306 results about "Perchloric acid" patented technology

The invention provides a hydrated eutectic electrolyte as well as a preparation method and application thereof. The electrolyte comprises water-soluble zinc salt, deionized water and a deep eutectic solution, the deep eutectic solution is formed by mixing zinc perchlorate and a polar deep eutectic solvent and performing deep eutectic crystallization. The electrolyte has the characteristics of low water activity, low freezing point and efficient induction of uniform deposition of zinc, can be compatible with an iodine-loaded positive electrode and can inhibit dissolution of iodine, and the characteristics are beneficial to inhibition of hydrogen evolution reaction, polyiodine shuttling and other side reactions in the battery circulation process, promote uniform deposition of zinc, protect the integrity of an iodine electrode, and improve the electrochemical performance of the battery. The stable operation of the zinc-iodine battery is ensured; the electrolyte is a zinc sulfate solution containing a ZnClO4 / dimethyl sulfoxide deep eutectic solvent, the solution is combined with free water to form a eutectic structure, the eutectic structure participates in construction of a Zn < 2 + > ion solvation shell, extra intramolecular hydrogen bonds are introduced for the electrolyte, meanwhile, hydrogen bonds among water molecules are weakened, so that the internal energy of the electrolyte is enhanced, the freezing point is reduced, and the flowability is improved.

This invention discloses a method for dissolving NiCrPSi nickel alloy samples for ICP-OES detection, comprising the following steps: mixing the NiCrPSi nickel alloy sample to be tested with hydrochloric acid aqueous solution, concentrated nitric acid, and hydrofluoric acid aqueous solution, digesting at 120-140℃ for 1.5-2.5h, and then evaporating the solution to dryness at 220-260℃; then adding nitric acid aqueous solution and heating until the solid is completely dissolved, and then diluting with water to obtain the NiCrPSi nickel alloy test solution. The dissolution method of this invention can completely dissolve NiCrPSi nickel alloy powder without elemental loss, providing an accurate sample solution for ICP-OES detection; and it eliminates the need for specialized equipment such as microwave digesters or electrothermal digesters, as well as special reagents such as perchloric acid and tartaric acid, using only conventional acid reagents and general experimental equipment, thus reducing costs, simplifying operation, and enhancing versatility.

This invention relates to a method for synthesizing an acid-base indicator from cellulose. The method involves mixing a cellulose raw material with a non-volatile acid, heating and carbonizing the mixture in high-temperature air, washing the carbonized material with water, neutralizing the suspension with alkali, filtering to remove inorganic salts, and evaporating the water to obtain the acid-base indicator. The cellulose raw material is cellulose and / or materials containing cellulose, and the non-volatile acid includes one or more of sulfuric acid, phosphoric acid, perchloric acid, benzenesulfonic acid, p-toluenesulfonic acid, and benzoic acid. This invention utilizes non-toxic, harmless, and low-cost cellulose as a raw material to prepare the acid-base indicator through a simple and environmentally friendly production process. The synthesis technology has advantages such as low raw material price and easy availability, simple preparation process, no environmental pollution, and easy product separation.

A quantitative detection method of thallium content in converter graphite ball, steps include: 1) the pretreatment of converter graphite ball; 2) the preparation of standard solution series; 3) the detection of thallium content in converter graphite ball.The application finds that the suitable pretreatment method of converter graphite ball is carbon removal by burning, and then high-chloric acid and dilute nitric acid are used to dissolve salt, by which the converter graphite ball can be completely dissolved, thereby the stability of quantitative determination of thallium content in converter graphite ball is improved, the pretreatment method is simple, fast and operable; the method is suitable for the quantitative detection of thallium content in converter graphite ball with thallium content not less than 0.0062 μg / L, the recovery rate of thallium is as high as 99.1%, the analysis accuracy is high, the detection lower limit is as low as ppb level, the sensitivity is high, and the method has the advantages of simple operation, simple analysis condition and low labor intensity.Therefore, the application has significant economic benefits and the advantages of simplicity and economy.

