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1143 results about "Zinc Acetate Dihydrate" patented technology

Zinc acetate is a salt with the formula Zn(O2CCH3)2, which commonly occurs as the dihydrate Zn(O2CCH3)2(H2O)2. Both the hydrate and the anhydrous forms are colorless solids that are commonly used in chemical synthesis and as dietary supplements.

Aluminum-doped zinc oxide film coating and nano-rod array material as well as preparation method thereof

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.
Owner:CENT SOUTH UNIV

ZnO@ZIF-8 core-shell structure microsphere and preparation method thereof

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.
Owner:ANHUI UNIVERSITY OF ARCHITECTURE

Silver nanoparticle-modified zinc oxide nanorod array and preparation method and application thereof

InactiveCN103030095AEliminate the disadvantages of oxidationLow costDecorative surface effectsRaman scatteringPolychlorinated biphenylZinc oxide nanorod sensor
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.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Dacron hydrophilic antistatic agent, preparing method and dacron afterfinish method

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.
Owner:XI'AN POLYTECHNIC UNIVERSITY

Preparation method of recycled polyester

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).
Owner:JIANGSU HENGZE COMPOSITE MATERIALS TECH

Food product and process for manufacturing same

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.
Owner:EFFEM FOODS

Preparation method of ZnSe-to-Cu quantum point

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.
Owner:UNIV OF JINAN

Reticular nano hole zinc oxide micron hollow ball and preparation method thereof

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.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Catalyst containing rare-earth metal for preparing vinyl acetate using acetylene method and preparation method and use thereof

The invention belongs to the field of vinyl acetate synthesized by a fixed bed type acetylene gas phase method, in particular to a catalyst for preparing vinyl acetate by a rare earth metal-bearing acetylene method as well as a preparation method thereof, and the rare earth metal-bearing catalyst is applied to the synthesis of vinyl acetate which takes acetic acid and acetylene as raw materials by adopting the fixed bed type gas phase method. The zinc acetate and lanthanum acetate are dissolved with methanol, then active carbon is dipped in the methanol solution containing the zinc acetate and lanthanum acetate under agitation, the zinc acetate and lanthanum acetate are loaded on the active carbon through an impregnation method, and the catalyst is obtained after drying. The content of the loaded active component zinc acetate is 10 to 40wt% of the total weight of catalyst, and the content of the loaded active component lanthanum acetate is 0.1 to 5wt% of the total weight of catalyst. The catalyst takes the active carbon as a carrier, and adopts two metallic salts of the loaded zinc acetate and the lanthanum acetate, and the catalyst containing lanthanum acetate has the advantage of low initial temperature of reaction compared with the usual active carbon zinc acetate catalyst.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Method for quickly determining content of additive of plurality of types in food

The invention relates to a method for quickly determining the content of additive of a plurality of types in food. An adopted technical scheme is as follows: a solid sample is accurately weighed into a centrifuge tube, petroleum ether or n-hexane is additionally arranged to become homogenate, and supernatant fluid is removed by centrifugation; after the petroleum ether or the n-hexane in the residue are volatilized, the mixed solvent of ethanol, ammonia and water is additionally arranged, ultrasonic extraction is carried out, and the supernatant fluid is obtained by centrifugation as sample liquid for testing; the sample liquid for testing is adopted, potassium ferrocyanide solution and zinc acetate solution are additionally arranged, the mixture is mixed uniformly and centrifuged; the supernatant fluid is concentrated in water bath at 60DEG C to 100DEG C; concentrated solution is transferred to a measuring flask with water; the pH value is regulated to 5 to 7, water is additionally arranged to fix the capacity to a scale; the mixture is mixed uniformly, is filtered by a 0.45mum microfiltration membrane and arranged in a sample bottle as sample liquid; and the sample liquid is tested in a liquid chromatograph by gradient elution under variable wavelengths. According to the invention, the method for quickly determining the content of additive of a plurality of types in food is simple and easy, has high precision, high accuracy, high sensitivity, has the recovery rate being above 80 percent, and is used for determining the content of additive of a plurality of types in food at the same time.
Owner:LIAONING PROVINCE INST FOR FOOD & DRUG CONTROL

A kind of synthesis method and application of nano zinc cadmium sulfide with visible light catalytic activity

