52results about How to "Single composition" patented technology

The invention relates to a phosphine oxide-modified pillar (5) arene derivative and an application thereof, belonging to the technical field of selective separation and extraction agents for thorium (IV) and uranium (VI) from rare earth elements. The phosphine oxide-modified pillar (5) arene derivative is diphenyl phosphine oxide-substituted pillar (5) arene, is used as an extraction agent for selectively separating thorium and uranium from rare earth elements, and can realize the selective separation of uranium to thorium in actinide elements to a certain extent. The extraction agent, namely the phosphine oxide-modified pillar (5) arene in the invention has the advantages of single composition, good chemical stability, simple synthesis and easiness in obtainment, and is suitable for industrial production; furthermore, the using quantity of the extraction agent is low, and the thorium and the uranium can be selectively separated from the rare earth elements under high acidity; and in addition, the extraction agent further has the advantages of high extraction speed, high phase splitting speed and the like. The product disclosed by the invention has great economic benefits and practical application prospects.

The present invention belongs to the field of piezoelectric film material preparing technology, and is water base sol-gel process of preparing high Curie point piezoelectric film. Tetrabutyl titanate and nitrate and acetate of other metal cation as main material and glacial acetic acid and deionized water as main solvent are first prepared into stable sol; and the sol is coated and fast annealed to form the piezoelectric film with compact structure and homogeneous components. The piezoelectric film has excellent piezoelectric performance, Curie point as high as 435 deg.c, crystal grain size of 20-100 nm, effective piezoelectric coefficient d33*of about 80 pC/N, comparable with that of the PZT film, and thickness controllable in 0.15-1 micron. The piezoelectric film is suitable for various piezoelectric ferrite elements and devices used in high temperature, and may find wide application in space, automobile and other industrial fields.

The invention relates to a Y2O3-TiO2 series microwave dielectric ceramic and a preparation method thereof. The raw materials Y2O3, TiO2 and Bi2O3 are weighed in proportion, mixed, ball milled, dried, pre-fired, pressed and sintered to obtain microwave dielectric ceramics, the main crystal phase of which is Yi2Ti2O7 pyrochlore structure. The pure Y2O3-TiO2 system prepared by the present invention has good dielectric properties, and is a microwave medium with a relatively excellent dielectric constant; the sintering temperature of pure Y2O3-TiO2 microwave dielectric ceramics is significantly reduced after doping with Bi2O3, and the dielectric The electrical constant has been significantly improved, and the dielectric loss has been kept low.

The invention discloses hexadecyl toluene sulfonate for flooding and a preparation method thereof, a surfactant and application thereof. The surfactant prepared from the hexadecyl toluene sulfonate or an industrial product thereof and alcohol has good interfacial activity, strong capacity of resisting dilution and low use concentration (0.05-0.3wt%), can enable the oil-water interfacial tension to be ultralow (order of magnitude of 10<-3>mN/m) in wider or narrower alkali concentration ranges (0.4-1.2wt%) and under the strong and weak alkali conditions and has good composite system stability and high flooding efficiency. The recovery ratio of core flooding experiments is enhanced by more than 20% than that of water flooding. The surfactant which is single in composition, definite in structure and excellent in properties and is stable is provided for popularization and application of tertiary oil recovery, not only can oil recovery be substantially enhanced but also the domestic formula of the surfactant is achieved and the cost of ASP (alkaline-surfactant-polymer) flooding is greatly reduced.

The present invention belongs to the technical field of catalyst preparation, and provides a nitrobenzene hydrogenation aniline preparation catalyst for a fluidized bed. The catalyst provided by the present invention has the following characteristics that: composition is single, the catalyst only contains an active ingredient copper, introduction of a multi-element component to the catalyst is not required, and physicochemical properties of the catalyst are: an average specific surface area of ??350-500 m<2>/g, an average pore size of 2.5-4.0 nm, and an average pore volume of 0.55-0.85 ml/g. In addition, a mass content of the active ingredient copper in the catalyst is 10-25%; a mass percentage of the catalyst with particle size distribution of 125-600 mum is 80-98%, and a mass percentage of the catalyst with particle size distribution less than 125 mum is less than 2%; and the catalyst has characteristics of high activity, uneasy pore clogging, long service life, high selectivity, and the like.