This invention provides a temperature-resistant shape memory polymer plugging agent, its preparation method, and its application, belonging to the field of oil and gas drilling technology. The preparation method of this plugging agent includes the following steps: mixing acetic acid and perchloric acid to obtain a mixed acid, then adding bromate, potassium permanganate, and natural flake graphite, and stirring to obtain low-temperature expanded graphite; mixing cyanate ester, linear aliphatic epoxy resin, and an active diluent, then adding low-temperature expanded graphite, organotin compounds, and amine catalysts, and carrying out a curing reaction to obtain a temperature-resistant shape memory polymer material; testing the glass transition temperature (Tg) of the synthesized temperature-resistant shape memory polymer material, compressing it at (Tg+5)~(Tg+10)℃, and then cooling, pulverizing, and granulating to obtain the final product. The plugging agent of this invention can rapidly recover its original shape at high temperatures, accumulate and seal leakage channels, and form a high-strength sealing layer in fractures, meeting the requirements of safe and efficient drilling.

This invention discloses a method for determining the arsenic content in ores, belonging to the field of ore element detection technology, comprising the following steps: (1) weighing the ore sample, adding hydrochloric acid-nitric acid mixed acid for acid hydrolysis, then adding hydrofluoric acid and perchloric acid for auxiliary digestion, evaporating to near dryness, and dissolving the residue with hydrochloric acid; (2) adding a thiourea-ascorbic acid-citric acid mixed reducing masking agent to reduce and mask interfering ions; (3) using an atomic fluorescence spectrometer to determine the fluorescence intensity of arsenic in the sample solution, and calculating the arsenic content according to the standard curve. This method achieves accurate and stable determination of arsenic in various ores such as phosphate rock and iron ore by optimizing sample pretreatment conditions, improving the reduction system and matrix interference suppression strategy.

The invention relates to the field of glass detection, and particularly discloses a method for testing the content ratio of ferrous iron to ferric iron in glass. The method specifically comprises the following steps: washing a to-be-detected glass sample, grinding into micro powder, drying, respectively taking the same amount of glass micro powder, and marking as a sample 1 and a sample 2; divalent iron can be converted into ferric iron by adding perchloric acid into the sample 1, and the test result is the content of total iron in the glass. And dimethyl silicone oil is added into the sample 2 so as to isolate air and prevent ferrous iron from being oxidized into ferric iron in the testing process to influence the experiment result. According to the method, the proportion of Fe < 2 + > to Fe < 3 + > in an unknown glass sample can be simply and quickly obtained, the result is accurate and reliable, the test period is short, and the working efficiency is greatly improved.

The invention provides an energetic complex K-BTE and a continuous preparation method and application thereof.The continuous preparation method comprises the steps that 1, 2-bis (tetrazole-5-yl) ethane serves as an initial raw material, a ligand solution and a metal ion salt solution are continuously injected into a continuous flow reaction unit through an injection pump, and energetic complex crystals are obtained through filtering, washing and drying; a novel energetic complex preparation method which is simple and continuous in process and mild in reaction condition is developed, the energetic complex K-BTE which is novel in structure and excellent in comprehensive performance is prepared for the first time, and the energetic complex K-BTE has the characteristic of high thermal stability and also has the advantages of being simple and efficient in process method and safe and controllable in process; the thermal decomposition temperature of K-BTE reaches up to 366.5 DEG C, the actually measured impact sensitivity is greater than 40J, the friction sensitivity is between 240N and 360N, and meanwhile, the thermal decomposition of ammonium perchlorate is catalyzed. Due to the excellent performance of the K-BTE, the K-BTE has huge application potential in the field of catalyzing the combustion efficiency of solid propellants as an energetic complex.

The invention discloses a two-dimensional carbon-based catalyst material as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The preparation method comprises the following steps: by taking aniline as a carbon source and a nitrogen source, initiating oxidative polymerization by ammonium persulfate in a perchloric acid solution containing a metal precursor to generate metal-doped polyaniline; and heating the polymer to induce an explosion reaction so as to realize rapid stripping and carbonization of polyaniline and finally obtain the two-dimensional carbon-based material. The method provided by the invention has the advantages of low initiation temperature, extremely short reaction time and remarkable energy-saving advantage, the obtained material shows excellent catalytic performance and good stability in various systems such as energy conversion and electro-catalytic synthesis as an electrode catalyst, and the preparation process is low in raw material cost, simple to operate, low in energy consumption, small in environmental pollution and suitable for industrial production. And the method has a good large-scale application prospect.

