708 results about "Hydrogen ion" patented technology

The invention belongs to the field of medical radioactive isotope preparation, and particularly relates to a method for extracting lead-212 and bismuth-212 from a thorium-232 decay chain, a solution containing a thorium-232 decay chain substance passes through an anion exchange resin column, the solution containing the thorium-232 decay chain substance contains halide ions, and the anion exchange resin column is used for extracting the lead-212 and the bismuth-212 from the thorium-232 decay chain substance. The concentration of hydrogen ions in the solution containing the thorium-232 decay chain substance is greater than 0.01 mol / L, the lead-212 and the bismuth-212 are adsorbed by the anion exchange resin column, other nuclides directly penetrate through the anion exchange resin column and are not adsorbed, a leaching reagent is introduced to desorb the lead-212 and the bismuth-212 from the anion exchange resin column, and the lead-212 and the bismuth-212 are separated and extracted; the method can be used for simultaneously extracting lead-212 and bismuth-212, has the advantages of high extraction speed and high purity, and is not easy to cause organic pollution to products.

The invention provides an electrolytic hydrogen production device and an operation method thereof. The electrolytic hydrogen production device comprises a proton exchange membrane flow battery, a first proton exchange membrane electrolytic bath, a second proton exchange membrane electrolytic bath, a positive electrode electrolyte water tank, a negative electrode electrolyte water tank, a methanol storage tank and a control switching device, the proton exchange membrane flow battery is used for performing reversible redox reaction on the positive electrode electrolyte and the negative electrode electrolyte to realize charging and discharging; an anode chamber of the first proton exchange membrane electrolytic cell is used for carrying out oxidation reaction on methanol to obtain methyl formate and hydrogen ions; a cathode chamber of the second proton exchange membrane electrolytic cell is used for reducing hydrogen ions to obtain hydrogen; the positive electrode electrolyte water tank is used for carrying out oxidation-reduction reaction on the positive electrode electrolyte and realizing circulation; the negative electrode electrolyte water tank is used for carrying out oxidation-reduction reaction on the negative electrode electrolyte and realizing circulation; the control switching device is used for controlling the operation mode of the device. The device is high in safety and volatility absorption capacity and large in energy storage capacity.

The invention discloses forest steppe fire extinguishing barrier foam and a preparation method thereof.The foam is prepared from 5%-20% of a material A, 0.5%-0.8% of a material B, 1.8%-3% of a coagulant and the balance water through a foam generation system; the material A is prepared from 1 to 10 parts of organic aggregate and 100 to 200 parts of inorganic aggregate; the material B is composed of 2-7 parts of a composite surfactant and 1-6 parts of a cross-linking agent; the coagulant is carbon dioxide gas. The inorganic aggregate is condensed under the action of hydrogen ions generated by dissolution of carbon dioxide to form colloidal particles, the colloidal particles are polymerized and crosslinked with the organic aggregate to form a gel skeleton of a three-dimensional network structure, the foam is converted into gel foam, and a heat-insulating and anti-burning barrier layer is formed on the surface of a combustible. The fire extinguishing agent is high in fire extinguishing efficiency, good in heat insulation effect and environment-friendly, and has wide application prospects in forest and grassland fire disasters.

The invention relates to a K / O co-doped and cyano-grafted graphite phase carbon nitride material as well as a preparation method and application thereof. The material comprises three defect types, namely a C-O-C bond formed by a C-N = C bond in an oxygen substituted triazine skeleton, potassium ions existing between layers and cyano groups generated by protonation of amino groups at the edge. According to the material disclosed by the invention, K ions are doped into the g-C3N4 layer to form K-N bridge connection between layers, the material can be used as an electron channel to effectively accelerate electron migration, cyano groups at the edge have relatively strong electron-withdrawing capability and can be used as sites for adsorbing hydrogen ions, and introduced oxygen can be used as active sites for producing H2O2. The three components cooperate with each other to effectively promote transmission of photo-induced electrons and separation of photo-induced electron hole pairs, so that the photocatalytic effect is remarkably improved, and the photocatalyst is an efficient photocatalyst with excellent performance.

