144 results about "Oxoacid" patented technology

The invention relates to a process method of red phosphorus, in particular to a process for producing red phosphorus by a high-temperature closed method, which comprises the following steps: S1, preparing yellow phosphorus; s2, melting is conducted; s3, high-temperature conversion; s4, crushing; s5, alkali boiling; s6, rinsing and filtering; s7, dehydrating; s8, drying is conducted; the method for producing a slurry containing red phosphorus particles according to the present invention is advantageous in that it is a method advantageous for industrial production, it is possible to obtain a slurry containing red phosphorus particles in which phosphine gas can be generated in a short time and with stable quality, and in which the dissolution and precipitation of an oxyacid of phosphorus are reduced, and it is also possible to produce a slurry containing red phosphorus particles. According to the present invention, the red phosphorus particles obtained by a method for producing a slurry containing red phosphorus particles can be used as a raw material for production, and stabilized red phosphorus in which the amount of phosphine gas generated and the amount of oxyacid dissolution and precipitation of phosphorus are effectively suppressed can be obtained; in the whole preparation process, the labor intensity is reduced, the production efficiency is improved, and the production safety is ensured.

The invention discloses a composite additive for a vanadium electrolyte and a preparation method of the composite additive, and relates to the technical field of vanadium batteries. The composite additive is applied to the electrolyte of the vanadium battery, the electrolyte is a positive electrode electrolyte and a negative electrode electrolyte, the concentration of the vanadium electrolyte can be improved, precipitation and crystallization of vanadium ions can be inhibited, and meanwhile, the electrochemical activity of the vanadium battery can be improved. The composite additive comprises a mixture formed by a first component and a second component, the first component comprises at least one of a fluorine-containing compound, oxyacid and oxysalt, and the second component is a surfactant.

The invention discloses a multi-alkyl aromatic alcohol extended block copolymer or oxysalt thereof as well as a synthesis method and application thereof. Molecules of the product contain polyalkyl, aryl, polyoxypropyl / ethyl and various ionic hydrophilic group structures, the product has excellent temperature resistance and salt tolerance and stable chemical properties, the adsorption loss in sandstone is extremely small, any alkaline agent does not need to be added, the crude oil recovery rate can be increased by 40% or above only through a single component at the concentration of 0.3 wt%, and the oil recovery rate can be increased by 30% or above. And the influence of performance degradation of the composite oil-displacing agent in an oil reservoir due to a chromatographic separation effect is avoided.

This proton conductive electrolyte material has a chemical structure which comprises an acidic polymer (2) that contains an oxo acid group represented by -POx(OH)y (wherein x and y are each 1 or more), having a phosphorus atom, and at least one saturated hydrocarbon group in the main chain, and a basic polymer (3) that contains a basic functional group, while having at least one aromatic ring in the main chain, wherein an attractive interaction occurs between the oxo acid group and the basic functional group. This fuel cell is provided with the proton conductive electrolyte material. This method for producing a proton conductive electrolyte material includes: preparing a first solution by means of an acidic polymer and a mixed solvent; preparing a second solution in which a basic polymer is dissolved in a solvent; and preparing a mixed solution in which the first solution and the second solution are mixed. With respect to the preparation of the first or second solution, a mixed solvent which contains an inhibitor that is capable of inhibiting rapid aggregation of the oxo acid group and the basic functional group is prepared.

The present invention discloses a method for preparing an alkaline earth metal catalyst, comprising: (1) adding an alkaline earth metal compound to a polyether polyol under an inert atmosphere, stirring for reaction; (2) lowering the temperature, dripping an inorganic oxygen-containing acid into the reaction solution, stirring for reaction, and obtaining the alkaline earth metal catalyst. The present invention also discloses a method for synthesizing a water reducer monomer polyether, comprising: (1) adding an initiator and an alkaline earth metal catalyst to a reaction vessel; (2) controlling the reaction temperature and reaction pressure, continuously adding an epoxide, and reacting until the pressure no longer decreases, and obtaining the water reducer monomer polyether. In the process of synthesizing the water reducer monomer polyether catalyzed by the alkaline earth metal catalyst of the present invention, no hydrogen is generated, no moisture is generated, the production process is safe, the product can be obtained by one-step polymerization, no neutralization treatment is required, and the content of by-product polyethylene glycol in the product can be significantly reduced, and the product has the advantages of low production cost and good product performance.

