as crystallization, without any other agent and crystal; (4) it has high productivity, low cost, easy-controllable technical course and is easy to magnify experiment; (5) has fewe requirements for the equipments, suitable for industrialized production.

The present invention is preparation process of 1, 8-naphthalene diamine homopolymer. The chemical oxidation process of preparing poly1, 8-naphthalene diamine includes the following steps: dissolving 1, 8-naphthalene diamine in organic solvent, adding water solution of oxidant into the monomer solution to react, and post-treatment. The process has water or organic solvent as polymerization medium, and is simple, and high in 1, 8-naphthalene diamine homopolymer yield up to 98.0 %. The present invention provides new way of preparing 1, 8-naphthalene diamine homopolymer.

The invention relates to a phase-change energy storage microcapsule with a polyurethane modified silicone resin as the shell material and a preparation method thereof, specifically disclosing that the preparation method includes the following steps: (1) uniformly mixing the monomers for forming the silicone resin, adding The catalyst is prepolymerized to obtain a polysiloxane prepolymer; (2) the urethane polyprepolymer is added to (1) to react to obtain a polyurethane modified silicone resin prepolymer; (3) the core material and the shell (4) preparing an aqueous solution of surfactant; (5) mixing the core material and shell material prepolymer mixture and the aqueous solution of surfactant and Emulsify to obtain an emulsion, add a catalyst until the reaction is complete, separate and dry to obtain polyurethane-modified silicone resin shell phase-change energy storage microcapsules. The method is green and pollution-free, and the operation is simple. The obtained microcapsules have smooth surface, good compactness, adjustable phase transition temperature, controllable particle size, good heat resistance and high phase transition enthalpy.

The invention provides a preparation method for a three-dimensional manganese dioxide aerogel, belonging to the field of preparation of catalysts. The three-dimensional manganese dioxide aerogel is doped with elemental silver and has a general chemical formula of Ag-MnO2, wherein the addition amount of the elemental silver, in terms of the total mass of silver doping the manganese dioxide aerogel, is greater than 0 and no more than 50% by mass. The invention further provides a preparation method for the three-dimensional manganese dioxide aerogel. The three-dimensional manganese dioxide aerogel prepared by using the preparation method has the advantages of no residues of a manganese precursor and organic modification molecules, high mechanical strength, large specific surface area and good electrical conductivity; and the preparation method is simple and easy to realize scale-up experiments, so aerogel with a greater size can be prepared and high electrocatalytic activity is obtained.

The invention discloses a nanometer titanium dioxide-coated iron oxide yellow composite material and a preparation method thereof. The nanometer titanium dioxide-coated iron oxide yellow composite material is prepared by coating nanometer titanium dioxide on the surface of iron oxide yellow serving as a carrier, wherein the nanometer titanium dioxide belongs to an anatase phase; the composite material is in a long stick shape, the longitudinal length is between 0.5 and 1.5 mu m, and the transversal particle size is between 140 and 160 nm; and the molar ratio of Fe to Ti in the composite material is 0.5 to 1.5:1. The nanometer titanium dioxide-coated iron oxide yellow composite material prepared by the method has the advantages of uniform coating of nanometer powder, high dispersibility, high performance and wide application field. The preparation method has the advantages of high yield, low cost, easily controllable process procedure and suitability for industrialized production.

The present invention discloses double-liquid phase hydrolysis process of preparing nano zirconia powder in the field of chemical material preparation. Hydrolysis of zirconium oxychloride or zirconyl nitrate is completed in double-liquid phase, i. e., via water-oil azeotropic process; the hydrolysis product HCl or HNO3 is eliminated; and through further stoving and roasting treatment, homogeneous and dispersed spherical nano zirconia powder of about 10 nm size is produced. The product is used in information ceramic and structural ceramic and as chemical material. The technological process is simple, easy to operate, high in material utilization and low in power consumption, and may be realized in production line.

The invention provides a copper-based ternary mixed metal oxide hollow nano-material, a preparation method and an application thereof. Compared with the prior art, the preparation method of the copper-based ternary mixed metal oxide hollow nano-material has universality, the product is single in form, uniform in dimension and simple in method. The product purity is high, and the product is free from impurities, low in production cost, short in flow, low in equipment requirement, easy to perform amplification experiment and can realize the industrial production. Moreover, the low-price urea is used as structuring agent of a hollow structure, the grain size of a material is controlled by adjusting ratio of dihydric alcohol and water and dosage specificity of a non-polar surface active agent; the prepared homogeneous copper-based ternary mixed metal oxide hollow nano-material can be applied to restoration of p-nitrophenol, and is quick in reaction speed, high in catalyst efficiency, good in circulating effect, and low in cost.

The invention discloses a preparation method of an iron-doped TiO2 nanotube, comprising the following steps of: preparing titanium tetrachloride into hydrosol, staying until the hydrosol is aged, diluting by adding water so as to obtain a colorless transparent solution; adding ferrite yellow into the colorless transparent solution at room temperature, gradually heating the mixed liquor to the temperature of 80-100 DEG C, followed by constant temperature water bath, uniformly stirring for 1-3 hours to obtain a sediment, washing the sediment, drying and grinding to obtain the iron-doped TiO2 nanotube. The mass ratio of Fe in the added ferrite yellow to Ti in the added titanium tetrachloride is 0.5-1.5: 1. The method provided by the invention has advantages of high yield, low cost, easily controllable process and low requirement on equipment, and is suitable for industrial production; in addition, in comparison with the photocatalytic activity of regular nanometer titanium dioxide materials, the photocatalytic activity of the iron-doped titanium dioxide (TiO2) nanotube prepared in the invention is enhanced.