26 results about "Sodium perchlorate" patented technology

According to the sodium chlorate solution filter provided by the utility model, the structure of the sodium chlorate solution filter is improved, so that the filtering effect and the filtering efficiency of the sodium chlorate solution filter are improved. The sodium chlorate solution filter comprises a shell, a solution inlet pipe, a solution outlet pipe and a plurality of filter sticks, wherein the solution inlet pipe and the solution outlet pipe are communicated with the shell, the filter sticks are arranged in the shell, each filter stick comprises a supporting cylinder with an inner cavity, a plurality of liquid inlet holes are formed in the cylinder wall of each supporting cylinder, and the filter screens cover the liquid inlet holes; and the inner cavity of the supporting cylinder is directly or indirectly communicated with the solution outlet pipe. By the adoption of the sodium chlorate solution filter, the temperature resistance of the sodium chlorate solution filter can be remarkably improved, and the filtering effect and efficiency of the filter are improved.

The present application relates generally to processes, systems, and compositions for disposal of liquid elemental mercury (Hg0) collected during processes such as crude and natural gas processing. In one embodiment, the application pertains to a process for converting Hg0 to HgS. The process comprises electrolytically oxidizing an aqueous composition comprising Hg0 to form dissolved Hg2+ in the presence of a composition comprising acetylacetone; sodium perchlorate; and perchloric acid. The formed dissolved Hg2+ is reacted with Na2S to form HgS. The formed HgS may be separated using a solid-liquid separation process.

The invention provides a preparation method and application of a mesoporous material Ce / Ti-UiO-66-NH2, and the preparation method comprises the following steps: 1) mixing a certain amount of template agent, ceric ammonium nitrate, terephthalic acid, TMB, acetic acid and sodium perchlorate, dissolving in deionized water, and reacting to obtain Ce-UiO-66; (2) adding a certain amount of tetrabutyl titanate into a N, N-dimethylformamide solution containing Ce-UiO-66, and carrying out hydrothermal reaction, so as to obtain a Ce / Ti-UiO-66 solid; and (3) carrying out ultrasonic treatment on a certain amount of 2-aminoterephthalic acid and the Ce / Ti-UiO-66 solid in a methanol solution to obtain a Ce / Ti-UiO-66-NH2 solid. According to the method, simple and convenient synthesis of mesoporous Ce-UiO-66 can be achieved, the problem that in the prior art, a mesoporous Ce-UiO-66 synthesis method is difficult is solved, the metal titanium ion-doped and amino-loaded Ce / Ti-UiO-66-NH2 mesoporous material is prepared, and meanwhile, a new material is provided for the fields of photocatalysis and the like.

The utility model relates to the technical field of sodium chlorate production, and discloses an electrolyte circulation adjusting device for sodium chlorate production, which comprises a bottom plate, the top of the bottom plate is fixedly connected with an operation box, the rear side of the operation box is fixedly connected with a filter assembly for cleaning, the top of the operation box is fixedly connected with a motor, and the motor is fixedly connected with a motor. The driving end of the motor is fixedly connected with a sector gear, the operation box is rotationally connected with a circular gear, the exterior of the circular gear is in meshed connection with the exterior of the sector gear, the interior of the circular gear is fixedly connected with a rotating column, and the exterior of the rotating column is fixedly connected with a rotating disc. Two containing barrels are fixedly connected to the interior of the rotating disc, and a fixing frame is fixedly connected to the top of the operation box. According to the utility model, the production quality and stability of sodium chlorate can be improved, and the product quality problem caused by material quantity fluctuation can be reduced.

The invention discloses a sodium-based ion eutectic solid electrolyte and an application thereof in a high-performance sodium metal battery, and belongs to the field of electrochemical energy storage. The electrolyte is formed by cocrystallizing sodium perchlorate and succinonitrile according to a molar ratio of 1: (2.6-3.2); an ordered-disordered coexisting crystal structure is constructed on the molecular scale: Na < + > and part of SN molecules and ClO4 <-> respectively occupy regular coordination skeleton sites, and extra SN molecules fill lattice gaps in an orientation disordered manner, so that a continuous three-dimensional sodium ion transmission channel is established, and anions are effectively fixed; naClO4 (SN) x can be subjected to in-situ fusion-infiltration-resolidification after the battery is assembled, electrode pores and interface gaps are fully filled, interface impedance is reduced, collaborative optimization of ion migration efficiency and interface compatibility is realized through eutectic structure design and an in-situ fusion process, and the performance of the battery is improved. The invention provides a solid electrolyte solution for safe and efficient operation of the sodium metal battery, and has a wide application prospect.

