134 results about "Complex ions" patented technology

The invention belongs to the technical field of bioengineering medicines, and particularly relates to a gel dressing for repairing skin wounds and a preparation method of the gel dressing. The anti-fouling coating is prepared from the following raw materials in parts by weight: 65 to 75 parts of polyvinyl alcohol, 14 to 20 parts of sodium alginate, 4 to 8 parts of sodium carboxymethyl cellulose, 1 to 3 parts of sodium hyaluronate, 12 to 22 parts of glycerol, 1 to 3 parts of surface anti-fouling additive, 6 to 10 parts of antibacterial microcapsule and 2 to 2.8 parts of compound ion. According to the invention, a PVA freeze-thaw physical network and an alginic acid Ca / Zn composite ion network cooperate to limit a pore channel, so that stable forming is realized; a chitosan / sodium tripolyphosphate microcapsule is prepared from polyhexamethylene biguanide hydrochloride and covered with sodium alginate, release sensitive to pH / ionic strength, acceleration in an inflammation stage and self-limiting in a later stage are constructed, and long-acting bacteriostasis is formed by SA-Zn site slow release; the stability and staged adaptation are highlighted through processes such as encapsulation, low-shear doping and the like and raw material synergy.

The invention discloses a rapid enrichment-atomic absorption spectrum analysis method for low-content gold in gold ore, and relates to the technical field of gold ore analysis and detection.The rapid enrichment-atomic absorption spectrum analysis method comprises the following steps that an ore sample and a solid composite additive are mixed and roasted at the low temperature of 500-650 DEG C, and the additive contains alkali metal carbonate and zinc oxide; sulfur fixation, catalytic oxidation of organic carbon and stabilization of volatile elements can be synchronously realized; the method comprises the following steps: roasting gold-loaded activated carbon, dissolving the gold-loaded activated carbon in aqua regia to obtain a to-be-enriched solution, enabling the solution to pass through an adsorption column filled with modified activated carbon, pretreating the activated carbon with a 1-10% ammonium citrate solution to improve the selective adsorption capacity of the activated carbon on gold chloride complex ions, ashing the gold-loaded activated carbon, dissolving residues, fixing the volume, and measuring by using an atomic absorption spectrometry. According to the rapid enrichment-atomic absorption spectrum analysis method for the low-content gold in the gold ore, through cooperation of low-temperature roasting of the composite additive and selective adsorption of the modified activated carbon, the decomposition efficiency and enrichment selectivity of the ore difficult to treat are improved.

The present invention provides a method for preparing silver-coated copper powder, which relates to the technical field of metal powder preparation. This preparation method directly prepares a copper core by chemical reduction method, then uses electroless plating method to grow a silver layer on its surface, and finally uses jet milling to improve the density of the powder. In the present invention, reducing agents with different reduction effects are added twice to reduce copper sulfate, which reduces the initial reaction rate, makes the whole reaction stable, and improves the sphericity of copper crystal nuclei. At the same time, sulfate radicals in the reaction system can form silver sulfate precipitation with silver ions in the subsequent reaction, further slowing down the reduction rate of silver ammonia complex ions and enabling the dense growth of the silver layer. At the same time, the unreacted completely glucose remaining in the reaction system can continue to reduce silver ammonia complex ions when silver ammonia solution is added dropwise later. By strictly controlling the growth rate of silver powder from crystal seeds to particles, the present invention reduces the structural defects caused by rapid growth and improves the performance of the final product.

The application discloses a method for selectively extracting fluorine from a fluorine-containing aqueous solution based on complex extraction, which comprises the following steps: (1) adding a fluorine complex cation to the fluorine-containing aqueous solution to obtain a solution containing metal-fluorine complex ions; and (2) mixing a saponified organic phase with the solution containing the metal-fluorine complex ions and separating phases to obtain a fluorine-loaded organic phase and a raffinate after fluorine removal. The method can achieve the purpose of deep fluorine removal.

