26 results about "Complex ions" patented technology

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 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.

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.

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.

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.

This invention discloses an ion-electronic device, its fabrication method, and its applications. The ion-electronic device comprises a polymer hydrogel matrix and an organic framework material embedded therein, including anion-selective framework materials and cation-selective framework materials. The ion-electronic device of this invention constructs a microstructure with a periodic electrostatic potential field, overcoming the problem of complex ion transport paths and reduced efficiency caused by the disordered microstructures of traditional ion conductors. The organic framework material simulates the function of the lattice potential field in a semiconductor within an organic molecular system. Through the spatial confinement effect of the ordered periodic structure and the synergistic effect of the electrostatic field, it can achieve highly selective transport of specific charged ions, thereby significantly improving the efficiency and selectivity of ion transport.

This invention relates to the field of piezoelectric ceramics technology, and in particular to a composite ion-modified bismuth layered bismuth titanate calcium-based high-temperature piezoelectric ceramic and its preparation method. The general formula for high-temperature piezoelectric ceramics is: Ca 1‑x (LiCe) x / 2 Bi 3.75 Nd 0.25 Ti 3.935 Sc 0.065 O 15 , where x is a complex high-valence ion (LiCe). 4+ Twice the molar amount, x = 0.02, 0.05, 0.08, 0.10. This invention employs the above-mentioned composite ion-modified bismuth layered bismuth titanate calcium-based high-temperature piezoelectric ceramic and its preparation method to meet the application requirements in high-temperature environments while ensuring the material's environmental friendliness.

The application of a long-chain nitrogen-containing organic cation salt compound in the aspect of being used as a platinum group metal precipitant and a platinum group metal recovery method belong to the technical field of recycling of secondary resources of noble metals.The platinum group metal precipitant is mixed with an aqueous solution containing platinum group metal (palladium, platinum, rhodium, iridium) chloride complex ions, and the electrostatic effect of the long-chain nitrogen-containing organic cation salt in the precipitant on the platinum group metal chloride complex ions and the hydrophobic effect of the alkyl chain are utilized to precipitate the platinum group metal ions, so that the corresponding platinum group metal is obtained through solid-liquid separation and calcination.The present application provides an effective recovery method, which significantly improves the recycling efficiency of noble metal resources.The present application solves the technical problems of high residual concentration of tail liquid metal and large amount of precipitant in the previous precipitation recovery process, has the advantages of high recovery efficiency of noble metal, simplified process flow, environmental friendliness, improved resource utilization rate and the like, and provides an innovative solution for efficient recycling of platinum group metal resources.

This invention provides a supercrystalline composite ion nitriding anti-corrosion metal pot, belonging to the technical field of metal pots. It includes a metal pot body and a handle connected to the pot body, with a detachable connection between them. The metal pot body includes a metal substrate layer. At least a portion of the outer and inner surfaces of the metal substrate layer are provided with a honeycomb structure layer obtained by plasma etching. A supercrystalline composite ion wear-resistant protective layer is provided on the honeycomb structure layer. This supercrystalline composite ion wear-resistant protective layer is formed by nitrogen atoms and titanium atoms penetrating into the pot surface and diffusing inwards. This invention reduces light cooking wear, extends the lifespan of the pot, and the integration of titanium ions into the crystal lattice optimizes the structure, enhances resistance to external forces, forms a corrosion-resistant barrier, resists water vapor, salt, and acid / alkali corrosion, ensures food safety and cooking stability, and significantly improves the performance of the pot, thus possessing certain practical value.