The invention discloses a method and a system suitable for producing sodium perchlorate in a high-altitude low-pressure low-oxygen environment, which can adapt to different low-pressure low-oxygen environments through three-stage ceramic membrane gradient filtration and electrolytic pressure enhanced oxygen supply without additional auxiliary equipment, and realize the purposes that the yield is greater than or equal to 85%, the product purity is greater than or equal to 99.6%, the chloride content is less than or equal to 0.12%, and the product purity is greater than or equal to 99.6%. The core defects that in the prior art, the high-altitude yield is low, impurity removal is not thorough, and adaptability is poor are effectively overcome. Salt lake potassium and lithium extraction waste tail salt is used as a main raw material, salty mud is recycled to be used as a building material, the mother liquor recycling rate is larger than or equal to 96%, no solid waste or waste water is discharged, tail gas reaches the standard, and the green development requirement is met. And the equipment investment is reduced by 13-15%, the annual maintenance cost is reduced by 29-36%, the energy consumption per ton of products is reduced to 820-845 kWh, and the economical efficiency is outstanding. Core equipment is mature, parameters can be adjusted along with the altitude through a built-in database, high-altitude low-maintenance scenes can be adapted, large-scale production can be achieved, product indexes are superior to industrial standards, and market competitiveness is high.

This invention discloses a qualitative and quantitative analysis method for heparin-like components in the biopharmaceutical field. The method includes using a liquid chromatograph, an SAX strong anion exchange column, sodium dihydrogen phosphate solution as mobile phase A, and mobile phase B consisting of mobile phase A containing sodium perchlorate, with gradient elution for monitoring and analysis. This invention improves the separation of heparin-like components by screening chromatographic packing materials, optimizing the chromatographic method, and optimizing the detection wavelength. It allows for accurate qualitative analysis of up to five heparin components using a simple liquid chromatography method. Furthermore, this invention incorporates the simulated separation function of the Glycomapping glycosylation software to reconstruct the elution peaks of components that do not reach baseline separation, and then achieves quantitative analysis of each separated component based on the external standard method. This qualitative and quantitative analysis method provides a feasible solution for component identification and content determination in heparin-like samples, and offers an important means for heparin quality control.

The application belongs to the technical field of sodium ion batteries, and particularly relates to a sodium salt composition, a sodium ion battery electrolyte and application thereof, and a sodium ion battery. The sodium salt composition provided by the application comprises any five or more of sodium bistrifluoromethylsulfonimide, sodium hexafluorophosphate, sodium difluoro(oxalato)borate, sodium fluoroborate, sodium nitrate, sodium perchlorate and sodium difluorophosphate. The solvation configuration of the sodium ion battery electrolyte prepared by using the sodium salt composition is an aggregate with a multi-polar solvation shell, can form an inorganic matter-rich positive electrode surface solid electrolyte interface film (CEI) and a negative electrode surface solid electrolyte interface film (SEI), effectively protects the positive electrode and the negative electrode, and improves the cycle stability and rate performance of the sodium ion battery.

This invention discloses a novel method for detecting isomer impurities in dopamine agonists. The method employs high-performance liquid chromatography (HPLC), using a cyclodextrin-packed column, with sodium perchlorate buffer as mobile phase A and acetonitrile as mobile phase B. The test solution is injected into the HPLC system for isocratic elution. This invention overcomes the technical bias of requiring forward chromatography for isomer detection and separation, creatively exploring a method for analyzing and detecting isomer impurities in pramipexole hydrochloride tablets using reverse chromatography. The method offers advantages such as high specificity, high accuracy, good durability, and low reagent hazard, effectively filling a gap in the quality standards for pramipexole hydrochloride tablets. It provides a technical reference for the quality control of pramipexole hydrochloride tablets, ensuring medication safety.

