80 results about "Plasma reaction" patented technology

The invention discloses a denitration, desulfurization and noise elimination integrated purification system for a ship. The system comprises a cylindrical shell, and the interior of the cylindrical shell is divided into two cavities, namely a first expansion cavity and a second expansion cavity, by a perforated plate and a perforated pipe which are fixed to the cylindrical shell; the perforated pipe serves as an inner electrode, the cylindrical shell serves as a grounding electrode, an annular space among the perforated plate, the perforated pipe and the aluminum oxide ceramic serves as a discharge area, and the first expansion cavity and the second expansion cavity serve as an absorbent premixing and primary silencing unit and a plasma reaction and secondary silencing unit respectively. And a chemical absorption unit and a waste liquid collection unit are arranged at the downstream of the plasma reaction and secondary silencing unit in the tail gas flowing direction. According to the system, the two stages of expansion cavities and the tubular electrodes installed on the perforated plate form a composite noise elimination structure, and remarkable noise reduction is achieved. The device has the outstanding advantages of being compact in structure, light in weight, free of catalyst dependence, efficient in working in a wide temperature range and the like, and has a good reduction effect on harmful gas in low-temperature flue gas of a ship engine.

The invention discloses a system for hydrogen production and carbon production through methane cracking synergistically enhanced by plasma. The system comprises a gas source, a cracking reaction bin and a plasma torch, a double-layer stainless steel sleeve catalytic carrier is arranged in the cracking reaction bin, the double-layer stainless steel sleeve catalytic carrier comprises an inner-layer sleeve and an outer-layer sleeve, through holes with the aperture of 5-10 microns are distributed in the inner-layer sleeve, and through holes with the aperture of 20-50 microns are distributed in the outer-layer sleeve; the inner wall of the inner-layer sleeve is coated with a catalytic coating; the gas source provides and conveys methane gas into the cracking reaction bin; and the direct-current plasma torch conveys high-temperature plasma into the double-layer stainless steel sleeve catalytic carrier. A double-layer porous stainless steel sleeve is constructed in a plasma reaction cracking bin to serve as a catalytic carrier to load a catalytic coating, and a deep coupling structure of plasma cracking and catalytic cracking is constructed; and efficient conversion of methane and synchronous preparation of a high-added-value carbon material and high-purity hydrogen energy are realized.

The invention relates to a dielectric barrier discharge-sliding arc coupled plasma reaction device and application thereof, and belongs to the technical field of plasma chemistry and efficient utilization of methane resources. The reaction device comprises a tubular reaction cavity, a high-voltage electrode arranged in the reaction cavity and a grounding electrode arranged on the outer side of the reaction cavity, and a dielectric barrier discharge structure is formed between the high-voltage electrode and the grounding electrode through the wall of the reaction cavity; at least two bent electrode parts which are arranged at intervals are arranged at the lower end of the high-voltage electrode, and gliding arc discharge is formed under the flowing action of reaction gas, so that dielectric barrier discharge and gliding arc discharge are simultaneously generated in the same reaction cavity. Through the coupling discharge mode, the synergistic effect of the high-energy density plasma and the large-volume uniform plasma is realized, and the activation efficiency and the reaction regulation and control capability of low-carbon alkane molecules can be effectively improved. The device is simple in structure and stable in operation, can be cooperatively used with a catalyst, and is used for plasma catalytic conversion and related reaction processes.

This invention provides a method for preparing graphene quantum dots based on thermal coal and a plasma reaction system, belonging to the field of graphene quantum dot preparation technology. The method includes the following steps: using thermal coal as raw material, it undergoes electrochemical oxidation and KOH ball milling sequentially to obtain pretreated coal; the pretreated coal is introduced into an axial magnetic rotating microwave plasma reactor for segmented temperature-controlled dissociation and recombination reactions; during the reaction, a porous alumina template is used for confined growth, and after the reaction, liquid nitrogen quenching is employed to obtain graphene quantum dots. This invention uses thermal coal to replace high-purity graphite as the carbon source, reducing raw material costs by more than 99%; the pretreatment process, through the synergistic effect of electrochemical oxidation and KOH ball milling, eliminates the need for strong acids and alkalis throughout, completely avoiding the pollution problems of large amounts of acidic and heavy metal-containing wastewater and waste gas generated by the traditional Hummers method, thus aligning with the concepts of green chemistry and sustainable development.

The application provides a double sandwich cup type dielectric barrier discharge fuel plasma gasification research device, three quartz cups with different sizes are nested and combined, a double layer cavity is formed at the bottom of the quartz cup, air in the upper layer cavity is extracted to form a vacuum layer, heat transfer in the heating area to the dielectric layer and the sealing area of the upper quartz cup is blocked, the quartz dielectric is prevented from being broken down under high temperature conditions, and air leakage caused by melting of the sealing structure under high temperature conditions is avoided. The lower layer cavity is used for placing a solid sample to carry out high temperature plasma reaction, reaction kinetics is obtained by detecting tail gas of the reaction, the thickness of the reaction cavity is controlled through the sealing pad, and the dead volume of the reaction is reduced. The circular protrusion in the grounding heating block binds the electric arc generated by the discharge electrode, and the discharge phenomenon at the edge of the discharge electrode is avoided. The integrated design reduces the complexity of installation of the experimental instrument, is easy to operate, and realizes the research on the plasma gas-solid reaction mechanism under the dielectric barrier discharge under high temperature conditions.

