72 results about "Vanadyl sulfate" patented technology

The invention provides a method for preparing VOSO4 electrolyte through gas enhanced reduction and reverse extraction, which comprises the following steps: adding an extraction inhibitor into an acidic vanadium-containing solution, stirring and reacting to obtain a vanadium-containing solution, the extraction inhibitor being phosphoric acid and / or a phosphoric acid compound; adjusting the pH value of the solution to 0.5-3.0 by using sulfuric acid, mixing with an organic phase, extracting, and separating liquid to obtain a vanadium-loaded organic phase; washing the vanadium-loaded organic phase with dilute sulfuric acid; a stripping agent and the vanadium-loaded organic phase are mixed for stripping, meanwhile, gas is introduced for strengthening the stripping process, and a no-load organic phase and a vanadium electrolyte are obtained; and the vanadium strip liquor is subjected to galvanic pile electrolysis adjustment, and the vanadium electrolyte with the valence state meeting the standard is obtained. The invention provides a novel process for directly preparing the vanadyl sulfate electrolyte through gas reinforced reduction, and the novel process has the advantages of being simple in process, easy to operate, low in cost and environmentally friendly.

The invention discloses a short-process preparation method and application of a vanadyl sulfate electrolyte based on vanadium slag valence regulation and control, and belongs to the technical field of vanadium electrolytes. The method comprises the following steps: leaching the vanadium slag by using sulfuric acid to obtain a leaching solution containing low-valence vanadium; extracting vanadium and chromium in the leachate by adopting an amine organic extraction agent; carrying out reverse extraction by using sulfuric acid; the method comprises the following steps of: firstly, extracting and separating vanadium by using a phosphoric acid extracting agent, and finally, carrying out reverse extraction by using sulfuric acid to obtain the vanadium electrolyte which can be used for constructing a VFB-5kW / 10kWh vanadium battery energy storage system. The traditional established thinking that pentavalent vanadium is extracted through vanadium slag oxidation to serve as a vanadium source to prepare the vanadium electrolyte is broken through, the novel technology for extracting the low-valence vanadium solution from the vanadium slag to directly prepare the vanadium electrolyte is provided, the short-process and green novel technology for preparing the vanadium electrolyte from the vanadium slag is constructed, the efficiency of the vanadium electrolyte preparation technology is improved, and the preparation cost is reduced.

The invention discloses a method for preparing a battery-grade vanadyl sulfate electrolyte by using a vanadium leachate, which comprises the following steps: S1, carrying out anion resin adsorption-desorption treatment and reduction treatment by using the vanadium leachate with the vanadium ion concentration of 1.0-20g / L as a stock solution and using a sulfurous acid solution or a saturated SO2 solution as a desorption solution to obtain a vanadyl sulfate solution with the vanadium ion concentration of 20-40g / L; the method comprises the following steps: sequentially performing extraction and back extraction on a vanadyl sulfate solution with the vanadium ion concentration of 20-40g / L to obtain a vanadyl sulfate electrolyte with the vanadium ion concentration of 80-160g / L; and S3, adsorbing the vanadyl sulfate electrolyte with the vanadium ion concentration of 80-160g / L by using an adsorbent, and filtering to obtain the battery-grade vanadyl sulfate electrolyte. According to the method, the removal of impurities in the vanadium leachate and the efficient reduction conversion and enrichment purification of vanadium ions can be simultaneously / synchronously realized, and the technical effects of improving the product quality, shortening the process flow, improving the production efficiency and reducing the production cost are achieved.