The present invention relates to a method of adjusting the oxoacidity of a molten metal hydroxide salt, the method comprising the steps of: estimating a target concentration of at least one of H2O, O2−, and OH— in a molten salt of a metal hydroxide; providing an oxoacidity control component; and contacting the oxoacidity control component with the molten salt of a metal hydroxide to adjust the oxoacidity of the molten salt of a metal hydroxide. The method allows better utilisation of the available temperature range for a molten salt of a metal hydroxide by reducing the corrosive nature of the metal hydroxide.

The invention discloses a method for preparing a scale layer on a secondary side of a steam generator and a test sample piece on the secondary side of the steam generator. The method comprises the following steps: dissolving ferric salt, oxysalt, an acid compound and an organic solvent in deionized water to form a mixed aqueous solution; taking the mixed aqueous solution as a raw material, and depositing a scale layer precursor on a test sample on the secondary side of a steam generator by adopting a hydrothermal method; and heating the scale layer precursor in an inert gas atmosphere so as to form a simulated scale layer on the test sample. According to the method, preparation of the simulated scale layer is completed based on hydrothermal synthesis-high-temperature firing, the ultra-long period of preparing the simulated scale layer through high-temperature and high-pressure corrosion is avoided, rapid preparation of the steam generator secondary side sample sediment simulated scale layer is achieved, and the deposited scale layer growing closer to the actual operation environment can be simulated.

The invention discloses an electrolyte composite additive and application thereof in electrolyzed water (seawater), and belongs to the technical field of hydrogen production by electrolyzed water (seawater). The electrolyte composite additive is a combination of one of oxysalts and sodium benzoate; the concentration of oxysalt in the composite additive in the electrolyte is 5-50 mmol / L, and the concentration of sodium benzoate in the electrolyte is 0.1-5.0 mmol / L; when the composite additive is used in an electrolyte of a water (seawater) electrolysis hydrogen production technology, the corrosion resistance and the stability of a water (seawater) electrolysis catalyst can be improved, and the loss and the inactivation of active sites of the catalyst are effectively inhibited. The composite catalyst has universality for nickel-based catalysts in the field of hydrogen production by electrolyzing water (seawater). The method has great significance in cost reduction and efficiency improvement of a water (seawater) electrolysis hydrogen production technology, and has wide popularization and application prospects.

The invention discloses a chlorine-nitrogen co-coordinated monatomic zirconium adsorbent and application thereof in selective defluorination of high-salinity wastewater, and belongs to the technical field of fluorine-containing wastewater treatment. The preparation method comprises the following steps: self-assembling melamine and cyanuric acid to obtain supramolecules, ball-milling the supramolecules and zirconium chloride, and pyrolyzing twice to obtain the chlorine-nitrogen co-coordinated monatomic zirconium adsorbent. According to the adsorbent, strong electrostatic repulsion is applied to oxygen-containing acid radicals through electronegative nitrogen ligands, and strong coordination is applied to fluorine ions through electropositive zirconium atoms, so that selective capture of low-concentration fluorine ions in high-salinity wastewater is realized. Compared with a traditional adsorbent, the prepared adsorbent has the advantages of being high in fluorine removal capacity, high in salt tolerance and the like, can overcome the defects that a conventional chemical precipitation method, a coagulation method and a flocculation method are large in agent dosage, high in hazardous waste yield, high in treatment cost and the like, and has a wide application prospect.