The present application relates to the technical field of hazardous waste treatment, and more particularly to a safe treatment method of discarded perchloric acid, comprising the following steps: step one, taking a certain amount of water, slowly adding perchloric acid to it to obtain pretreatment liquid A, reducing the danger and oxidizing property of the pretreated perchloric acid; step two, slowly adding sodium hydroxide solution to the pretreatment liquid A to neutralize the perchloric acid, so that sodium perchlorate is generated, obtaining mixed liquid B, and reducing the danger of high corrosiveness of the perchloric acid. In the present application, a safe treatment method of discarded perchloric acid is provided, which is a safe and stable treatment method for discarded perchloric acid. By controlling the reagent of the reaction system, the safe treatment of perchloric acid is realized through a multi-stage reaction process. The three wastes of the system are effectively collected and treated throughout the reaction process, so as to achieve a treatment method for safely operating the environment when disposing of perchloric acid.

The invention provides a water-based sodium-ion battery electrolyte and a preparation method and application thereof, and relates to the technical field of batteries, the electrolyte is composed of sodium perchlorate, water and an ether solvent, and has the characteristics of safety and non-combustibility. By accurately controlling the number and the state of water molecules in the electrolyte, most of the water molecules are bound in solvation sheaths of sodium ions, so that the number of free water molecules is reduced, and the phenomena of negative electrode hydrogen evolution and positive electrode active material degradation are effectively inhibited. In addition, the ether solvent can be decomposed on the positive electrode side in the first charging process to form a solid electrolyte layer, so that the influence of water molecules on the positive electrode active material is further inhibited. Based on the electrolyte provided by the invention, the aqueous sodium ion battery taking Na2FeFe (CN) 6 as a positive electrode and NaTi2 (PO4) 3 as a negative electrode shows excellent long cycle performance. The electrolyte is simple and convenient in preparation method, high in safety, low in cost and excellent in performance, and has important application value.

This invention discloses a wide-temperature-range, long-life sodium-ion battery electrolyte, its preparation method, and its applications. The invention uses sodium perchlorate as the sodium salt, synergistically with low-viscosity, low-melting-point methyl acetate to ensure high ionic conductivity of the electrolyte over a wide temperature range. Simultaneously, dimethyl sulfite and fluoroethylene carbonate synergistically construct an inorganic-rich SEI film, significantly improving interfacial stability and cycle performance. The Na||NVP battery, after reversible charge-discharge at 60°C, maintained a discharge specific capacity retention of 88.33% of the initial capacity after 400 stable cycles. Under low-temperature conditions, reversible charge-discharge at currents of 0.1C and 0.3C resulted in stable cycles of 300 and 380 cycles, respectively. The preparation method of this invention is simple, low-cost, easy to implement, requires minimal equipment investment, and is suitable for mass production.

The application discloses a kind of porous composite polymer solid electrolyte and preparation method and solid sodium ion battery thereof.The porous composite polymer solid electrolyte of the application is made of deep eutectic solvent, additive, polymer solution and sodium superionic conductor;The deep eutectic solvent is composed of sodium ion-containing hydrogen bond acceptor and hydrogen bond donor, the sodium ion-containing hydrogen bond acceptor is selected from any one of sodium hexafluorophosphate, sodium tetrafluoroborate, sodium dihydrogen phosphate, sodium difluoro oxalate borate, sodium bis-trifluoromethyl sulfonamide, sodium bisfluorosulfonamide, sodium perchlorate, sodium nitrate, sodium chloride and sodium difluorophosphate;The additive is ethylene carbonate and propylene carbonate;The polymer solution is composed of polymer and organic solvent;The mass ratio of sodium superionic conductor and polymer is 1: (2-5).The porous composite polymer solid electrolyte of the application has excellent ion conductivity, flame retardancy, strong mechanical properties and excellent safety.