The utility model relates to heating platform structure technical field especially relates to a kind of heating platform structure for vacuum cavity.Its technical scheme includes vacuum cavity and with the lower cavity component of vacuum cavity moulding, the lower cavity component includes lower cavity plate and heating plate component, vacuum joint and at least one group of collar joint are fixedly installed on lower cavity plate, oil passage is equipped in the heating plate component, temperature measuring thermocouple component is fixedly installed on lower cavity component, and the temperature measuring thermocouple component real-time monitoring heating plate component's temperature.The utility model improves the temperature of reaction cavity to suitable range, makes the active particle movement speed of oxygen plasma accelerate, and the chemical reaction rate of photoresist is significantly improved, realizes the uniform distribution of cavity temperature, and promotes to ensure the plasma reaction consistency of each area of workpiece surface.

This application relates to the field of plasma reaction devices and discloses a multi-chamber plasma experimental system based on unified electrode spacing adjustment. The system includes a first plastic plate, with uniformly distributed reaction vessels fixedly connected to the top of the first plastic plate. Telescopic vessels are slidably connected to the inner diameter of each reaction vessel, and second plastic plates are fixedly connected to the top of each telescopic vessel. A sample inlet is fixedly connected to the bottom of each reaction vessel, penetrating the first plastic plate. The system also includes a reaction control system comprising an inlet control module, a sample inlet control module, and a metal plate distance control module. The distance between the second and first plastic plates is adjusted via the metal plate distance control module, thereby adjusting the position of the metal plates and thus the discharge spacing. Real-time control of various reaction conditions in each reaction vessel allows for simultaneous degradation experiments of the same pollutant under different conditions, facilitating control experiments.

An apparatus, system, and method for generating a targeted electromagnetic pulse is presented. The apparatus includes a plasma generation apparatus including a housing element, a plasma reaction chamber, multiple electrode rings, and a power supply. The plasma reaction chamber is defined by an inner surface of the housing element and is configured to generate an electromagnetic field. Multiple electrode rings are disposed within the plasma reaction chamber to form an arc path. The power supply is coupled to the outer surface of the housing element to produce an electromagnetic pulse. The power supply includes primary coils, a secondary coil wound about the primary coils, and a coil core. A catalyst injection collar is coupled to the plasma generation apparatus and configured to direct a catalyst material into the plasma reaction chamber to amplify the electromagnetic pulse.

The invention relates to the technical field of solid waste resource utilization, in particular to a waste wind power blade high-temperature plasma recovery system and device based on AI closed-loop control, and the system comprises a raw material pretreatment module which is used for receiving waste wind power blades and carrying out crushing and drying treatment on the waste wind power blades to obtain pretreated materials; the high-temperature plasma cracking module is connected with the raw material pretreatment module and is used for receiving the pretreated material and cracking the pretreated material into combustible gas and solid residues; comprising a high-temperature plasma reaction chamber, a plasma generating device, a feeding device, a reaction chamber monitoring sensor group and an AI control unit, the gas-solid separation and condensation module is connected with an outlet of the high-temperature plasma cracking module, receives the combustible gas and the solid residues, performs gas-solid separation on the combustible gas and the solid residues, and condenses and recovers the combustible gas; and the tail gas purification module is connected with a gas outlet of the gas-solid separation and condensation module.

The present invention provides a plasma-resistant composite laminate comprising a substrate, a first adhesion layer and a first plasma-resistant layer. The substrate has an upper surface, and the first adhesion layer is disposed between the upper surface of the substrate and the first plasma-resistant layer. An arithmetic average roughness (Ra) of the upper surface of the substrate is from 2 μm to 10 μm, a porosity of the first adhesion layer is from 0.05% to 10%, a porosity of the first plasma-resistant layer is from 0.03% to 6%, and a ratio of the porosity of the first adhesion layer relative to the porosity of the first plasma-resistant layer ranges from 1.6 to 333.33. The plasma-resistant composite laminate described has good performance on adhesion, thereby reducing the incidence of peeling during plasma treatment, and thus prolonging the lifetime of plasma reaction chamber.

The invention discloses a method for degrading a short-chain perfluorinated compound through bio-based amino acid surfactant enhanced low-temperature plasma. In order to solve the problem that the degradation efficiency is limited due to the fact that short-chain perfluorinated compounds (PFAS) are weak in interfacial activity and difficult to enrich, the surfactant composed of a bio-based hydrophobic alkyl chain and an amino acid cation head group is directionally designed and constructed, and the surfactant has the interfacial tropism and the specific electrostatic pairing capacity for the short-chain PFAS. After the agent is added into a water body, the agent can spontaneously form an interface response type self-assembly layer, short-chain PFAS is captured from a bulk phase and migrated to a gas-liquid interface through electrostatic interaction, and accurate enrichment of pollutants in a plasma reaction area is achieved. According to the method, the effective contact probability of the short-chain PFAS and hydration electrons is remarkably improved, the interface mass transfer limitation in the low-temperature plasma treatment process is broken through, and the degradation and defluorination efficiency of the short-chain PFAS is greatly improved on the premise that secondary pollution is not introduced.