The invention provides a stable perovskite precursor solution and a preparation method and application thereof. The perovskite precursor solution comprises a solute, a solvent and a stabilizer; the stabilizer comprises a compound containing a reducing group and a hydrogen ion group capable of being ionized; the solute comprises bromomethylamine, formamidine iodide, chloromethylamine, cesium iodide, lead iodide and lead bromide. The preparation method comprises the following steps: mixing a solute and a solvent, adding a stabilizer into the mixture, and mixing to obtain the perovskite precursor solution. According to the invention, the specific composition of the perovskite precursor solution is designed, and a specific stabilizer is further used, so that the perovskite precursor solution with relatively high stability and a relatively good storage effect is prepared.

The invention relates to a low-cost high-stability urease inhibitor and a preparation method and application thereof.The preparation method includes the steps that montmorillonite is modified with inorganic acid to obtain inorganic acid modified montmorillonite, then hydrogen ions in the inorganic acid modified montmorillonite are exchanged with a cationic surface active agent to obtain quaternary ammonium salt surface active agent modified organic montmorillonite, and the quaternary ammonium salt surface active agent modified organic montmorillonite is used for preparing the urease inhibitor. After montmorillonite is subjected to organic modification, the hydrophobicity is greatly improved, and the organic modified montmorillonite has hydrophilicity and hydrophobicity. The organic modified montmorillonite interacts with amino acid residues in a urease flap region due to the hydrophobic effect, so that the amino acid residues are gathered in the organic modified montmorillonite due to the hydrophobic effect, urease conformational change is caused, catalytic activity on urea is lost, and the organic modified montmorillonite has a remarkable urease inhibition effect, is stable in chemical property and non-toxic in material, and can be used for preparing a novel urease inhibitor. The fertilizer is easy to disperse in fertilizer and soil and low in price.

The invention relates to the technical field of flow batteries, in particular to a bromine-chromium flow battery electrolyte and a flow battery. The electrolyte is composed of a basic electrolyte and an additive; the additive is an iodine elementary substance or an iodine-containing compound; the basic electrolyte comprises bromide ions, chromium ions and hydrogen ions; the molar concentration ratio of iodine to bromide ions in the electrolyte is (1: 8)-(1: 4), one or two of iodine elementary substances or iodide ions are used as additives, the bromide ions and the iodine elementary substances are complexed in the charging process to form I2nBr <-> to exist in the electrolyte, then the I2nBr <-> generates the bromine elementary substances through an electrochemical reaction, and the electrochemical reaction electrode potential (Egt) of I2nBr <->-Br2; the electrode potential (E = 1.0873 V vs.SHE) is higher than the electrode potential (E = 1.0873 V vs.SHE) of Br <->-> Br2, so that the energy density of the bromine-chromium flow battery is improved.

The invention relates to a novel composite bipolar membrane for preparing low-carbon alcohol alkali metal salt and an electrodialysis process of the novel composite bipolar membrane, and belongs to the technical field of membrane separation and electrochemical synthesis. The composite bipolar membrane comprises a cation exchange layer, a middle catalyst layer and an anion exchange layer which are sequentially laminated and compounded, the process comprises the following steps: introducing a salt solution containing alkali metal ions into an anode chamber of a bipolar membrane electrodialysis system, and introducing a low-carbon alcohol solution into a cathode chamber; applying a direct-current electric field to the two sides of the composite bipolar membrane, so that the low-carbon alcohol is dissociated at the membrane interface to generate alkoxy ions and hydrogen ions; the alkoxy ions migrate to an anode chamber to be combined with the alkali metal ions to generate low-carbon alcohol alkali metal salt; the membrane material is high in adaptability, the membrane structure is good in stability, technological parameters are mature, and the system integration degree is high.

