2470 results about "Zinc Acetate Dihydrate" patented technology

A catalyst for synthesizing vinyl acetate from acetylene and acetic acid is prepared from activated carbon, zinc acetate and alkaline bismuth carbonate in mass ratio of 100: (27-40): 0.026 by excessive solution dipping method.

The invention provides a preparation method of a high-efficiency catalyst for synthesizing vinyl acetate by an acetylene method. The oxidant is used to oxidize the surface of activated carbon used as a catalyst carrier to change the oxygen-containing functional groups on the surface of the activated carbon and improve its original pore structure, thereby effectively improving the loading capacity of the active component zinc acetate and significantly improving the catalyst efficiency. The invention has the advantages of cheap and easy-to-obtain raw materials, simple operation, high loading capacity of catalyst active components, good activity and long service life.

The present invention discloses the preparation process of CdSe/CdS, CdSe/ZnS and other II-VI type core-shell quantum dot. The CdSe/CdS and CdSe/ZnS core-shell quantum dot are prepared with cadmium acetate, zinc acetate or other inorganic compound, instead of Cd(CH3)2, Zn(CH3)2 or other inflammable, detonable and expensive organic metal compound, as material. The prdouct has excellent single dispersivity, improved fluorescent property, high quantum yield, high stability, and may be used widely as the fluorescent mark for biological detection and analysis.

The invention discloses an aluminum-doped zinc oxide film coating and nano-rod array material as well as a preparation method thereof. The aluminum-doped zinc oxide film coating and nano-rod array material comprises the components based on the weight percentage: 95-99% of zinc oxide and 1-5% of aluminum-doped quantity. The preparation method adopts a sol-gel method, zinc acetate and aluminium nitrate are added with organic solvent according to the proportion for heating under reflux; the mixed solution is then added with certain quantity of stabilizing agent for water bath heating at certain temperature and added with organic reagents such as absolute ethyl alcohol, methanamide or methanol and the like to prepare sol according to the need; after that, a spin coating method is adopted to form a film, and the aluminum-doped zinc oxide nano film coating material can be obtained by the processes such as drying, pretreating, repeatedly spin coating, annealing, secondary annealing under the atmosphere of hydrogen and nitrogen and the like; then, a hydrothermal method is adopted for preparing highly oriented aluminum-doped zinc oxide nano-rod and array thereof. The invention has high utilization rate of the raw materials, low cost and simplified preparation technique, and can control the performance and the particle size of the material from the molecular design level.

A method of preparing nanostructured zinc oxide layers on a substrate by chemical spray pyrolysis at moderate deposition temperatures from 350° C. to 600° C. is disclosed. An aqueous or aqueous alcoholic solution comprising zinc chloride or zinc acetate as precursors is prepared and sprayed onto the preheated substrate so that the precursor reacts to form zinc oxide layer on the substrate. Thiourea or urea may be also added to the solution. Glass, silicon, or metal oxide covered glass can be used as the substrate.

The invention discloses a stabilized chlorine dioxide disinfection solution and its preparation method. The disinfection solution is composed of component A and component B, wherein component A is stabilized sodium chlorite solution consisting of chlorite, a stabilizing agent, a complexing agent, a pH stabilizing agent, and the balance a pH conditioning agent and water; component B is an activating agent, which can be at least one of citric acid and hydrochloric acid. The product of the invention has the advantages of stability, long shelf-life, and a validity period up to 2 years, and can be used as a disinfectant. The disinfection solution of the invention has simple process and convenient usage. In the invention, the original mode of pH value adjusting by acid is changed, and zinc chloride and zinc acetate are employed to remove sodium hydroxide in raw materials and reach the purpose of pH value adjusting. Simultaneously, zinc acetate and sodium hydroxide generate no amphoteric substance, and the actual operation is easier.

The invention relates to a process for synthesizing vinyl acetate catalyst through an acetylene method. The process which treats active carbon as a carrier and zinc acetate as an active component comprises the following steps: adding zinc acetate to water to prepare an aqueous solution of the active component, immersing active carbon in the aqueous solution of the active component to make the zinc acetate component be dipped on the active carbon, drying the dipped active carbon in a drying tower to obtain the acetylene method vinyl acetate catalyst, galvanizing the dipped active carbon in the drying tower to heat the active carbon in order to complete the drying of the catalyst. Compared with the prior art, the process provided in the invention has the advantages of high activity, long life and the like.

