93 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 invention provides a regulation and control method for prolonging the refreshing time of prunes, which comprises the following steps: disinfecting a phase-temperature fresh-keeping storehouse for 24 hours by using absolute ethyl alcohol, and ventilating for 8-10 hours to ensure a sterile environment. During harvesting, prunes which are free of plant diseases and insect pests, free of mechanical damage, complete in fruit cream and larger than or equal to 20% in sugar content are selected, and the temperature of the prunes is rapidly reduced to 2-2.2 DEG C within 10 hours by means of portable differential pressure precooling equipment. After precooling, a methyl jasmonate aqueous solution is adopted for electrostatic atomization spraying, and 1-methylcyclopropene is used for airtight fumigation for 18-20 hours to inhibit ethylene generation and respiration. And then, storing in a phase temperature warehouse at the temperature of-1.5 to-1.2 DEG C, controlling the relative humidity to be 85-87%, and carrying out intermittent nano-atomization sterilization by using a hydrogen peroxide aqueous solution once every 15-18 days. According to the method, the fresh-keeping effect of the prunes is comprehensively improved, the safety and the quality of the fruits are ensured, and the fresh-keeping period is remarkably prolonged.

The invention discloses a preparation method of 1, 1, 3, 3-tetramethyl butyl peroxypivalate, and belongs to the technical field of organic compound preparation. The method comprises the following steps: mixing 1, 1, 3, 3-tetramethylbutyl hydroperoxide and pivaloyl chloride, pumping the mixture into a tubular fixed bed reactor filled with a catalyst, controlling the mass space velocity at 0.04-0.1 g.min <-1 > / g and the temperature at 20-35 DEG C to obtain 1, 1, 3, 3-tetramethylbutyl peroxide; the catalyst is a copper-vanadium molybdenum oxygen cluster [Cu (1-iPIM) 4] 3 [VMo12O40] catalyst. According to the present invention, the tubular fixed bed reactor is adopted to prepare the 1, 1, 3, 3-tetramethyl butyl peroxypivalate, and the flow rate and the material retention time can be accurately controlled to increase the utilization rate and the stability of the catalyst so as to achieve the continuous production of the 1, 1, 3, 3-tetramethyl butyl peroxypivalate.

The invention discloses a preparation method of tert-butyl peroxyneodecanoate, which is characterized in that zinc oxide is uniformly dispersed on a graphene oxide / attapulgite composite carrier interface in a nano-particle form through a hydrothermal method to form a supported catalyst with a high specific surface area, active sites are fully exposed, the catalytic efficiency is obviously improved, and the catalytic activity is improved. Zinc oxide and a carrier form strong interaction, in the reaction process, an adaptive alkaline system is optimized, the composite catalyst shows high selectivity in a sodium hydroxide / tert-butyl hydroperoxide system, the residual quantity of byproducts is smaller than or equal to 0.01%, reaction conditions are mild, high-temperature and high-pressure equipment is not needed, the catalyst can be recycled, and the content of metal ions in waste liquid is smaller than or equal to 0.1 ppm; the purity of the obtained product tert-butyl peroxyneodecanoate is more than or equal to 99.5%, the active oxygen content reaches 7.2-7.5%, the decomposition temperature is more than or equal to 120 DEG C, the 10h half-life period temperature is 75-80 DEG C, the initiation efficiency is more than or equal to 95% when the tert-butyl peroxyneodecanoate is used as an initiator, the light transmittance is more than or equal to 92%, the molecular weight distribution index is less than or equal to 2.5, no implosion phenomenon exists in the polymerization process, and the advantages of high efficiency, low consumption

The invention discloses an isobutane oxidation method and system. The method comprises the following steps: 1) mixing gas flow rich in isobutane and gas flow rich in nitrogen to prepare first carrier gas for later use; 2) uniformly mixing oxygen with a first carrier gas in proportion to obtain an oxygen-containing gas flow with the oxygen concentration of 1-10vol%; 3) feeding the oxygen-containing gas flow into the bottom of the reactor to react with liquid-phase iso-butane entering the reactor to generate tert-butyl hydroperoxide.The method ensures operability and safety of iso-butane oxidation reaction by setting two-component carrier gas of iso-butane and nitrogen in different proportions and introducing oxygen with safe concentration into the reactor through preparation, and is suitable for industrial production. Moreover, nitrogen circulation in the carrier gas is separately arranged, only one compressor needs to be arranged for a system with multiple reactors, meanwhile, liquid-phase materials of the multiple oxidation reactors overflow to the next stage by means of gravity, an inter-stage conveying pump is omitted, and equipment investment is reduced.

A control arrangement (100) and a method for operating a hydrogen direct-injection compression-ignition combustion engine (3). The method comprises injecting (5101) a pilot into the combustion chamber (35) to thereby facilitate auto-ignition of hydrogen fuel, wherein the pilot consists of a solution comprising hydrogen peroxide. The disclosure also relates to a combustion engine system (10) comprising a direct-injection compression-ignition combustion engine (3), operable on hydrogen, and the control arrangement (100). The combustion engine system (10) may be comprised in a vehicle (1).