The invention discloses a method for preparing a high-purity vanadyl sulfate solution in a short process. The method comprises the following steps: (1) pretreating stone coal vanadium ore to obtain tailing powder; (2) the tailing powder is mixed with water and concentrated sulfuric acid for curing, vanadium cured ore is obtained, water is added for leaching, and vanadium-containing leachate is obtained; (3) reducing and extracting the vanadium-containing leachate to obtain a first-section loaded organic phase; (4) carrying out reverse extraction on the first-section loaded organic phase, and extracting a reverse extraction solution to obtain a second-section loaded organic phase; and (5) carrying out reverse extraction on the second-section loaded organic phase, and separating a water phase to obtain the high-purity vanadyl sulfate solution. Starting from the stone coal vanadium ore crushing process, the high-purity electrolyte is directly prepared through the curing leaching-neutralization iron removal-two-stage extraction technology, the method has the advantages of being low in cost, environmentally friendly, short in technological process and low in agent consumption and energy consumption, the prepared high-purity vanadyl sulfate solution is high in concentration and purity, and the method is suitable for industrial production. And impurity separation and vanadium enrichment in the vanadium shale acid leaching solution are effectively realized.

The invention belongs to the field of waste residue oil hydrogenation catalyst recovery, and particularly relates to a method for preparing vanadyl sulfate electrolyte by using a waste residue oil hydrogenation catalyst. According to the method, the waste residue oil hydrogenation catalyst is used as a raw material, the high-purity vanadyl sulfate solution is prepared through the preparation procedures of roasting, leaching, impurity removal, reduction, extraction and reverse extraction, on one hand, the problem of solid waste treatment is solved, on the other hand, vanadium is selectively recycled from the high-concentration vanadium-containing solution through a solvent extraction method, and the production cost is greatly reduced. And the obtained vanadyl sulfate solution is high in purity, few in impurities and high in production efficiency.

The invention discloses a method for generating 2, 5-diformyl furan through catalytic oxidation of 5-hydroxymethylfurfural based on an acidic vanadyl sulfate solution system, and belongs to the technical field of biomass conversion. The method comprises the following steps: by taking an acidic vanadyl sulfate solution as a catalyst and / or an oxidizing agent and HMF as a raw material, reacting to generate DFF; wherein the concentration of H2SO4 in the acidic vanadyl sulfate solution is 2.5 mol / L to 4.5 mol / L. According to the method disclosed by the invention, the oxidation process of 5-hydroxymethylfurfural (HMF) is innovatively and successfully expanded to an acid environment. HMF can be converted into DFF with high selectivity, the conversion rate reaches 100%, and the yield of DFF exceeds 80%.

The invention provides a method for preparing a high-purity vanadyl sulfate electrolyte based on carbonaceous slate type stone coal vanadium ore. The method is characterized in that mixed acid of 10% sulfuric acid and 10% hydrochloric acid is used for soaking the carbonaceous slate type vanadium ore to obtain ash obtained through decarburization power generation, a leaching solution obtained after solid-liquid separation is reduced through SO2 generated in the decarburization power generation process, a tetravalent vanadium leaching solution is obtained, and the pH range is 1.8-2.6. Carrying out multi-stage counter-current extraction on the leachate by using a P204 / P507 / Cyanex272: TBP: sulfonated kerosene system, and after two phases are separated, carrying out multi-stage counter-current counter-extraction on a vanadium-loaded organic phase by using a 1-5mol / L sulfuric acid solution to obtain a high-purity vanadyl sulfate solution; and the vanadyl sulfate solution is electrolyzed to obtain a 3.5-valence vanadium electrolyte. According to the method, the vanadium recovery rate can exceed 90%, the prepared vanadium electrolyte is low in impurity content, the technological process is short, emission of waste gas and waste water is reduced, and energy conservation and environment protection are achieved.