The invention discloses a method for inhibiting metal chlorine corrosion by using metal oxyacid radical anions and application of the metal oxyacid radical anions, and particularly discloses new application of the metal oxyacid radical anions which can relieve chemical or electrochemical corrosion of a chlorine-containing solution to metal. Metal oxyacid radical ions can form a poly-metal oxyacid radical anion cluster in the electrolysis or electrochemical corrosion process, which reveals that the poly-metal oxyacid radical anion cluster has a specific chemical adsorption effect, an electrostatic repulsion effect on Cl <-> and a steric hindrance effect on the surface of a metal electrode or the surface of a metal substrate; and the interface Cl <-> concentration can be reduced, so that the chlorine corrosion of metal is relieved, and the service life of a metal material in a chlorine-containing environment is prolonged.

The invention relates to the field of organic synthesis, and discloses a preparation method of bifenthrin. The method comprises the following steps: in the presence of a catalyst composition, enabling kung-fu acid and 2-methyl-3-phenylbenzyl alcohol to be in contact for esterification reaction, the catalyst composition comprises a component A and a component B, wherein the component A is selected from an oxyacid ester of an IVB group element and / or a compound formed by the IVB group element and alcohol; wherein the component B is selected from at least one of inorganic salt of copper, oxide of copper, oxide of tin and inorganic salt of tin. The yield of the bifenthrin prepared by the method is high (more than 98%), the purity is high (up to 99.4%), the produced bifenthrin isomers are less (less than 0.5%), the market requirements can be met, and the whole process flow is efficient and environment-friendly.

The present application relates to an organic compound, a solar cell and the use thereof. The organic compound is as represented by formula (1) or is an oxyacid salt of the compound as represented by formula (1), wherein Ar1 and Ar2 are each independently selected from an aryl group having 6-30 ring-forming atoms or a heteroaryl group having 5-30 ring-forming atoms; n2 and n3 are each independently selected from any integer from 0 to 10; Q1 is selected from *–(L1)n4-A; Q2-Q3 are each independently selected from H, *–(L1)n4-A, or *–(L2)n5-H, with A being selected from an oxyacid group; and at least one of Q2 and Q3 is selected from *–(L1)n4-A. The organic compound can improve the photoelectric conversion efficiency of a solar cell.

The present invention relates to a process for recovering one or more metal species from a raw material, such as a spent lithium ion battery material, comprising: providing a molten salt comprising at least one metal hydroxide, providing one or more oxyacidity agents, preferably as a reservoir of one or more oxyacidity agents in communication with the molten salt, the oxyacidity of the molten salt is set to an oxyacidity value at which at least one metal substance is dissolved in the molten salt with the one or more oxyacidity agents, and the raw material is brought into contact with the molten salt, at least one of steps b) and c) is performed: b) setting the potential of the molten salt to recover the first metal species as a first metal or a first metal oxide, c) adjusting the oxyacidity of the molten salt with the one or more oxyacidity agents to precipitate the first metal oxide, d) for one or more additional metal species, optionally, at least one of method steps a) and / or method steps b) and c) is performed.

The present invention relates to the use of at least one oxoacid reducing element, and optionally a salt of the oxoacid reducing element, in a molten chloride fuel salt for a molten-salt nuclear fission reactor (MSR). The present invention also relates to a process of nuclear fission within a molten-salt nuclear fission reactor (MSR), said process being characterized in that it is carried out within the MSR reactor, placed in which is an oxoacid reducing element, and optionally a salt of the oxoacid reducing element. The present invention further relates to a molten-salt nuclear fission reactor (MSR) comprising a molten chloride fuel salt, and a mixture comprising the aluminum metal, and its oxidized form, as an oxoacid reducing element, and optionally a salt of the oxoacid reducing element.