The invention discloses a method for producing epoxypropane with low energy consumption by a cumene method. Comprising the following steps: S1, carrying out a reaction on cumene and oxygen-containing gas in a gas-liquid bubbling bed reactor to obtain an oxidation solution with the concentration of cumene hydroperoxide being 30-70%, and removing impurities to obtain dried cumene hydroperoxide, S2, carrying out a reaction on the dried cumene hydroperoxide and propylene in a tubular fixed bed reactor to obtain an epoxide material, recovering excessive propylene from the epoxide material, and recovering the propylene from the epoxide material to obtain the cumene hydroperoxide. S3, carrying out hydrogenolysis reaction on the crude alpha, alpha-dimethyl benzyl alcohol and hydrogen, so as to convert the crude alpha, alpha-dimethyl benzyl alcohol into crude cumene; s4, heavy component removal, light component removal and alkali washing are conducted on the crude cumene, impurities in the crude cumene are removed, and then the crude cumene is returned to the step S1. According to the method, the oxidation depth of the cumene in the oxidation unit is increased, the circulation amount of the cumene is greatly reduced, the energy consumption of the device is greatly reduced, and the economical efficiency of the device is improved.

For powering a vehicle, a high energy density fuel is preferred. However, for example when the high energy fuel is highly concentrated hydrogen peroxide, this fuel may be dangerous to handle; especially when the person handling the fuel is a normal consumer filling a fuel reservoir of his vehicle at a gas station. The present invention therefore provides a vehicle arranged to receive a diluted—and thus safer—fuel, and to density this fuel to a concentrated fuel in low quantities on board for direct use. To this end a fuel densifier is provided in the vehicle arranged for receiving liquid diluted fuel and arranged to provide a concentrated fuel based on the diluted fuel, the concentrated fuel having a higher energy density than the diluted fuel. A power conversion module of the vehicle is arranged to convert the concentrated fuel to kinetic energy for powering the vehicle.

The invention discloses an In2O3-Ti3C2@GOx biological heterojunction, a hydrogel microneedle, a preparation method and an application thereof, and relates to the technical field of hydrogel microneedles. The preparation method of the In2O3-Ti3C2@GOx biological heterojunction comprises: adding In(NO3)3·xH2O (x is 1-10) and Ti3C2 to a solvent, mixing, heating, and centrifuging to obtain a precipitate; washing and drying the precipitate, calcining under oxygen-isolating conditions to obtain In2O3-Ti3C2; soaking the In2O3-Ti3C2 in a glucose oxidase solution, freeze-drying, and obtaining a hydrogel microneedle loaded with the In2O3-Ti3C2@GOx biological heterojunction, a preparation method and an application thereof. Compared with the prior art, the hydrogel microneedle of the invention can generate active oxygen and redox glutathione in the presence of hydrogen peroxide, enhance the killing effect of active oxygen on bacteria, and improve the therapeutic effect.

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 discloses an indium manganese sulfide-covalent organic framework MIS / BT50 composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalysis. According to the preparation method, a solvothermal method synthesis strategy is adopted, indium manganese sulfide is introduced into a covalent organic framework, and the indium manganese sulfide-covalent organic framework MIS / BT50 composite photocatalyst is constructed; the composite photocatalyst has excellent visible light response capability, hydrogen peroxide can be efficiently prepared under visible light, and the yield of hydrogen peroxide in a pure water system reaches up to 3519 [mu] mol.g <-1 >. H <-1 >; meanwhile, under the condition that no extra iron source is added, the composite photocatalyst can rapidly inactivate escherichia coli in a water body, and the limitation that a traditional Fenton reaction depends on the iron source is broken through; the invention discloses a preparation method of the composite photocatalyst, and a solvothermal method is simple and controllable in preparation process, mild in reaction condition, high in raw material utilization rate and suitable for large-scale production.

The utility model discloses a VHP sterilization transfer cabin, which relates to the technical field of sterilization equipment and comprises a shell, a transfer cavity is arranged in the shell, and cavity doors are arranged in front of and behind the transfer cavity; the air inlet assembly is arranged on the outer wall of the shell, and the air inlet assembly communicates with the transfer cavity; the exhaust assembly is arranged on the outer wall of the shell, the air inlet assembly and the exhaust assembly are symmetrically arranged relative to the shell, the exhaust assembly communicates with the transfer cavity, and the structures of the exhaust assembly and the air inlet assembly are the same; the air inlet assembly comprises a flow equalizing cabin, the flow equalizing cabin is provided with a first opening and a second opening, the first opening is communicated with the transfer cavity, a flow equalizing plate is mounted on the first opening, multiple rows of vent holes are formed in the flow equalizing plate, each row comprises a plurality of vent holes, and the distances between the adjacent vent holes are equal; the air inlet cabin is connected to the flow equalizing cabin, the air inlet cabin comprises an air inlet and an air outlet, the air outlet is communicated with the second opening, and the air inlet is communicated with the vaporized hydrogen peroxide generator. According to the VHP sterilization transfer cabin, no-dead-corner disinfection treatment on objects is realized, and the disinfection time is shortened.