The invention provides a method for preparing a nearly 3.5-valent vanadium electrolyte by reducing ammonium metavanadate with coke oven gas, which comprises the following steps: (1) reducing and calcining ammonium metavanadate in coke oven gas to obtain a reduced product; (2) carrying out replacement deamination on the reduced product in the step (1) to obtain a nearly 3.5-valent vanadium oxide, wherein the nearly 3.5-valent vanadium oxide contains V4O7; and (3) a mixed sulfuric acid solution and the approximately 3.5-valent vanadium oxide are subjected to a dissolution reaction, and the approximately 3.5-valent vanadium electrolyte is obtained. The process method disclosed by the invention is simple and easy to implement, the approximately 3.5 valence vanadyl sulfate electrolyte product with high vanadium concentration and low ammonia content can be obtained by taking the ammonium metavanadate and the coke oven gas as raw materials, and the application prospect is wide.

The invention relates to the technical field of new energy, and provides a dual surface modification method for a lithium-rich layered positive electrode material. The method comprises the following steps: taking a lithium-rich layered positive electrode material sample, adding the lithium-rich layered positive electrode material sample into a pre-prepared vanadyl sulfate solution, and uniformly stirring to enable the lithium-rich layered positive electrode material sample and the vanadyl sulfate solution to react to obtain a mixed solution; adding an alkaline solution into the mixed solution, adjusting the pH value of the mixed solution to 7-10, and continuously stirring until the reaction is sufficient; filtering, washing and drying the fully reacted solution to obtain a lithium-rich layered positive electrode material precursor with a passivated surface and a VO2 coating; and heating the lithium-rich layered positive electrode material precursor to 400-700 DEG C in an inert gas atmosphere, and then carrying out heat preservation and furnace cooling to obtain the lithium-rich layered positive electrode material with a passivation layer and a VO2 coating layer on the surface. According to the method, surface passivation and surface coating of the lithium-rich layered positive electrode material are synchronously realized, and a method which is simple in step, easy in reaction condition control, low in production cost and capable of being applied on a large scale is provided.

The invention provides a method for extracting vanadium by negative pressure roasting of dolomite and acid leaching of vanadium slag, and belongs to the technical field of resource recovery, the method comprises the following steps: crushing the vanadium slag, the dolomite and the vanadium slag to a certain particle size, mixing according to a certain proportion, and pelletizing; carrying out negative pressure roasting on the pellets by adopting a closed furnace to obtain roasted clinker and carbon dioxide; leaching and trapping the carbon dioxide through a calcium-containing aqueous solution to prepare light calcium carbonate; the roasted clinker is leached through sulfuric acid, and a vanadium-containing solution and leaching residues are obtained after leaching; extracting the vanadium-containing solution to prepare vanadyl sulfate; and carrying out magnetic separation on the leaching residues to obtain magnetite, and taking residual tailings as a cement raw material. According to negative pressure roasting, the normal pressure calcification roasting temperature is reduced, the cost is greatly saved, meanwhile, an iron component in the vanadium slag is converted into magnetic ferroferric oxide, the utilization rate of iron is increased, in addition, carbon dioxide enrichment is achieved through the closed furnace, a light calcium carbonate product is prepared through trapping and mineralization, and full-quantization high-value utilization of the vanadium slag component is achieved.

The invention relates to a vanadyl sulfate electrolyte based on shale vanadium-rich liquid and a preparation method of the vanadyl sulfate electrolyte. According to the technical scheme, the shale vanadium-rich liquid is subjected to reduced pressure evaporation, and high-concentration vanadium-rich liquid is obtained; standing the high-concentration vanadium-rich liquid in a low-temperature environment for cooling crystallization, and carrying out solid-liquid separation for the first time to obtain a high-purity vanadium-rich liquid; according to the solid-to-liquid ratio of 1-15 Kg / t, seed crystals and the high-purity vanadium-rich liquid are mixed and stirred, and turbid liquid is obtained; crystallizing the turbid liquid in a constant-temperature environment; carrying out secondary solid-liquid separation to obtain vanadyl sulfate crystals; and dissolving the vanadyl sulfate crystal in a dilute sulfuric acid solution according to a solid-to-liquid ratio of 400-575 Kg / t to prepare the vanadyl sulfate electrolyte based on the shale vanadium-rich liquid. The method has the characteristics of being simple in process, low in medicament consumption, environment-friendly, high in safety and convenient to adjust the vanadium concentration of the electrolyte, the prepared vanadyl sulfate electrolyte based on the shale vanadium-rich liquid is high in purity, and separation of vanadium and impurities in the shale vanadium-rich liquid is effectively achieved.