The invention provides a method for recovering rhodium in organic residual liquid containing triphenylphosphine / phosphine oxide, and relates to the technical field of precious metal recovery, and the method comprises the following steps: S1, carrying out reduced pressure rectification on the organic residual liquid containing triphenylphosphine / phosphine oxide to remove volatile components until the indexes of the residual liquid meet the feeding requirements of a subsequent process, and collecting light components for independent storage; s2, adding an acidic medium into the organic phase after light component removal, stirring and heating, introducing an oxidizing agent to carry out oxidation-complexation reaction, maintaining reaction conditions until the reaction is complete, standing for phase splitting, and collecting a water phase containing rhodium complex ions; according to the method, a core process combining oxidation-chlorination transfer and anion exchange adsorption is adopted, and key parameters of each process are accurately controlled, so that the rhodium recovery rate is stabilized at 95% or above, the rhodium content in the residual liquid can be reduced to 5 ppm or below, the industrial emission standard is completely met, and compared with the prior art, the resource recovery efficiency is greatly improved, and the cost is reduced. And waste of precious metal resources is effectively reduced.

The invention provides a lead zincate niobate-lead zirconate titanate based perovskite ceramic material and a preparation method thereof, the general formula of the chemical composition of the perovskite ceramic material is (1-x) Pb [(Zn1 / 3Nb2 / 3) 0.3 (Zr1 / 2Ti1 / 2) 0.7] O3-xBi (Zn1 / 2Ti1 / 2) O3, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, 0.015 lt, xlt; 1; a Bi (Zn1 / 2Ti1 / 2) O3 component is introduced into a lead zincate niobate-lead zirconate titanate matrix, local structure distortion is formed in a perovskite structure by utilizing the high polarizability of Bi < 3 + > and the synergistic effect of (Zn1 / 2Ti1 / 2) < 3 + > composite ions, and meanwhile, a long-range ordered perovskite framework is kept; wherein lead zincate niobate-lead zirconate titanate is used as a matrix to provide a high piezoelectric basis, and due to the introduction of Bi (Zn1 / 2Ti1 / 2) O3, a high Curie temperature is kept through a hardness-like effect, so that the material shows more comprehensive and excellent piezoelectric constant and coercive field and excellent wide-temperature piezoelectric thermal stability compared with commercial soft / hard piezoelectric ceramics.

The invention particularly discloses a preparation method and application of a composite ion exchange membrane. The composite ion exchange membrane is prepared from the following components in parts by weight: 95 to 110 parts of perfluorinated sulfonic acid resin, 5 to 8 parts of functionalized multi-walled carbon nanotubes, 10 to 15 parts of phosphotungstic acid, 1 to 1.8 parts of cerium-tannin complex, 12 to 20 parts of polyphenylene sulfide enhanced net, 30 to 40 parts of sulfonated polyether ether ketone solution, 3 to 5 parts of MXene-silicotungstic acid compound and 1 to 3 parts of polyethyleneimine cross-linking agent. The preparation method comprises the following steps: preparing the functionalized multi-walled carbon nanotube and the cerium-tannin complex; blending the perfluorinated sulfonic acid resin and the functional filler to prepare a membrane casting solution, and coating to form a membrane; a PPS reinforced net and an SPEEK solution are subjected to composite reinforcement, the PPS reinforced net and the SPEEK solution are subjected to PEI crosslinking and then superposed with the membrane, an MXene-silicotungstic acid compound is sprayed on the surface, and the composite ion exchange membrane is obtained through hot pressing and acid activation, has high proton conductivity and excellent mechanical strength and chemical stability and can be applied to a proton exchange membrane electrolytic cell and an all-vanadium redox flow battery.

The present application belongs to the technical field of pharmaceutical preparation, and relates to an electrolytic silver ion solution capable of completely inactivating HIV and a preparation method thereof. The electrolytic silver ion solution uses ultrapure water as a solvent, and contains divalent silver ions, a complexing agent and a complexing agent in the electrolytic silver ion solution. The complexing agent is hexamethylenetetramine capable of forming a stable complex with silver ions and capable of quantitatively analyzing the concentration of silver ions. The hexamethylenetetramine is of an analytical purity grade. The complexing agent is ethylenediamine capable of forming a more stable silver-ammonia complex ion, i.e., diammine silver, and capable of doubling the concentration of the generated silver-ammonia complex ion. The concentration of the divalent silver ions is 200-300 mg.kg ‑1 -1; the highest concentration of the complexing agent is 0.9 g.kg ‑1 -1; and the highest concentration of the complexing agent is 0.55 g.kg ‑1 The complexing agent and the complexing agent of the present application have a small dosage, a high relative ratio of silver ions and a stronger activity, and the inactivation rate of HIV is as high as 99.993%.