The application discloses high-purity anhydrous scandium fluoride and a preparation method thereof, and belongs to the field of rare earth fluoride preparation. The preparation method comprises the following steps: mixing scandium oxide and zinc fluoride by a mechanical activation treatment method to obtain mixed raw materials, using mechanical activation to induce crystal lattice defects, significantly improving the kinetic conditions of the solid-solid reaction process of scandium oxide and zinc fluoride, and making fluorination more sufficient; roasting the mixed raw materials under an inert atmosphere to obtain roasted materials; putting the roasted materials into a mixed leaching system containing ammonia and ammonium salt for selective leaching, and then filtering and separating to obtain a solid crude product; using an ammonia-ammonium salt complex system, using the high stability of Zn(NH3)4] 2+ complex ions to realize accurate separation of by-products Zn and main products ScF3; and washing and drying the solid crude product to obtain anhydrous scandium fluoride, with a content of 400 ppm or less and a fluorination rate of 99.99%.

The application relates to the field of electricity storage, in particular to a liquid low-temperature molten salt electrolyte which comprises anhydrous aluminum chloride, an organic ammonium halide and an inorganic salt additive, the organic ammonium halide is one of alkane ammonium halide, olefin halide or aromatic hydrocarbon halide, the inorganic salt additive is a chlorine salt, and the liquid low-temperature molten salt electrolyte is a transparent liquid at room temperature. The liquid low-temperature molten salt electrolyte has high conductivity, so that chloroaluminate complex ions and other chloroaluminate complexes can flow more smoothly in the liquid electrolyte, the energy conversion efficiency is improved, a battery using the electrolyte does not need a diaphragm and has no explosion risk, the battery structure is simplified, and the production cost is reduced.

The application belongs to the field of high polymer materials and functional materials, and particularly relates to a composite ion exchange membrane, a preparation method and application thereof. The composite ion exchange membrane disclosed by the embodiment of the application comprises 90-99.99% of ion exchange resin and 0.01-10% of cerium-based coordination polymer, in terms of mass percentage. The organic ligand in the cerium-based coordination polymer in the composite ion exchange membrane has better compatibility when it is blended with the ion exchange membrane, so that the composite ion exchange membrane has better chemical stability.

The application discloses a flexible ion transmembrane temperature sensor with superfast response speed and a preparation method thereof. A PVA aqueous solution and a PSSA composite ion solution are combined, spin-coated and solidified to form a PSSA / PVA double-layer structure, an AAO template ion channel is prepared at the interface, DMSO is introduced to construct an ion gradient, silver electrodes are deposited on both sides of the double-layer structure through magnetron sputtering, and a PDMS / vertical CNT array composite material is transferred to the surface of the electrodes to form an encapsulation layer, so that the flexible ion transmembrane temperature sensor with superfast response speed is prepared. The flexible ion transmembrane temperature sensor with superfast response speed prepared by the application has excellent response recovery speed, temperature sensing resolution and mechanical interference resistance.

The application provides a multi-metal ion doped prussian blue sodium salt material and a preparation method and application thereof, and relates to the technical field of sodium ions. x Mn a Fe b Co c Ni d Zn e [Fe(CN)6] y ·nH2O, formula I; wherein 0 ‑ The application provides a multi-metal doped prussian blue sodium salt material, which can exhibit excellent structural stability and electrochemical performance in a natural seawater electrolyte system, and especially in a complex ion environment with the presence of chloride ions (Cl ‑ ), effectively solves the problems of structural damage and capacity attenuation of existing prussian blue materials in a seawater environment.

This invention discloses a method for suppressing water migration in a zinc-iron flow battery by adjusting the volume ratio of the positive and negative electrolytes, belonging to the field of flow battery technology. The positive electrolyte of the zinc-iron flow battery is an alkaline solution of iron cyanide complex ions, and the negative electrolyte is an alkaline solution of zincate ions. The volume ratio of the positive to negative electrolyte is 0.5-5:1; preferably 1-4:1; more preferably 2-4:1. The alkalinity of both the positive and negative electrolytes is 0.05-5 mol / L. This invention can effectively suppress water migration during the operation of the zinc-iron flow battery, improve its lifespan, and reduce maintenance costs during battery operation.