The invention provides a microporous cathode electrochemical induced crystallization precipitation system and application thereof.The system comprises an anode chamber and a cathode chamber, an anode plate is a Ru / Ir mesh electrode, and a cathode plate is a stainless steel mesh cathode with the high mesh number of 100-300 meshs.According to the microporous cathode electrochemical induced crystallization precipitation system, the mesh cathode with the high mesh number is used for replacing a traditional anion exchange membrane; the high-mesh-number net-shaped cathode prevents hydrogen ions generated by the anode from migrating to the cathode chamber, the high-pH environment of the cathode chamber is guaranteed, the pH of the cathode chamber reaches up to 10.90, the phosphorus recovery efficiency reaches 93.14%, meanwhile, the cost is greatly reduced and is only 1.25% of that of an ion exchange membrane, needle-shaped nano-hydroxyapatite serves as an additional seed crystal, the needle-shaped nano-hydroxyapatite (ANHD) is put into the cathode chamber, and the yield of phosphorus is greatly increased. The seed crystal effect of ANHD is fully exerted, and the recovery efficiency of orthophosphorus is improved by 24.40%.

The invention provides a solar cell half-piece passivation coating method and a solar cell, a material box comprises a cover plate, a bottom plate and a side plate, the material of the cover plate and the bottom plate comprises a conductive material, the material of the side plate comprises an insulating material, a plurality of stacked cell pieces are arranged in the material box, at least one cell piece is in contact with the cover plate, and at least one cell piece is in contact with the insulating material. At least one battery piece is in contact with the bottom plate, the hydrogen passivation cavity comprises a heating cavity, a process cavity and a discharging cavity which are sequentially communicated, and the method comprises the steps that a material box is conveyed to the heating cavity, so that the heating cavity heats the material box; and the heated material box is conveyed to a process cavity, ATM gas is introduced into the process cavity so as to conduct film coating on the cutting faces of the multiple battery pieces, and in the film coating process of the multiple cutting faces, voltage is provided for the cover plate and the bottom plate so as to activate hydrogen ions in the multiple battery pieces. The problem that in the prior art, the passivation efficiency is low due to the fact that the passivation process duration of the half battery piece is long is solved.

The invention discloses an unattended hydrogen ion battery charging station, and relates to the technical field of energy management, and the unattended hydrogen ion battery charging station comprises the steps: monitoring battery state parameters and environmental conditions through a sensor, and collecting multi-dimensional data; transmitting the multi-dimensional data to an automatic operation platform for cleaning and feature extraction, and training an adaptive learning model; determining a charging strategy by applying an optimization algorithm according to the charging demand prediction result; the charging strategy is converted into a control instruction to be sent to a controller in the automatic operation platform, and the controller adjusts the working mode of the charging equipment after receiving the instruction; the running state of the battery is detected in real time, and when a potential fault is detected, an early warning mechanism is triggered; according to the method, the optimal charging strategy is determined through the differential evolution algorithm, multiple factors such as the charging demand intensity, the power level and the battery health are comprehensively considered, the global optimal solution is quickly found, the charging efficiency and the resource utilization rate are improved, and the operation cost is reduced.

The invention relates to the technical field of batteries, in particular to an all-vanadium redox flow battery SOC dual monitoring correction method and system. The method comprises the following steps: acquiring first SOC data through potential monitoring, wherein the first SOC data comprises a positive charge-discharge state SOC positive, n and a negative charge-discharge state SOC negative, n; second SOC data including SOC positive ', n and SOC negative', n are obtained through electrolyte valence state concentration monitoring; calculating correction coefficients kappa positive and kappa negative according to the first SOC data and the second SOC data; and finally, correcting the third SOC data by using the correction coefficient to obtain an actual SOC value. According to the method, a dual monitoring mode is adopted, the real-time online characteristic of potential monitoring is utilized, the high-precision advantage of electrolyte concentration monitoring is combined, the two monitoring methods are organically combined through a correction coefficient, and the problems that single potential monitoring is affected by hydrogen ion concentration and the electrolyte concentration monitoring cannot realize real-time online monitoring are solved. According to the method, the correction frequency of 0-10 days is designed, the correction timeliness and sampling interference are reasonably balanced, and the accuracy of SOC monitoring is improved.

