47 results about "Hydrogen dioxide" patented technology

The invention provides a CoCe-SNC catalyst and a preparation method and application thereof, and belongs to the technical field of hydrogen fuel cell / metal air cell cathode catalysts. The preparation method comprises the following steps: mixing and grinding a metal organic framework ZIF-8 and KSCN, carrying out first pyrolysis, compounding the obtained nitrogen and sulfur-containing co-doped carbon with two metal complexes Co-PM and Ce-PM, and carrying out second pyrolysis to obtain the CoCe-SNC diatomic catalyst. According to the invention, the two-dimensional lamellar structure carbon material and the asymmetric coordination diatomic metal are compounded, so that the catalytic performance of the whole catalyst is improved, and meanwhile, the yield of hydrogen peroxide generated by side reaction is reduced. The catalyst is applied to a hydrogen fuel cell / metal air cell, and the defects that in the prior art, a noble metal catalyst is high in cost, and a non-noble metal catalyst is low in catalytic activity, high in hydrogen peroxide yield, poor in catalyst stability and the like are overcome.

The present invention comprises: a stack (1) obtained by stacking a plurality of cells (11) that generate hydrogen and power by switching between an electrolysis mode in which hydrogen and oxygen are generated by water electrolysis and a fuel cell mode in which hydrogen is oxidized to generate power; and a gas transfer controller (7) that performs fuel cell mode gas transfer control for transferring a hydrogen-containing gas (22) and an oxygen-containing gas (32) from the high-temperature side toward the low-temperature side of the stack in the fuel cell mode and / or electrolysis mode gas transfer control for transferring water vapor (52) and an oxygen electrode gas (62) from the low-temperature side toward the high-temperature side of the stack or from the high-temperature side toward the low-temperature side in accordance with the operation of the stack in the electrolysis mode.

The invention belongs to the technical field of semiconductors, particularly relates to an efficient and uniform TiN film layer cleaning process and device, discloses a cleaning process and device named'efficient and uniform TiN film layer cleaning process and device ', and aims at solving the problems that an existing TiN film layer is not uniform in cleaning, a base material is corroded, the environment is polluted and the operation safety is poor. The method is characterized in that chemical cleaning liquid containing ammonium fluoroborate, hydrogen peroxide and the like is adopted, ultrasonic activation, multi-stage soaking, rinsing and high-pressure washing are assisted, and accurate cleaning is achieved through an automatic mechanical arm and a central control system. The method can realize thorough, uniform and lossless cleaning of sediments, remarkably improves efficiency, reduces cost, prolongs the service life of equipment, and ensures operation safety and environment friendliness.

The invention relates to the field of oxidative desulfurization of oil and sulfur-containing liquid hydrocarbon fuels (including diesel fuel) and can be used to reduce harmful emissions and exhausts (in the form of sulphur oxide and carbon monoxide - SO2 and CO) of oil refineries, as well as various industrial enterprises (including energy), facilities and engines using hydrocarbon fuels. Method of oxidative desulfurization of oil and liquid hydrocarbon fuel and reducing harmful emissions of sulfur oxides and carbon provides a process of oxidation in tanks or pipelines by ozone (O3) or ozone-containing gases, in which sulfur oxides (SO2 and SO), without releasing them into the atmosphere, mix in a closed vessel or pipeline with carbon monoxide (CO) and by means of chemical reactions of sulfur monoxide decomposition (2SO↑ → SO2↑+S↓) and sulfur recovery (SO2↑ + 2CO↑ → S↓ + 2CO2↑) elemental sulfur (S) is extracted from oil or liquid hydrocarbon fuel and carbon monoxide (CO) is converted into its dioxide (CO2). The oxidation, also decomposition and recovery reactions are carried out one-step or sequentially, in the presence of oxidation-recovery group catalysts corresponding to these reactions, such as tert-Butyl hydroperoxide (C₄H₁₀O₂). Ozonized atmospheric air is used as ozone-containing gas.

