11results about How to "Quick restore" patented technology

The application discloses a kind of nanometer zero-valent iron for electric reduction of nitrate synthesis ammonia and its preparation method and application.The catalyst is nanometer zero-valent iron material for electric reduction of nitrate synthesis ammonia, using one-step method and by regulating and controlling cobalt reagent dosing amount, nanometer zero-valent iron for electric reduction of nitrate synthesis ammonia with different cobalt content is prepared.The application includes using the catalyst as cathode, in the double-chamber electrolytic cell and direct current power supply double-chamber flow electrolytic cell system equipped with three electrodes, ammonia is prepared by electrocatalytic reduction of nitrate, and ammonia is recovered by acid absorption liquid device.The catalyst delays the problems of easy passivation of nanometer zero-valent iron and serious hydrogen evolution side reaction in the process of electrochemical reduction of nitrate, accelerates the reduction rate of nitrate, improves the ammonia selectivity and faraday efficiency of nitrate, and shows stable application performance in the process of actual wastewater electrocatalytic long-term treatment.

The invention discloses an electrocatalytic reduction membrane for high-selectivity electrocatalytic low-concentration nitrate water reductive denitrification and a preparation method of the electrocatalytic reduction membrane, and belongs to the technical field of water treatment. The method solves the problems that the removal efficiency of the low-concentration nitrate polluted water body is insufficient by adopting a conventional water treatment process, and the cost is high, the economical efficiency is poor and the environment is not protected when ammonia is directly recovered by adopting an electrocatalytic reduction method. The preparation method comprises the following steps: performing high-temperature pyrolysis on a copper-doped ZIF-8 material to obtain a Cu-CN / CB catalyst, mixing the Cu-CN / CB catalyst with PVDF and acidified CNT, and performing suction filtration to form the electrocatalytic reduction membrane. Carbon black is used as a core to grow copper-doped ZIF-8, the catalyst is obtained after carbonization, metal on the catalyst is uniformly distributed, catalytic sites are dense, and a conductive network is constructed by CNT; and by taking the reduction membrane as a cathode, optimizing the mass transfer efficiency of the catalyst and nitrate in a low-concentration nitrate water body through the CNT-Cu-CN / CB network, and fully completing nitrate adsorption-catalytic degradation in a confinement space.

The invention discloses a method for preparing duplex stainless steel powder through plasma rotating electrode atomization, and belongs to the technical field of metal powder preparation. The method comprises the steps that a duplex stainless steel consumable electrode is atomized in plasma rotating electrode atomization equipment under the argon-nitrogen-hydrogen ternary mixed atmosphere with the specific proportion and the micro-positive pressure condition, powder forming and in-situ nitriding are achieved in one step, and then obtained powder is subjected to vacuum dehydrogenation heat treatment. By accurately controlling parameters such as mixed gas proportion, dehydrogenation temperature and time and the like, based on the characteristics of plasma rotating electrode atomization, high nitrogen, low oxygen, high sphericity, uniform components and few impurities of the powder are realized, and the method is particularly suitable for high-end manufacturing fields such as hot isostatic pressing and additive manufacturing.

The application discloses a preparation method of hydrogenated aldehyde ketone resin without free formaldehyde, belongs to the technical field of aldehyde ketone resin synthesis, and aims to solve the technical problems of high free formaldehyde content, and further improved hydroxyl value stability and transparency in the hydrogenated aldehyde ketone resin in the prior art, and specifically comprises the following steps: under the protection of an inert gas atmosphere, phenylacetone, polyformaldehyde and a solvent are mixed and stirred, the reaction system is heated to 60-75 DEG C, and an inorganic alkali is added into the reaction system. The application is characterized in that the basic aldehyde ketone resin solution prepared by condensation of polyformaldehyde and phenylacetone in a water-free environment with a nickel catalyst is catalytically hydrogenated, not only the hydrogenated aldehyde ketone resin with stable hydroxyl value and extremely low colority is effectively obtained, but also the free formaldehyde content in the hydrogenated aldehyde ketone resin is effectively reduced, and the wide applicability of the hydrogenated aldehyde ketone resin in high-end coatings, adhesives and electronic materials is improved.

The application discloses a ball-milling mixed iron powder and a preparation method and application thereof. The mixed iron powder is prepared from iron powder, a solid oxidizing agent and a phenolic compound as raw materials. In a ball-milling condition, different valence iron species are generated in situ through a pre-oxidation effect of the solid oxidizing agent, self-depassivation is realized, and the passivation phenomenon generated by zero-valent iron in water is overcome. The mixed iron powder has high reactivity and can be used for wastewater treatment containing oxidizing components.