The invention discloses a rapid detection method for talcum powder in food, and relates to the technical field of element analysis and detection. The detection method comprises the following steps: uniformly mixing a to-be-detected sample with nitric acid, perchloric acid and sulfuric acid, heating and digesting, supplementing nitric acid and continuing digesting, and increasing the heating and digesting temperature until the to-be-detected sample is completely digesting to obtain a digesting solution; adding the digestion solution into a colorimetric tube, adding water to a scale, and uniformly shaking to obtain a to-be-detected sample colorimetric solution; mixing another to-be-detected sample with the same mass with talcum powder to obtain a control sample, and treating according to the same method to obtain a control sample colorimetric solution; performing oscillation treatment on the to-be-detected sample colorimetric solution and the control sample colorimetric solution, and performing turbidity comparison under a black background through turbidimetry to obtain a detection result. The method is quick and simple to operate, high in sensitivity, high in accuracy, safe, efficient and energy-saving, the detection period is shortened by half compared with that of a national standard method, and the talcum powder in batch food can be detected at the same time.

The application belongs to the technical field of drying devices, and relates to an ammonium perchlorate filtering and drying device and a drying method thereof. The drying device comprises a drying box, a heating element is arranged in the drying box, a filtering assembly is arranged in the drying box, rotating plates are rotatably arranged at two ends of the drying box, and two mounting plates of the filtering assembly are slidably connected in the drying box. One of the two mounting plates of the same filtering assembly is fixedly connected with the corresponding rotating plate, and the other mounting plate is rotatably connected with the rotating plate. The rotating plate drives the filtering assembly to rotate, filters the ammonium perchlorate, and makes the caked ammonium perchlorate stay on the filter screen. The filtering assembly is folded, and then the caked ammonium perchlorate is preliminarily extruded and crushed. The ammonium perchlorate is dispersed into the folds of the filtering assembly, the ammonium perchlorate is prevented from being accumulated together, and the crushing efficiency is improved. The filtering assembly is twisted and deformed, the ammonium perchlorate is extruded and crushed, and the drying efficiency and drying effect are improved.

This invention provides a method for the simultaneous and rapid detection of four oxidative stress-related biomarkers and its application. The detection method includes: (S1) pretreatment of samples using a protein precipitation extract to simultaneously extract four target compounds: 8-hydroxydeoxyguanosine, 8-isoprostaglandin F2β, 8-isoprostaglandin F2α, and acetyllysine, and preparing a test solution; the protein precipitation extract is a methanol-acetonitrile-perchloric acid mixed solution containing formic acid, wherein the volume ratio of methanol, acetonitrile, and perchloric acid is (8-10):(8-10):(0.5-1), and the volume concentration of formic acid is 0.1-0.5%; (S2) detection of the test solution and standard solution using liquid chromatography-tandem mass spectrometry, and matrix calibration using an internal standard method; plotting a standard curve with the peak area ratio of the target compound to the internal standard as the ordinate and the concentration as the abscissa; and calculating the concentration of the target compound in the test solution based on the standard curve.

The invention relates to the technical field of new energy and mining and blasting, in particular to a preparation method of a biomass instantaneous cracking agent. The preparation method comprises the following steps: mixing biomass powder, pulverized coal, an oxidant, a catalyst and a release agent to obtain mixed powder; mixing the adhesive, the water and the preservative to prepare a glue solution; the glue solution and the mixed powder are kneaded, granulated and dried, and the biomass instantaneous cracking agent is obtained, the biomass powder accounts for 4-55 parts by mass, the pulverized coal accounts for 0-48 parts by mass, the oxidizing agent accounts for 0-45 parts by mass, the catalyst accounts for 0-20 parts by mass, the release agent accounts for 0-2.5 parts by mass, the adhesive accounts for 2-10 parts by mass, the preservative accounts for 0-0.15 part by mass, and the oxidizing agent and the catalyst are not 0 at the same time; the oxidizing agent is potassium peraluminate powder and / or ammonium perchlorate powder; the catalyst is potassium nitrate powder and / or sodium nitrate powder. The biomass instantaneous cracking agent prepared by the invention solves the problems of long stone cracking time, low efficiency and environmental pollution of the existing stone cracking agent.