InactiveCN102285682AGood hydrogen production performance by photolysis of waterStrong absorption capacityPhysical/chemical process catalystsCadmium sulfidesGeneration rateSynthesis methods
The invention discloses a synthesis method and use of nano cadmium zinc sulfide with visible light catalytic activity and relates to a synthesis method and use of a sulfide having visible light catalytic activity. When the synthesis method is used, the long reaction time and high reaction temperature problems of the conventional method for preparing cadmium zinc sulfide are solved. The synthesis method comprises: dissolving zinc acetate, cadmium acetate, thioacetamide and dodecyl benzene sulphonic acid in alcohol solvent to obtain mixed solution; and placing the mixed solution in microwaves for reaction. The nano cadmium zinc sulfide synthesized by the method can be used as a photocatalytic material for use in the hydrogen production by decomposition in visible light. The synthesis methoddisclosed by the invention adopts a simple process and readily available raw material, and can synthesize the nano cadmium zinc sulfide quickly with small energy consumption and high yield. The nano cadmium zinc sulfide has uniform particles and high purity and has high strong absorbability at wavelength of about 490 nanometers; and the nano cadmium zinc sulfide demonstrates good visible light response property, and the hydrogen generation rate reaches 300 to 450 millimoles/h<-1>.g<-1>, which is very high.
Owner:HARBIN INST OF TECH

Multifunctional material integrating bactericidal and hemostatic properties and chemical and biological warfare agent protective properties and preparation method of multifunctional material

InactiveCN106267300AExcellent decontamination efficiencyImprove stabilityAbsorbent padsBandagesFiberSodium chloroacetate
The invention relates to a nano-silver @MOF-5@ natural biological fiber multifunctional composite material integrating good bactericidal and hemostatic properties and chemical and biological warfare agent protective properties and a preparation method of the multifunctional composite material. The preparation method comprises the following steps: (1) impregnating natural biological fibers in a NaOH solution containing sodium chloroacetate, taking out the natural biological fibers and flushing the natural biological fibers by virtue of distilled water; (2) impregnating a material obtained in the step (1) alternately in a DMF solution of zinc acetate and a mixed solution of DMF of terephthalic acid and triethylamine in a circulating mode, and washing the material by virtue of DMF after each impregnating so as to obtain (MOF-5)n@ natural biological fibers through such alternate circulating precipitation; and (3) washing the material by virtue of a DMF solution, impregnating the material in CHCl3, and conducting vacuum drying; then impregnating the material in AgNO3 ethanol and water solution, conducting ultraviolet irradiation, flushing the material by virtue of de-ionized water and conducting vacuum drying. The multifunctional composite material disclosed by the invention is simple and easily controllable in preparation process, easily available in raw materials and low in production cost.
Owner:BEIJING UNIV OF CHEM TECH +1

Non-interpenetrating chiral MOF stationary phase, its preparation method and application in enantiomer separation in HPLC

The invention relates to a non-interpenetrating chiral MOF (metal organic framework) stationary phase, its preparation method and application in enantiomer separation in HPLC (high-performance liquid chromatography). The stationary phase is a non-interpenetrating chiral three-dimensional porous framework complex with a structural formula as {[ZnL].H2O}n. An asymmetric structural unit {[ZnL].H2O} of the complex is composed of a Zn<2+>, an L ligand and a guest water molecule. The L ligand is -NH- containing chiral pyridine carboxylic acid, its chemical composition is [(N-(4-pyridylmethyl)-L-leucine.HBr)], and its molecular formula is C12H19BrN2O2. Chiral amino acid and 4-pyridylaldehyde are selected as raw materials to synthesize the-NH- containing pyridine carboxylic acid chiral ligand by a one-step process. The ligand and zinc acetate are adopted as raw materials to undergo room temperature diffusion so as to obtain the MOF stationary phase. The material provided in the invention has uniform chiral helical channel, uniform aperture and orifice, and can be used for separation of chiral drugs and other enantiomers. The separation is selectively dependent on the size of a separated enantiomer molecular size, but is not dependent on the functional group of the separated enantiomer. Thus, the non-interpenetrating chiral MOF stationary phase has the characteristics of traditional zeolite molecular sieve separation.
Owner:SHANDONG NORMAL UNIV
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