The application belongs to the technical field of metal powder preparation, and particularly relates to high-purity rhenium powder and a preparation method thereof. The high volatility of rhenium oxide is utilized, efficient volatilization of rhenium oxide is realized under vacuum conditions, and the high activity of hydrogen radio frequency plasma is utilized to rapidly and completely reduce the rhenium oxide vapor into high-purity rhenium powder, so that the reduction reaction efficiency is significantly improved, efficient and clean preparation of rhenium powder is realized, the problem of impurity introduction in the traditional reduction method can be avoided, and the product purity and particle size can meet the application requirement of high-end fields.

The invention discloses laser curing type conductive silver ink for electronic components and a preparation method of the laser curing type conductive silver ink. The laser curing type conductive silver ink comprises a silver precursor, an amine complexing agent, a non-polar organic solvent and an additive, a silver precursor and an amine complexing agent form a uniform and stable silver-amine complex solution in a non-polar organic solvent. The preparation method comprises the following steps: uniformly mixing a non-polar organic solvent, an amine complexing agent and an additive, then adding a silver precursor, stirring until the silver precursor is completely dissolved, and filtering to obtain the conductive silver ink with excellent conductivity, stability and printing performance. The invention also provides a method for preparing a conductive film on a substrate by using the conductive silver ink through a laser sintering process. According to the conductive silver ink, the light absorption characteristic of the silver-amine complex is regulated and controlled through the non-polar solvent, so that the conductive silver ink perfectly adapts to a laser sintering process, and the conductive silver ink has the advantages of being low in curing energy consumption, short in curing time, free of thermal damage to a flexible base material, high in conductivity of a formed silver film, high in adhesive force and the like, and is suitable for the fields of flexible electronics, printed circuits and the like.

The application discloses a kind of data compression of laser radar and restores transmission method, system and storage medium, wherein the method comprises: obtaining laser radar original data information;Laser radar original data is deburred and fitted, and filtered laser radar data information is obtained;The filtered laser radar data is compressed and packet processing, and the data information of compression processing is obtained;Compressed data is sent to receiving end;Receiving end sends compressed data to preset restoration algorithm, and obtains laser radar restoration data.The application is compressed by special compression processing algorithm, not only the smooth operation of radar original data, and greatly compressed the transmission memory size of data, improve transmission efficiency, reduce the transmission load of controller.

This invention discloses a method for preparing and applying nano-silicon carbide. Using petroleum-based hydrocarbons as the carbon source and nano-silicon particles obtained from the reduction of silicon-containing compounds as the silicon source, nano-silicon carbide is prepared via a two-step method combining low-temperature reduction and calcination. Specifically, silicon-containing compounds, hydrides, molten salts, and petroleum-based hydrocarbons are reduced at low temperature to obtain a silicon carbide composite. This composite is then calcined in an argon atmosphere to generate 3C-type silicon carbide particles with a particle size of 10–20 nm. The prepared nano-silicon carbide was used as a lithium-ion battery anode and tested, exhibiting good cycle stability and rate performance. This invention prepares nano-silicon carbide using a simple method combining low-temperature reduction and calcination, eliminating the need for mechanical crushing. The prepared nano-silicon carbide is a lithium-ion battery anode material with high cycle stability and excellent electrochemical performance.

The application discloses a titanium-doped silicon-carbon negative electrode material and a preparation method thereof. The preparation method comprises the following steps: S100, mixing a carbon source, a titanium source and a pore-forming agent in water to obtain a first product containing titanium oxide through freeze-drying; S200, calcining the first product in a reducing gas to obtain Ti4O7-doped porous carbon; and S300, performing gas-phase deposition of a silane gas source and a carbon gas source on the outer surface and pores of the Ti4O7-doped porous carbon in an inert gas to obtain a silicon-carbon negative electrode material. The carbon source, the titanium source and the pore-forming agent are mixed in water to generate titanium oxide, and the titanium oxide is calcined by using a reducing gas, so that the titanium oxide is reduced into Ti4O7 with metallic conductivity and high catalytic activity, and the electron transmission is fast and the structure is stable. The silane gas source and the carbon gas source are gas-phase deposited on the Ti4O7-doped porous carbon to generate silicon-carbon active substances in situ, and the structural stability and the conductivity are improved.

The application relates to the technical field of unmanned aerial vehicle flight data processing based on cloud computing, in particular to an unmanned aerial vehicle flight data processing method and system based on cloud computing, which comprises the following steps: receiving high-precision event data packages uploaded by an unmanned aerial vehicle at a data entrance of a cloud platform, and temporarily storing the high-precision event data packages; performing space-time correlation judgment on the temporarily stored high-precision event data packages to obtain a space-time correlation judgment result, so as to identify events with a space-time proximity relationship, wherein the space-time correlation judgment is performed under the constraints of a preset time window and a preset geographical range; after the events with the space-time proximity relationship are identified, logically binding the high-precision event data packages with the space-time proximity relationship according to the space-time correlation judgment result, forming an event group, and generating a group identifier for the event group; and routing the event group together with the group identifier to an event analysis processing channel. The above can help improve fault analysis efficiency.