The application discloses a kind of bimetallic MOFs material of mesoporous structure and its efficient synthesis and screening method, with vanadyl sulfate and iron nitrate hydrate as two metal center ion source, with uniform benzene tricarboxylic acid as ligand material preparation formation mesoporous structure bimetallic MOFs material, 1,3,5-uniform benzene tricarboxylic acid is dissolved in mixed solvent one and obtained solution A, the mixed solvent one is 1:1 mixed solvent of ethanol and DMF;Metal salt one and metal salt two are dissolved in water, and a certain amount of ammonium fluoride is added, and gel B is formed;The metal salt one is Fe (NO3) 3·9H2O, and the metal salt two is VOSO4;Solution A is mixed with gel B and forms gel C after stirring for a certain time;Gel C is centrifuged and separated, then washed with ethanol, and then soaked in dichloromethane for multiple times;The obtained product is dried first, then activated, and powder D is obtained.The application can be synthesized at room temperature with bimetallic MOFs material with more optimal mesoporous structure, improve the yield, stability and excellent performance of material.

The invention discloses an environment-friendly hybrid film forming agent as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an L-cysteine solution and an environment-friendly metal salt solution; the metal salt is selected from one of vanadyl sulfate, stannous sulfate, neodymium nitrate, yttrium nitrate and cerium nitrate; and mixing the L-cysteine solution and the metal salt solution to obtain a mixed solution, and adjusting the pH value to 4-4.5 to obtain the environment-friendly hybrid film forming agent. L-cysteine serves as a main body and is matched with non-toxic metal ions to prepare the hybrid film forming agent, the L-cysteine forms a Cu-S bond with the surface of metal copper through sulfydryl and is adsorbed on the surface of the copper, carboxyl and amino in the L-cysteine can be coordinated with the added metal ions, and the metal ions are adsorbed on the surface of the copper; a film which is more compact and more excellent in performance is formed on the surface of the protected metal copper; through coordination of metal ions and amino acid functional groups, the driving force of the film-forming agent is larger than that of a pure environment-friendly organic film-forming agent, and the film-forming effect is better.

The application provides a method for preparing 3.5-valence vanadyl sulfate electrolyte by reducing ammonium polyvanadate with a gas, which comprises the following steps: (1) ammonium polyvanadate is reduced and calcined by a reducing gas to obtain vanadium oxide; the vanadium oxide contains V4O7; the reducing gas comprises a mixed gas of NH3, CO and H2; (2) a mixed sulfuric acid solution and the vanadium oxide are subjected to a dissolution reaction, and vanadium adjustment is performed to obtain 3.5-valence vanadyl sulfate electrolyte. The process is simple and easy to implement, 3.5-valence vanadyl sulfate electrolyte product can be obtained from ammonium polyvanadate as raw material, the vanadium concentration is high, and the application prospect is wide.

The invention provides a high-purity and high-solubility vanadyl sulfate crystal and a preparation method and application thereof.The preparation method of the high-purity and high-solubility vanadyl sulfate crystal comprises the following steps that ammonium metavanadate or ammonium polyvanadate serves as a raw material and is roasted at the temperature of 600-900 DEG C under the inert gas protection and reducing atmosphere conditions, and vanadium oxide is obtained; dissolving the vanadyl sulfate in a mixed solution of pure water and sulfuric acid to obtain a high-concentration vanadyl sulfate solution or vanadyl sulfate slurry; the valence state of vanadium is adjusted to 3.9-4.1; cooling, crystallizing and filtering to obtain primary vanadyl sulfate crystals; dissolving the primary vanadyl sulfate crystal in pure water to obtain a vanadyl sulfate solution, and filtering; and adding sulfuric acid, adjusting the vanadium valence state of the solution to 3.99-4.01, cooling, crystallizing, and filtering to obtain the high-purity and high-solubility vanadyl sulfate crystal. The vanadyl sulfate crystal has the advantages of small particle size, high purity, good solubility and the like, and has good application prospects and large-scale popularization potential in the field of vanadium electrolyte.

