931 results about "Chemical preparation" patented technology

The present invention concerns a novel means by which chemical preparations can be made. Reactions can be accelerated on special chips using microwave energy. The chips contain materials that efficiently absorb microwave energy causing chemical reaction rate increases. The invention is important in many small scale chemical transformations including those used in protein chemistry and in combinatorial chemistry.

The invention relates to a chemical preparation method for a nitrogen-doped graphene quantum dot, belonging to the technical field of nano materials. The invention particularly relates to a preparation method for the nitrogen-doped graphene quantum dot. The method comprises the following steps: firstly, by taking graphite oxide as a carbon source and glycine as a nitrogen source, preparing a nitrogen-doped graphene sheet under a high-temperature annealing condition; then, cutting the deeply oxidized nitrogen-doped graphene sheet into an oxidized nitrogen-doped graphene nano sheet; preparing the nitrogen-doped-graphene quantum dot with super-strong blue fluorescence by way of a hydrothermal reaction. The synthetic method of the nitrogen-doped graphene quantum dot provided by the invention is simple in synthetic process, all raw materials are cheap and easy to get in the market, and the prepared nitrogen-doped graphene quantum dot is high in purity and yield, mono-dispersible and good in water solubility, has a very strong blue fluorescence performance and has a very good application prospect in the application fields of lithium batteries, micro supercapacitors, biological fluorescent labels, solar batteries and the like.

The invention relates to a method for producing a biological organic fertilizer by using livestock and poultry died from diseases. According to the invention, the dead livestock and poultry are adopted as main raw materials, transported to a chemical preparation factory, and centralized and stacked at a raw material zone; the raw materials are cut and minced by using a mincing machine; a functional biological fermentation microorganism agent is added into the minced material for softening; the softened material is subjected to high-temperature processing in a high-temperature steaming device, such that a crude material is prepared; the crude material is stir-fried in a stir-frying stirring machine; and the stir-fried material is processed by an oil-bone separator, such that oil, oil slag, and meat-bone meal semi-finished product are produced. The biological organic fertilizer production process comprises pretreatment, tempering, inoculation, fermentation, drying and dehydration, and crushing and sieving. According to the invention, bodies of livestock and poultry died from diseases and animal processing waste are subjected to high-temperature steaming and high-temperature aerobic fermentation two-step harmless treatments, such that the waste is turned into safe and high-quality biological organic fertilizer. The processing process is simple, cost is low, no secondary pollution is caused, pollution caused by livestock and poultry died from diseases can be effectively eliminated, and safe and high-quality biological organic fertilizer can be obtained.

The invention relates to a nanometer hierarchical pore MFI molecular sieve one-step synthesis method, belonging to the fields of catalytic chemistry, inorganic chemistry and physical chemistry; wherein, MFI molecular sieve can be Silicalite-1, ZSM-5 or TS-1, the specific surface is 400-1100m<2> / g and the total pore volume is 0.15-0.83 cm<3> / g. The preparation method is characterized in that commercial fluorocarbon / hydrocarbon surfactant is used as template agent of the mesoporous structure and the hierarchical pore MFI molecular sieve can be synthesized through one step reaction on the cooperative action between the commercial fluorocarbon / hydrocarbon surfactant and microporous molecular sieve template. The method is easy, the cost is low and the combination of mesoporous and microporous structures can be realized. The material not only has the characteristics of high activity and high hydrothermal stability of microporous molecular sieve, but also eliminates diffusion control, thus facilitating molecule reaction. The new material has wide application prospect in the fields of petrochemical engineering, chemical preparation, environmental catalysis and the like.

The invention discloses a preparing method of alkality computer hard disk polishing liquid in chemical preparation domain, which comprises the following steps: setting pH value of polishing liquid at 7-10; making the mass percent of oxidant, organic complexing agent and grinding agent at 0.1%-5%, 0.1%-5% and 0.5%-20% separately; composing ingredient A with diamond pyramid hardness bigger than 7 and ingredient B with diamond pyramid hardness bigger than 5; getting grinding agent; forming oxidant, organic metal chelating agent, high hardness and low hardness rubbing agent in neutral and alkality agent; adopting soft and hard merging multiple polished rubbing particle method; decreasing grievous fish tail caused by big particle boule aluminum oxide; increasing graduation efficiency; This invention adopts alkality polishing agent, which decreases the polishing loss of hard disk edge.

The invention relates to a preparation method of a novel papermaking wet part deformer, belonging to the field of special chemical preparations for papermaking. The novel papermaking wet part deformeris characterized by comprising the following components: 5-99 percent of fatty acid methyl ester derivative (1), 0.1-80 percent of polyether (2), 0.1-70 percent of modified polyether (3) and 0.1-20 percent of natural oil (4), wherein the fatty acid methyl ester derivative has a general structure formula of R<1>CO(EO)x(PO)yOCH3, a molecular weight of 300-3000 and a cloud point of 20-80 DEG C and is a product prepared by an addition reaction of ethylene oxide (EO) and propylene oxide (PO) under the action of a catalyst by using fatty acid methyl ester as an initiator; the polyether has a structural general formula of R<2>(M(EO)m(PO)nH)a, a molecular weight of 500-8,000 and a cloud point of 10-80 DEG C; and the modified polyether has a structural general formula of R<2>(M(EO)m(PO)nR<3>)a. The novel papermaking wet part deformer is not only suitable for a papermaking wet part working procedure, but also suitable for the treatment of papermaking waste water and the elimination of other water-phase foams.