The application discloses a phosphate-based dry film lubricating coating and preparation and application thereof. The coating is obtained by curing components with the following mass fractions, wherein the components consist of the following ingredients: phosphate binder 15-18 parts, sulfide 3-5 parts, silver powder 4-6 parts, oxygen-containing acid salt 1.5-3.5 parts, and metal oxide 0.2-0.32 parts, antioxidant 0.6-1.2 parts, and surfactant 0.1-0.2 parts, and the rest is solvent. The application solves the problems of weak adhesion between the existing coating and the substrate, wide temperature range lubrication from room temperature to 800 DEG C, large friction coefficient, short wear life and high cost. The coating has good adhesion to the substrate material, excellent flexibility and impact resistance, is environment-friendly, low-cost and has excellent friction-reducing and wear-resisting performance, has a low friction coefficient from room temperature to 800 DEG C, especially a friction coefficient < 0.16 at 800 DEG C, and has a long wear life.

The invention discloses a preparation method of an oxyacid radical modified graphite-based cathode for electro-catalysis hydrogen peroxide synthesis. An oxyacid (sulfuric acid or phosphoric acid) and nitric acid are compounded to form a mixed acid solution, and the graphite-based electrode is subjected to oxyacid radical modification by using the mixed acid solution. The preparation method of the oxygen-containing acid modified graphite-based electrode is simple and low in cost, does not need harsh conditions such as high temperature and the like, and has great industrial and large-scale production potential; the oxygen-containing acid radical modified graphite-based cathode prepared by an acid treatment method is used for reducing oxygen to produce hydrogen peroxide, the yield of the hydrogen peroxide exceeds 21.79 mg.cm <-2 >. H <-1 > and is increased by about 20 times compared with the yield (1.13 mg.cm <-2 >. H <-1 >) of oxygen oxidation by using unmodified original commercial carbon paper, and meanwhile, the highest selectivity of the hydrogen peroxide is up to 97.5%.

The present application relates to a perovskite cell, a photovoltaic module, a photovoltaic system, an electrical apparatus, and a power generation apparatus. The perovskite cell comprises a hole transport layer, a passivation layer, and a perovskite material layer which are stacked. The passivation layer contains an ammonium salt compound. In the ammonium salt compound, an anionic group comprises a group formed after at least one hydroxyl group in at least one oxyacid-containing group in a compound represented by formula (1) loses hydrogen, and a cationic group comprises a group formed after an amino group in a compound represented by formula (2) gains hydrogen. The perovskite cell has excellent photoelectric conversion efficiency and stability.

This invention discloses a method for preparing ZSM-5 molecular sieves using a microwave-assisted method with desilication solution, comprising the following steps: First, pretreatment of the desilication solution: the desilication solution is mixed with an oxyacid to adjust the pH to 9-11.5, a template agent is added and mixed evenly to obtain an initial gel; Second, preparation of the ZSM-5 molecular sieve: the initial gel obtained in the first step is placed in a microwave synthesizer for aging with high-speed stirring; the aged solution undergoes a crystallization reaction, followed by filtration, washing, drying, and high-temperature calcination to obtain the ZSM-5 molecular sieve. This invention uses desilication solution as a raw material to prepare ZSM-5 molecular sieves, saving material costs and providing a new approach for the high-value utilization of desilication solution. Furthermore, by utilizing microwave-assisted synthesis on the basis of the traditional hydrothermal method, the time cost is effectively shortened.

The invention belongs to the technical field of electrolyzed water, and particularly relates to an electrolyte additive for improving the reaction performance of electrolyzed water, an electrolyte, an electrolyte solution and a method for improving the reaction performance of electrolyzed water. The additive comprises nonmetal oxosalts (sulfate, phosphate, borate, selenate, silicate, carbonate, perchlorate, trifluoroacetate and the like) and an aqueous solution of the nonmetal oxosalts, and is used as an electrolyte additive for water electrolysis reaction with KOH or NaOH as an electrolyte. The invention provides application of oxysalt to improvement of oxygen evolution activity and stability of electrolyzed water. In particular, the device is also suitable for electrolytic reactions carried out at high and low temperatures. Due to the addition of the oxysalt, the oxygen evolution reaction potential is reduced, the charge transfer resistance is reduced, the electron transmission rate is increased, and relatively high chemical reaction kinetics is achieved, so that the reaction activity is favorably improved.