The application discloses a separation method of tetrafluoropropylene and tetrafluoroethane mixture, mainly comprising the following steps: taking the tetrafluoropropylene and tetrafluoroethane mixture as raw materials, adding ionic liquid in an extractive rectification tower, and performing extractive rectification on the raw materials, wherein the cation of the ionic liquid has the structure of formula (I), and the anion is one of perchlorate ion [ClO4] or fluorosulfonylimide [FSI] ion. In formula (I), R and R' are respectively selected from C1-C4 alkyl. The specified ionic liquid is added in the extractive rectification tower, high-efficiency separation of the tetrafluoropropylene and tetrafluoroethane mixture is realized, high-purity tetrafluoropropylene and tetrafluoroethane can be obtained, the mass purity of the tetrafluoropropylene and tetrafluoroethane products can be as high as 99.6%, and compared with other ionic liquids, the ionic liquid used in the application has smaller energy consumption in the extractive rectification separation process under the condition of obtaining products with the same purity, and the annual economic cost is lower.

The invention belongs to the technical field of ammonium perchlorate modification, and particularly relates to a low-sensitivity ammonium perchlorate composite material and a preparation method thereof. The preparation method of the composite material comprises the following steps: (1) mixing diethanol amine and an insensitive material to obtain a coating material; (2) adding a part of ammonium perchlorate into a stirrer according to a sandwich type feeding method, spreading the bottom of the stirrer, adding a coating material, finally adding the rest ammonium perchlorate, lifting a stirrer material cylinder, and starting a stirring reaction when the bottom of a stirring paddle is about to touch the material; and (3) after the reaction is finished, stirring and cooling the reaction system to obtain the ammonium perchlorate composite material with low friction sensitivity and impact sensitivity. The process provided by the invention is suitable for preparing low-sensitivity ammonium perchlorate with various particle sizes, has the advantages of simple process flow, good reproducibility, easiness in amplification and almost no pollution to the environment, and does not influence the performance of ammonium perchlorate while reducing the sensitivity of ammonium perchlorate.

The application provides a composite iron phosphate and a preparation method and application thereof, and the preparation method comprises the following steps: (1) mixing nanocellulose, glacial acetic acid, acetic anhydride, perchloric acid and an organic solvent to obtain acetylated nanocellulose through reaction; (2) mixing nanocellulose, TEMPO and sodium bromide with water, adding sodium hypochlorite solution to obtain oxidized nanocellulose through reaction; (3) mixing the oxidized nanocellulose and the acetylated nanocellulose with an acidic aqueous solution, then mixing with an oily solvent to obtain a water-in-oil emulsion; (4) mixing an iron source, a phosphorus source and the water-in-oil emulsion, and then obtaining the composite iron phosphate through sintering treatment after reaction. The application utilizes the different hydrophilic / hydrophobic difference of acetylated and oxidized nanocellulose to induce the generation of a spherical shell-shaped iron phosphate filled with rod-shaped structures, the nanocellulose forms carbon in situ after high-temperature calcination, and the uniform distribution of the carbon layer is realized, and the conductivity is further improved.

The utility model belongs to the technical field of ammonium perchlorate processing, and discloses an ammonium perchlorate vacuum crystallizing tank convenient to clean and dry, which comprises a tank body, a fixing frame is fixedly mounted on the outer surface of the tank body, a tank cover is arranged at the top end of the tank body, a discharge pipe is fixedly communicated with the bottom end of the tank body, a discharge valve is fixedly mounted on the discharge pipe, and a discharge valve is fixedly mounted on the discharge valve. A driving motor is fixedly mounted at the top end of the tank cover, and a vacuum pump is fixedly mounted at the bottom end of the tank body; through the inner cylinder and the outer cylinder arranged in the tank body, the screw rod is rotated to enable the outer cylinder to move downwards, so that pores of the inner cylinder are exposed, then the motor is started to enable the inner cylinder to move and rotate along with the rotating shaft, cleaning liquid in the inner cylinder is sputtered to the inner wall of the tank body, and crystals remaining on the inner wall of the tank body are softened and fall off.

