65 results about "Solution synthesis" patented technology

The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting in a suitable solvent a poly(alkenyl benzene-co-maleic anhydride) and a primary amine to form a poly(alkenyl benzene-co-maleimide) polymer. The poly(alkenyl benzene-co-maleimide) polymer while remaining in solvent is grafted with a maleated polyalkylene through the use of a grafting agent such as an alkyl diamine to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product. The solvent is then removed from the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product and the polymer is mixed with extender such as oil sufficient to form the gel. During oil extension the graft copolymer is further crosslinked due to the presence of additional alkyl diamine.

The invention provides a solution synthesis method of an atomically-dispersive metal oxygen reduction catalyst, comprising: (1) mixing a metal compound and a first solvent to form a metal precursor solution; (2) mixing a reducing agent and a second solvent to form a reducing agent solution; (3) mixing a carrier material and a third solvent to form a dispersion; (4) mixing the metal precursor solution and the reducing agent solution by dropwise adding and stirring so as to obtain a solution containing an atomically-dispersive metal; and (5) adding the dispersion into the solution containing theatomically-dispersive metal, stirring such that the carrier material is used to adsorb the automatically-dispersive metal to obtain the atomically-dispersive metal oxygen reduction catalyst, whereinthe steps (4) and (5) have the ambient temperature of -100 DEG C to 0 DEG C. The catalyst prepared via the method has the advantages of high density, high yield, high efficiency, high applicability and the like, the method is suitable for large-scale preparation of catalysts having high metal loading capacity, and the cost is significantly reduced.

The invention discloses a surface modification method for calcium sulfate whiskers. The surface modification method comprises steps: anhydrous calcium sulfate whiskers are prepared; a surface modifier solution is prepared; the calcium sulfate whiskers are added slowly into the surface modifier solution with stirring, slow stirring is carried out, and a reaction is carried out; the modified anhydrous calcium sulfate whiskers are subjected to impurity removal processing. The method is simple, the steps are few, raw materials are saved, water processing burden is reduced, the anhydrous calcium sulfate whisker product has good performance, and tensile strength, the tear resistance, the folding strength and the pop strength are high. The solution synthesis method is employed, a calcium-containing industrial tail liquid is reacted with sulfuric acid, calcium sulfate whiskers are prepared, the cleaning utilization problem of calcium ions in the waste liquid is solved, which facilitates to achieve cyclic utilization of raw materials and resources are saved. The yield of the prepared calcium sulfate whiskers is high, the crystal form is structured and the length-to-diameter ratio is high.

A solution phase synthetic method for preparing basic tripeptides of the formula Gly-Xaa-Gly-X which have in various biological properties such as stimulating protein production when used as additives in a bioreactor. The basic tripeptides of the invention may be produced on gram or kilogram scale.

The invention discloses a preparation method of nanosilver conductive ink, and belongs to the field of printing materials. The preparation method is characterized by comprising the following steps: taking silver nitrate and PVP (Polyvinyl Pyrrolidone), adding the above substances into water, and intensively stirring under a magnetic stirrer until a solution is colorless and transparent; preparing a sodium borohydride solution; taking the sodium borohydride solution, and adding into the prepared silver nitrate solution; centrifuging a filtered reactant; drying a centrifuged product in an air blast drying box at the drying temperature of 45 to 60 DEG C, so as to obtain nanosilver powder; adding the nanosilver powder into a dispersing solvent, stirring and performing ultrasonic dispersion, thus obtaining the nanosilver conductive ink. According to the preparation method, a solution synthesis method is used to generate nanosilver particles wrapped by a surfactant in an aqueous solution. agglomerated large particles and impurities are removed by filtering,then centrifuging is performed repeatedly, and nanosilver powder is cleaned by sequentially using deionized water, acetone and ethanol; the nanosilver conductive ink has the advantages of low requirement on environment and equipment, good particle dispersity and uniform particle size; the preparation method disclosed by the invention has the advantages of small particle size of the particles, good dispersity and mild reaction conditions.

A method of making a doped silicon oxide thin film using a doped silicon oxide precursor solution includes mixing a silicon source in an organic acid and adding 2-methoxyethyl ether to the silicon source and organic acid to from a preliminary precursor solution. The resultant solution is heated, stirred and filtered. A doping impurity is dissolved in 2-methoxyethanol to from a doped source solution, and the resultant solution mixed with the previously described resultant solution to from a doped silicon oxide precursor solution. A doped silicon oxide thin film if formed on a wafer by spin coating. The thin film and the wafer are baked at progressively increasing temperatures and the thin film and the wafer are annealed.

The invention provides a method for mother solution pretreatment and cyclic utilization in chain type ferrous glycine complex synthesis, and belongs to the technical field of third-generation microelement feed additive-chain-type ferrous glycine complex preparation. The method comprises the main steps that a ferrous glycine complex synthesis mother solution is stored in strong acid; when the mother solution is recycled, waste scrap iron is adopted as a reducing agent, a reaction and hydrolytic precipitation are performed on the high temperature and strong acid conditions, suction filtration is performed at the high temperature to a reaction kettle, and the mother solution is pretreated and recycled. The method has the advantages that the storage time and the oxidation degree of the mother solution do not need to be considered, the low-cost waste scrap iron is utilized for replacing high-cost reduced iron powder as a reducing agent, the pH needed in the mother solution synthesis can also be ensured, meanwhile, flocculation and coprecipitation can also be performed in the circulating mother solution for accumulating impurities, the product quality is improved, and operation is easy and convenient.