The invention relates to an acid etching solution for a multilayer film of a display panel, and a preparation method and application of the acid etching solution. The acid etching liquid for the multilayer film of the display panel comprises the following components in parts by weight: 42-54 parts of polybasic mixed acid; 4-6 parts of oxyacid; 1-3 parts of nitrate; 1-2.5 parts of a corrosion inhibitor; and 42-54 parts of ultrapure water. The corrosion inhibitor in the etching liquid is a combination of a thienone compound and vanadium oxychloride, and can be used as the corrosion inhibitor to slow down Mo layer metal etching, and Mura and Underer-cut phenomena are avoided. Compared with the traditional phosphoric acid etching solution, the etching solution provided by the invention has the advantages that the metal ion chelating capability is improved, and the etching life is longer.

The invention provides a single-crystal high-temperature alloy surface microstructure construction method, and relates to the field of electromachining. According to the method, based on the electrochemical machining principle, the surface appearance is accurately regulated and controlled by optimizing electrolyte components and process parameters and utilizing the difference of gamma phase and gamma'phase electrochemical dissolution behaviors. The method specifically comprises the following steps: in an ethylene glycol solution dissolved with halide salt, preferentially dissolving a gamma'phase to form a latticed surface; in an ethylene glycol solution in which oxyacid salt is dissolved, the gamma phase is deeply dissolved to form a columnar surface. Optimized current density processing parameters are adopted, so that the dissolution uniformity and the structural stability are further improved. In addition, a scanning electron microscope (SEM) is used for carrying out characterization verification on the surface appearance and the microstructure after dissolution. According to the technology, precise preparation of the high-quality surface interface of the single-crystal high-temperature alloy is achieved, and an innovative solution is provided for surface function optimization of high-performance parts such as turbine blades.

To provide a cleaning solution that can efficiently remove titanium residues and has excellent anti-corrosion properties, and a semiconductor substrate cleaning method and a method for manufacturing a semiconductor using this solution.SOLUTION: A cleaning solution having an acid dissociation constant pKa of less than 5.0, containing more than divalent oxoacids, and a pH value less than the acid dissociation constant, a semiconductor substrate cleaning method using the same, and a method for manufacturing the semiconductor are provided.SELECTED DRAWING: Figure 1

An aqueous battery includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; and an aqueous electrolytic solution provided between the positive electrode and the negative electrode, the negative electrode active material contains a hydrogen storage alloy, and the aqueous electrolytic solution contains: a solvent containing water; and a potassium salt of a phosphorus oxoacid that is dissolved in the solvent, and represented by the general formula K2+nPnO3n+1, wherein n is an integer of 1 or more.

The present invention provides an electrochemical oxygen reduction catalyst having high proton conductivity and high durability. One embodiment of the present invention relates to an electrochemical oxygen reduction catalyst comprising a catalytic metal that has oxygen reduction activity and a modification layer that modifies the catalytic metal, wherein the modification layer contains a nitrogen-containing cyclic organic compound, or a polymer thereof, or a cation thereof, and an unsubstituted oxoacid or an anion thereof. Another embodiment of the present invention relates to a fuel cell comprising at least: a cathode electrode catalyst layer containing the electrochemical oxygen reduction catalyst according to the one embodiment of the present invention; an anode electrode catalyst layer; and an electrolyte membrane disposed between the cathode electrode catalyst layer and the anode electrode catalyst layer. Still another embodiment of the present invention relates to a method for producing the electrochemical oxygen reduction catalyst according to the one embodiment of the present invention, the method including a modification step in which a catalytic metal containing platinum or a platinum alloy, and a modifier containing a nitrogen-containing cyclic organic compound, or a polymer thereof, or a cation thereof, and an unsubstituted oxoacid or an anion thereof are mixed to modify the catalytic metal.