The invention discloses a method for measuring residual quantity of residual impurities DMAP and EDU in synthesis of antitumor drugs, and belongs to the technical field of drug analysis. According to the method, high performance liquid chromatography is adopted for detection; dimethyl sulfoxide is used as a solvent to dissolve the sample for detection; detection conditions of the high performance liquid chromatography are as follows: a chromatographic column is an octadecyl bonded silica gel column; the mobile phase A is a sodium perchlorate buffer solution or a potassium hexafluorophosphate buffer solution; the mobile phase B is acetonitrile; the detector is an ultraviolet detector; the detection wavelength for detecting the DMAP is 278 to 282 nm, and the detection wavelength for detecting the EDU is 198 to 202 nm; a gradient elution mode is adopted. The method is used for detecting DMAP and EDU residues in the raw material medicine, is high in sensitivity and accuracy, does not need a special column, can meet the control limit of the ICH guidance principle on genotoxic impurities and general impurities of the raw material medicine, provides reliable guarantee for impurity control of the raw material medicine, and further guarantees the safety of clinical medication.

The invention relates to the field of sodium ion batteries, and discloses an electrolyte and a sodium ion battery. The electrolyte comprises a sodium salt, an organic solvent, a fluorine-containing additive and an optional flame retardant; wherein the sodium salt comprises main sodium salt and auxiliary sodium salt; the main sodium salt is sodium hexafluorophosphate and / or sodium perchlorate; the auxiliary sodium salt is selected from at least one of sodium difluoro (oxalato) borate, sodium bis (trifluoromethylsulfonyl) imide, sodium bis (fluorosulfonyl) imide, sodium tetrafluoroborate, sodium trifluoromethanesulfonate, sodium carbonate, sodium fluoride, sodium difluorophosphate and sodium bis (oxalato) borate; in the electrolyte, the molar ratio of the auxiliary sodium salt in terms of sodium element to the main sodium salt in terms of sodium element is 1: (2-20). According to the electrolyte, the main sodium salt and the auxiliary sodium salt are matched with the fluorine-containing additive, so that the first coulombic efficiency, the normal-temperature cycle retention rate and the cycle retention rate at the temperature of 45 DEG C of the prepared battery are remarkably improved.

The invention discloses an electrolyte for a NaNixFeyMnzO2 sodium ion battery. The electrolyte comprises the following components: an organic solvent, a sodium salt and a Fe < 3 + > inhibition type additive, the organic solvent is composed of two or three of cyclic carbonate, chain carbonate and chain ether; the sodium salt is one or more of sodium hexafluorophosphate, sodium perchlorate and sodium tetrafluoroborate; and the Fe < 3 + > inhibition type additive is one or two of total thia-15-crown-5 and nitrogen-containing benzene-15-crown-5. The invention further discloses a preparation method of the catalyst. According to the invention, by introducing total thia-15-crown-5 or / and nitrogenous benzo-15-crown-5 as the Fe < 3 + > inhibition type additive, the high-temperature performance of the NaNixFeyMnzO2 sodium ion battery can be remarkably improved from the following three aspects: the high-temperature cycle life is remarkably prolonged, the cycle index is improved from 250-350 times of the existing system to 600-700 times when the battery discharge retention rate is reduced to 80% at 60 DEG C and 1C charge-discharge rate, and the battery performance is greatly improved. The cycling stability is improved by 1.2 to 1.8 times; in the storage process, the amount of gas (CO2 and CH4) generated by electrolyte decomposition is reduced by 70%.

This invention discloses a hierarchical porous HKUST-1 material for efficient iodine capture and its hydrothermal synthesis method. The synthesis process involves sequentially dissolving a template agent, carboxylic acid, and sodium perchlorate in water, then adding a copper source and an organic ligand. The mixture is reacted at 90°C for 24 hours. After the reaction, the solid is separated by centrifugation, the template agent is removed by Soxhlet extraction, and the material is dried to obtain the hierarchical porous HKUST-1 material. The hierarchical porous HKUST-1 material synthesized by this invention has ordered mesopores with a size of 8-20 nm, which promotes rapid iodine transfer within the material and provides more storage space, thereby achieving efficient iodine capture.