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.

Embodiments described herein generally relate to processes for making carbon quantum dots (CQDs). A method includes adding a coal product, a H2O2 solution, and water to a reactor. The coal product, the H2O2 solution, and the water form a mixture. The reactor is heated to a temperature of about 60°C to about 100°C to catalyze the carbon quantum dot (CQD) production mechanism within the mixture to form a CQD. The CQD is collected. The CQD includes carbon spheres with a diameter of about 15 nm or less. A controller may be programmed to perform the method.

The present invention comprises: (a) a step of supplying a first fluid containing hydrogen peroxide to a substrate on which a silicon-containing film and a metal film are formed; and (b) a step of supplying a second fluid including a carboxy group to the substrate.

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 invention relates to the technical field of semiconductor material processing, in particular to a method for polishing a gallium oxide crystal, which comprises the following steps: a) a surface pretreatment step: treating the surface of the gallium oxide crystal by adopting CF / Oplasma to form a GaF and Ga (OH) mixed modified layer; b) a main polishing step: carrying out main polishing on the pretreated gallium oxide crystal by using a polishing solution containing a hydrogen peroxide system activated by bicarbonate in a low-temperature environment in combination with ultrasonic assistance; c) a precision polishing step: in a lower temperature environment, using a polishing solution with lower pressure and an improved formula to carry out precision polishing on the gallium oxide crystal; and d) a cleaning and post-processing step: a multi-stage cleaning process is adopted to remove polishing residues and repair surface defects, the material removal rate is increased by about 2.3 times (reaching 1.2 [mu] m / h), and the surface roughness Ra is reduced by about 2 times (reaching 0.09 nm).

The present invention relates to the field of oil pipeline heat preservation, and relates to an anti-corrosion and heat-insulating material for oil pipelines and a preparation process thereof. (1) Spread the modified basalt fibers flat, spray the modified binder and waterproof agent, continue to spread the modified basalt fibers on it and repeat the above spraying to obtain an intermediate anti-corrosion and heat-insulating material; (2) Compress the intermediate anti-corrosion and heat-insulating material and put it into a dryer for drying and curing to obtain the anti-corrosion and heat-insulating material. In the present invention, by spraying an aqueous sodium silicate solution on the basalt fibers, SiO4 tetrahedrons and AlO4 tetrahedrons will dissociate on the surface of the basalt fibers. Then, spray the hydrogen peroxide solution, which decomposes to produce O2 under alkaline conditions. The SiO4 tetrahedrons and AlO4 tetrahedrons are connected by sharing O bridges, and a polymerization reaction occurs to form oligomers. And under the impact of O2, voids will be formed on the fiber surface and the oligomers, thereby improving the heat preservation performance and connection strength of the rock wool material.

The present invention relates to the technical field of cumene oxidation, and specifically to a cumene oxidation reaction system and method, comprising an oxidation tower and a gas-liquid separator; the oxidation tower is sequentially provided with a bubbling reactor and a microbubble generator from top to bottom; the bottom of the oxidation tower is connected to a gas supply device and a liquid supply device, respectively, and the top is connected to the gas-liquid separator; the top of the gas-liquid separator is connected to a condensing device and the gas supply device, respectively, and the condensing device is connected to an oxygen analysis device; a liquid circulation device is provided between the bottom of the gas-liquid separator and the bottom of the oxidation tower, for circulating the liquid inside the gas-liquid separator to the inside of the microbubble generator. Utilizing this system, the efficiency of cumene oxidation to produce cumene hydroperoxide can be effectively improved, and the system has the advantages of high cumene hydroperoxide production rate, high selectivity, and high safety.

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 invention relates to the field of catalyst preparation, and discloses a zinc oxide-zirconium oxide catalyst and a preparation method thereof, a composite catalyst and application thereof, and a method for preparing hydrocarbons through carbon dioxide hydrogenation. The invention relates to a preparation method of a zinc oxide-zirconium oxide catalyst, which comprises the following steps: (1) placing zinc oxide at the upstream of zirconium oxide along the introduction direction of carrier gas under the action of the carrier gas, and then carrying out heat treatment; according to the zinc oxide-zirconium oxide catalyst prepared by the method disclosed by the invention, the obtained composite catalyst has excellent catalytic performance. The composite catalyst is applied to a reaction for preparing hydrocarbon compounds through carbon dioxide hydrogenation, and the selectivity of target hydrocarbon products is high.

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 present disclosure relates to a fuel cell including a durability-enhancing layer and a method for manufacturing the same. The fuel cell includes: an electrolyte membrane-electrode assembly; a durability-enhancing layer formed on at least one side of the electrolyte membrane-electrode assembly; and a gas diffusion layer formed on a side of the durability-enhancing layer opposite the side on which the electrolyte membrane-electrode assembly is formed. The durability-enhancing layer includes a hydrogen peroxide decomposition catalyst and a hydrogen ion conductive polymer and is formed on at least a portion of at least one side of the electrolyte membrane-electrode assembly.