The application provides a kind of H2TiO3@GO layered composite lithium ion sieve and a preparation method thereof, and belongs to the technical field of lithium ion sieve adsorption, characterized in that the active component of the ion sieve is the delithiated product H2TiO3 of the Li2TiO3 lithium ion sieve precursor, and the carrier is graphene oxide GO; the molar ratio of graphene oxide GO to H2TiO3 is (1.4-2.8):1; the crystal form of Li2TiO3 is the typical monoclinic crystal form β-Li2TiO3. The composite lithium ion sieve is used for selective adsorption and extraction of lithium ions in low-concentration geothermal water, salt lake brine and seawater. The H2TiO3@GO composite lithium ion sieve provided by the application has the advantages of fast adsorption rate, high adsorption capacity and good ion sieve structure stability, and the composite ion sieve is easy to separate from liquid solution, has good regeneration repeatability, and has good industrial application prospect.

The application discloses a mesoporous Al2O3-TiO2 sulfonated electrodialysis ion exchange membrane and a preparation method and application thereof, and belongs to the technical field of ion exchange membranes and resource recovery. The method innovatively adopts hydrothermal compounding to construct gradient mAl2O3-mTiO2 composite inorganic materials, and combines with an alkalinization-grafting-sulfonation modification process to prepare mAl2O3-mTiO2 / PVDF-g-PSSA composite ion exchange membranes. By adjusting the mass fraction of mAl2O3 (10% to 40%) and the doping ratio of the composite material (0.5% to 2.0%), the precise regulation of the membrane structure and performance is realized. The application has controllable process, and raw materials are easy to obtain. The obtained membrane material has wide adaptability and excellent comprehensive performance, and realizes efficient resourceization and closed-loop recovery of lithium sulfate waste liquid.

The present application relates to the field of electricity storage, and particularly relates to a liquid low-temperature molten salt electrolyte, which comprises anhydrous aluminum chloride, an organic ammonium halide and an inorganic salt additive, the organic ammonium halide is one of tetra-substituted alkane halide, tri-substituted alkane halide or di-substituted alkane halide, the inorganic salt additive is one or more of sodium chloride, potassium chloride and lithium chloride, and the substituent group can be an alkane group, an alkene group or an aromatic hydrocarbon group. The electrolyte of the present application adds the inorganic salt additive, increases the conductivity of the electrolyte, the battery using the electrolyte has an ion channel for only anion passing, optimizes the conduction path of the chloro chlorate complex ion, limits the improper migration of the cation, improves the selective conduction of the anion, reduces the capacity loss in the charging and discharging process, and improves the capacity retention rate of the battery.

The application discloses a kind of low ion permeation amount composite ion conducting membrane and preparation method thereof.The preparation method includes: (1) preparing chitosan intermediate layer on porous membrane support layer, and preparing chitosan / porous membrane composite base film;(2) the aqueous solution containing polyamine monomer and salt, with the organic phase solution containing polyacyl chloride, with the obtained chitosan / porous membrane composite base film as support base film, polymerization reaction occurs at the interface of aqueous phase-organic phase, and then annealing treatment is carried out, to obtain composite nanofiltration ion conducting membrane.The application enhances the wettability of traditional base film, improves the uniformity of the pore size distribution of base film, and further improves the uniformity and compactness of polyamide functional layer, thereby improving the performance of composite nanofiltration ion conducting membrane, and having industrial application value.

This invention provides a uranium extraction material from seawater based on cyclodextrin. By grafting poly(amine oximes) onto the surface of the cyclodextrin, the uniform spatial distribution and high exposure of the amine oxime groups improve the contact efficiency with uranyl ions. Thanks to multi-point grafting and a three-dimensional high-density functional group arrangement, the material exhibits a significantly higher adsorption capacity than ordinary linear amine oxime polymers. The modified cyclodextrin still retains some hydroxyl structures, which improves the hydrophilicity of the material surface, facilitating the diffusion of uranyl ions from the aqueous phase to the adsorption sites, shortening the adsorption equilibrium time, and improving adsorption kinetics. The material has a stable structure, and the functional groups are not easily detached during adsorption-desorption. Its structure is not easily damaged in the high-salinity, complex ion background of seawater, making it suitable for long-term use.