The invention belongs to the technical field of all-vanadium redox flow batteries, and relates to a preparation method of a vanadium electrolyte and solid vanadyl sulfate, and the preparation method of the vanadium electrolyte comprises the following steps: based on pH value adjustment in a vanadium molybdate solution and a reverse extraction reagent, realizing co-extraction of vanadium and molybdenum elements in the vanadium molybdate solution by extracting an organic phase and sequential reverse extraction and recovery of the molybdenum and vanadium elements, the extraction organic phases for extracting vanadium and molybdenum elements have the same composition; and purifying the recovered vanadium product to prepare the vanadium electrolyte. The problems that in the prior art, synchronous recovery of various vanadium and molybdenum elements is difficult to achieve, the vanadium element is difficult to recycle, the vanadium recovery rate is low, the purity of recovered products is low, environmental pollution is large, the requirement for the purity of vanadium raw materials is high, the steps of a vanadium raw material purification preparation process are complex, and vanadium is difficult to separate from vanadium and molybdenum homologous materials are solved. The method overcomes the defects of low yield and low product purity caused by poor separation effect of elements in the vanadium molybdate solution in the prior art.

The invention discloses a converter vanadium slag gypsum negative pressure roasting circulation process, and relates to the technical field of non-ferrous metal solid waste diversified utilization, the method comprises the following steps: mixing raw materials according to a ratio, and carrying out negative pressure roasting to obtain calcified slag and sulfur dioxide, the raw materials comprising converter vanadium slag and industrial waste gypsum; industrial waste gypsum and converter vanadium slag are used as raw materials, roasting is performed under negative pressure, secondary countercurrent leaching is performed to obtain vanadium-containing acid leaching liquid, and the vanadium-containing acid leaching liquid is subjected to purification and impurity removal to directly prepare the vanadyl sulfate electrolyte. Wherein sulfur dioxide gas generated in the roasting process is directly used for preparing acid for acid leaching, leaching residues can be prepared into an adsorbent for pretreatment of vanadium-containing leaching liquid, multi-component cyclic utilization is achieved, and the cost is reduced.

The invention discloses a method for preparing high-purity vanadyl sulfate from acidic vanadium liquid. The method comprises the following steps: S1, extracting the acidic vanadium liquid by using an organic phase A to obtain a primary loaded organic phase; s2, washing the loaded organic phase once; s3, carrying out reverse extraction on the washed primary load organic phase by using alkali liquor to obtain primary reverse extraction liquor; s4, after the pH of the primary strip liquor is adjusted, a reducing agent is added for reduction, and a reduced solution is obtained; s5, extracting the reduced solution by using the organic phase B to obtain a secondary loaded organic phase and a secondary raffinate; s6, the secondary loaded organic phase is subjected to reverse extraction, and secondary reverse extraction liquid is obtained; and S7, the secondary strip liquor is subjected to oil removal treatment, and the vanadyl sulfate electrolyte is obtained. According to the method, the calcified acidic vanadium liquid produced on an industrial scale is adopted as a raw material for producing the vanadyl sulfate electrolyte, the raw material source is stable and easy to obtain, no ammonium salt is added in the whole process, no heating process is needed, two ion extraction agents are adopted for two-stage extraction, and the vanadium yield reaches 95% or above.