The purpose of the present invention is to provide a technique whereby the decomposition of a surfactant can be greatly suppressed without adding a stabilizer. The problem is solved by a method for suppressing decomposition of a surfactant in a cleaning solution for aluminum or an aluminum alloy, the cleaning solution containing an inorganic acid, iron ions, and 0.1-10 g / L of the surfactant, the cleaning solution having a pH of 2 or less. The method includes a step of adding one or more oxoacid salts selected from the group consisting of monooxygenated acid salts and diooxygenated acid salts to the cleaning solution.

The application discloses an isomerization catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The isomerization catalyst comprises a carrier and an active component; the active component is a transition metal oxide, and the transition metal is one or more of Mn, Ir and Cu; the carrier is a composite metal oxide and / or a metal oxyacid salt; the composite metal in the composite metal oxide comprises an element A and an element B; and the metal oxyacid salt comprises a metal cation and a metal oxyacid anion. The isomerization catalyst is used for a gas phase catalytic cis-1-chloro-3,3,3-trifluoropropene isomerization reaction to generate trans-1-chloro-3,3,3-trifluoropropene, has high conversion rate, high selectivity, a service life of more than 1000 hours in continuous use, and excellent anti-coking capacity, thermal stability and anti-poisoning performance.

A substrate processing method according to one embodiment of the present disclosure includes preparing a substrate having a target film exposed on a surface of the substrate, forming a liquid film on a surface of the target film by supplying an ionic liquid containing an oxoacid structure having 6 or more carbon atoms to the surface of the substrate at a first temperature, forming a solid film by cooling the substrate to a second temperature lower than the first temperature to solidify the liquid film, and removing the solid film by supplying a polar solvent to the substrate.

This invention belongs to the field of oxyacid synthesis technology of phosphorus, specifically relating to a method for producing phosphorous acid. The production method includes: (1) adding a metal precursor, organic ligand, reaction promoter, structure directing agent and swelling resistant agent to a pore-forming agent and heating to react, to obtain a mixture; then mixing the mixture with a polymer monomer, crosslinking agent and initiator to obtain an oil phase for later use; mixing a dispersant with water and removing oxygen to obtain an aqueous phase for later use; (2) mixing the oil phase and the aqueous phase to carry out a crosslinking reaction to obtain a crude product; (3) washing, acidifying and vacuum drying the crude product to obtain a porous polymer carrier; (4) after the porous polymer carrier swells in water, adding phosphorus trichloride to it, carrying out a heat preservation reaction, and post-treatment to obtain phosphorous acid. This invention improves the production efficiency of phosphorous acid while ensuring a high yield of phosphorous acid by preparing a porous polymer carrier and using it as a medium for the hydrolysis of phosphorus trichloride to prepare phosphorous acid.

The present invention relates to a method of adjusting the oxoacidity of a molten metal hydroxide salt, the method comprising the steps of: estimating a target concentration of at least one of H2O, O2—, and OH— in a molten salt of a metal hydroxide; providing an oxoacidity control component; and contacting the oxoacidity control component with the molten salt of a metal hydroxide to adjust the oxoacidity of the molten salt of a metal hydroxide. The method allows better utilisation of the available temperature range for a molten salt of a metal hydroxide by reducing the corrosive nature of the metal hydroxide.

The invention relates to a perovskite cell, a photovoltaic module, a photovoltaic system, a power utilization device and a power generation device. The perovskite cell comprises a hole transport layer, a passivation layer and a perovskite material layer which are arranged in a stacked mode. The passivation layer contains an ammonium salt compound; in the ammonium salt compound, an anion group comprises a group formed after at least one hydroxyl group in at least one oxyacid group in a compound shown in a formula (1) loses hydrogen, and a cation group comprises a group formed after an amino group in a compound shown in a formula (2) obtains hydrogen. The perovskite cell has excellent photoelectric conversion efficiency and stability.