40results about How to "Increased ion exchange rate" patented technology

The invention provides a composite isolation membrane for a lithium-ion battery. The composite isolation membrane is characterized in that various component materials required by the isolation membrane are stirred in a ketone or carboxylate organic solvent in vacuum to prepare isolation membrane paste, and a membrane layer of which the thickness is 20-100 microns is directly prepared on a mylar film carrier or a positive plate or a negative plate of the battery by adopting a wet roller scraping and continuous coating method. The isolation membrane provided by the invention has unique combination of high porosity and high distortion; a resistance value of the prepared lithium battery is lower than those of other batteries in the industry, generated heat is low when the battery works at high power and the performance of the power battery is expected to be improved to that of a new generation.

The invention discloses a preparation method of polystyrene anion-type ion exchange resin. The method comprises the following steps: deionized water, polyvinyl alcohol, gelatin, sodium chloride and sodium persulfate are well mixed, such that an aqueous phase is obtained; p-chlorostyrene, divinyl benzene, a pore-foaming agent and benzoyl peroxide are added, and the mixture is well mixed; the temperature is increased to 70-80 DEG C, and a reaction is carried out for 3-5h; a reaction is carried out for 4-8h under a temperature of 85-90 DEG C; a reaction is carried out for 0.3-1h under a temperature of 92-98 DEG C; washing, filtering, drying and sieving are carried out, such that polystyrene microspheres are obtained; the polystyrene microspheres are well mixed with 1,4-dichloromethoxybutane; phosphorus pentoxide is added, and a reaction is carried out for 5-10h under a temperature of 30-40 DEG C; filtering and washing are carried out, such that chloromethylated microspheres are obtained; the chloromethylated microspheres added into N,N-dimethylformamide; dimethylethanolamine is added; the temperature is increased to 40-45 DEG C and a reaction is carried out for 6-9h; and washing is carried out, such that the polystyrene anion-type ion exchange resin is obtained.

The invention discloses a preparation method of a composite molecular sieve defluorinating agent. The composite molecular sieve defluorinating agent is prepared from raw materials including aluminum chloride, an ethoxypropoxy three-block polymer F127, calcium nitrate, sodium metaaluminate, sodium silicate, silver nitrate and the like. According to the preparation method disclosed by the invention,a calcium and aluminum oxide compound is prepared through immersion and high-temperature calcination; semi-dry gel is prepared through suction filtering to produce a molecular sieve; the solid content in a reaction kettle is improved and the production energy consumption of molecular sieve with the unit mass is reduced; after being combined, the calcium and aluminum oxide compound and the molecular sieve have ultra-strong affinity on fluorine ions; protonation and deprotonation on hydroxyl on the surface also have a promotion effect on adsorption of the fluorine ions; under a high-temperaturecondition, part of the defluorinating agent is thermally decomposed so that a lot of active sites and hydroxyl groups are generated on the surface of an adsorbent; the defluorinating agent can be subjected to ion exchange with the fluorine ions so that the fluorine ions are enriched on the surface of the adsorbent and the aim of removing the fluorine ions is realized.

The invention discloses a preparation method of a molecular sieve type soil repairing agent. The molecular sieve type soil repairing agent is prepared from diatomite, rice straw, sodium metaaluminate,water glass, silver nitrate and other raw materials. The diatomite and the straw are mixed and subjected to alkali treatment, then the surfaces of particles become concave-convex non-smooth structures, and adsorption sites are greatly increased; semi-dried gel is prepared through suction filtration to produce a molecular sieve, the solid content in a reaction kettle is increased, the unit mass molecular sieve production energy consumption is reduced, a finally obtained composite material is subjected to steam ageing and high-temperature activation, the size of internal pores of the particlesis increased, heavy metal ions and organic macromolecules can be adsorbed and immobilized, the adsorption capacity is improved, the purpose of low-cost pollution restoration of the soil by people canbe achieved, and the method has good economic and environmental benefits.

In the present invention, characteristics specific to all kinds of natural mineral and metal are analyzed by a magnetic resonance analyzer. The natural mineral and metal are combined and ground into powder and made into a lead plate, ceramic and a separator of a lead-acid accumulator to produce an undulation frequency and change a molecule structure of an electrolyte, thereby accelerating an ion exchange rate, speeding up a charging rate, increasing a conversion rate, decreasing stacking of lead sulfate crystalloids, reducing a corrosion rate of a positive electrode lattice body and extending a lifetime of use of the lead-acid accumulator.

There is provided a method for deionizing a decomposition produced solution resulting from decomposition of a polyester by ethylene glycol. The ester interchange reaction and hydrolysis reaction along with cation removing treatment of a decomposition product resulting from decomposition of a polyester by ethylene glycol are suppressed. Thereby, a method for deionizing the decomposition produced solution with small reductions in yield and purity can be provided.