The invention relates to the technical field of energetic materials, in particular to nickel fluoride catalyzed ammonium perchlorate / aluminum composite fuel and a preparation method and application thereof. The ammonium perchlorate / aluminum composite fuel consists of the following components in percentage by mass: 50-70% of ammonium perchlorate, 0-10% of nickel fluoride and the balance of aluminum powder. Due to the addition of NiF2, high and low decomposition peaks of AP are combined into a violent exothermic peak, and the temperature of the high-temperature decomposition peak is reduced by about 30 DEG C, which means that the burning rate of the propellant can be greatly improved; the heat effect of the fluorination reaction (55.98 kJ. G <-1 >) of aluminum is far higher than the heat effect of the oxidation reaction (31.05 kJ. G <-1 >) of aluminum, so that the explosion heat is improved by about 10% while the reaction path is optimized. Besides, the anhydrous NiF2 used in the formula is stable in physical and chemical properties and does not absorb moisture and deliquesce, the problem of long-term storage of common fluorides such as CuF2 and FeF3 is solved, and the product reliability is extremely high.

The invention discloses a composite propellant containing a high-nitrogen ferrocene derivative and a preparation method of the composite propellant. The composite propellant is prepared from the following components: 14.05% of hydroxyl-terminated polybutadiene (HTPB), 7.03% of diisooctyl sebacate (DOS), 0.92% of 2, 4-toluene diisocyanate (TDI), 1% of the high-nitrogen ferrocene derivative, 59% of ammonium perchlorate (AP) and 18.00% of aluminum powder (Al). N, N-dimethylaminomethylferrocene in the three high-nitrogen ferrocene derivatives has the effects of improving the burning rate of the composite propellant and reducing the pressure index as the ferrocene derivative, nitrate, picric acid, 3-nitro-1, 2, 4-triazole-5-ketone and the like are rich in C, H, O and N elements, and are similar to oxidizing agents such as typical components ammonium nitrate, HMD and the like in the composite propellant; the fuel can be decomposed to provide energy for propellant combustion; the propellant has a low combustion rate pressure index in a pressure range of 1-10 MPa, and has more excellent combustion stability.

The present application belongs to the technical field of packaging, and relates to a ton bag packaging machine and application thereof in the production of ammonium perchlorate. The packaging machine comprises a mounting plate, a moving plate and a supporting assembly; the mounting plate is fixed at the top end of a supporting rod; the moving plate is installed below the mounting plate, and a filling assembly is installed on the moving plate; a plurality of extension plates are fixedly installed on the moving plate, and each extension plate is provided with the supporting assembly. The supporting assembly comprises a first clamping piece and a second clamping piece; the first clamping piece comprises two first clamping plates, and the second clamping piece comprises two second clamping pieces; each second clamping piece comprises two second clamping plates which are parallel to each other. When the lifting belt is broken, the first clamping piece and the second clamping piece clamp the lifting belt under the action of the first transmission member and the second transmission member, and the two broken lifting belts are clamped and fixed. This is favorable for keeping the ton bag stable, thereby keeping the subsequent filling quality, and avoiding the inclination of the ton bag in the subsequent filling process.

The invention belongs to the technical field of adsorption materials, and particularly relates to a hydroxyl-free lead dioxide-based nitric oxide absorbent and a preparation method thereof. The method comprises the following steps: preparing a mixed solution of perchloric acid and lead perchlorate, standing to form a saturated solution, and performing electrodeposition by using the saturated solution as an electrolyte to obtain a lead dioxide deposition layer; and cleaning, drying and crushing the sediments, drying the sediments in an air dry oven with an air exchange function, and calcining the sediments at high temperature to form a target product. The obtained absorbent has the characteristics of hydroxyl-free structure, nanoscale particle size, high porosity, excellent adsorption performance and the like. Test results show that the absorbent has good selective adsorption capacity on NO2, and the adsorption efficiency can reach 85% or above. The material is suitable for nitrogen oxide interference absorption in the determination process of the hydrocarbon content in coal, and has important application value.

The invention provides a reflective integrated electrochromic device. The reflective integrated electrochromic device sequentially comprises a first substrate layer, a working electrode layer, an integrated electrochromic layer, a counter electrode layer and a second substrate layer, the integrated electrochromic layer comprises a metal source compound; the metal source compound is selected from silver chloride, silver acetate, silver nitrate, silver perchlorate, silver sulfate, silver cyanide, silver sulfide, silver hexafluorophosphate, silver tetrafluoroborate, silver tetrachloroaluminate, silver trifluoromethanesulfonate, silver bis (trifluoromethane sulfonimide), copper fluoride, copper chloride, copper cyanide, copper sulfate, copper acetate, copper aluminate, cuprous fluoride, cuprous chloride, cuprous cyanide, gold chloride and gold cyanide; the catalyst is one or more of gold sulfide, gold chloride, gold (II) sulfide, nickel chloride, nickel sulfate, cobalt chloride and platinum chloride. The device has a relatively large transmittance / reflectivity dynamic change range, can perform light and heat management at the same time, and can keep a stable coloring or fading state for one month or even several months under a no-load condition.