The invention relates to a preparation method of a solar cell and the solar cell. The preparation method of the solar cell comprises the following steps: carrying out chemical cleaning on a silicon substrate, and removing an oxide layer on the surface of the silicon substrate; the chemical cleaning of the silicon substrate comprises the following steps in sequence: carrying out first soaking on the silicon substrate by using an ammonium fluoride solution; performing second soaking on the silicon substrate by using a mixed solution of hydrogen chloride and hydrogen peroxide; performing third soaking on the silicon substrate by using a hydrogen fluoride solution; depositing an amorphous silicon passivation layer on the surface of the silicon substrate after chemical cleaning, wherein the thickness of the amorphous silicon passivation layer is 6-8 nm; and performing hydrogen plasma treatment on the amorphous silicon passivation layer. According to the preparation method of the solar cell, a good passivation effect on the silicon substrate can be achieved, so that the interface defect state density is reduced, and the open-circuit voltage of the solar cell is improved.

1. The name of the design product: hydrogen peroxide low-temperature plasma sterilizer (PS-80X). 2. The use of the design product: for sterilization of medical wire cables, optical lenses and glass lenses, power equipment and batteries, rigid endoscopes, catheters and surgical instruments. 3. The design points of the design product: in the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: perspective view. 5. The design claimed contains color.

An apparatus for producing an organic hydride includes: a cathode electrode that generates an organic hydride and hydroxide ions from a substance to be hydrogenated and water; an anode electrode that generates oxygen by oxidizing the hydroxide ions; and an electrolyte membrane that is composed of an anion exchange membrane and is arranged between the cathode electrode and the anode electrode so as to transfer the hydroxide ions from the cathode electrode side to the anode electrode side.

A humidifier device for generating a purge gas for a lithographic apparatus, the device comprising: a first gas inlet configured to receive a first flow of a first gas; a second gas inlet configured to receive a second flow of the first gas; an enricher configured to generate an enriched gas flow comprising the second flow of the first gas and water or hydrogen peroxide; and a mixer configured to mix the first flow of the first gas with an enriched gas derived from the enriched gas flow to generate the purge gas.

The application discloses a PHI / zinc oxide heterojunction photocatalyst and a low-temperature synthesis method and application thereof. The structure of the photocatalyst is that PHI nanosheets grow well on the surface of ZnO and are tightly wrapped with ZnO, forming a sheet-shaped core layer structure, the thickness of the PHI nanosheet is 3-5 nm, and the ZnO is a wurtzite crystal structure. The low-temperature synthesis method comprises the following steps: mixing and heating a PHI precursor and a molten salt to obtain PHI, placing the PHI and a zinc oxide precursor in an aqueous solution, adding an alkali to adjust the pH, and then reacting to obtain the photocatalyst PHI / ZnO. The photocatalyst can be used for activating molecular oxygen to oxidize the C-H bond at the benzyl position of CM to prepare cumene hydroperoxide, and can also be used for a cascade oxidation reaction to form imine and sulfoxide series compounds. The application shows the advantages of the high-activity carbon nitride-based photocatalyst in the field of organic conversion, and provides an important platform for realizing the essence safety, green and efficient oxidation reaction by the peroxide strategy.

The application relates to a titanium etching solution, a preparation method thereof and application of the titanium etching solution to surface treatment of a semiconductor ceramic plate. The titanium etching solution comprises raw materials with the following weight components: 1.8-3.0% of inorganic alkali; 4.0-10.0% of hydrogen peroxide; 0.5-1.0% of a stabilizer; 0.05-0.3% of a copper surface protective agent; 0.2-0.6% of an accelerator; and the balance of deionized water. The preparation method of the titanium etching solution specifically comprises the following steps: providing the raw materials of the above components, adding the deionized water, the inorganic alkali, the hydrogen peroxide, the stabilizer, the copper surface protective agent and the accelerator into an etching tank in sequence and stirring for 5-10 min. When the titanium etching solution is applied to surface treatment of the semiconductor ceramic plate, the temperature of etching treatment is constant titanium removal at 50-60 DEG C, and the time of etching treatment is 30-100 s. The application provides the titanium etching solution with good etching uniformity, high etching rate and high etching factor.

