606results about How to "Uniform adsorption" patented technology

An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles.

The invention provides a method for preparing a hydrogenation catalyst with high activation. A disposition method is adopted to carry out step-by-step loading to the active components of the metals of VIB and VIII families; the VIB metal comprises tungsten or molybdenum, while the VIII metal comprises nickel or cobalt; a carrier is alumina. The loading of VIB metal takes a corresponding soluble salt as raw material, an acid solution as a precipitator and a cationic surface active agent as a dispersant. In a hydrothermal condition, the corresponding soluble salt, the acid solution and the cationic surface active agent produce metallic oxide particles by a liquid deposition reaction; the loading of VIII metal also takes a corresponding soluble salt as raw material and carbamide as a precipitator; the adding of the precipitator and the generation of precipitation are separated by controlling reaction temperature in sections and even precipitation is realized to disperse the particles of the active components on the carrier evenly. The hydrogenation catalyst prepared shows good effects in the respects of desulfurization and denitrification activation and can greatly reduce the usage of the active components.

The invention provides a granular pesticide fertilizer, and a preparation method and application thereof. The granular pesticide fertilizer comprises the following components expressed in mass percent: on the basis that the total mass of the granular pesticide fertilizer is 100%, 0.001 to 20% of a pesticide active component, 70 to 99% of a granular fertilizer carrier, 0.05 to 9% of an organic solvent, 0.05 to 0.5% of a surfactant and 0.05 to 0.5% of a coating agent. According to embodiments in the invention, the pesticide active component and the granular fertilizer carrier in the granular pesticide fertilizer are reasonably combined, which allows the problem of damage by diseases and insects to soil in agricultural production to be effectively overcome and enables soil fertility to be improved and labor and time to be saved. The granular pesticide fertilizer is produced by using a normal temperature spraying adsorption process and a cladding process, so the preparation method for the granular pesticide fertilizer has the advantages of a simple process, low energy consumption, reduction in production cost, easiness in controlling and operating and suitability for industrial production.

The invention discloses a technology of a microwave heating synthesis method of fiber carbamate; the method is that: firstly, the fiber is soaked in carbamide aqueous solution for completely adsorbing the carbamide, the fiber / carbamide even mixture is obtained by filtering and drying, and then the fiber / carbamide mixture is placed in a microwave oven for being heated, thereby obtaining the fiber carbamate. The synthesis technology of the fiber carbamate provided by the invention has no solvent pollution, organic solvents and any catalyzers do not need, the reacting time is speed, and the energy consumption is low. The synthesized fiber carbamate products has good dissolubility in 6 to 10 wt% of NaOH aqueous solution within the temperature range of -10 to 5 DEG C, and the concentrated solution which is stable, transparent and is suitable for industrial spinning and membrane manufacturing can be prepared.

The invention relates to an electroplating pretreatment method for an acrylonitrile butadiene styrene (ABS) plastic surface. The electroplating pretreatment method comprises the following process steps of: eliminating stress, performing alkali washing for oil removal, pickling, roughening, performing neutralizing treatment, performing chemical activation, and performing the conventional electroplating, wherein in the chemical activation process, plastic base materials are put in to an activation solution and are subjected to hyperthermic treatment in a water bath for a certain period of time, each liter of the activation solution comprises 10 to 12g of nickel sulfate, 20 to 25g of sodium hypophosphite and 5 to 8g of sodium citrate, the pH is 9 to 11, and the temperature is between 70 and 75 DEG C. In the invention, a novel method in which metal palladium activation is not used is provided, can be used for replacing a sodium borohydride and methanol activation process and contributes to environment friendliness; and on the basis of pretreatment, the plastic surface can be directly electroplated, so that the problems of complicated treating processes, high PdCl2 prices, high pollution possibility of a plating solution and the like are solved.

The invention relates to polyester FDY nanometer spinning oil solution and a method for preparing the polyester FDY nanometer spinning oil solution, wherein the polyester FDY nanometer spinning oil solution takes the oil solution total weight as benchmark and comprises: smoothing agent 46-48%, emulsifier 28-32%, anstatic agent 9-10%, balance adjuster 5-7% and inorganic nanometer additive 5-7%. Each component of the oil solution is rationally mixed and mutually coordinated, and the oil solution has good comprehensive property. The method for preparing the polyester FDY nanometer spinning oil solution comprises: preparing inorganic nanometer additive, adding the smoothing agent, the emulsifier and the anstatic agent into a reactor, heating and stirring until the mixture becomes even, cooling the mixture which is evenly stirred, filtering, and obtaining the oil solution products. The method for preparing is simple and easy to operate.