The invention provides a ZnO/SnO2 nano composite gas-sensitive material with a flower-shaped grading structure. The ZnO/SnO2 nano composite gas-sensitive material is prepared by the following steps: dripping a sodium hydroxide water solution into an ethanol solution of cetyl trimethyl ammonium bromide and stannous chloride dihydrate under electromagnetic stirring; after dripping, preparing a precursor solution by the continuous electromagnetic stirring; adding the precursor solution into a reaction kettle, reacting at 130 DEG C; carrying out centrifuging on a reactant, washing and drying to obtain a flower-shaped stannous oxide sacrifice template; adding the flower-shaped stannous oxide sacrifice template into a zinc acetate solution; agitating and carrying out ultrasonic treatment; removing a solvent to obtain a ZnO/SnO2 precursor; and carrying out heat preservation on the ZnO/SnO2 precursor for 2-4 hours in an air atmosphere of 700 DEG to obtain the composite gas-sensitive material. According to the ZnO/SnO2 nano composite gas-sensitive material with the flower-shaped grading structure, the controllable preparation of the composite gas-sensitive material on the appearance and components can be realized; the mass percent content of zinc oxide in the composite gas-sensitive material is 5%-15%; a flower shape is assembled by sheet-shaped tin dioxide and zinc oxide nano particles; the ZnO/SnO2 nano composite gas-sensitive material has a good gas sensitive performance and has a wide application prospect in the aspect of manufacturing a novel high-efficient gas sensor.

The invention relates to a method for preparing zinc oxide nano-rods array membrane with controllable wettability, which belongs to a field of nano materials. The invention uses zinc acetate sol to prepare adhesive membrane on a basement through spinning technics; a crystal membrane is generated after annealing; the basement is positioned in mixed precursor solution of zinc nitrate and hexamethylene tetrammine and is hydro-deposited for 3-5 hours under a temperature ranging from 90 DEG C to 100 DEG C; the zinc oxide nano-rods array can be prepared on the basement. At the same time, by controlling concentration of the sol, times of spinning, temperature and time of annealing, controllability of the zinc oxide nano-rods array density and controllability of the array wettability can be realized; problem of unsteady wettability of the array can also be overcome.

The invention relates to the field of synthesis of nano-materials and particularly relates to a method for synthesizing a series of Ag:ZnIn2S4 luminescent quantum dots by using a simple and rapid hydrothermal method in one step. Fluorescence is adjustable in the range of 460nm to 830nm, the fluorescent life is relatively long, and the luminescent quantum dots can be applied to water-decomposed hydrogen production under visible light. The method comprises the steps of firstly, mixing and dissolving silver nitrate, indium nitrate, zinc acetate dihydrate and L-cysteine in an aqueous solution, adjusting the pH value of the solution to 8.5 by using NaOH, adding thioacetamide into the solution, carrying out ultrasonic stirring, then, carrying out a hydrothermal reaction for 4 hours at the temperature of 110 DEG C, and carrying out centrifugal drying after the reaction ends, thereby obtaining Ag@ZnIn2S4 nanocrystals of different ratios. Proven by a photocatalytic hydrogen production experiment under the visible light, the prepared composite photocatalyst has good photocatalytic activity.

The invention relates to a preparation method of a single-walled carbon nanotube metal-organic framework in the nanotechnology field, which comprises the following steps: a. mixing 1 weight proportion of dried single-walled carbon nanotube with 50-5000 weight proportions of strong oxidizing acid to be processed by ultrasonic treatment, stirring to react, sucking filtration and washing until the solution is neutral, and obtaining acidulated carbon nanotube after drying; b. adding zinc acetate aqueous solution drop by drop, stirring to react, sucking filtration and washing, dispersing the product in an organic solvent again, sucking filtration once again, and obtaining the product SWNT-MOF-1 after drying; c. mixing the SWNT-MOF-1 and the organic solution to be processed by the ultrasonic treatment, adding the organic solvent solution of an organic ligand, stirring to react, cooling, adding the organic solvent to leach, sucking filtration, dispersing the black products in de-ionized water again, sucking filtration once again, dialyzing the black products, and obtaining the final products after drying. The method is simple and the material with both the perfect structure of the single-walled carbon nanotube and the structure of the metal-organic framework can be obtained.