The invention discloses a closed-loop circulation system for centrifugal mother liquor in a perchlorate production process. The closed-loop circulation system comprises a crystallizer, a centrifugal head tank, a centrifugal machine, a mother liquor intermediate tank, a cyclone hydraulic separator, a mother liquor storage tank, a mother liquor mixing tank and a plurality of material conveying pipelines. Crystal mush discharged from the crystallizer sequentially enters the centrifugal head tank and the centrifugal machine to realize solid-liquid separation, mother liquor discharged from a liquid phase of the centrifugal machine is temporarily stored in the mother liquor middle tank and then is subjected to secondary solid-liquid separation by the cyclone hydraulic separator, and clear liquor used for reflowing a front-end refining section and mixed liquor used for returning to a crystallization section are obtained. And the mixed liquid is mixed with sodium perchlorate electrolyte from an electrolysis section in the mother liquid mixing tank and then conveyed back to the crystallizer by a crystallizer feeding pump. By means of the structure, soluble sodium perchlorate can be recycled, insoluble impurities are discharged at the crystallization section, full-amount closed-loop circulation of centrifugal mother liquor is achieved, the impurities are prevented from entering a refining section, and the operation stability of the system is improved.

This invention relates to a method for detecting related substances in plexafor, comprising the following steps: detecting the content of related substances in plexafor using high-performance liquid chromatography (HPLC), wherein the HPLC test conditions are: a pentafluorophenyl column, using a 0.01-0.05 mol / L sodium perchlorate aqueous solution at pH 1.5-2 as mobile phase A, and acetonitrile as mobile phase B for gradient elution; the related substances in plexafor include impurities WI-1208, WI-1209, WI-1210, WI-1211, and WI-1549. This detection method can simultaneously detect multiple related substances in plexafor, with a resolution of over 1.5; and it does not use ion-pairing reagents as the mobile phase, reducing damage to the chromatographic column. This method, applied to the quality control of plexafor, can improve the quality control level of plexafor.

The invention discloses a wide-temperature-range sodium-ion battery electrolyte with a flame-retardant function as well as a preparation method and application of the wide-temperature-range sodium-ion battery electrolyte. Sodium perchlorate (NaClO4) serves as main sodium salt, sodium ions are provided, and the ionic conductivity is guaranteed; sodium difluoro (oxalato) borate and sodium bromide are used as a sodium salt combined additive, a stable interfacial film is formed at the positive electrode and the negative electrode, and the cycle life is prolonged. The NMLTO half cell is reversibly charged and discharged at the high temperature of 80 DEG C, and after 200 cycles of stable circulation, the specific discharge capacity retention rate is 75.7% of the initial capacity. Reversible charging and discharging are carried out under the low-temperature condition of-30 DEG C, and after 120 circles of stable circulation, the specific discharge capacity retention ratio is 98.4% of the initial capacity. And the electrolyte also has a good flame-retardant function. The preparation method is simple, low in cost, low in equipment investment and suitable for batch production.

The invention discloses a sodium-ion battery electrolyte, a preparation method thereof and a sodium-ion battery. The electrolyte comprises a solvent including a strong solvent and a weak solvent, the strong solvent is selected from one or two of trimethyl phosphate, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether and tetrahydrofuran, and the weak solvent is selected from one or two of 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether, bis (2, 2, 2-trifluoroethyl) ether and diethyl carbonate; the solute is dissolved in the solvent and comprises a first solute and a second solute, the first solute comprises at least one of sodium hexafluorophosphate, sodium perchlorate and sodium bis (fluorosulfonyl) imide, the second solute comprises at least one of sodium nitrate, sodium difluoro (oxalato) borate and sodium tetrafluoroborate, the concentration of the first solute is 1.0-2.0 mol / L, and the concentration of the second solute is 0.01-0.1 mol / L. According to the sodium ion battery prepared from the electrolyte provided by the invention, side reaction between an electrode and the electrolyte is prevented, and continuous consumption of the electrolyte and thickening of a CEI layer are prevented, so that the electrode structure is stabilized.

This invention belongs to the field of chemical pharmaceutical analysis technology, specifically relating to a method for detecting the content of polysulfated mucopolysaccharides based on high-performance liquid chromatography (HPLC). The invention utilizes HPLC to detect the content of polysulfated mucopolysaccharides in a sample, specifically: using an anion exchange column as the chromatographic column and an anion guard column as the guard column, gradient elution is performed using phosphate solution as mobile phase A and a mixed solution of sodium dihydrogen phosphate, sodium perchlorate, and water as mobile phase B. Detection is then performed using a detector with a detection wavelength of 210 nm to obtain a chromatogram. Finally, the polysulfated mucopolysaccharide content is calculated using the area normalization method. This method features high specificity, high sensitivity, and short analysis time, and is of great significance for the quality control of polysulfated mucopolysaccharide products.