To provide a hydrogen ion conductive multi-layer composite membrane having excellent durability, ion conductivity, and hydrogen permeation reduction effect.SOLUTION: The present invention provides a hydrogen ion conductive multilayer composite membrane comprising: inner reinforced membranes comprising a porous PTFE layer impregnated with an ionomer composition and outer reinforced membranes positioned on both sides of the inner reinforced membrane, wherein the outer reinforced membranes comprise a porous PTFE layer impregnated with an ionomer composition.SELECTED DRAWING: Figure 1

The invention provides a self-powered flexible humidity sensor and a preparation method and application thereof, and belongs to the field of sensors. The invention provides a self-powered flexible humidity sensor which comprises a flexible substrate, a bottom electrode, a porous composite functional layer and a top electrode which are sequentially stacked, and the porous composite functional layer comprises polyvinyl alcohol (PVA), potassium hydroxide (KOH) and graphene oxide (GO). According to the invention, PVA and GO are used for absorbing water to ionize hydrogen ions, and migration of the hydrogen ions is used for generating voltage, so that rapid adsorption and desorption of water molecules are realized, and self-powered humidity sensing is realized. Water information in the environment is converted into electric energy, monitoring of the water information is achieved, power consumption is effectively reduced, a sensing circuit is simplified, and a direction is provided for portable, miniature and integrated development of the sensor, that is, the sensor prepared by the invention can work without external power supply, and generated voltage can be used by an external circuit, so that the cost is reduced. Energy is saved, and the environment is protected.

The invention discloses a derivatization device and a derivatization method for on-line production of a derivatization reagent, the device comprises a chemical column suppressor, a reaction reagent, a six-way valve, a derivatization reactor, a pump system and a flow path system, and the chemical column suppressor, the reaction reagent, the six-way valve and the derivatization reactor are connected through the flow path system; the six-way valve is provided with a regeneration flow path, a cleaning flow path and a generation flow path, and the three suppression columns of the chemical column suppressor are respectively connected with the regeneration flow path, the cleaning flow path and the generation flow path in turn; the three suppression columns of the chemical column suppressor respectively and sequentially displace hydrogen ions in the regeneration flow path, clean in the cleaning flow path and react in the generation flow path to generate hydriodic acid. By adopting the chemical column suppressor with the three suppression columns, derivative reagents can be continuously generated, and the generation efficiency of the derivative reagents is improved.

The invention discloses a preparation method of hydrated hydrogen ions. The preparation method comprises the following steps: S1, adding inorganic acid and calcium oxide into treatment equipment in proportion, and mixing and stirring; s2, adding polymerized aluminum oxide into the mixed solution obtained in the step S1, and stirring; s3, adding polyacrylamide into the mixed solution obtained in the step S2, and stirring; s4, the mixed solution obtained in the step S3 is separated through treatment equipment, supernate is taken out, the obtained supernate is the hydrated hydrogen ion solution, and the inorganic acid in the step S1 is sulfuric acid. Through precipitation and centrifugation technologies, the production efficiency is greatly improved, the production cost is reduced, and the produced hydrated hydrogen ions have extremely strong bactericidal ability, and can be widely applied to the food industry, the slaughter industry and the disinfectant industry as a super-strong bactericidal substance.

The invention relates to a preparation method of a photovoltaic cell and the photovoltaic cell, and the preparation method comprises the steps: preparing a substrate which comprises a first surface and a second surface which are opposite to each other, and the first surface is of a textured structure; placing the substrate into an ALD (atomic layer deposition) chamber; sequentially depositing an aluminum-silicon layer and an aluminum oxide layer on the first surface; putting the substrate with the aluminum-silicon layer and the aluminum oxide layer into a PECVD (Plasma Enhanced Chemical Vapor Deposition) deposition chamber; depositing a silicon nitride layer on the aluminum oxide layer; introducing ammonia gas into the PECVD deposition chamber, starting a radio frequency power supply, and ionizing hydrogen ions in the ammonia gas; and diffusing the hydrogen ions to the aluminum-silicon layer. The aluminum-silicon layer forms an aluminum-silicon bond on the first surface of the substrate, hydrogen ions are diffused to the aluminum-silicon layer to form an aluminum-hydrogen bond, when ultraviolet light irradiates the surface of the photovoltaic cell, the aluminum-hydrogen bond can reduce the possibility that the silicon-hydrogen bond on the surface of the silicon layer is damaged by the ultraviolet light, the chemical passivation loss of the photovoltaic cell is reduced, and then the conversion efficiency is improved.