The application discloses a flexible transparent aqueous zinc ion battery polyaniline / vanadium oxide composite positive electrode sheet and a preparation method thereof, and belongs to the technical field of aqueous zinc ion batteries. The preparation method comprises the following steps: using vanadyl sulfate aqueous solution as an electroplating solution, using a gold grid / PET as a working electrode, and using a platinum sheet as a counter electrode to construct a two-electrode structure; a vanadium oxide layer is deposited on the surface of the gold grid / PET by adopting a constant-voltage electrochemical deposition method, and a vanadium oxide / gold grid / PET is prepared; sulfuric acid and polyaniline are added into deionized water to prepare an electroplating solution, the vanadium oxide / gold grid / PET is used as the working electrode, the platinum electrode is used as the counter electrode, and a saturated calomel electrode is used as a reference electrode to construct a three-electrode structure; a polyaniline layer is deposited on the surface of the vanadium oxide / gold grid / PET by adopting a constant-voltage electrochemical deposition method, and the composite positive electrode sheet is obtained.

The invention belongs to the technical field of high-value utilization of non-ferrous metal solid waste, and relates to a method for preparing high-purity vanadyl sulfate through calcification roasting countercurrent leaching extraction.The method comprises the steps that converter vanadium slag serves as a raw material, a calcification agent is added for roasting, and transformed vanadium slag is obtained; secondary countercurrent is conducted on the transformed vanadium slag, calcium sulfite is added in the leaching process, and reduced vanadium-containing acid leaching liquid is obtained; the leaching residues can be used for preparing ferrotitanium alloy products; vanadium and impurities are separated through the extraction circulation process of extraction, washing and reverse extraction, and the high-purity vanadyl sulfate electrolyte is prepared. According to the method, the converter vanadium slag is adopted as a raw material, and high-value utilization of the converter vanadium slag in the field of energy storage is achieved. And meanwhile, resource utilization of leaching residues obtained through secondary countercurrent leaching is achieved, and whole-process harmless treatment is achieved.

The invention discloses a comprehensive separation and extraction method for vanadium, titanium and iron in vanadium titano-magnetite, and belongs to the technical field of metallurgy. The method includes the following steps that acidolysis mother liquor rich in vanadium and iron and high-titanium slag with titanium as the main component are obtained through external field strengthening hydrochloric acid leaching; carrying out hydrochloric acid analysis on the acidolysis mother liquor rich in vanadium and iron to generate hydrogen chloride gas, adding a neutralizer, and carrying out solid-liquid separation to obtain high-vanadium slag and an acidic solution I containing free hydrochloric acid and ferric chloride; performing extraction and reverse extraction on the high-vanadium slag to obtain a high-purity vanadyl sulfate solution final product; removing calcium from the acid solution I containing free hydrochloric acid and ferric chloride and the raffinate to obtain an acid solution II containing free hydrochloric acid and ferric chloride; evaporating and concentrating an acid solution II containing free hydrochloric acid and ferric chloride, and then burning to generate a metal oxide mainly containing ferric oxide and hydrogen chloride gas; the high titanium slag and concentrated hydrochloric acid are subjected to enhanced reaction under the action of an external field, and titanium dioxide is obtained through calcination. The method can be used for efficiently and comprehensively extracting vanadium, titanium and iron, and has the advantages of high recovery rate, environmental protection property, economical efficiency and high-value utilization.

This invention provides a method for preparing VOSO4 electrolyte by gas-enhanced reduction back-extraction, comprising the following steps: adding an extraction inhibitor to an acidic vanadium-containing solution and stirring to obtain a vanadium-containing solution, wherein the extraction inhibitor is phosphoric acid and / or a phosphoric acid compound; adjusting the pH of the solution to 0.5–3.0 with sulfuric acid, mixing with an organic phase for extraction, and separating the extract to obtain a vanadium-loaded organic phase; washing the vanadium-loaded organic phase with dilute sulfuric acid; mixing a back-extraction agent with the vanadium-loaded organic phase for back-extraction, while simultaneously introducing gas to enhance the back-extraction process, to obtain an empty organic phase and a vanadium electrolyte; adjusting the vanadium back-extraction solution through electrolysis in a fuel cell stack to obtain a vanadium electrolyte with a valence state conforming to the standard. This invention provides a novel gas-enhanced reduction process for directly preparing vanadium oxysulfate electrolyte, which has the advantages of simple process, easy operation, low cost, and environmental friendliness.