The invention relates to the technical field of biological metallurgy, in particular to an enhanced leaching method of jorusite. The enhanced leaching method of the jorlybdenum ore comprises the following steps: mixing a liquid phase system containing Fe < 2 + > and a bacterial liquid system formed by acidophilic thiobacillus ferrooxidans with nitrite to obtain a mixed system; then mixing with jorlybdenum ore to obtain a first system; adjusting the pH value of the first system by using an acid solution, and then carrying out oscillation treatment; the concentration of the nitrite in the mixed system is 40-60 mmol / L. According to the enhanced leaching method of the jorlybdenum ore, the complex metabolic process of acidophilic thiobacillus ferrooxidans is combined with nitrite enhanced biological leaching, nitric acid generated by metabolism of the acidophilic thiobacillus ferrooxidans provides acid for molybdenum dissolution of the jorlybdenum ore, generated Fe < 3 + > can be subjected to oxidation-reduction reaction with MoS2 to form stable complex ions [MoO4] < 2->, and the stable complex ions [MoO4] < 2-> are subjected to oxidation-reduction reaction with MoS2. The nitric acid can reinforce the dissolution and leaching of Mo from mineral jorlybdenum ore, so that the leaching effect of Mo is improved.

The objective of the present invention is to provide a chemical treatment liquid capable of forming a coating having improved corrosion resistance. The present invention relates to a chemical treatment liquid containing a water-soluble titanium complex ion, a water-soluble vanadium-containing ion, and a fluorine ion, wherein the concentration of the fluorine ion is 1.2 g / L or more.

The invention discloses a zirconium-cerium composite ion modified sodium bismuth titanate-based dielectric energy storage ceramic material and a preparation method thereof, the chemical general formula of the ceramic material is (Bi < 0.5 > Na < 0.5 >) < 0.65 > (Ba < 0.3 > Sr < 0.7 >) < 0.35 > Ti < 1-x > (Zr < 0.8 > Ce < 0.2 >) < x > O < 3 >, and x is greater than or equal to 0.01 and less than or equal to 0.12. The composite ion (Zr0. 8Ce0. 2) < 4 + > is introduced to equivalently replace Ti < 4 + > ions at the B site in (Bi0. 5Na0. 5) 0.65 (Ba0. 3Sr0. 7) 0.35 TiO3, so that the density of crystal grains is effectively improved, the breakdown field strength of the ceramic is remarkably improved, a slender ferroelectric hysteresis loop is obtained, and excellent energy storage performance and dielectric temperature stability are obtained under a low electric field. According to the invention, the difficulty of low energy storage density under a low electric field is broken through, the preparation process is simple and easy to operate, the performance stability is better, and the development requirements of miniaturization and integration of current electronic products are met.

The present invention discloses a method for preparing a polytetrafluoroethylene (PTFE) flexible conductive circuit. The method first utilizes the synergistic effect of the chemical etching effect of a relatively low-concentration sodium naphthalene treatment solution and the etching effect of an ultraviolet pulsed laser to achieve good hydrophilic wetting properties in the laser-etched circuit pattern area, while hydrophobicity is exhibited outside the laser-etched circuit pattern. After laser etching, a metal ion or metal complex ion activation solution is coated on the surface of the PTFE flexible substrate. The activation solution rapidly wets the laser-etched circuit pattern. Finally, the polytetrafluoroethylene (PTFE) flexible conductive circuit is prepared through chemical plating. This method solves the problems in the prior art of preparing PTFE flexible conductive circuits, such as the difficulty in achieving the desired result, the harsh preparation conditions, the complex process steps, and the low industrial application value.

The present application relates to the technical field of catalytic materials, and discloses a halloysite nanotube loaded palladium-platinum bimetallic alloy catalyst and a preparation method thereof, the catalyst comprising heat pretreated halloysite and uniformly dispersed palladium-platinum bimetallic alloy particles, and the mass ratio of palladium, platinum and heat pretreated halloysite being 0.012-0.022:0.012-0.022:1. The preparation method comprises mixing the heat pretreated halloysite with palladium chloride and chloroplatinic acid hexahydrate, adding concentrated ammonia water to adjust the pH to 9-11 to form an ammonia complex; obtaining a precursor through a hydrothermal reaction, and adding sodium borohydride for liquid phase reduction. The bimetallic alloy phase produces geometric and electronic synergistic effects, thereby reducing the reaction activation energy; the ammonia complex ion is chemically bonded with the hydroxyl group of the carrier to prevent the loss of active components in the hydrothermal environment. The catalyst is combined with glycerol to produce hydrogen in situ, thereby avoiding the safety hazards and equipment investment of external high-pressure hydrogenation, and realizing the high-yield conversion of green diesel under extremely low noble metal loading.