The invention discloses a method for determining the content of hydrogen ions in a chloroplatinic acid solution, and belongs to the technical field of analytical testing. In order to solve the problems that the chloroplatinic acid solution is yellow after being diluted and the manual titration end point is difficult to judge, a potentiometric titration method is adopted, and the end point is determined by measuring electrode potential mutation without depending on indicator color change. The method comprises the steps of test condition preparation, burette calibration, standard solution preparation and calibration, sample treatment and titration, result calculation and the like, a full-automatic potentiometric titrator is selected, the titration volume is controlled within the range of 10-15 mL, and a sodium hydroxide standard solution is used for sample titration after calibration. The relative standard deviation of the determination result is less than 0.5%, the adding standard recovery rate is between 96.3% and 103.1%, and the method has the characteristics of high analysis speed, high accuracy and good stability, is suitable for accurate detection of hydrogen ions in chloroplatinic acid production and quality inspection, and effectively solves the defects of the traditional method.

The invention discloses an enzymatic reaction monitoring method based on an optical bar code, and belongs to the technical field of optical fiber microcavity sensing and biological sensing. The inner surface of a microbubble cavity is coated with a polymer sensitive to pH, and when the polymer is exposed in a specific enzymatic reaction solution, the polymer can be combined with hydrogen ions generated after a reaction of a solution to be detected, so that the refractive index of the polymer is changed; then an optical bar code database is established, corresponding optical bar code information and the pH value are extracted from the database according to the detected enzymatic reaction spectrum, and pH value monitoring of the enzymatic reaction solution to be detected is completed. According to the method, the pH value of the specific acid solution can be conveniently and efficiently detected, and biological information such as the pH value can be intuitively monitored by utilizing an optical barcode technology in an echo wall mode. The method can extract additional information related to the biosensing process from the overall behavior of the WGM spectrum, and can be widely applied to the fields of biochemical reaction detection, environmental protection and the like.

An apparatus comprises: a focused ion beam (FIB) column within a vacuum chamber configured to direct ions comprising a mixture of protons and non-hydrogen ions onto a sample, wherein the kinetic energy of ions of the mixture is not greater than 50 kilo-electron-Volts (keV); and an X-ray detector configured to detect and measure X-rays that are emitted from the sample in response to the impingement of the protons and non-hydrogen ions onto the sample. The apparatus may further comprise an electron microscope column within the vacuum chamber configured to direct and focus a beam of electrons onto the sample and to detect secondary electrons or backscattered electrons that are emitted from the sample in response to the impingement of the beam of electrons onto the sample. The electron microscope may generate an image of a sample area that is milled by the FIB column.

The invention relates to the technical field of sodium ion battery negative electrode materials, and discloses an in-situ doped pre-oxidized heavy organic matter hard carbon preparation method which comprises the following steps: step 1, low-temperature oxidation: obtaining a pre-oxidized carbon material after heat treatment is finished; step 2, element doping: obtaining a hard carbon precursor doped with a sulfur element; step 3, low-temperature curing: obtaining a cured sulfur element doped pre-oxidized heavy organic matter hard carbon precursor; step 4, high-temperature carbonization: obtaining a sulfur element doped pre-oxidized heavy organic matter hard carbon precursor material with a stable structure; the medium-temperature coal pitch is oxidized at low temperature to obtain the pre-oxidized carbon material, then the sulfur element doped material reacts with the medium-temperature coal pitch at low temperature, hydrogen ions of the medium-temperature coal pitch are substituted by sulfur to form relatively stable chemical bonds, and the continuity of the chemical bonds is beneficial to enhancing the stability of the structure; sulfur atom doping not only provides active sites and increases sodium storage capacity, but also expands interlayer spacing and improves rate capability.