The invention provides a method for preparing a calcium silicate thermal insulation material by decomposition of sodium calcium silicate, wherein the method comprises the following steps: (1) mixing sodium calcium silicate and a diluted alkali liquid in proportion, carrying out a reaction for 2-20 h at the temperature of 90-260 DEG C, and filtering to obtain a wet calcium silicate slag; (2) carrying out compression molding of the wet calcium silicate slag obtained in the step (1) in a mold; and (3) drying the sample molded in the step (2), to obtain the calcium silicate thermal insulation product. The method is adopted to prepare the calcium silicate thermal insulation material, and has the advantages of simple steps and low energy consumption; the raw materials can be a mixture taking sodium calcium silicate as a main component and obtained by chemical conversion of fly ash, coal gangue, kaolin, quartz sand and other high-silicon minerals, also can be a pure sodium calcium silicate obtained by chemical conversion of pure silica, raw material sources are extensive, not only is the problem of environmental pollution solved, but also the mineral high value utilization is realized; and the prepared calcium silicate finished product has the advantages of low volume weight and excellent thermal insulation property.

The invention provides a method for promoting the quality of oil pyrolyzed from sludge. The method provided by the invention comprises the following steps: mixing sludge, waste biomass and a catalyst according to a weight ratio of 1: (1.0 to 1.5): (0.01 to 0.05); putting the mixture in a fixed bed reactor under a nitrogen atmosphere, segmentally pyrolyzing according to a certain temperature rise program, gradually raising the temperature to 550 DEG C, and condensing generated gas in a condensation device, wherein the yield and the quality of the obtained pyrolyzed oil, which are higher than those of oil pyrolyzed from pure sludge under the same conditions, are respectively: the oil productivity (no water base) is 35% to 45%, the lower calorific value is 30 to 35MJ/kg and the velocity is 15 to 18mm<2>/g. According to the method provided by the invention, the waste biomass and the sludge are co-pyrolyzed, the advantage that the waste biomass and the sludge are pyrolyzed separately is utilized sufficiently to supplement each other, the quality of the oil pyrolyzed from the sludge is promoted, the environmental pollution problem of the two wastes is solved, and clean and high-efficient resource utilization of the two wastes is realized.

The invention relates to the technical field of preparation of organic fertilizers, and particularly discloses an organic fertilizer and a preparation method and application thereof. According to theorganic fertilizer and the preparation method, grape branches, fruit stems, peel dregs and sludge in wastewater of a wine factory are composted through a composite microorganism strain and through a manner of two times of fermentation to obtain the organic fertilizer. Environment pollution caused by branches, sludge and other wastes is solved, effective utilization of wastes is achieved, and the prepared organic fertilizer can increase organic matters in soil, improve physical and chemical properties of soil, is particularly suitable for use as an organic fertilizer in grape plantation, and isof great significance for reduction, recycling and reutilization in grape industry recycling economy.

The invention discloses a synthetic method and application of photocatalyst Bi5O7Br, belongs to the technical field of nano materials, and can solve the problem that current preparation of a Bi5O7Br catalyst requires conditions such as high temperature, high pressure, long-term reaction and an organic solvent for dissolution. The Bi5O7Br photocatalyst with a narrower band gap, stronger visible light response capability and single composition is obtained by using bismuth nitrate pentahydrate and sodium bromate as raw materials and ammonia water as a pH adjusting agent through a simple economical environmentally-friendly normal-temperature hydrolysis process. According to the method provided by the invention, the raw materials used in the method are cheap and easy to obtain, no organic solvent is used, and the method is simple, easy to implement, economical and environmentally friendly, does not produce toxic or harmful by-products, uses normal-temperature normal-pressure conditions, issimple and safe, and easily realizes industrial production.

The invention relates to a composite floor, in particular to a light VCP floor and a preparation method thereof. The light VCP floor is composited by a color film, an abrasion-resistant layer and a VCP base material from top to bottom. The main component of the abrasion-resistant layer is chlorinated polyethylene. The abrasion-resistant layer comprises the raw materials, by mass, of 64%-75% of the chlorinated polyethylene, 15%-20% of environment-friendly plasticizers, 3%-4% of environment-friendly stabilizers and 7%-12% of light calcium carbonate. The VCP base material comprises the raw materials, by mass, of 32%-36% of polyvinyl chloride, 53%-59% of composite calcium carbonate, 3%-4% of environment-friendly stabilizers, 0.8%-1.5% of lubricants, 0.5%-1% of foaming agents and 4%-5% of processing agents. According to the light VCP floor, a PVC base material is not needed, the overall density is 0.95 g/cm<3> or so, installation is simple and convenient, and transportation cost is low.