The invention relates to a chemical mechanical polishing abrasive particle CeO2 and a method for preparing the same, belonging to the rare earth powder material chemical preparation technical field. The invention is to prepare the CMP abrasive particle by utilization of cerous inorganic salt solution and homogeneous precipitation agent. The method comprises the following steps that: the cerous inorganic salt and the precipitation agent are prepared into solution with certain proportion; the solution is uniformly mixed through ultrasonic vibration; deposits are generated after the solution is heated to a certain temperature; serum is kept stand, aged, filtered and calcined, and then the CeO2 abrasive particle is prepared. The method also accelerates the nucleation rate through addition of surface active agent so as to reduce the reaction temperature, and simultaneously the nodulizing degree of the abrasive particle obtained is also good. The method prepares the CMP abrasive particle, wherein, the CMP abrasive particle belongs to the single-phase cubic crystal system; the space group is O<5>H-FM3M; the dispersibility is good; the grain fineness distribution is uniform; the shape is similar to a sphere; and the specific surface area BET is more than 0 and less than 50m<2> / g.

The invention relates to a novel steam generating device and application thereof. The inside of a shell of the device is provided with a sealing water tank provided with a water inlet plug and a steam generator, wherein the inside of a heating shell of the steam generator is provided with a heating pipe, a plurality of evaporating chambers which are separated by separating plates and communicated through steam outlet channels, and a steam outlet chamber which is communicated with the last evaporating chamber and provided with steam outlet holes. The cross section area of each steam outlet channel between the evaporating chambers and between the evaporating chamber and the steam outlet chamber is between 2 and 5 square millimeters, and the steam is output to a working surface by a steam output pipe. A water inlet pipe and a steam return pipe which are controlled by a control valve are arranged between the water tank and a heating body, wherein the steam return pipe introduces high pressure steam in the heating body into the water tank by one path so as to ensure that the pressure in the water tank and the pressure in the heating body are balanced, and the water can enter the heating body by deadweight. The device has the advantages that: (1) the heating evaporation adopts a physical theory, and chemical preparations do not need to be added, thereby having the advantages of simple process, reliability, clean steam, environmental protection, convenient use and high efficiency; (2) an ultrathin heating evaporation device can be adopted, and applied to homes and other places difficult to be cleaned by tools; and (3) the power of the steam generator is cyclically driven by self, and has the advantages of low cost, no noise, safety and long service life. The device can be applied to electric appliance products, such as steam mops, hand-hold type cleaners, steam irons, and the like.

The invention discloses a one-step chemical preparation method for graphene and polyaniline composite materials. Hydroiodic acid is served as reductive agent, graphite oxide is served as dopant, and graphite oxide reduction and aniline polymerization are achieved in one step in an acid medium to prepare the graphene and polyaniline composite materials. The one-step chemical preparation method for the graphene and polyaniline composite materials comprises dissolving the graphite oxide into an acetic acid solution, adding aniline monomers, uniformly mixing through ultrasonic dispersion, adding reducing agent hydroiodic acid and dropwise adding ammonium persulfate oxidizing agent, magnetic stirring, achieving aniline in situ polymerization and filtering, washing and drying after complete reaction to obtain the graphene and polyaniline composite materials. According to the one-step chemical preparation method for the graphene and polyaniline composite materials, the graphite oxide in the graphene and polyaniline composite materials is fully restored, generated polyaniline nano-particles are dispersed between graphene sheets, the composition method is simple, the reaction time is short, the composite materials are high in specific surface area and good in reactivity and are conductive composite materials with good flexibility and conductivity.

The invention discloses a Chinese herbal medicine insecticide, relating to the technical field of insecticides. The Chinese herbal medicine insecticide is prepared from the following raw materials in parts by weight: 20-28 parts of matrine, 10-15 parts of Chinaberry root bark, 3-7 parts of castor leaves, 2-5 parts of common macrocarpium fruit, 2-6 parts of ginger, 3-8 parts of Japanese thistle herb or root, 2-6 parts of argy wormwood leaf, 3-5 parts of Sichuan pepper, 1-5 parts of airpotato yam rhizome and 2-6 parts of tuber stemona root. The Chinese herbal medicine insecticide disclosed by the invention is low in cost, reasonable in compatibility, convenient to use and significant in insecticidal effect, and the problems that conventional chemical preparations and toxic pesticides are high in residual quantity, can cause toxic or side effects to plants, human and livestock, and can pollute environment are solved.