17 results about "Phosphate anion" patented technology

The application relates to the technical field of fine chemicals, in particular to a biomimetic amphoteric surfactant as well as a preparation method and application thereof; the preparation method of the biomimetic amphoteric surfactant comprises the following steps: reacting a fatty amine polyoxyethylene ether with a halogenated hydrocarbon to obtain a benzyl quaternary ammonium salt intermediate; cooling the benzyl quaternary ammonium salt intermediate, then adding phosphorus pentoxide to react; after the addition is completed, water is added, the reaction is continuously carried out, and the biomimetic amphoteric surfactant is obtained; the biomimetic amphoteric surfactant simultaneously integrates three characteristics of phosphate anion, polyether non-ion and benzyl quaternary ammonium salt cation, effectively solves the industry problem that traditional phosphates and cationic settling agents are incompatible, and is applied to metal processing fluid, can realize stable compounding with cationic settling agents while retaining excellent extreme pressure lubricity and hard water resistance, and can replace traditional extreme pressure agents such as environmentally-unfriendly chlorinated paraffin.

The present application relates to a kind of metal phosphate oligomer surface-coated layered structure positive electrode material and its preparation method and application.The metal phosphate oligomer surface-coated layered structure positive electrode material includes: inside is layered structure positive electrode material, surface is metal phosphate oligomer;The structure general formula of the layered structure positive electrode material is LiXO2, wherein X is selected from at least one of Co, Mn and Ni;The metal phosphate oligomer contains metal ion and phosphate anion, structure general formula is M x (PO4) y ;Wherein M is at least one of Li, Ti, Sn, Mn, Zr and Al, preferably Li and Zr, more preferably Li: Zr=1: (0.25~3).

The invention discloses a method for separating rhenium from a rhenium-rich solution containing molybdenum and tungsten. The method comprises the following steps: extracting a rhenium-rich raw material solution containing ReO4 <-> and impurity ions by using an extraction agent containing hydrophobic ionic liquid to obtain an organic extraction phase containing ReO4 <-> and a raffinate phase containing the impurity ions; wherein the solvent of the raw material solution is water, and the impurity ions comprise one or two of MoO4 < 2-> and WO4 < 2->; the hydrophobic ionic liquid is composed of positive ions and negative ions, the anions are selected from one or more of halide ions, borate anions, carboxylate anions, carbonate anions, nitrate ions, nitrite ions, sulfate anions, sulfite anions, sulfonate anions, phosphate anions, phosphite anions, thiocyanate anions and amino acid ions. The method is high in separation efficiency, simple in technological process, easy to amplify, small in extraction agent loss, capable of being recycled and suitable for industrial production.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to an aqueous zinc ion battery electrolyte as well as preparation and application thereof. The aqueous zinc ion battery electrolyte comprises the imidazolium phosphate additive, and the performance of the aqueous zinc ion battery electrolyte is systematically improved through multiple synergistic effects of imidazolium cations and phosphate anions. The aqueous zinc ion battery electrolyte has excellent interface stability, high and low temperature performance and cycle performance, and a battery prepared from the aqueous zinc ion battery electrolyte has high coulombic efficiency, excellent cycle stability, excellent high and low temperature cycle performance and excellent cycle discharge performance; the aqueous zinc ion battery electrolyte has the advantages of simple preparation process, easily available raw materials, no use of an organic solvent in the preparation process, environmental friendliness and suitability for large-scale production, and has wide market application prospects in the fields of zinc ion batteries, zinc ion energy storage devices and the like.

The application relates to the field of cutting fluids, and discloses an inhibitor, a high-efficiency lubricating water-based cutting fluid and application thereof. A long-chain alkyl phosphate betaine is selected as a key inhibitor. Phosphate anions and quaternary ammonium salt cations in the molecule can be firmly adsorbed on metal surfaces with different electricities, and long-chain alkyls can form a dense hydrophobic layer on the metal surface, laying a foundation for multi-metal compatibility. The inhibitor has a synergistic effect with a semi-synthetic composite lubricating system. In addition, the system uses a thiophosphate and an organic phosphonic acid to be compounded as extreme pressure anti-wear agents. In the absence of chlorine and boron, the extreme pressure anti-wear agents can form a high-strength chemical reaction film with the above-mentioned adsorption film under extreme pressure conditions, so that the carrying capacity is further improved.

The application discloses a preparation method of vanadium phosphate nanosheet and application thereof. The preparation method of the vanadium phosphate nanosheet comprises the following steps: A) dissolving a phosphate anion surfactant in a mixed solution of ethanol and water to obtain a solution I; B) mixing a compound containing vanadium ions with the solution I to perform ion adsorption, and through hydrothermal reaction, centrifugation, freezing, drying and annealing treatment, ordered mesoporous vanadium phosphate nanosheet is obtained; the vanadium ions are selected from at least one of divalent, trivalent, tetravalent and pentavalent. When the ordered mesoporous vanadium phosphate nanosheet is used as a positive electrode material of a quasi-solid-state lithium metal battery, the ordered mesoporous vanadium phosphate nanosheet has super-high specific capacity and excellent rate performance, and can realize stable multi-electron reaction. The preparation method has the advantages of low raw material cost, simple process, simple equipment, high efficiency, high repeat efficiency, and important application prospect of the prepared lithium ion battery.