The invention discloses a centella asiatica extract applied to cosmetics and a preparation method of the centella asiatica extract. The preparation method comprises steps as follows: 1, dry all grassof centella asiatica is taken, smashed and mixed with an ethanol solution, a mixture is subjected to reflux heating and filtered, and a filtrate is collected; 2, the filtrate is concentrated to be pasty, water is added, and a centella asiatica concentrated solution is obtained; 3, the centella asiatica concentrated solution is extracted with petroleum ether, petroleum ether is recovered under reduced pressure in vacuum, and a petroleum ether spot sample is obtained; 4, the remaining concentrated solution is extracted with ethyl acetate, ethyl acetate is recovered under reduced pressure, and anethyl acetate spot sample is obtained; 5, the ethyl acetate spot sample is subjected to silica gel column adsorption and is eluted by mixed solvents in volume ratios of petroleum ether to acetone being 5:1 and 4:1 and then eluted by a mixed solvent with a volume ratio of petroleum ether to acetone being 2:1, the elution solvent with the volume ratio of petroleum ether to acetone being 2:1 is collected and is volatilized to be dry under reduced pressure, and a target sample is collected; 6, the target sample is subjected to vacuum drying, and the centella asiatica extract is obtained. The separation effect is good, the organic solvent is recycled, and the environmental pollution pressure is reduced.

The invention discloses a multilayer aerobic fermentation system and a fermentation method thereof, and belongs to the technical field of aerobic composting. The technical scheme is characterized in that the multilayer aerobic fermentation system comprises a fermentation tank, wherein sludge layers and bamboo charcoal layers are alternately arranged inside the fermentation tank from top to bottom, the bottom layer is the bamboo charcoal layer, the bamboo charcoal layer is formed by horizontally arranging a plurality of semi-cylindrical bamboo charcoal with a downwardly opening in a single layer manner, and the upper portion and the lower portion of the fermentation tank are respectively provided with a gas inlet and a gas outlet. The invention further specifically discloses the fermentation method of the multilayer aerobic fermentation system. According to the present invention, the used separation material bamboo charcoal can reduce the ammonia volatilization and reduce the total nitrogen loss, and has the porous structure compared to the traditional conditioner wood chips so as to effectively adsorb the odor generated during the fermentation process, the composition of the fermentation substrate is simple, the condition that the substrate contains a large number of the difficultly-degraded materials due to the addition of wood chips and other conditioners is avoided, and the fermentation efficiency is improved.

The invention discloses a continuous preparation method of an oil-based raw material for mesophase pitch production. The method comprises the following steps: carrying out ultrasonic cavitation treatment on one or more heavy fraction sections of aromatic hydrocarbon-rich heavy oil, catalytic slurry oil, coal tar or ethylene tar, which are greater than 300 DEG C, as raw materials, regulating and controlling the composition and distribution of four components of the raw materials, and enabling the sum of the aromatic carbon rate (CA) and the naphthenic carbon rate (CN) to be 55-80%, and the absolute change rate of the naphthenic ring number and the aromatic ring number of the raw oil to be less than 3.5%; (2) carrying out hot filtration combined ion exchange treatment to remove solid impurities in the raw oil and realize group composition distribution regulation and control, and further regulating and controlling molecular weight distribution to be within 300-650; (3) solvent extraction: further optimizing the group composition distribution of the raw oil through solvent extraction, wherein the aromatic carbon rate CA is controlled between 60% and 85%; and (4) carrying out catalytic polycondensation reaction to obtain the mesophase pitch with the softening point of 270-300 DEG C, the mesophase content of more than 97% and good spinning performance.

The invention provides a synthesis method of a B (4, 5) alkenyl substituted carborane derivative, which comprises the following steps of in the presence of a catalyst and an additive, carrying out decarboxylation cross-coupling reaction with 1-carboxyl-2-(substituted) o-carborane, alpha, beta unsaturated ester, ketone and an amide alkenylation reagent used as raw materials in a solvent to generateB (4, 5) alkenyl substituted o-carborane. The reactants involved in the invention have very good universality, and the functional groups of the substrate have very good compatibility; alpha, beta unsaturated esters, ketones and amides which are simple and easy to obtain are used as alkenylation reagents, so that the relative cost is relatively low; the method is high in reaction selectivity and yield, single in reaction system composition, simple in post-treatment and easy to implement.

The invention discloses a method for treating n-butyl isocyanate kettle residues, which is used for effectively resourcefully treating the n-butyl isocyanate salt-containing solid kettle residues, reducing the discharge of three wastes and improving the added value of the product. Through neutralization and pressurized alkaline hydrolysis processes, components such as an n-butyl isocyanate self-polymer, a byproduct 1, 3-dibutyl urea and n-butylamine hydrochloride are contained in kettle residues, and the reacted product is relatively single in composition, so that the post-treatment difficulty is greatly reduced, and the product purity is high. The n-butylamine is effectively recycled through the extractive distillation process, the kettle residue recycling process flow is short, the prepared product is high in purity, and effective utilization of the kettle residues is truly achieved.