The present invention provides a highly soluble vanadium sulfate, a preparation method thereof and an application, comprising the following steps: mixing V2O4, sulfuric acid and a solvent, and reacting at 60-100 °C for 1-8 h to prepare a high-concentration vanadyl sulfate solution; electrolytically reducing the high-concentration vanadyl sulfate solution until the high-concentration vanadyl sulfate solution is completely converted into a trivalent vanadium sulfate solution; adding sulfuric acid to the trivalent vanadium sulfate solution and then crystallizing, wherein the addition amount of sulfuric acid satisfies V:SO4 2‑ = 1:0.5-1.5, and filtering to obtain V2(SO4)3 crystals; adjusting the valence state by adding vanadium pentoxide according to the molar ratio of V 3+ :V 5+ = 1:0.9-1.0, and using the obtained low-concentration vanadyl sulfate solution to prepare a high-concentration vanadyl sulfate solution. The preparation method of the highly soluble vanadium sulfate of the present invention is environmentally friendly and pollution-free, the raw materials are recycled without waste, and the prepared vanadium sulfate has high purity, good solubility, and can be used to prepare the electrolyte crystals of a vanadium redox flow battery.

The application belongs to the technical field of electrochemical energy storage and provides an electrolyte, a preparation method and a full vanadium redox flow battery. The electrolyte comprises an acidic electrolyte, vanadyl sulfate, an additive and water, the additive is 5-amino-2-naphthalenesulfonic acid, 3-aminobenzenesulfonic acid or 3-aminopropanesulfonic acid, the concentration of the acidic electrolyte in the electrolyte is 3.0-3.5 mol / L, the concentration of the vanadyl sulfate is 1.7-2.0 mol / L, and the concentration of the additive is 0.05-0.25 mol / L. The electrolyte can improve the high-temperature stability of VO2 + under the premise of ensuring good electrochemical performance.

Provided herein are pharmaceutical compositions and dietary supplements comprising vanadyl sulfate (VS) and method of use thereof for the induction of cell death in senescent cells. In particular. VS compositions find use in clearance of age-related and / or therapy-induced senescent cells and reduction / elimination of senescence associated secretory phenotype (SASP)-induced inflammatory environments in subjects. and therefore in the treatment / prevention of age-related conditions and / or cancer.

The invention discloses a preparation process of gamma-butyrolactone and vanadyl sulfate, and relates to the technical field of chemical synthesis. A preparation process of gamma-butyrolactone and vanadyl sulfate comprises the following steps: S1, adding acetic anhydride and vanadium pentoxide into a reaction container, introducing ethylene, and heating for reaction to obtain a reactant; s2, the reactant is filtered, filtrate and filter residues are obtained, the filtrate contains the target product gamma-butyrolactone, and the obtained filter residues are washed and dried for standby application; and S3, transferring the washed and dried filter residues into another reaction container, and adding sulfuric acid for dissolving to obtain another target product vanadyl sulfate solid. The method is simple in technological process, gamma-butyrolactone and vanadyl sulfate can be continuously prepared in one set of process, operation is convenient, product selectivity is high, high economic benefits can be brought, and the method has production and application value.