The invention relates to a preparation method of polystyrene/polyaniline conductive polymer composite microspheres with controllable shape and appearance, belonging to the polymer composite technical field, which is characterized in that: firstly, a plurality of PS microspheres with a certain diameter are prepared by the emulsifier-free emulsion polymerization, the PS microspheres are taken as the hard template and added into deionized water in which a plurality of aniline monomers are dispersed, the mixture is stirred by magnetic force to form homogenous emulsion at the ambient temperature; secondly, oxidant solution is added into the former mixture one-time, the PS microspheres are taken as the hard template and the micelle formed by the aniline monomers are taken as the ''soft template''; at last, the polystyrene/polyaniline conductive polymer composite microspheres are obtained by conventional post-processing. The preparation method of polystyrene/polyaniline conductive polymer composite microspheres with controllable shape and appearance has the advantages that: the shape and appearance of the polystyrene/polyaniline conductive polymer composite microspheres can be controlled just by regulating the redox ability of the oxidant; meanwhile, the wall thickness of the core-shell structure and the diameter and the length of the nanometer fiber can be controlled by regulating the addition of the aniline monomers and the redox ability and the addition of the oxidant.

The invention discloses a preparation method for a hydrogenation catalyst. The catalyst is a nickel catalyst. The preparation method for the hydrogenation catalyst comprises the following step: preparing slurry from a part of active metal nickel, an auxiliary agent and a carrier and subjecting the slurry and a precipitating agent to parallel-flow precipitation; then adding a filter cake obtained after filtration into a solution prepared from rest active metal nickel and dropwise adding an alkaline solution; successively carrying out aging, washing and drying; and carrying out molding, drying and roasting so as to prepare the hydrogenation catalyst. The catalyst prepared by using the method is particularly applicable to hydro-decolorization of C5 petroleum resin, C9 petroleum resin and blended C5 and C9 petroleum resin and has the advantages of good activity, high selectivity and good stability.

The present invention relates to an activated coke for absorbing persistent organic pollutant like dioxin in flue gas and a preparation method thereof by using coal quality semi coke as a raw material. The preparation method is as follows: crushing the coal quality semi coke; impregnating the coal quality semi coke with an impregnating solution containing metal hydroxide or alkali metal carbonate activator and compound surfactant, and naturally drying; and finally activating the impregnated and dried semi coke at 800-950 DEG C to prepare the activated coke for absorbing dioxin in flue gas. The activated coke has characteristics of developed porous structure, low manufacturing cost and good adsorption effect, etc.

The invention discloses a carbon-loaded super-small-size precious metal nanoparticle catalyst and a preparation method. The preparation method comprises the following steps: firstly enabling commercial active carbon to be mixed with a precious metal precursor, wherein precious metal contained in the precious metal precursor is one or any two of Pt, Pd, Ru or Rh; then adding water and ethyl alcohol, and forming turbid liquid; and adequately ultrasonic-dispersing, rapidly atomizing and drying in a high temperature, finally acquiring a solid powder-like precursor; calcining the solid powder-likeprecursor in a reducing atmosphere, enabling precious metal ions adsorbed on the surface thereof to be nucleated in situ and forming super-small-size precious metal nanoparticles which are loaded on the surface of a commercial active carbon carrier, to obtain the catalyst. The method is pollution-free, and low in cost. An average diameter of the loaded precious metal nanoparticles does not exceed3 nm, and the precious metal nanoparticles are uniformly loaded on the surface of the active carbon carrier. The catalyst has a higher effective catalytic activity area and excellent catalytic capacity.

A ceramic particle group dispersed in a solvent in a state of primary particles of single crystal, a method for production thereof and a use thereof are disclosed. In one embodiment a method is disclosed for producing a sintered particle (ceramic particle) group of hydroxyapatite (HAp), which includes a step of subjecting a system wherein calcium carbonate is present between primary particles of hydroxyapatite (HAp) to sintering and then dissolving calcium carbonate with water to remove calcium carbonate. A hydroxyapatite (HAp) sintered particle group produced by the above method is a nanometer size particle group having a particle diameter of about 70 to about 120 nm, and is a particle group having a uniform particle diameter (coefficient of variation: 12%), and further 96% of the particle group is dispersed as a single crystal particle.

The invention discloses a multifunctional roller coater which comprises a rack, a coating system, a roller adjustment system and a control system. The coating system comprises a roller set and a conveying mechanism, the roller adjustment system comprises a horizontal adjustment mechanism and a vertical adjustment mechanism, the horizontal adjustment mechanism is used for adjusting the distance, in the horizontal direction, between steel wheels and soft rubber transfer printing wheels, and the vertical adjustment mechanism is used for adjusting rollers to be vertically lifted. According to the multifunctional roller coater, the horizontal distances between the rollers and the positions, in the vertical direction, of the rollers can be conveniently and rapidly adjusted to achieve the aim that the coating thickness and the thickness uniformity are controlled; as the roller set and the conveying mechanism can be effectively assembled and matched, the whole coating system is stable in running, accurate in operation and long in service life, and meanwhile due to the fact that the steel wheels with patterns on the surfaces are adopted, a product can have multiple surface effects, coating is even, and the quality is good.