The invention discloses a ZnO@ZIF-8 core-shell structure microsphere and a preparation method thereof. The core-shell structure microsphere is formed by ZnO and ZIF-8, wherein ZnO is adopted as a core, ZIF-8 is adopted as a shell, the diameter of the spherical ZnO core is 250 to 300 nm, the surface of the spherical ZnO core is a rough surface, the thickness of the ZIF-8 shell is 40 to 60 nm, the ZIF-8 shell is formed by a block-shaped polygonal body, and the specific surface area of each microsphere is more than or equal to 300m<2>/g. The preparation method comprises the following steps: adding dihydrate zinc acetate into diethylene glycol at a weight ratio of (3.5-7.5): 250 to obtain a mixture, refluxing the mixture for at least 1h under the temperature of 140 to 180 DEG C to obtain a reaction liquid, after the reaction liquid is cooled to the room temperature, sequentially carrying out solid-liquid separation, washing and drying treatment on the reaction liquid to obtain spherical ZnO, then adding the spherical ZnO into 3.16 to 4.16 mol/L of 2-methylimidazole solution at a weight ratio of (0.008-0.012): (2.5-2.9) to obtain a mixed solution, standing and aging the mixed solution for 8 to 60 minutes, sequentially carrying out solid-liquid separation, washing and drying treatment on the mixed solution to obtain a target product. The ZnO@ZIF-8 core-shell structure microsphere is good in dispersing property and relatively large in specific surface area and can be widely applied to the fields such as gas storage, separation and catalyzing.

The invention discloses a silver nanoparticle-modified zinc oxide nanorod array, a preparation method thereof and application thereof. An array consisting of zinc oxide nanorods is arranged on a substrate; the length of the zinc oxide nanorods is 1 to 1.4mu.m; the diameter of the rods is 50 to 60nm; the size of silver nanoparticles at the top ends of the rods is 100 to 120nm; the size of the silver nanoparticles on the surfaces of the rods is 25 to 35nm; the distance between the particles is less than or equal to 10nm; the distance between the silver nanoparticles at the top ends of the adjacent rods is 40 to 60nm; and the distance between the silver nanoparticles on the surfaces of the adjacent rods is 25 to 35nm. The method comprises the following steps of coating a zinc acetate ethanol solution on the substrate; after drying the substrate, cleaning, dispersing and thermally decomposing the substrate to obtain a substrate on which a zinc oxide seed layer is coated; performing electro-deposition on the substrate coated with the zinc oxide seed layer in a zinc nitrate ammonia complexation solution to obtain a substrate with the zinc oxide nanorod array; and performing silver ion sputtering on the substrate in an ion sputter to obtain the target product. The silver nanoparticle-modified zinc oxide nanorod array can serve as an active substrate of SERS (Surface Enhanced Raman Scattering) and is used for measuring rhodamine 6G or polychlorinated biphenyl 77.

The invention discloses a method for preparing zinc sulfide nanospheres, which comprises the following steps: 1) preparing a solution A by dissolving zinc acetate and a surfactant in deionized water, and preparing a solution B by dissolving thioacetamide in deionized water; and 2) mixing the solution A and the solution B to obtain a reaction solution, reacting the reaction solution in a water bath and obtaining zinc sulfide nanospheres, wherein the particle size of the zinc sulfide nanospheres can be kept between 90 and 120 nanometers by controlling reaction conditions. The method has the characteristics of readily available raw material, simple equipment, easy operation, high efficiency, high speed and the like; and the prepared zinc sulfide nanospheres with regular form, high dispersity, controllable size, high yield and high stability are suitable for mass industrial production. The zinc sulfide nano material prepared by the method has a great application prospect in fields of fluorescent lamps, field emission flat-panel displays, light-emitting diodes, electroluminescent devices, solar cells and the like.

The invention relates to a preparation method of a ZnO nanometer powder with a flaky and vesicular structure, comprising the following steps: firstly, to place a liquid mixture of a zinc acetate solution and a carbamide solution into a microwave oven to react 30 to 60 minutes under temperature of 60 to 95 DEG C and power of 500 to 900W; secondly, separation, to scour and dry the turbid solution to obtain a precursor of basic zinc carbonate; thirdly, to roast the precursor of basic zinc carbonate 1.5 to 3 hours at a temperature of 400 to 600 DEG C to obtain the vesicular ZnO nanometer powder. The invention is characterized in that the prepared ZnO powder is white and belongs to the hexagonal system. The product by the preparation method has the advantages of high rate of specific surface area, high purity and good quality.