The embodiment of the invention relates to a method for initiating in-situ polymerization of an electrolyte solution through electrochemical induction. A solvent of the electrolyte solution comprises cyclic ether molecules and halogen atom substituted ethylene carbonate molecules; the method comprises the following steps: carrying out constant-current charging on a battery to a set voltage, and carrying out constant-voltage charging for a specific time under the set voltage, so that halogen atoms of halogen atom substituted ethylene carbonate molecules are removed under the reduction potential of the negative electrode side of the battery to generate free radical sites, two molecular structures after halogen atoms are removed are mutually combined through the free radical sites to form a dimer, the dimer is migrated to the positive electrode side in an electrolyte solution, dehydrogenation reaction is carried out under the action of oxidation potential applied to the positive electrode side, and in-situ ring-opening polymerization reaction of cyclic ether molecules is initiated through removed hydrogen ions; therefore, in-situ polymerization solidification of the electrolyte solution is realized under the condition that a conventional initiator is not contained.

The present application relates to the technical field of batteries, and particularly to a battery manufacturing process, a battery treatment device, a battery, and a power-consuming device. The battery manufacturing process comprises: obtaining a battery to be subjected to treatment, and subjecting the battery to electrolyte injection; and charging the battery before sodium in the battery is reduced at the negative electrode. In the present application, the battery is charged before sodium in the battery is reduced at the negative electrode; during the process of charging the battery, water can receive electrons at the negative electrode to undergo a reduction reaction so as to produce hydrogen and hydroxy radicals, or water is decomposed in the electrolyte to produce hydrogen ions, and the hydrogen ions can receive the electrons at the negative electrode to undergo a reduction reaction so as to produce hydrogen; in such a way, water in the battery can be removed; after the water removal, sodium is reduced at the negative electrode to produce an elementary sodium metal, thus reducing the risk of the reduced sodium reacting with water, reducing a loss of battery capacity, and improving the cycling performance of the battery.

The preparation method comprises the following steps: mixing and stirring polyvinyl alcohol and deionized water, cooling, adding glycerol and hyaluronic acid, stirring, adjusting the pH value to be acidic, cooling, adding a modified additive, stirring, injecting into a mold, repeatedly freezing and thawing, and carrying out vacuum drying to obtain the anti-wrinkle and anti-aging polymer hydrogel mask. In the using process of the hydrogel mask, when the internal modified additive makes contact with the skin surface, due to the weak acidity of the skin, an iron organic frame structure on the surface of the modified additive is attacked by hydrogen ions, coordinate bonds of the modified additive are damaged, and a skeleton is partially or completely dissociated; the active substances can be slowly released under the action of the modified additive, advanced oxidation caused by too fast release of the active substances is prevented, and the modified additive also contains a nano silicon dioxide structure, so that the mask has certain air permeability, the strength, elasticity and toughness of the mask are improved, and the mask cloth is prevented from being easily torn.

The invention relates to the technical field of sewage treatment, and discloses a combined treatment method of acid wastewater. The combined treatment method of the acid wastewater comprises the following steps: introducing the acid wastewater generated in an industrial process into an electrochemical device, loading a nonmetallic mineral material on an anode of the electrochemical device, and neutralizing the acid wastewater and extracting heavy metals through electrochemical treatment; the solution subjected to electrochemical treatment enters a sedimentation tank, carbon dioxide in the air is captured and fixed, and then the treated solution meeting the environmental quality standard for surface water is directly discharged. The acid wastewater treatment method is simple, efficient and easy to operate, meanwhile, heavy metal recovery is achieved, non-metallic minerals which are easy to obtain and environmentally friendly are introduced into the anode of the electrochemical device, hydrogen ions released in the electrolysis process are consumed, inhibition of the hydrogen ions on heavy metal deposition is reduced, and the extraction rate of the heavy metal in the wastewater is increased. And the solution subjected to electrochemical treatment is used for capturing and fixing the carbon dioxide, so that the treatment liquid is directly discharged.