The application provides a method for preparing high-purity vanadyl sulfate electrolyte based on carbon slate type stone coal vanadium ore. The method is characterized by the following steps: soaking the ash residue obtained by decarburization and power generation of carbon slate type vanadium ore in mixed acid of 10% sulfuric acid and 10% hydrochloric acid, and obtaining leaching solution after solid-liquid separation; reducing the SO2 generated in the decarburization and power generation process to obtain tetravalent vanadium leaching solution with pH ranging from 1.8 to 2.6; using the P204 / P507 / Cyanex272:TBP:sulfonated kerosene system for multistage countercurrent extraction of the leaching solution; after two-phase separation, using 1-5 mol / L sulfuric acid solution for multistage countercurrent stripping of the vanadium-loaded organic phase to obtain high-purity vanadyl sulfate solution; and obtaining 3.5-valent vanadium electrolyte by electrolysis of the vanadyl sulfate solution. The application can achieve vanadium recovery rate of more than 90%, the prepared vanadium electrolyte has low impurity content, the process flow is short, and the emission of waste gas and waste water is reduced, thereby achieving energy saving and environmental protection.

The invention relates to the technical field of membrane-free batteries, in particular to a membrane-free two-phase vanadium-bromine battery and an electrolyte thereof.In the membrane-free two-phase vanadium-bromine battery, water and an organic solvent are used on the premise that a diaphragm is avoided, battery self-discharge caused by cross contamination of active substances is avoided, bromide ions in potassium bromide serve as cross-phase oxidation-reduction substances, and the service life of the membrane-free two-phase vanadium-bromine battery is prolonged. Vanadium ions in vanadyl sulfate serve as non-cross-phase redox substances, a bromine complexing agent is added into an organic solvent to be combined with bromine to generate a high-solubility hydrophobic active substance, the battery cost is reduced, the device design is simplified, the theoretical capacity of the battery is improved, and a series of battery cycle and service life problems caused by irregular growth of zinc metal are avoided.

The invention relates to the field of preparation of vanadyl sulfate crystals, in particular to a method for extracting vanadyl sulfate crystals from a high-acid system, which comprises the following steps: concentrating a solution containing vanadium ions to obtain a concentrated solution; the concentrated solution is loaded to a chromatographic column, adsorption tail liquid is obtained, and the stationary phase of the chromatographic column is anion exchange resin; crystals in the adsorption tail liquid are separated out, and vanadyl sulfate crystals are obtained. According to the method, the solution containing the vanadium ions in the high-acid system is treated through the anion exchange resin, sulfate radicals in the solution containing the vanadium ions are adsorbed through the anion exchange resin, meanwhile, hydroxyl radicals are released, the acidity of the solution containing the vanadium ions can be reduced, the viscosity of the solution can be reduced, subsequent nucleation and precipitation of vanadyl sulfate crystals are facilitated, and the purity of the solution containing the vanadium ions is improved. The method provided by the invention is simple and convenient to operate, the efficiency of extracting the vanadyl sulfate crystal is high, and the vanadyl sulfate crystal extracted by the method provided by the invention is obvious in particle, non-sticky and good in resolubility.

The utility model relates to the technical field of vanadyl sulfate solution recovery devices, and discloses a vanadyl sulfate solution oil-water separation device which comprises a separation box, a filtering box is arranged on the left side of the top of the separation box, a discharging groove is welded to the rear side of the top of the filtering box, and a separation device is fixedly installed on the rear side of the top of the separation box. A separation plate is arranged on the right side of the first isolation plate, and an isolation assembly is slidably connected into the separation plate. According to the oil-water separation device disclosed by the utility model, impurities in the recovered vanadyl sulfate solution can be filtered in the filter box through the mutual cooperation of the filter box and the separation device, and the filtered vanadyl sulfate solution can be heated through the separation device, so that the oil-water separation speed in the vanadyl sulfate solution is increased; meanwhile, the air blower blows floating oil to the position of the scraping plate, floating oil dirt is removed through the scraping plate, the oil dirt is discharged from the oil discharging hole, a solution is discharged from the water discharging hole, and therefore the oil-water separation effect is achieved.