The invention relates to the technical field of detection of anions, in particular to a method for detecting anion impurities in tris (trimethylsilyl) phosphate, and aims to solve the problems that an existing common detection method is low in detection efficiency, complex in detection process, difficult to simply separate and detect various anion impurities at the same time and the like. The method comprises the following operation steps: (1) preparing a sample; (2) preparing leacheate and regeneration liquid; (3) carrying out gradient elution by using ion chromatography; and (4) carrying out quantitative analysis on the obtained anion impurities by an external standard method. By selecting specific ion chromatography conditions and using gradient elution, the peak appearance time of SO4 < 2-> can be remarkably shortened, the peak shape (sharper and narrower) of SO4 < 2-> is improved, the detection sensitivity is improved, the reproducibility is good, and the problem that anion impurities in tris (trimethylsilyl) phosphate are difficult to test is solved. The method is suitable for detecting tri (trimethylsilyl) phosphate anion impurities in experiments, the detection efficiency is improved, and a detection guarantee is provided for quality control in the tri (trimethylsilyl) phosphate production process.

The application discloses a coated and doped double-modified positive electrode material and a preparation method and application thereof. The coated and doped double-modified positive electrode material comprises a positive electrode core and a coating layer coated on the surface of the core, the core is doped with phosphate, and the coating layer comprises conductive ceramics which are composite oxides containing at least two metal elements. The intrinsic properties of the positive electrode material can be regulated by doping the positive electrode material with phosphate anions, and the electronic and ionic transmission properties of the positive electrode material can be effectively improved by the synergistic effect of the coating of the conductive ceramics of multiple metals, so that the electrochemical performance of the material is improved.

The present invention relates to an acidic aqueous composition which is free or substantially free of both fluoride anions and nickel cations and which comprises at least components a1) to a5) which are different from one another, namely phosphate anions as a1), nitrate anions as a2), zinc cations as a3), copper cations as a4), and magnesium cations as a5), a concentrate for producing said composition by dilution with water, a method for using said composition for at least partially phosphating an iron surface of a substrate, a method for phosphating at least one iron surface of at least one substrate, which method comprises at least step 1), i.e., contacting at least one iron surface at least partially with the aqueous acidic composition for phosphating at least one surface of the present invention, a substrate having at least one phosphate-treated surface obtainable by said phosphating method, and a method for cold-forming said substrate having at least one iron surface, which method comprises subjecting said substrate having at least one phosphate-treated surface to a cold-forming process.

The invention relates to the field of cutting fluid, and discloses a corrosion inhibitor, an efficient lubricating water-based cutting fluid and application of the corrosion inhibitor, long-chain alkyl phosphate betaine is selected as a key corrosion inhibitor, phosphate anions and quaternary ammonium salt cations in molecules of the long-chain alkyl phosphate betaine can be firmly adsorbed on metal surfaces with different electrical properties, and the metal surfaces with different electrical properties can be formed. And long-chain alkyl can form a compact hydrophobic layer on the metal surface, so that a foundation is laid for multi-metal compatibility. The corrosion inhibitor disclosed by the invention and a semi-synthetic composite lubricating system have a synergistic interaction effect. Besides, thiophosphate and organic phosphonic acid are compounded to serve as an anti-wear reagent at extreme pressure in the system, and the anti-wear reagent and the adsorption film can form a high-strength chemical reaction film under the extreme pressure condition under the condition that chlorine and boron are not contained, so that the bearing capacity is further improved.

The invention belongs to the technical field of friction lubrication, and provides near-zero-wear polymer-based ionic liquid as well as a preparation method and application thereof. The polymer-based ionic liquid provided by the invention takes polyethyleneimine cations as cations and phosphate anions as anions. The polymer-based ionic liquid disclosed by the invention has good thermal stability, wettability to a steel substrate, high viscosity and adhesive force, proper pH value and excellent corrosion resistance. Compared with a traditional lubricating agent, the polymer-based ionic liquid can obviously reduce the friction coefficient, meanwhile, the abrasion of the surface of a steel friction pair is remarkably reduced, lasting ultralow abrasion is achieved on the steel contact surface under the high-load and complex application environment, and the excellent tribological performance is shown.

The invention discloses a phosphoric acid purification method and application thereof, and belongs to the technical field of chemical raw materials. The method comprises the following steps: adjusting the pH value of a phosphoric acid crude product solution to 2-4, firstly adsorbing phosphoric acid anions by using aminated multi-walled carbon nanotubes, then removing metal ion impurities in the adsorbed solution by using sulfonic acid type cationic resin to obtain a purified solution, desorbing the aminated multi-walled carbon nanotubes by using ammonia water to obtain an ammonium phosphate solution, and drying the ammonium phosphate solution to obtain the phosphoric acid. Heating and decomposing to obtain a high-purity phosphoric acid solution, and collecting the high-purity phosphoric acid solution and a purified solution to obtain a purified product. According to the purification method, anions are removed firstly, phosphate precipitates of metal ions on the surface of the subsequent sulfonic acid type cationic resin are reduced, the pollution risk of the resin can be reduced, blockage or failure of the resin is avoided, and the purification purity is improved; loss of a large amount of phosphate precipitates is avoided in the treatment process, and the phosphoric acid recovery rate is high; wherein the ammonia water can be partially recycled, so that the consumption of alkali liquor can be reduced, and the cost is reduced.