The application discloses an interface control liquid for prelithiation electrodes, a preparation method and application, and the interface control liquid comprises a solvent and a metal salt; the solvent comprises one or more of an ether solvent, an ester solvent, a ketone solvent, a hydrocarbon solvent, a nitrile solvent or deionized water; the metal salt comprises one or more of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium bisoxalate borate, lithium bisfluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium perchlorate, lithium fluoride and lithium chloride; the concentration of the metal salt is 0.001 g / mL-10 g / mL; the prelithiation electrode is obtained by supplementing lithium to an electrode by a chemical prelithiation solution; the interface control liquid is used for modifying the prelithiation electrode, the metal salt of the interface control liquid reacts with the chemical prelithiation solution remaining on the surface of the prelithiation electrode, and a solid electrolyte layer containing inorganic lithium salt is generated on the surface of the prelithiation electrode; wherein, the content of the inorganic lithium salt is between 5% and 90%.

The utility model discloses a layered ammonium perchlorate centrifugal machine with a separating mechanism, which relates to the technical field of ammonium perchlorate processing and comprises a centrifugal machine body, a feeding hopper is arranged at the top of the centrifugal machine body, a first square groove is formed in the side wall of the feeding hopper, a feeding box is arranged in the first square groove, and a discharging box is arranged in the feeding box. A storage box is arranged above the centrifugal machine body, a second square groove is formed in the side, close to the feeding hopper, of the storage box, the end, located outside the feeding hopper, of the feeding box communicates with a soft sleeve, and the end, away from the feeding box, of the soft sleeve is fixedly connected to the storage box. According to the layered ammonium perchlorate centrifugal machine with the separation mechanism, the feeding box, the soft sleeve and other structures are arranged, the feeding box swings in the first square groove, meanwhile, the soft sleeve is made to shake, the situation of feeding blockage is avoided, the inclination angle of the feeding box can control the discharging speed, and the discharging efficiency is improved. And the use efficiency of the layered ammonium perchlorate centrifugal machine with the separation mechanism is improved.

The application discloses a rapid evaporation salt collecting device for ammonium perchlorate mother liquor and relates to the technical field of evaporation salt collecting devices. The device comprises an operation table, the upper surface of the operation table is fixedly connected with an inner barrel, the outer part of the inner barrel is fixedly connected with an outer barrel, a heating cavity is formed between the inner barrel and the outer barrel, a coil pipe is arranged in the heating cavity, the coil pipe is fixedly connected to the outer wall of the inner barrel, the top end of the coil pipe is in communication with the heating cavity, a rotary pipe is arranged in the bottom of the inner barrel, a rotary joint is in communication with the bottom of the rotary pipe, a connecting pipe is in communication with the bottom of the rotary joint, and the end, which is away from the rotary joint, of the connecting pipe is in communication with the coil pipe. The rapid evaporation salt collecting device for ammonium perchlorate mother liquor drives the stirring blade to rotate through the sliding sleeve, the stirring blade stirs the ammonium perchlorate mother liquor, the temperature of the ammonium perchlorate mother liquor at all positions in the inner barrel is basically uniform, the phenomenon that the mother liquor is unevenly heated is avoided, the evaporation time is shortened, and the evaporation efficiency is improved.