The invention provides a method for determining the number of bacteria in cathode electrophoretic paint. The method comprises the steps that a relation model of the hydrogen ion concentration and the number of bacteria in the cathode electrophoretic paint is determined; the real-time pH value of the cathode electrophoretic paint is obtained; based on the real-time pH value, the real-time hydrogen ion concentration in the cathode electrophoretic paint is obtained; and determining the real-time bacterial quantity in the cathode electrophoretic paint based on the relation model and the real-time hydrogen ion concentration. According to the method for determining the number of the bacteria in the cathode electrophoretic paint, the real-time hydrogen ion concentration in the cathode electrophoretic paint is obtained by collecting the pH value data of the cathode electrophoretic paint in real time, and then the real-time number of the bacteria in the cathode electrophoretic paint is obtained according to the relation model of the hydrogen ion concentration and the number of the bacteria in the cathode electrophoretic paint. According to the method, the number of bacteria in the cathode electrophoretic paint can be obtained in time, the operation is simple, and the cost is relatively low.

The invention provides a method for detecting related substances of bromo-n-butane, which adopts a gas chromatography detection method, and the chromatographic conditions are as follows: a chromatographic column is a DB-624 quartz capillary column, and the specification is 30m * 0.32 mm * 1.8 [mu] m; the column temperature is 40 DEG C; the stationary phase is 6% of cyanopropyl phenyl-94% of dimethyl polysiloxane; the temperature of a sample injector is 250 DEG C; the sample size is 1 [mu] L; the split ratio is 20: 1; the carrier gas is nitrogen; the flow rate of nitrogen is 2.1 mL / min; a detector is a hydrogen ion spark detector, and the temperature of the detector is 250 DEG C. The invention further provides application of the method. The method can be used for rapidly and accurately detecting the related substances of the n-butyl bromide, realizes effective separation of the n-butyl bromide and impurities thereof, and is of great significance in improving the effective quality of the n-butyl bromide, controlling the content of the impurities brought into the synthesis reaction of the bupivacaine hydrochloride by the starting material and improving the quality stability of the bupivacaine hydrochloride.

To provide a water electrolysis-integrated methanation cell that enables water electrolysis and methanation, allowing for relatively easy temperature management, while also achieving an excellent methanation reaction rate.SOLUTION: A water electrolysis-integrated methanation cell includes: a water electrolytic part consisting of an anode part that electrolyzes water or water vapor to produce oxygen and hydrogen ions, a cathode part that reduces hydrogen ions to produce hydrogen, and a bipolar plate; and a methanation part that reduces carbon dioxide to produce a carbon compound. The bipolar plate is disposed between the anode part and the cathode part and has channels on both surfaces. The methanation part has a first channel for flowing cooling water to cool the heat generated by the methanation reaction and a second channel for supplying the water vapor generated from the cooling water due to the heat generation to the water electrolytic part.SELECTED DRAWING: Figure 1

The invention discloses a preparation method and application of a defect-rich crystalline RuO2 porous material. The defect-rich crystalline RuO2 porous material is obtained by taking a high-purity tantalum foil as a current collector, coating PS microsphere slurry on the current collector to serve as an electrode plate, soaking the electrode plate in a ruthenium source solution to adsorb Ru, and performing heat treatment under a certain condition. According to the preparation method disclosed by the invention, the complexity of a RuO2 positive electrode material process can be reduced, the RuO2 positive electrode material is non-toxic, the obtained RuO2 with a nano-porous structure has a larger surface area and multiple reactive active sites, and the material can be used as a water system hydrogen storage electrode to realize storage of hydrogen ions.

The utility model belongs to the technical field of water purification, and discloses a water purifier. The water purifier comprises a machine shell and a hydrogen-rich module, the hydrogen-rich module comprises a cup assembly and a hydrogen-rich assembly, and a through hole is formed in the bottom of the cup assembly; the hydrogen-rich assembly is detachably arranged at the bottom of the cup assembly, the hydrogen-rich assembly comprises a reaction cavity and an electrode arranged in the reaction cavity, the through hole is communicated with the reaction cavity, and the electrode is used for ionizing water to generate hydrogen ions. The cup assembly and the hydrogen-rich assembly are detachably connected, so that the hydrogen-rich assembly can be independently replaced or maintained, the maintenance cost is reduced, and the use experience of a user is improved. A hydrogen-rich component of the hydrogen-rich module in the water purifier can be independently replaced, so that the maintenance cost is low; the hydrogen-rich module is located on the front side of the machine shell, the hydrogen-rich module is convenient to maintain, and the user experience is improved.