The application discloses a kind of water removing agent and its preparation method and application.The water removing agent of the present application is a composite water removing agent composed of inorganic matrix calcium oxide, silicon oxide and activated carbon;Among them, the content of calcium oxide is 21-53wt%, the content of silicon oxide is 18-50wt%, and the content of activated carbon is 29-61wt%.The water removing agent of the present application can remove trace water in cumene hydroperoxide.The water removing agent has the advantages of good water removal effect, low cost and stable performance.

A control device (100) and method for operating a hydrogen direct injection compression ignition combustion engine (3). The method comprises injecting (S101) a pilot agent into the combustion chamber (35), thereby promoting auto-ignition of hydrogen gas fuel, wherein the pilot agent consists of a solution comprising hydrogen peroxide. The present disclosure also relates to a combustion engine system (10) comprising a direct injection compression ignition combustion engine (3) operable with hydrogen and the control device (100). The combustion engine system (10) can be comprised in a vehicle (1).

The invention relates to a method for preparing a hierarchical porous catalyst layer of a high-drainage porous membrane electrode based on micro-nano bubbles, which comprises the following steps of: generating oxygen bubbles under the catalysis of carbon-loaded platinum by taking hydrogen peroxide as a bubble source, and constructing the high-drainage porous membrane electrode by taking the micro-nano bubbles as a template; the specific method comprises the following steps: dissolving a carbon-supported platinum catalyst PtC and a Nafion solution in ethanol and water to obtain a solution, carrying out ultrasonic treatment on the solution, dropwise coating the solution on carbon paper at 80 DEG C, and dropwise adding a hydrogen peroxide solution in the coating process; and drying in a vacuum freeze drying box after air drying. According to the invention, the membrane electrode with high porosity is constructed, so that liquid water is effectively prevented from blocking pores, and the phenomenon of water logging in the battery is relieved. According to the preparation method, shrinkage and agglomeration of catalyst particles are avoided, and the hierarchical porous catalyst layer of the porous membrane electrode with high drainage performance is obtained. The invention also provides application of the porous membrane electrode in the field of fuel cells.

The application provides a preparation method and application of hollow cerium dioxide nanoparticles, and the preparation method comprises the following steps: (1) preparing nanosilica particles by a solvothermal method to obtain a powder; (2) generating a cerium dioxide shell layer on the surface of the nanosilica particle template by the solvothermal method to obtain a powder; (3) calcining the obtained powder; and (4) etching the core-shell structure nanoparticles by alkali to obtain the hollow cerium dioxide nanoparticles. The nanoscale hollow cerium dioxide nanoparticles are synthesized through a simple reaction, the size and morphology are uniform, the synthesis steps are simple, and the hollow cerium dioxide nanoparticles are suitable for batch production. Through experiments, the hollow cerium dioxide nanoparticles have peroxidase and superoxide dismutase enzyme-like activities, so that the hollow cerium dioxide nanoparticles have good scavenging capacity for active oxygen and are suitable for application in biomedical research.

The application belongs to the technical field of electrocatalytic materials, and discloses a Fe3C / Fe SA -N-C catalyst and a preparation method and application thereof; the Fe3C / Fe SA -N-C catalyst comprises a nitrogen-doped carbon carrier, and iron monatomic atoms and Fe3C nanoparticles loaded on the nitrogen-doped carbon carrier; the iron monatomic atoms are atomically dispersed on the nitrogen-doped carbon carrier; and the Fe3C nanoparticles are coated by a carbon layer in the nitrogen-doped carbon carrier. The catalyst has high electrocatalytic activity, optimal reaction kinetics performance, good stability, and low hydrogen peroxide production rate. When the catalyst is used for an air electrode of a zinc-air battery, the peak power density of the zinc-air battery is as high as 167 mW·cm ‑2 , and the zinc-air battery has excellent charge-discharge cycle stability of up to 1200 h.