The invention discloses a preparation method of a gastroenteritis virus monoclonal antibody biological immune preparation, and belongs to the technical field of biological pharmacy. The preparation method comprises processes of TGEV (transmissible gastroenteritis virus) monoclonal antibody preparation, traditional Chinese medicine extracting solution preparation, and TGEV monoclonal antibody and traditional Chinese medicine extracting solution synthesis. The preparation method comprises the following steps: injecting paraffin oil into a mouse peritoneal cavity, injecting hybridoma cells on 6th-9th days, extracting peritoneal dropsy on 7th-15th days, and centrifuging at 2500-3500rpm for 8-12min, so that the supernatant TGEV monoclonal antibody is obtained; soaking 1 part of radix isatidis powder in 8-12 parts of water for 7-15h, keeping the radix isatidis powder in a water bath at 50-70 DEG C for 8-12min, concentrating filtrate at 60-70 DEG C under negative pressure of 7-8Kpa, adding ethanol until ethanol concentration is 70-90% and reserving a supernatant, so that the traditional Chinese medicine extracting solution is obtained; and mixing the TGEV monoclonal antibody and the traditional Chinese medicine extracting solution at the volume ratio of 1 to (0.8-1.2), so that a finished product is obtained. The preparation disclosed by the invention, as an anti-infection medicine, is pure natural, free from drug residues, free from drug tolerance and free from toxic and side effects, and the preparation is significant in effect.

The invention relates to the technical field of cultivation and comprehensive utilization of resources, and specifically relates to an integrated livestock and poultry cultivation system of biomass combined heat and power generation. The cultivation system comprises a cultivation room; a heating device, a cooling device, a flushing device, an illumination device and a feces collection tank are arranged in the cultivation room; and the system also comprises a feces regulation tank, a sewage sedimentation tank, a first biogas fermentation tank, a second biogas fermentation tank, a methane extraction device, a methanol solution synthesis device, a biogas liquid and biogas residue treatment device, a reformer of hydrogen production by using methanol water, a fuel cell and a control device. According to the invention, heat energy and electric energy are generated through the conversion of livestock and poultry cultivation wastes, and the intelligent control of the whole system is realized,so that the biomass energy source can be efficiently converted and comprehensively utilized, the ecological integrated livestock and poultry cultivation system can be formed, and the system has a wideindustrial application prospect.

The invention relates to a modified psyllium seed husk thickening agent used for drilling fluid. The modified psyllium seed husk thickening agent comprises, by mass, 31-36% of psyllium seed husks, 34-35% of NaOH, 18-19% of isopropanol, 6-8% of a propylene oxide, 6-8% of a hydrophilic nanosilicon dioxide and the balance deionized water. The modified psyllium seed husk thickening agent used for drilling fluid is synthesized mainly through a solution synthesis method, ethoxy psyllium seed husks are formed and combined with the hydrophilic nanoslicon dioxide on the basis, and therefore an ethoxy psyllium seed husk-nanosilicon dioxide composition is formed; a systematic thickening effect and temperature resistance are improved; compared with a current synthesized polymer, the modified psylliumseed husk thickening agent is environmentally friendlier and more suitable for clay-phase-free drilling fluid, solid-phase-free drilling fluid and solid-phase-free completion fluid. The method is simple, easy to implement and easy to popularize, and the thickening agent for drilling fluid is efficient.

The invention relates to a synthetic method of morphology-controllable organic-inorganic hybrid bismuth-based crystal. Based on the principle that a crystalline material is formed by a solvothermal reaction, the synthetic method is completed by steps of bismuth-based material solution synthesis, solvothermal crystal preparation, product washing and vacuum drying. By controlling types of solvents, crystal in different morphologies is controllably synthesized. The solvothermal preparation method has advantages of simple operation, mild condition, simple process and the like. According to the invention, the influence of solvents on crystallinity and growth mechanism of an organic-inorganic hybrid material can be studied, thus providing theoretical basis for the design and research and development of a novel organic-inorganic hygrid material.

The invention provides a method for preparing nicotinamide mononucleotide eutectic, and aims to solve the technical problems that the existing nicotinamide mononucleotide crystal has poor fluidity, so that the NMN drug or health product has large loading/weight difference and different quality. The method uses nicotinamide mononucleotide as an active ingredient and isonicotine as an eutectic forming substance, and adopts a solution synthesis method to mix the nicotinamide mononucleotide and the isonicotine for crystallization. The method has the advantages of simple operation and wide application range.

A semiconductor luminescent material with adjustable luminescent colours is disclosed, and is a doped ZnO/pure ZnO core-shell structure, wherein doped ZnO is used as a core, pure ZnO is coated on the surface of the doped ZnO core to form a shell layer; doping ions diffusing to the shell layer form the core due to self-purification effect are contained in the pure ZnO shell layer; the size of the doped ZnO core is 15 nm; and the thickness of the pure ZnO shell layer is 3-5 nm. The semiconductor luminescent material with adjustable luminescent colours disclosed by the invention has the advantages of overcoming the self-purification effect of doped semiconductor and increasing doping efficiency by the coating of pure ZnO on surface, realizing the combination of pure ZnO and doped ZnO, enriching energy level distribution, and being capable of adjusting the luminescent colours of the material by changing excitation wavelength because of being a doped ZnO/pure ZnO core-shell structure; additionally, the luminescent material is prepared by means of solution synthesis, as well as is simple in process, easy in operation, decreased in equipment cost, and easy in large-scale production.