The invention relates to a preparation method of a sodium polyurethane solid electrolyte based on bifunctional MOF and dynamic disulfide bonds. A continuous ion transmission channel is constructed through the synergistic effect of a three-dimensional frame structure and bifunctional groups of the bifunctional hybridized nitrogen metal organic frame material, and the ionic conductivity is improved in cooperation with the movement capacity of a polyurethane chain segment; meanwhile, by virtue of a compact hydrogen bond network formed by amino, fluorine atoms and a polyurethane chain segment, the interface stability and the mechanical property are enhanced, a high-temperature self-repairing function is realized in combination with a dynamic disulfide bond, the cycle life of the battery is remarkably prolonged, and the safety performance of the battery is remarkably improved. The preparation method comprises the following steps: synthesizing bifunctional hybridized nitrogen azole metal organic framework materials AHF-NH2 and AHF-NH2-F with a three-dimensional framework structure through a solvothermal method, and carrying out a reaction on a pretreated MOF material, polydimethylsiloxane, 1, 6-hexamethylene diisocyanate, 4, 4 '-difluoro-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- and carrying out polymerization reaction on 2, 4-diaminodiphenyl disulfide and sodium perchlorate to prepare the hybrid azole crystalline framework modified polyurethane solid electrolyte.

This invention discloses a method for detecting related substances in mometasone furoate nasal spray. The method uses an octadecylsilane-bonded silica column, with 0.02 mol / L sodium perchlorate as mobile phase A and acetonitrile as mobile phase B, employing gradient elution at a flow rate of 0.8–1.2 mL / min. The detection wavelength is 240 nm–260 nm, the column temperature is 30–50 °C, and the injection volume is 10–25 μL. The sum of the volume fractions of mobile phase A and mobile phase B is 100, and at elution min 0, the volume fraction of mobile phase A is 57–59. This method can simultaneously detect unknown photodegradation impurities, the excipient peak position is flat and does not affect impurity quantification, preservatives are completely eluted, and the method exhibits good precision and robustness. It also improves detection sensitivity, shortens detection time, and is simple to operate, highly specific, and resistant to interference.

The invention provides a method for detecting related substances of a tiloprobiotic hydrochloride raw material medicine, and discloses a method for detecting the tiloprobiotic hydrochloride raw material medicine and impurities of the tiloprobiotic hydrochloride raw material medicine by adopting a high-performance liquid chromatography. The invention further discloses a method for detecting the related substances of the tiloprobiotic hydrochloride raw material medicine and the impurities of the tiloprobiotic hydrochloride raw material medicine. According to the method, a chromatographic column is used as a silica gel bonded octadecylsilane column, a 0.05 mol / L sodium perchlorate buffer solution (pH 2.5)-acetonitrile = 7: 3) is used as a mobile phase A, methanol-water = 9: 1 is used as a mobile phase B, and separation and detection are performed in a gradient elution mode. According to the method for detecting related substances of the tiloprobiotic hydrochloride bulk drug, eight impurities in the bulk drug can be detected at a time, the specificity is high, the separation degree is good, and the sensitivity is high.

The invention relates to a method for increasing the granularity of sodium perchlorate crystals, and belongs to the technical field of industrial crystallization. The invention mainly solves the technical problems of small particle size and easy hardening in the existing sodium perchlorate production process. According to the technical scheme, the method for increasing the particle size of the sodium perchlorate crystal comprises the following steps: 1) preparing a sodium perchlorate concentrated solution: dissolving a sodium perchlorate crude product in water, and concentrating the sodium perchlorate solution; 2) determining the addition amount of the seed crystal: calculating the addition amount of the seed crystal according to a formula Ms = (Ls / Lf) 3Mf; and 3) cooling crystallization: filtering the sodium perchlorate concentrated solution in the step 1) into a cooling storage tank, after the temperature of the sodium perchlorate concentrated solution is reduced to 73-95 DEG C, putting the sodium perchlorate concentrated solution into a DTB crystallizer, then adding a seed crystal, and after the temperature is reduced to 25-40 DEG C, centrifuging the solution. The method has the advantages of simplicity in operation, large and uniform crystal granularity, difficulty in hardening of products and the like.