The present application relates to a kind of preparation method of red fluorescent carbon dots and application in detecting hypochlorite;Firstly, N,N'-(1,4-phenylene) bis(N-(4-aminophenyl) phenyl-1,4-diamine), tert-butyl hydroperoxide and hydrochloric acid are dispersed in ethanol, then the mixture is carbonized by solvothermal method, after separation and purification, the carbon dots of red fluorescent emission are obtained;The prepared red fluorescent carbon dots can be applied to the rapid detection of residual hypochlorite ions in utensils.Compared with prior art, the red fluorescent carbon dots in the present application have long emission wavelength, and the preparation method is simple, fast response (~10 seconds), high selectivity, wide applicable pH range (5-9), good reproducibility and other advantages, and has broad application prospect in rapid detection of residual hypochlorite in utensils.

A rocket engine configured to run on a liquid fuel and liquid hydrogen peroxide is started by impinging high pressure streams of a fuel and liquid H2O2 into a combustion chamber under pressure and temperature conditions sufficient to decompose the liquid H2O2 into hot water stream and oxidizer and achieve ignition.

The invention provides a preparation method of a porous carbon / nano-manganese dioxide composite material and application of the porous carbon / nano-manganese dioxide composite material as a positive electrode material of a zinc ion battery, and relates to the technical field of electrochemical energy storage. The method comprises the following steps: dissolving manganese nitrate tetrahydrate and sorbitol in deionized water to form a mixed solution, drying, adding ammonium chloride into the obtained blocky mixture, and grinding into powder; the powder is heated to 600-800 DEG C in an argon atmosphere, heat preservation is conducted for 1 h, then the temperature is reduced to 200-350 DEG C, heat preservation is conducted for 1 h, and air is continuously introduced in the heat preservation process after cooling; and placing the product in a hydrogen peroxide solution, adjusting the pH value to 13, stirring for reaction, filtering, washing and drying to obtain the porous carbon / nano manganese dioxide composite material. The method can solve the problems of low manganese dioxide conductivity, slow diffusion kinetics, manganese dioxide dissolution and the like in the prior art. The obtained porous carbon / nano manganese dioxide shows good electrochemical performance as a zinc ion battery positive electrode material, and has a good application prospect.

The utility model relates to the technical field of chemical industry production, and discloses a device for filtering impurities in tert-butyl hydroperoxide production, which comprises a siphon barrel body and a filter plate, the top of the siphon barrel body is in threaded connection with a cover plate, the inside of the cover plate is fixedly connected with a hand hole, and the right side of the inside of the cover plate is fixedly connected with a water injection port. A tank outlet is fixedly connected to the interior of the left side of the siphon barrel body, a tank inlet is fixedly connected to the interior of the right side of the siphon barrel body, a tuning fork is fixedly connected to the exterior of the siphon barrel body, a discharge port is fixedly connected to the front side of the siphon barrel body, and fixing blocks are fixedly connected to the front side and the rear side of the interior of the siphon barrel body. According to the utility model, the mounting and dismounting of the filter screen are realized, so that the tedious bolt screwing process is avoided, the manpower is effectively saved, the labor intensity is reduced, the dismounting of the filter screen becomes easy and convenient, the filter screen can be maintained in time, and the production continuity is guaranteed.

The invention discloses a safe and efficient combined concentration device for cumyl hydroperoxide and a concentration method thereof, and particularly relates to the technical field of concentration production of cumyl hydroperoxide. Comprising a raw material storage unit, a first-stage rising film evaporation separation unit, a multi-stage combined falling film evaporation separation unit, a condensation recovery unit, a vacuum system unit and a cooling storage unit, by designing the two-stage and three-stage combined falling-film evaporators, the number of the falling-film evaporators can be adjusted according to the production load requirement, and when the load is lower than the lowest flow of the combined falling-film evaporators and the requirement for film forming in the falling-film evaporators cannot be met, the falling-film evaporators can be separated. By closing feeding valves entering the second-stage falling film evaporator A or the second-stage falling film evaporator B and the third-stage falling film evaporator A or the third-stage falling film evaporator B, operation of a single set of system is kept, the film distribution effect in the falling film evaporators is ensured, the low-load operation requirement is met, double-set cooperative operation can be achieved during high load, the treatment efficiency is improved, and the energy consumption is reduced. And different productivity requirements can be perfectly met.