The invention relates to degradable developing embolism microspheres as well as a preparation method and application thereof, and belongs to the technical field of embolism microspheres. The preparation method of the degradable developing embolism microspheres comprises the following steps: mixing a nonionic iodine contrast agent with a plurality of hydroxyl groups and a cross-linking agent with at least two phosphate groups in an alkaline aqueous solution to obtain an aqueous phase solution; and mixing the water phase solution and the oil phase solution to form a water-in-oil reversed-phase suspension polymerization system, and reacting to obtain the degradable developing embolism microspheres. A nonionic iodine contrast agent and a cross-linking agent with at least two phosphate groups are adopted for cross-linking polymerization, and under the alkaline condition, hydroxyl and the phosphate groups are subjected to a phosphate esterification reaction to form a three-dimensional cross-linked network; the iodine element introduced by the nonionic iodine contrast agent, the phosphate bond generated by the phosphate esterification reaction and the phosphate anions introduced by the cross-linking agent endow the microsphere with developing, drug-loading and degradable properties at the same time, and can be efficiently used for TACE treatment.

The invention relates to a method for cleaning a metal surface of a substrate, comprising at least a step 1) of contacting the surface with an aqueous alkaline composition AAC for cleaning the substrate, the present invention relates to an aqueous alkaline composition AAC comprising water, an alkalinity inducing source, optionally a complexing agent, a surfactant and optionally borate anions and / or optionally condensed phosphate anions, and optionally also a step 2) of rinsing the cleaned surface obtained after step 1) at least once with an aqueous rinsing composition ARC, and optionally also a step 3) of rinsing the cleaned surface obtained after step 1) at least once with an aqueous rinsing composition ARC. Wherein Zr cations are present in the composition AAC when optional step 2) is not performed, or Zr cations are present in at least one of the compositions AAC and ARC when optional step 2) is performed; to the aqueous alkaline composition AAC itself and a concentrate useful for its preparation; to a method for the chemical pretreatment of the aforementioned cleaned substrate surface; to a method for coating the chemically pretreated substrate surface; and to a substrate having a cleaned, chemically pretreated or coated surface obtainable by one of the above methods.

The invention discloses a carbon-coated pyrophosphate doped vanadium manganese phosphate positive electrode material and a preparation method thereof. Pyrophosphate radicals are doped to phosphate radical anion sites of sodium vanadium manganese phosphate (Na < 3.5 > Mn < 0.5 > V < 1.5 > (PO < 4 >) < 3 >) through a sol-gel method and a high-temperature calcination method, and the sodium ion battery positive electrode material pyrophosphate radical doped sodium vanadium manganese phosphate (Na < 3.5 + x > Mn < 0.5 > V < 1.5 > (PO < 4 >) < 3-x > (PO < 7 >) < x / C) (0 lt, x < = 1) is obtained. By introducing P2O74 <-> into the lattice structure of the vanadium manganese sodium phosphate, the crystal structure can be stabilized, the structural deformation in the charging and discharging process can be reduced, and a relatively large channel is provided for rapid migration of sodium ions, so that the doped vanadium manganese sodium phosphate has excellent large current property and cycling stability.

The invention belongs to the technical field of fluorescence sensing, and particularly relates to a preparation method and application of a fluorescent copper nano-cluster. Phosphate anions are used as an inducer to promote fluorescence enhancement of the copper nano-cluster so as to prepare the high-fluorescence copper nano-cluster, and based on the fact that uranyl ions have no influence on fluorescence of the copper nano-cluster, the phosphate anions can sensitize self-fluorescence of the uranyl ions so as to realize quantitative detection of the uranyl ions. The method is simple to operate, good in selectivity and high in application efficiency, and a novel method is provided for sensitive detection of uranyl ions.

A sol-gel material for overcoating a surface-relief structure includes a titanium(IV) precursor, and a titanium oxide stabilizer including R3OC(O)OR4, R5C(O)OR6, or a combination. R3 and R4 include alkyl or alkene groups optionally containing carboxylate, alcohol, or ester functionalities, such as propylene carbonate (PC). R5 and R6 include alkyl or alkene groups optionally containing carboxylate, alcohol, or ester functionalities, for example, a lactone such as gamma butyrolactone (GBL). In some embodiments, the sol-gel material includes a source of sulfate or phosphate anions, an acid, a base, a peroxide, a surfactant, a cross-linker, a flexibilizer, a toughener additive, a solvent, or a combination thereof. In some embodiments, the sol-gel material is annealed at a temperature between 50-150° C., and then annealed at a temperature between 200-300° C. In some embodiments, the sol-gel material is cured using ultraviolet light before annealing at a temperature between 200-300° C.