This invention provides a scale inhibitor and its preparation method. The scale inhibitor is used for phosphogypsum leachate in a reverse osmosis membrane system. The scale inhibitor comprises the following raw materials in parts by weight: 10%-20% aluminum compound, 5%-10% organophosphonic acid, 2%-5% anionic surfactant, 4%-10% solvent, and the remainder is purified water. This addresses the problem of scaling in phosphogypsum leachate in reverse osmosis membrane systems by existing commercially available scale inhibitors, which suffer from poor targeting and scale inhibition effects. This invention introduces an aluminum compound, in which Al... 3+ It will react with silicon in a competitive manner with fluorine, from SiF6 2‑ Complex ions replace silicon to form acid-soluble AlF₂. x 3‑x Complexing ions cause SiF6 in the phosphogypsum leachate to form complex ions. 2‑ Reduce or inhibit SiF6 2‑ This reduces or inhibits the formation of potassium / sodium fluorosilicate scale.

The invention relates to the technical field of analysis and test technologies and medical methods, and discloses a reagent and a method for molecular structure analysis of an estrogen isomer, which are based on cyclodextrin and are used for molecular structure analysis of an alpha / beta-E2 / E3 isomer. The reagent comprises gamma cyclodextrin (gamma-CD), beta-CD and a mixed aqueous solution of compounds containing different metal ion ligands, the molecular formula of the beta-CD is C42H70O35, the molecular weight of the beta-CD is 1134.98, and the compound containing the metal ions is salt of any metal ion or soluble alkali containing the metal ions. According to the method, an alpha / beta-E2 / E3 sample, CD, a compound containing metal ions, such as monovalent metal or divalent metal ions and the like are simply prepared into a mixed solution, then non-covalent compound ions of alpha / beta-E2 / E3-gamma-CD / beta-CD-containing metal ions are generated by utilizing electrospray ionization, and then the ion mobility spectrometry of the non-covalent compound ions is measured by utilizing an ion mobility spectrometry technology. And different position structure information of alpha / beta-E2 / E3 molecules can be obtained.

The present invention discloses a method for preparing an interface diffusion-resistant accident-resistant Mo / Pt / nano-Cr / Cr multilayer composite coating, comprising the following steps: 1. cleaning and clamping a workpiece; 2. composite ion cleaning of the workpiece surface; 3. preparation of a Mo diffusion-resistant layer; 4. preparation of a Pt diffusion-resistant layer; 5. preparation of a nano-Cr layer; 6. preparation of a Cr coating; 7. preparation of a nano-Cr / Cr multilayer composite coating, and obtaining a Mo / Pt / nano-Cr / Cr multilayer composite coating on the surface of a zirconium alloy cladding. The present invention suppresses the bidirectional diffusion of Zr and Cr by prefabricating a highly chemically inert Mo / Pt layer on the surface of a Zr substrate, thereby ensuring the interface stability of the coating under service conditions, and improving the overall consistency and structural density of the coating through a multilayer composite structure of ion implantation and a Cr deposition layer, thereby obtaining an interface integrated coating, which meets the requirements of the zirconium alloy cladding for the corrosion resistance of the coating under nuclear working conditions.

The invention belongs to the field of material surface treatment engineering, and provides a micro-arc oxidation method of titanium-based sewage disposal equipment, which comprises the following steps: carrying out micro-arc oxidation treatment by taking copper pyrophosphate complex ions as a copper source, a titanium-based workpiece as an anode and an inert electrode as a cathode, and carrying out micro-arc oxidation treatment by controlling the pH value of electrolyte to be 8.5-8.8, the copper pyrophosphate complex ions stably exist in the electrolyte in the form of ions, and move towards the anode under an external electric field, so that a micro-arc oxidation film layer with high copper doping amount is formed on the surface of the copper pyrophosphate complex ions, and the micro-arc oxidation film layer has good corrosion resistance and antifouling performance. According to the method, the anti-fouling performance of the micro-arc oxidation film layer can be improved, and wide application of the titanium-based component in a blow-off pipeline system is promoted.