A rocket engine configured to run on a liquid fuel and liquid hydrogen peroxide is started by impinging high pressure streams of a fuel and liquid H2O2 into a combustion chamber under pressure and temperature conditions sufficient to decompose the liquid H2O2 into hot water stream and oxidizer and achieve ignition.

The application discloses a gas generator of an air turbine rocket engine, which comprises a shell, an ignition device, a liquid supply system and a combustion chamber; the gas generating agent used by the gas generator comprises ADN ionic liquid solution, kerosene and high-metal solid fuel; the liquid supply system comprises an ionic liquid storage tank and a kerosene storage tank, and the ionic liquid storage tank and the kerosene storage tank store ADN ionic liquid solution and kerosene respectively; the liquid supply system adopts an electric pump to supply liquid to the combustion chamber in the shell, and the electric pump is used to adjust the delivery pressure and flow rate; the ignition device is arranged in the combustion chamber, and a high-metal solid fuel grain is arranged at the tail of the inner cavity of the shell; the high-metal solid fuel grain is of an inner hole combustion type, and the surface of the central hole is of a spiral groove structure. The application has the advantages of solid high energy density and liquid adjustability, overcomes the problems of high danger of traditional hydrogen peroxide and low-temperature use of liquid oxygen, and significantly improves the specific impulse, safety and mission adaptability of the engine.

The invention discloses gel microspheres and a preparation method thereof based on bubble generation and polymer in-situ deposition, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: mixing polyacrylamide (PAM) or partially hydrolyzed polyacrylamide (HPAM) gel with the concentration of 1-20.0% (w / v) with a Fenton-like system with the concentration of 1-10%, which is prepared from hydrogen peroxide and complex iron in a molar ratio of (10.2-10.5): 1, according to a mass ratio of 1: (5-12), putting the mixture into a container for reaction, and adding a free radical quencher after the reaction is finished, so as to obtain the gel microspheres. According to the method, polymer degradation and bubble in-situ generation are synchronously achieved through a Fenton-like reaction, polymer fragments generated through degradation and system salt are self-assembled on a gas-liquid interface to form a compact shell layer, and the structured microspheres with the hollow interior are constructed in one step. The prepared gel microspheres have the diameter of 10-50 microns, the shell thickness of 1-5 microns and the compressive strength of 2-5 MPa, and have the advantages of simple process, high controllability, compact shell and high strength.

According to the invention, in a method for producing a catalyst arrangement (1) which has a support structure (2), wherein the catalyst arrangement (1) is designed to break down decontamination residues (3), in particular hydrogen peroxide (4), in a controlled containment (5), in particular an isolator (6), it is proposed that the support structure (2) of the catalyst arrangement (1) is additively manufactured, wherein the support structure (2) consists of a support material (8) which is provided with an adhesion promoter (7), said support material being in particular homogeneously and / or uniformly mixed, wherein the support structure (2) of the catalyst arrangement (1) is formed from layers (11, 11') consisting of preferably linear filament structures (10), wherein each layer (11) is criss-crossingly overlaid (15) over a next layer (11') and wherein the catalyst arrangement (1) is designed in particular as a component of an air treatment device (22).

The invention provides a layered vanadium pentoxide composite material, a preparation method thereof and a magnesium secondary battery, and the method comprises the following steps: (1) mixing V2O5 with water to obtain a solution A; (2) mixing the solution A with a hydrogen peroxide solution to obtain a solution B; (3) mixing the solution B with a pyrrole monomer to obtain a solution C; and (4) carrying out hydrothermal reaction on the solution C to obtain the layered vanadium pentoxide composite material. The layered vanadium pentoxide composite material obtained by the method disclosed by the invention has excellent ionic conductivity, electronic conductivity and cycling stability, so that when the layered vanadium pentoxide composite material is applied to a battery, the rate, the capacity and the cycle life of the battery can be improved.