The invention discloses a preparation method of a molybdenum-niobium alloy metallographic sample, and relates to the technical field of preparation of samples for alloy testing, the preparation method comprises the steps of sampling, grinding, polishing and corrosion, in the corrosion step, a mixed solution of perchloric acid and ethanol is adopted as an electrolyte, the volume ratio of the perchloric acid to the ethanol is (1-2): (10-12), and the volume ratio of the perchloric acid to the ethanol is (1-2): (10-12). The anode material is a molybdenum-niobium alloy metallographic sample, the cathode material is an alloy material containing 16-18% of chromium, 10-14% of nickel and other components of iron, the voltage is 3-5 V, and the electrolysis time is 5-15 s. Compared with a traditional chemical corrosion or strong acid system electrolytic corrosion process, the method has the advantages that the grain boundary is clearly revealed, and the grain size evaluation is accurate and reliable; the multiphase structure contrast is enhanced, and the second phase recognition capability is remarkably improved; the plastic deformation and recrystallization structure resolution capability is high; the corrosion process is high in controllability and excellent in repeatability and stability; and scientific judgment on the real microstructure of the molybdenum-niobium alloy is remarkably improved.

The invention belongs to the technical field of wastewater treatment, and provides a method for treating wastewater containing perchlorate, which comprises the following steps of: adding mixed quaternary ammonium salt into the wastewater, reacting the mixed quaternary ammonium salt with the perchlorate in the industrial wastewater to generate perchlorate quaternary ammonium salt precipitate, and filtering to remove the perchlorate quaternary ammonium salt in the wastewater to realize the enrichment of the perchlorate, the perchlorate in the industrial wastewater can be reduced to 0.02 mg / L or below. According to the process provided by the invention, the perchlorate in the wastewater is directly recycled in the form of the perchlorate quaternary ammonium salt precipitate, and the recycled perchlorate quaternary ammonium salt precipitate can be used as an oxidant for producing fireworks, so that the perchlorate quaternary ammonium salt is reused, and high-added-value recycling is realized.

The application discloses a method for detecting the content of chromium in laterite nickel ore, and comprises the following steps: S1, nitric acid, phosphoric acid, perchloric acid and sulfuric acid are sequentially added into a to-be-detected sample of the laterite nickel ore, and the mixture is uniformly mixed to obtain a mixed solution A; S2, when the amount of the nitric acid is not 0, the mixed solution A is heated to remove water and the nitric acid, and then is heated again to remove the perchloric acid, so as to obtain a mixed solution C; when the amount of the nitric acid is 0, the mixed solution A is directly heated to remove water and the perchloric acid, so as to obtain the mixed solution C; S3, after the mixed solution C is cooled, water is added to dilute the mixed solution C, the mixed solution C is boiled again to dissolve salts, and after being cooled, the mixed solution C is filtered and diluted for standby, and is recorded as a mixed solution D; and S4, the mixed solution D is determined by ICP, and the content of the chromium in the laterite nickel ore is calculated. By means of the oxidation-reduction reaction of the nitric acid, the phosphoric acid, the perchloric acid and the sulfuric acid, and the determination by ICP, the problems of few test analysis methods, long detection time and complicated steps in the hydrometallurgy of the laterite nickel ore are solved.

The invention provides a method for detecting the content of zinc in a lithium-zinc binary alloy strip based on ICP-OES, and belongs to the technical field of metal material component analysis. According to the method, the lithium matrix is separated by adopting a nitric acid-perchloric acid digestion system, and the stock solution is diluted by 500 times, so that the concentration of the lithium matrix can be efficiently reduced, meanwhile, the signal inhibition effect is effectively eliminated by combining lithium salt matching, and the detection precision is greatly improved. According to the method, Zn 213.856 nm analysis spectral lines are carefully selected, RF power is optimized, spectral interference of other elements can be avoided, the linear range can be expanded, and the method is suitable for rapid determination of the zinc content of 1%-20%. According to the method, the detection limit can reach 0.01%, the relative standard deviation is smaller than or equal to 1.0%, the recovery rate is 98.5%-101.2%, and high-precision detection is achieved.

The application discloses a kind of nitrogen-rich oxygen three-component high-energy density materials and synthesis method thereof.By introducing high-energy or low-sense energetic anion and cation to regulate neutral compound performance is the most direct and effective way to alleviate the contradiction between energy and stability of energetic material,can fundamentally realize the dual promotion of energy and stability.Nitrogen-rich compound 4,5-diamino-3-aminomethyl-1,2,4-triazole is used as substrate,ionization reaction is carried out with perchloric acid,then hydroxylamine ion is introduced by intermolecular force,obtains nitrogen-rich oxygen three-component high-energy density material.The synthesis method has the characteristics of easy-to-obtain raw materials,operation is simple,high safety,high yield and the like.