The application discloses a temperature response positive charge type nano-fertilizer delivery system, and belongs to the technical field of fertilizers. The delivery system is a regular circular core-shell structure with an average particle size of 80-120 nm, and is formed by encapsulating complex ions formed by humic acid and trivalent iron ions, with a positive polymer (PDMAEMA-b-PCL) as a carrier. The average Zeta potential range of the delivery system is 25-32 mV. The delivery system utilizes a temperature response unit to intelligently regulate and control surface charges. At normal temperature, the high positive charge of the delivery system can be strongly adsorbed on the surface of the negatively charged leaf, so that the deposition uniformity and the anti-scouring property are improved. After deposition, the environmental temperature is increased to trigger the in-situ reduction of the charge, so that the absorption barrier is broken, and the uptake capacity of the leaf for nutrients is optimized. Compared with other nano-fertilizers and commercially available fertilizers, the application has more excellent effects on promoting seed germination and crop growth and development, and crops show good concentration dependence, which proves the efficiency and application safety of the application.

The application discloses an antibacterial temperature-regulating fabric and a preparation method thereof. The method comprises the following steps: reacting a silver ion solution with a reducing agent to obtain silver complex ions, and then reacting the silver complex ions with graphene oxide to obtain a nanocomposite AGO; preparing a silica and titanium dioxide suspension, mixing the two uniformly, and then preparing SiO2 / TiO2 by a hydrothermal method; preparing AGO electrospinning liquid by mixing the nanocomposite AGO and polyacrylonitrile, and then spinning a fiber layer on the AGO electrospinning liquid by an electrospinning method to obtain an Ag / GO@PAN layer; preparing SiO2 / TiO2 electrospinning liquid by mixing the SiO2 / TiO2 and polyacrylonitrile, and then spinning a second fiber layer SiO2 / TiO2@PAN on the surface of the Ag / GO@PAN layer by the electrospinning method to obtain an Ag / GO@SiO2 / TiO2@PAN fabric. The fabric prepared by the application realizes two-way temperature regulation of intelligent fabric radiation refrigeration daytime temperature drop and passive radiation heat preservation, and has good antibacterial property.

This invention relates to the field of ceramic materials and provides a method for preparing silicon nitride powder, solving the problem of high residual chlorine / oxygen impurities due to the difficulty in removing byproducts during the preparation of silicon nitride in existing technologies. The method includes the following steps: S1, constructing an electrochemical cell: the anode material is a high-purity single-crystal silicon wafer; the cathode material is a graphite plate; the electrolyte is a mixed solvent of liquid ammonia and ethylenediamine with added LiCl electrolyte; S2, electrochemical ammonolysis reaction: under the action of an electric field, the silicon anode is oxidized to generate high-valence silicon-ammonia complex ions; the NH2 released from the liquid ammonia... ‑ The precursor migrates and combines towards the anode to generate a silane precursor containing Si-NH2 bonds; S3, the precursor is purified by washing with liquid ammonia, replacing with organic solvent and drying at low temperature; S4, the precursor is subjected to low-temperature pre-decomposition and high-temperature crystallization treatment under nitrogen protection to obtain high-purity α-Si3N4.

The invention belongs to the technical field of platinum metal recovery and extraction, and provides a method for recovering and extracting platinum from a platinum-containing catalyst of a waste automobile in order to solve the problem that the traditional wet method is poor in platinum selectivity. A to-be-treated waste automobile platinum-containing catalyst is subjected to roasting, alkali treatment, leaching, first extraction, second extraction, reverse extraction, platinum precipitation and reduction treatment to obtain a finished product platinum, an amide imidazole extraction agent is used in the second extraction and is generated by reacting an amide derivative containing a pyridine ring with imidazole cation salt, cations of the amide imidazole extraction agent are combined with negative complex ions of platinum through electrostatic adsorption, and the platinum-containing catalyst is obtained. Negative ion pyridine ring nitrogen atoms and platinum ions form specific coordination, and selective recognition of platinum and rejection of interfering ions are realized through dual effects; meanwhile, the extraction agent improves the acid resistance through amido bonds, is matched with imidazole cations to reduce the cost, cooperates with pre-extraction impurity removal and an anti-emulsification system, enhances the separation capacity, prepares high-purity platinum and improves the recovery efficiency.