This invention relates to the field of thermal insulation materials, specifically to a thermal insulation material for liquid crystal display screen ICs. The method includes: bonding a modified graphite thermally conductive film to a release surface to obtain a first-cut semi-finished product; bonding the adhesive side of the thermal insulation film of a third-cut semi-finished product to the adhesive-free side of the first-cut semi-finished product; bonding a composite to the double-sided adhesive side of a second-cut semi-finished product to obtain a fourth-cut composite semi-finished product; firstly, bonding the adhesive-free side of a 0.05T protective film to the adhesive side of a backing film to obtain a fifth-cut semi-finished product; and finally bonding the fifth-cut semi-finished product to the fourth-cut composite semi-finished product to obtain the thermal insulation material for liquid crystal display screen ICs. This invention utilizes a hydrogen peroxide-ammonia solution to treat the graphite film, introducing hydroxyl and carboxyl polar groups onto the graphite surface, effectively breaking its chemical inertness and providing sufficient active sites for subsequent grafting of silane coupling agents. Based on this, the bridging effect of the silane coupling agent is used to uniformly load silver particles onto the graphite film surface.

The invention relates to a dihydroquercetin nano preparation and application thereof in treatment of pulmonary nodules, the dihydroquercetin nano preparation is in an irregular spherical shape, C, O, N and Ce elements coexist, the molar ratio of Ce < 4 + > to Ce < 3 + > is 1.57, and the dihydroquercetin nano preparation has enzyme-like activity of superoxide dismutase, catalase, peroxidase and glutathione and can realize enzyme cascade reaction; the preparation method of the dihydroquercetin nano preparation comprises the following steps: step 1, respectively dissolving Ce (NO3) 3.6 H2O and dihydroquercetin in a beaker filled with methanol; and 2, adding the two solutions into a beaker filled with a PEG 8000 methanol solution, starting an assembly process, and stirring at room temperature to obtain qualified CeDHQNCs, namely the dihydroquercetin nano preparation. The dihydroquercetin nano preparation shows excellent enzyme-like activity and high active oxygen scavenging ability, can inhibit pulmonary nodule growth and inflammation infiltration, and provides a new means for pulmonary nodule treatment.

The invention discloses a method for improving activity of chlorella antioxidase by using a CO2 photocatalytic reduction product and application. The method comprises the following steps: inoculating a chlorella seed solution into a liquid culture medium added with a CO2 photocatalytic reduction product, culturing for 7 days, and measuring the activity of antioxidant enzyme in chlorella, wherein the CO2 photocatalytic reduction product is a one-carbon and / or two-carbon organic compound obtained by carrying out photocatalytic reduction reaction on CO2 under the action of a nano photocatalyst. By applying the method disclosed by the invention, the activity of superoxide dismutase (SOD), the activity of catalase (CAT) and the activity of peroxidase (POD) in the chlorella can be respectively improved by 12.7%-30.3%, 92.5%-102.3% and 43.0%-53.5%. According to the method, high-value utilization of the artificial photosynthetic carbon sequestration product is realized, a new environment-friendly path is provided for CO2 recycling, and meanwhile, the economic value and the carbon sequestration efficiency of the chlorella are improved.

Accurately measure the concentration of hydrogen peroxide gas. [Solution] The device comprises a measuring cell provided with a transmissive window, a first sensor that measures the temperature of the gas and generates a first electrical signal, a second sensor that measures the pressure of the gas and generates a second electrical signal, a first photodetector that converts the amount of light of a predetermined wavelength incident on the gas from the transmissive window into a fourth electrical signal, a second photodetector that receives the amount of light that has passed through the gas and exits the transmissive window into a fifth electrical signal, and a calculation unit that calculates the gas concentration based on the first electrical signal, the second electrical signal, the fourth electrical signal, and the fifth electrical signal.