The invention discloses an ion nutritional liquid fertilizer and a preparation method thereof. The fertilizer comprises the following components by weight parts: 15-35 parts of potassium hydroxide, 5-15 parts of germanium dioxide, 1-5 parts of sodium selenite or sodium selenate, 5-15 parts of zinc acetate or zinc sulfate, 1-5 parts of chromic chloride, 2-8 parts of ammonium metavanadate, 15-40 parts of organic acid, 20-50 parts of amino acid, 10-20 parts of boric acid, 2-10 parts of urea and 500-900 parts of water, wherein the organic acid is citric acid or acetic acid and the amino acid is compound amino acid or monomer amino acid. The preparation method comprises the following steps of: taking the components of the fertilizer by weight parts; dissolving germanium dioxide into the potassium hydroxide; adding the organic acid, and then performing acidizing chelation reaction for 5-10 hours; adding the sodium selenite, zinc acetate, amino acid, boric acid, chromic chloride, ammonium metavanadate, urea and water; reacting for 5-10 hours; and filtering and removing slag, thereby obtaining the ion nutritional liquid fertilizer.

The invention relates to a process for preparing nano zinc oxide wherein zinc acetate alcoholysis reaction is employed to couple the formation of zinc oxide and esterification reaction between acetates and ethanol, thus obtaining nana zinc oxide powder with double dispersibility.

The invention discloses a polyester fabric hydrophilic antistatic agent which consists of the following components by weight percentage: 8 to 18 percent of DMT, 38 to 48 percent of glycol, 16 to 26 percent of polyoxyethylene, 6 to 16 percent of zinc acetate, 4 to 14 percent of diantimony trioxide and 3 to 8 percent of triphenyl phosphate, and the total amount of all the components is 100 percent. Interchange esterification and condensation polymerization are carried out to all the components so as to obtain the hydrophilic antistatic agent. The hydrophilic antistatic agent is adopted to prepare fabric-washing treatment liquid, and during the process the magnesium chloride hexahydrate is added and a two-dipping-two-rolling method is adopted to deal with the polyester fabric, and then the fabric is dried so as to complete the later finishing to the terylene fabric. The hydrophilic antistatic agent of the invention has stable antistatic capability, good washing resistance and low price. Adopting the antistatic agent to the later finishing of dacron can save the baking process of applied process so as to reduce energy cost and enhance the wearing property of polyester fiber and corresponding fabrics so as to meet the simulation requirement to polyester fabrics of costume fabric market.

The invention relates to a preparation method of recycled polyester for the field of chemical recycling of waste polyester. A dihydric alcohol titanium alkali metal coordination compound which can be dissolved in glycol is used as a catalyst for catalyzing depolymerization of glycol of a waste polyester material and a re-polymerization process of a depolymerization product. The catalyst has relatively high catalytic activity to depolymerization of glycol of waste polyester and the re-polymerization process of the depolymerization product so as to avoid adverse effects on re-polymerization because of catalyst residues after catalytic alcoholysis by soluble catalysts such as zinc acetate, zinc-containing metal salts and halogen-containing ionic liquids and the like, so that the catalyzing efficiency is low due to complex mass transfer in a catalytic process of a solid heterogeneous catalyst. By adopting the preparation method of the recycled polyester, the catalyst which does not needed to be removed from the depolymerization product can be used for re-polycondensation, so that the separating and purifying cost of the depolymerization product is greatly lowered and smooth operation of the re-polymerization process and the quality of the recycled polymer are ensured, thereby providing probability for continuous chemical recycling of PET (polyethylene terephthalate).

A composition of a water-repellent agent has a solvent and a solute. The solvent is water. The solute is dissolved in water and has isocyanate-acryl, non-ionic fluoro-acryl, 4,4-dipheylmethane diisocyanate, zinc acetate and polyethylene wax. Isocyanate-acryl has a concentration in a range of 10˜40 gram in per liter of the water-repellent agent (i.e. 10˜40%). Non-ionic fluoroacryl has a concentration in a range of 80˜150% t. 4,4-dipheylmethane diisocyanate has a concentration in a range of 5˜12%. Zinc acetate has a concentration in a range of 1˜20%. Polyethylene wax emulsion has a concentration in a range of 1˜40%. Therefore, a fabric treated with the present invention has good waterproof ability, widely enhanced color fastness in light and improved tear-resistance strength at the same time.