The invention discloses a method for preparing a photocatalytic composite modified molecular sieve. The photocatalytic composite modified molecular sieve is prepared from tetrabutyl titanate, anhydrous ethanol, an alkaline solution, sodium metaaluminate, water glass and silver nitrate. Suction filtration is carried out to prepare semi-dry gel, and the semi-dry gel is used to produce the molecularsieve, so the solid content of a reaction kettle is improved, and the energy consumption in the production of per unit mass of the molecular sieve is reduced; the molecular sieve is modified with alkali, and the abundant meso-porous structures are introduced to the molecular sieve mainly based on micro-pores, so the load capacity of titanium dioxide is greatly improved; and a rich adsorption surface is used to increase the contact area of the titanium dioxide and pollutants, so the photocatalysis effect is efficiently completed, and the photocatalytic degradation of the pollutants is realized.

The invention discloses a method for preparing a molecular sieve type heavy metal curing agent. The molecular sieve type heavy metal curing agent is prepared from raw materials such as ferrochrome slag, monopotassium phosphate, tetramethyl-disilazane, sodium metaaluminate, sodium silicate and silver nitrate. According to the method, a molecular sieve is produced from half-dry gel through suction filtration, the solid content of a reaction kettle is increased, the production energy consumption of a unit mass molecular sieve is reduced, on the basis, silanization modification is implemented on the molecular sieve, and a calcium series phosphate chemical bonding material is introduced, so that on one hand, the static and dynamic water adsorption amount of the molecular sieve is reduced, the hydrophobicity of the molecular sieve is improved, and the situation that the heavy metal curing sites are reduced due to water adsorption is reduced, on the other hand, heavy metal ions are adsorbed through hydroxyapatite, ion exchange is implemented under the catalysis action of the molecular sieve, corresponding heavy metal phosphate is formed, and heavy metals are immobilized in an immobilizingagent efficiently for a long time.

The invention discloses a 3A molecular sieve and a processing technology thereof. The 3A molecular sieve is prepared by using kaolin as a raw material and directly reacting with lye after being calcined with salt, and specifically includes the following steps: mixing and calcining KC1 and kaolin to obtain an active Precursor mixture, then react the prepared mixture in lye, make K during the formation of 4A molecular sieve ⁺ directly with Na ⁺ The exchange effect occurs, and the 3A molecular sieve is directly obtained in one step. The present invention explores a simple method for directly synthesizing molecular sieves from cheap raw materials, and at the same time avoids the complex process of preparing 4A molecular sieves first and then preparing them by ion exchange in the traditional synthesis method.

The invention belongs to the technical field of bipolar membranes, and discloses a preparation method of a bipolar membrane. The method comprises the following steps: blending at least one of an ethylene-propylene copolymer, an ethylene-butylene copolymer and an ethylene-octene copolymer with polypropylene, heating, mixing, granulating, drying, and casting to obtain a raw material membrane; immersing the raw material membrane into an irradiation solution formed by mixing absolute ethyl alcohol, a styrene monomer and a divinylbenzene monomer, and carrying out constant-temperature irradiation grafting by using 60Co gamma rays at -5-15 DEG C to obtain a base membrane; introducing anion/cation exchange groups into two sides of the base membrane respectively, soaking the base membrane into sulfuric acid for heating sulfonation at 75 DEG C by taking silver sulfate as a catalyst on one side through a covering protection method, and hydrolyzing to form a cation membrane layer after reaction ina reaction kettle; and adding chloromethyl ether into the other side of the bipolar membrane at 45 DEG C by taking stannic chloride as a catalyst, carrying out chloromethylation, and then immersing the bipolar membrane into a mixed aqueous solution of trimethylamine and polyethylene glycol at 40 DEG C to carry out quaternization reaction to form a negative membrane layer so as to obtain the bipolar membrane.

The invention discloses an aluminum tailing slag improvement method based on ion exchange and cross-linking reaction, and belongs to the field of soil regulating materials or soil stabilizing materials. Aiming at the technical problems of insufficient strength and serious alkali pollution of the aluminum tailing slag, the invention provides a aluminum tailing slag modifier and aluminum tailing slag modifying steps. The aluminum tailing slag modifier comprises an alkali reduction curing agent, an ion exchange stabilizer and a particle linkage curing agent. The aluminum tailing slag modifying steps are the steps of of how to quantitatively use the aluminum tailing slag modifier. According to the aluminum tailing slag improvement method based on ion exchange and cross-linking reaction, the solidification of the aluminum tailing slag is promoted, the compactness of the aluminum tailing slag is improved, the aluminum tailing slag becomes a stable and continuous solid, and the strength of the aluminum tailing slag is obviously improved. And moreover, the alkalinity of the aluminum tailing slag is reduced, and the pollution to the environment is reduced.