The invention discloses an Al2O3-coated modified lithium nickel manganese oxide positive electrode material. A preparation method of the Al2O3-coated modified lithium nickel manganese oxide positive electrode material comprises the following steps of (1) preparing a solution; (2) dispersing lithium nickel manganese oxide into deionized water to form a turbid liquid and adding an anionic surfactant for ultrasonic dispersion for 15-30 minutes; (3) adding an Al(NO3)3 solution to an ultrasonic dispersed solution, carrying out ultrasonic dispersion for 15-30 minutes and then adding an NaAlO2 solution while stirring; (4) adding a citric acid solution of which the concentration is 0.5mol/L to the mixed solution obtained in the step (3) while stirring; (5) carrying out ageing, cleaning and drying; and (6) carrying out high-temperature pyrolysis. The crystal growth rate is consistent with the nucleation rate in the preparation process; coating is uniform; the prepared material is high in safety and low in cost; the energy density and the charge-discharge capacity at high voltage are obviously improved; and the capacity retention ratio reaches 86.3% after 500 charge-discharge cycles at a room temperature under the condition of 1C.

The invention discloses an air purifying device which comprises a shell, an air blower, a filtering layer and at least two absorption layers, wherein the shell is a sealed device with an air inlet and an air outlet; the filtering layer, the absorption layer and the air blower are sequentially arranged in the shell, and are sequentially arranged in a direction from the air inlet to the air outlet; and the adjacent absorption layers are oppositely and fixedly arranged in the shell in a staggered way. The air purifying device can be used for effectively purifying air; the replacing time of the absorption layers is prolonged; and the purifying efficiency can be improved.

The present invention discloses a manufacturing method of high permeability adsorption lining paper. It uses natural wood pulp as raw materials and includes brashing pulp, desanding, easing, papermaking and other steps. It is characterized by: said wood pulp is mixed by coniferous pulp and broadleaf pulp, the weight ratio of coniferous pulp is 80-90% and thereof broadleaf pulp is 10-20%, the beating current is 320-340A and the papermaking screening concentration is 0. 05%. The adsorption lining paper prepared through the invention has good air permeability, the polymer adsorption is uniform, the wet strength is high, particularly it is suited for one-time adsorption pet supplies, such as women's sanitary napkins, baby paper diaper and pet pad.

The invention discloses a preparation method of a tin oxide-graphene composite carbon film. The method comprises the steps of feeding ethylene glycol into graphene oxide water dispersion solution, evenly dispersing in an ultrasonic way, feeding a tin source and PVP, dissolving by stirring, and carrying out microwave heating; after reaction, cooling to the room temperature, carrying out suction filtration, washing by distilled water, and carrying out vacuum drying; and carrying out heat treatment to obtain the composite carbon film. In the reaction system, ethylene glycol is taken as not only a solvent but also a reducing agent, and the reduction products, namely oxalic acid and PVP, have the function of stabilizing the sizes of nano particles; a microwave way is used for heating, so that the temperature of the system is increased rapidly, and tin oxide particles with small sizes can be easily prepared; before the reaction, tin source ions are evenly absorbed on the surface of graphene oxide, so that the tin oxide particles in the product can be evenly distributed, oxidation hydrolysis of the tin source and the reduction of graphene oxide can be realized synchronously, and the components can be controlled. The prepared material is stable in structure, and can be directly used as an electrode for assembling a lithium ion battery after being simply cut.

The invention provides a radial oxygen production adsorption tower, belongs to the technical field of mechanical equipment, and solves the technical problems of too small height-diameter ratio, too large occupied floor space, non-uniform adsorption and the like in the prior art. The oxygen production adsorption tower comprises a cylindrical tower body, an gas inlet assembly disposed at the bottom of the tower body, an gas outlet assembly disposed at the top of the adsorption assembly, an adsorption assembly disposed in the tower body and a circular gas transportation cavity formed between the inner wall of the tower body and the outer wall of the adsorption wall, wherein the gas inlet assembly is provided with a circular gas vent disposed at the periphery of the lower end of the adsorption assembly; the circular gas vent is communicated with the gas transportation cavity; a gas flow can be transported to the adsorption assembly radially by the gas transportation cavity; two ends of the adsorption assembly are sealed; the center of the adsorption assembly is provided with a gas collection channel for collecting finished product oxygen; the lower end of the gas collection channel is sealed; and the upper end of the gas collection channel is communicated with the gas outlet assembly. The radial oxygen production adsorption tower has the advantages of uniform adsorption, high adsorption efficiency, small occupied floor space, large-scale designability, etc.