This invention is concerned with packaged food products which contain specific combinations of functional additives aimed at addressing specific health indicators, in particular flatulence, gastro-intestinal health, stress and immune system responsiveness, in pet animals. There is provided a commercially packaged mammal pet food product that includes a manufactured, shelf-life stable food substrate and a combination of functional additives. The functional additives include at least one non-palatable plant-based remedy and/or dietary fiber source that are present to strengthen and/or maintain a specified health indicator of a mammal pet animal. The food product is portioned and packaged with the functional additives being present in predetermined concentrations and amounts sufficient to be effective in achieving said indications on regular feeding of the pet animal with said food product. The food substrate is present in a proportion sufficient to mask the flavor and/or odor of the non-palatable additive and is made-up of a unique combination of materials that are able to be processed at lower temperatures to preserve the natural botanical functional additive's activity. Functional additives intended to address dietary flatulence problems include a combination of Yucca extract, charcoal and salts of zinc, such as zinc acetate. Functional additives to promote or maintain gastro-intestinal health include a combination of L-glutamine, D-glucosamine sulphate, sugar beet pulp, slippery elm. Functional additives to strengthen or maintain a pet animal's natural body defenses include a combination of vitamin E, vitamin B complex, primrose oil vitamin C and Marigold meal. Functional additives to promote or maintain reduction of stress and/or improved behavior of a pet animal include a combination of Valerian root extract, Kava root extract, vitamin B complex and magnesium salt.

The invention belongs to the technical field of the preparation method of a nano material, in particular to a preparation method of a ZnSe-to-Cu quantum point. The preparation method comprises the following steps that: (1), under the protection of inert gases, Se powder and sodium borohydride are dissolved in distilled water, the amount of substance of the sodium borohydride is equal to or greater than that of the Se powder, the mixture is heated to be completely dissolved, and a Se solution with the Se content of 0.01 to 0.75mol/L is manufactured; (2), zinc acetate and copper acetate are dissolved in the distilled water, the mole number of copper ions does not exceed 15% of that of zinc ions, thioglycollic acid is added into the mixture, the pH is regulated to 8 to 13, and a Zn solution with the Zn content of 0.01 to 0.1mol/L is manufactured; and (3), the manufactured Se solution is injected into the manufactured Zn solution, the mixture reacts for 1 to 5 hours in oil bath at 90 to 150 DEG C and is cooled to room temperature, ZnSe-to-Cu quantum point water solution is obtained, then isopropanol is added into the ZnSe-to-Cu quantum point water solution, and a ZnSe-to-Cu quantum point is obtained by centrifugation and separation. The invention has the beneficial effects that cheap raw materials are adopted to substitute an expensive and dangerous organic metal precursor, which is green and environment-friendly, and the preparation cost is reduced; and the water solution is used as a reaction solvent, thus the reaction temperature is reduced and the operation is simple and safe.

The invention discloses a reticulate nanopore zinc-oxide micron hollow sphere and a preparation method thereof. The hollow sphere of the invention comprises the following materials: the surface of the zinc-oxide micron hollow sphere is provided with reticulate nanopore, wherein, the diameter of the hollow sphere is 1 to 10mum and the aperture of the nanopore is 50 to 100nm; the method of the invention comprises a liquid-phase chemical method, particularly (a) according to the mole ratio that zinc salt: chelating agent: sodium citrate: water is equal to 1:(0.5-1.5):(0.05-0.15):(50-150), the materials are weighted, then put into a vessel, stirred, dissolved and kept warm for three hours at the temperature of 70 to 100 DEG C under the sealing state to obtain a product; (b) the obtained product is filtrated, washed more than one time and heated for 1 to 3 hours at the temperature of 300 to 500 temperature, and the reticulate nanopore zinc-oxide micron hollow sphere is obtained; the zinc salt is zinc nitrate or zinc acetate or zinc chloride or zinc sulfate, and the chelating agent is urea or ammonia or hexamethylene tetramine or ammonium hydroxide. The hollow sphere can be widely applied to the fields of drug transportation, chemical reaction carrier, cosmetics, coating material, catalytic and photocatalysis material, etc.