The invention discloses a micro alien soil matrix and a preparation method and application thereof, and the preparation method comprises the following steps: adding organic matters, metal complex ions, fertilizers, urea hydrolase inhibitors and adhesives into soil, and uniformly mixing to obtain micro alien soil aggregates, namely the micro alien soil matrix; seeds of a salt-alkali-tolerant pioneer plant variety are put into the micro soil replacement matrix to obtain seeds wrapped by the micro soil replacement matrix, and then the seeds are sown in soil to be treated. According to the method, the urea hydrolase inhibitor is used for improving the micro alien soil, the improved micro alien soil matrix is used for saline-alkali soil vegetation restoration, the improved micro alien soil matrix creates an excellent microenvironment for seed germination, nutrients and a good structure required by plant growth are provided, germination and growth of pioneer plant seeds are promoted, and the survival rate of saline-alkali soil is increased. The ecological environment of the saline-alkali soil is improved.

The application discloses a preparation and application of a high-selectivity composite ion conductive membrane, and a preparation method thereof is as follows: dissolving PVDF powder in an organic solvent, adding a pore-forming agent, immersing the obtained membrane in water after casting the membrane, taking out the membrane and drying the membrane to obtain a porous substrate; mixing an HPA solution and a MXene dispersion liquid, adjusting the pH to be acidic, and obtaining a MXene-HPA composite after heating and stirring; dispersing sulfonated polyether ether ketone and the MXene-HPA composite in an organic solvent to obtain a third mixed liquid, coating the third mixed liquid on the surface of the porous substrate, and drying to obtain an intermediate; and immersing the intermediate in a PEI cross-linking liquid to obtain the composite ion conductive membrane. The composite ion conductive membrane prepared on the basis of SPEEK has a low vanadium permeation rate, and meanwhile, the problem of low proton conduction capacity of the SPEEK membrane is overcome. The all-vanadium redox flow battery assembled on the basis of the composite ion conductive membrane has excellent cycle capacity retention.

The present application relates to an organic selenium nutrient solution for crops and a preparation method thereof. The nutrient solution comprises, by mass percentage, selenomethionine 0.1-0.5%, complex amino acids 2.0-5.0%, potassium humate 1.0-3.0%, plant extracts 0.5-1.0%, EDTA chelated calcium, magnesium and zinc 0.05-0.5%, potassium sorbate 0.05-0.2%, and purified water as the remainder. Preferably, the selenomethionine is L-type selenomethionine with a three-layer coating, the inner layer of which is formed by cross-linking chitosan and citric acid, the middle layer is hydroxypropyl methyl cellulose, and the outer layer is a sodium alginate-gelatin matrix cross-linked by Ca 2+ / Zn 2+ complex ions. The preparation method comprises adding and chelating each component under specific pH conditions, and stabilizing to form a stable multi-component synergistic system. The nutrient solution has the advantages of high bioavailability, good controlled release performance, high plant absorption efficiency, and strong component stability.

The invention belongs to the field of electrochemical energy devices, and discloses a composite ion conduction membrane for improving ion selective conduction performance through interface design and a preparation method thereof.The preparation method comprises the steps that sulfonated polyether ether ketone and an organic solvent are mixed and then filtered, and a membrane casting solution A is obtained; the membrane casting solution A is subjected to membrane forming, and the sulfonated polyether ether ketone membrane is obtained; mixing sulfonated polybenzimidazole, polyethylene glycol diglycidyl ether and an organic solvent, and filtering to obtain a membrane casting solution B; the molar ratio of sulfonated polybenzimidazole to polyethylene glycol diglycidyl ether is (1000: 1)-(10: 1); and dropwise adding the membrane casting solution B to a sulfonated polyether-ether-ketone membrane on which the membrane is formed, and further forming the membrane to obtain the sulfonated polyether-ether-ketone / sulfonated polybenzimidazole double-layer composite ion conduction membrane. Through a layer-by-layer assembly method, a molecular-level uniform composite membrane interface structure is formed by utilizing an interface mutual dissolution effect induced by a solvent, so that the compatibility of an interface is improved, and collaborative optimization of proton conduction and vanadium ion barrier is realized.

The application provides a composite hydrogel lithium ion sieve and a preparation method thereof, and belongs to the technical field of lithium ion sieve adsorption.The active component of the ion sieve is H2TiO3, the binder is polyacrylamide PAM, and the ion sieve is uniformly dispersed in the polyacrylamide.The composite lithium ion sieve is used for selective adsorption extraction of lithium ions in low-concentration geothermal water, oil and gas field water, salt lake brine and seawater.The H2TiO3@PAM composite lithium ion sieve provided by the application has the advantages of high adsorption capacity, good ion sieve structure stability, high selectivity for salt lake brine with a high magnesium-lithium ratio, easy separation of the composite ion sieve from a liquid solution, good regeneration repeatability, and good industrial application prospect.