An ion source is provided. The ion source may include an ion chamber to generate an ion beam comprising a metal ion species; and a charge source, coupled to deliver a metal vapor to the ion chamber, the charge source including a charge mixture. The charge mixture may include a first portion, comprising an elemental metal; and a second portion, comprising a heterogeneous metal fluoride compound.

This invention belongs to the field of sintering process waste treatment technology, and provides a method for recovering copper and iodine from sintering machine head ash. The method involves using desulfurization wastewater to perform coordination leaching on the sintering machine head ash, utilizing the characteristic that ammonia nitrogen and chlorine in the desulfurization wastewater readily form complex ions with copper to selectively and efficiently dissolve copper from the machine head ash. The resulting copper-containing washing ash water is subjected to sulfidation precipitation, and the sulfidation precipitate is then subjected to oxidative acid leaching to obtain a copper-containing solution. The washing ash water after sulfidation precipitation is evaporated and desalted to obtain an iodine-rich evaporation mother liquor. Taking advantage of the low solubility of CuI, copper powder is added to the copper-containing solution to neutralize Cu. + The generated Cu + It can react with I in the iodine-rich mother liquor ‑ Direct precipitation is used to achieve efficient precipitation and recovery of iodine in the mother liquor, avoiding the problem of low recovery rate caused by multiple oxidation and precipitation processes in traditional iodine recovery processes.

The application provides a multi-metal ion doped prussian blue sodium salt material and a preparation method and application thereof, and relates to the technical field of sodium ions. x Mn a Fe b Co c Ni d Zn e [Fe(CN)6] y ·nH2O, formula I; wherein 0 ‑ The application provides a multi-metal doped prussian blue sodium salt material, which can exhibit excellent structural stability and electrochemical performance in a natural seawater electrolyte system, and especially in a complex ion environment with the presence of chloride ions (Cl ‑ ), effectively solves the problems of structural damage and capacity attenuation of existing prussian blue materials in a seawater environment.

This invention discloses a method for preparing needle-like aragonite whiskers using natural dolomite as raw material, belonging to the field of inorganic non-metallic material preparation technology. The method for preparing needle-like aragonite whiskers using natural dolomite as raw material includes the following preparation steps: S1. Pre-treating natural dolomite ore to obtain natural dolomite ore powder; S2. Preparing the natural dolomite ore powder into a suspension; S3. Mixing the suspension with magnesium chloride hexahydrate to adjust the system; then adding a composite alkali activator and mixing again to obtain a mixture; S4. Performing a constant-temperature stirring reaction on the mixture to obtain a reactant; sequentially subjecting the reactant to solid-liquid separation, washing, drying, and depolymerization to obtain a product rich in needle-like aragonite whiskers. This invention features a simple process flow, eliminates the need for complex ion separation steps, has low energy consumption, conforms to the concepts of green manufacturing and sustainable development, and produces aragonite whiskers with high purity, regular morphology, and good dispersibility.

The application provides a mass spectrometry device and method based on a composite ion source, which comprises a mass spectrometer with a mass spectrometry inlet; the first central axis of the first outlet of the first ion source and the second central axis of the mass spectrometry inlet form an acute angle, and the first central axis enters the mass spectrometry inlet unobstructed; the first ion source adopts an electrospray ion source; the third central axis of the second outlet of the second ion source is parallel to the second central axis, and the third central axis enters the mass spectrometry inlet unobstructed; the second ion source adopts a pulsed direct current electrospray ion source; the first distance between the first outlet and the inlet is greater than the second distance between the second outlet and the inlet. The application realizes the quick switching of multiple working modes.