This invention discloses a method for the membrane electrolytic refining of crude antimony based on a tartaric acid system, relating to the field of metal purification technology. The method includes: preparing an antimony tartrate solution, controlling the antimony ion concentration to 30–55 g / L and the tartrate ion concentration to 230–270 g / L, so that the antimony ions exist as negatively charged complex ions. After settling and filtration, crude antimony is used as the anode and a stainless steel plate as the cathode, at a current density of 200–250 A / m. 2 Pre-electrolysis is performed at 25–55°C to achieve deep purification of the solution; then, anion exchange membranes are used to separate the anode and cathode chambers, allowing only negatively charged ions to pass through; finally, the clean solution obtained from pre-electrolysis is used as the initial electrolyte, and the solution is purified at a current density of 50–200 A / m³. 2 Electrolytic refining at 25~55℃. This invention enables electrolytic refining over a wide current density range (50~250 A / m). 2 It operates stably for a long time within a temperature range (15~55 ℃), and obtains high-quality refined antimony products with dense crystals, smooth surfaces and excellent morphology on stainless steel cathode plates, realizing efficient and low-pollution electrolytic refining of crude antimony under the green tartaric acid system.

The invention discloses a zirconium-tin composite ion modified sodium bismuth titanate-based dielectric energy storage ceramic material and a preparation method thereof, the chemical general formula of the ceramic material is (Bi < 0.5 > Na < 0.5 >) < 0.65 > (Ba < 0.3 > Sr < 0.7 >) < 0.35 > Ti < 1-x > (Zr < 0.8 > Sn < 0.2 >) < x > O < 3 >, and x is greater than or equal to 0.01 and less than or equal to 0.10. The composite ion (Zr0. 8Sn0. 2) < 4 + > is introduced to equivalently replace Ti < 4 + > ions at the B site in (Bi0. 5Na0. 5) 0.65 (Ba0. 3Sr0. 7) 0.35 TiO3, so that the density of crystal grains is effectively improved, the breakdown field strength of the ceramic is remarkably improved, a slender ferroelectric hysteresis loop is obtained, and excellent energy storage performance and dielectric temperature stability are obtained under a low electric field. According to the invention, the difficulty of low energy storage density under a low electric field is broken through, the preparation process is simple and easy to operate, the performance stability is better, and the development requirements of miniaturization and integration of current electronic products are met.

The invention belongs to the field of microwave dielectric ceramic materials, and particularly provides ZnNb2O6-based (Ti1 / 2W1 / 2) 5 + substituted Nb < 5 + > microwave dielectric ceramic and a preparation method thereof.A ZnNb2O6 system is adopted, and (Ti1 / 2W1 / 2) 5 + is introduced to replace Nb < 5 + >, so that the polarizability and lattice energy of the material are improved, the deformation quantity of an average oxygen octahedron is reduced, the grain boundary and grain are optimized, and the microwave dielectric ceramic has the advantages that the microwave dielectric ceramic is used for replacing Nb < 5 + > with Ti1 / 2W1 / 2) 5 +; therefore, the dielectric constant, quality factor and temperature stability of the material are improved. By introducing composite ions, the temperature coefficient is changed through interaction between the ions, and the frequency temperature stability is further improved; the microwave dielectric ceramic material with the dielectric constant of 24, Q * f = 120000 GHz and tau f =-100 ppm / DEG C is obtained, and the microwave dielectric ceramic material can be used in the fields of filters, antennas, resonant cavities and the like.

To provide a method for producing a fluorine-containing compound, hardly causing an anode effect when producing the fluorine-containing compound such as fluorine gas by electrolyzing an electrolytic solution.SOLUTION: The method for producing a fluorine-containing compound includes an electrolysis step of electrolyzing an electrolytic solution using an anode and a cathode to produce a fluorine-containing compound. The electrolytic solution contains hydrogen fluoride, a metal fluoride, and a complex ion represented by the chemical formula [MXn] m -. In the chemical formula [MXn] m -, M represents an ion of a d-block element having 4 or more and 8 or less electrons in the outermost d-orbital, X represents a halogen atom, m representing the valence of the complex ion is an integer of 1 or more and 5 or less, and n representing the number of X's is an integer of 2 or more and 10 or less.SELECTED DRAWING: None