The utility model relates to plasma reaction equipment technical field, concretely relates to a kind of injection type low temperature plasma reaction device, including low temperature plasma reactor, multiple placing boxes are equipped in the cavity of low temperature plasma reactor, multiple strip-shaped ports are equipped on the bottom surface of placing box, lifting plate is equipped in strip-shaped port, the end of lifting plate is all downward convex and forms the inclined flow guide portion, the flow guide portion on lifting plate is staggered distribution, the bottom surface of placing box is equipped with push rod that lifting plate is lifted, cavity is equipped with driving mechanism at the end away from opening, and pushing rod is moved synchronously, the inner wall surface between the both sides of placing box and cavity is equipped with positioning guide rail.The utility model structure is simple, placing box can be taken out along the sliding slot, and it is convenient to put and take out product, the lifting operation of product is completed by the continuous alternation between lifting plate, so that the bottom of product can be fully exposed, to ensure the degradation quality subsequently.

A method is disclosed for plasma-based conversion of methane in a plasma reactor, the plasma reactor (1) comprising a reaction chamber and an energy source to create the plasma in the reaction chamber, the reaction chamber being fluidly connected to a separate post-plasma reaction chamber, the plasma reactor comprising a gas inlet, the post-plasma reaction chamber comprising a gas outlet, the method comprising: a) generating a plasma in the reaction chamber by activating the energy source; b) providing a first gas flow comprising a CH4 component through the gas inlet and into the reaction chamber, allowing plasma-based conversion of the CH4 component into gaseous H2 and solid carbon and allowing the continuous removal of produced H2 through the post-plasma reaction chamber and through the gas outlet; c) in consideration of a solid carbon deposit being formed on a predetermined portion of an inner wall of the post-plasma reaction chamber, replacing the first gas flow with a second gas flow, the second gas flow comprising a plasma-activated CO2 component, allowing the oxidation of the deposited carbon, and allowing the continuous removal of produced CO through the gas outlet until the deposited carbon is substantially removed; and associated reactors and reactor systems

The invention discloses a microwave plasma torch based on bias voltage regulation and control. The microwave plasma torch structurally comprises a rectangular waveguide, a quartz tube, two electrode devices and a direct-current power supply. The quartz tube vertically penetrates through the center of the wide side of the rectangular waveguide, the two electrode devices are arranged at the upper end and the lower end of the quartz tube respectively and connected with a direct-current power source, and bias voltage is applied to a plasma reaction area in the quartz tube through the electrode devices. And the voltage generates a direct-current electric field along the axial direction of the quartz tube in the plasma reaction area. According to the microwave plasma torch, adjustable bias voltage is introduced to the two ends of the quartz tube of the microwave plasma torch, and a stable axial direct-current electric field is superposed on the basis of a microwave electric field, so that the movement direction, energy and spatial distribution of charged particles (especially electrons and positive ions) in plasma are effectively controlled; finally, the purposes of regulating and controlling the plasma chemical reaction path, optimizing the treatment uniformity and enhancing the specific reaction selectivity are achieved.

The present invention provides a remote plasma reactor for a semiconductor manufacturing facility, the reactor comprising: a plasma reaction chamber providing a ring-shaped plasma reaction space in which a plasma reaction occurs; and a magnetic core unit coupled to the plasma reaction chamber to surround at least a partial section of the plasma reaction space. Source gases that have passed through a gas inlet are sprayed in a direction away from the center of the plasma reaction space so that the source gases form vortexes in the plasma reaction space.

The application discloses a method for deep boron removal of silicon carbide powder and silicon carbide raw material, which comprises the following steps: placing the silicon carbide raw material in a plasma reaction device, inputting a working gas and applying a plasma power source, and performing low-temperature plasma pretreatment to obtain pretreated silicon carbide raw material; wherein the working gas comprises at least one of inert gas and oxygen; mixing the pretreated silicon carbide raw material with deionized water to obtain a suspension, adjusting the pH to 4-8, adding a functionalized adsorption material for adsorption treatment, and performing solid-liquid separation to obtain silicon carbide powder; wherein the functionalized adsorption material comprises an adsorption material containing hydroxyl and / or amine groups. The application combines low-temperature plasma pretreatment with deep boron removal of the functionalized adsorption material, and synergistically achieves the effect of efficient, low-consumption and environmentally-friendly boron removal. The method has the characteristics of low energy consumption, small pollution and easy mass production, and is suitable for the preparation of low-boron silicon carbide powder for semi-insulating silicon carbide crystal growth.

The invention relates to the technical field of preparation of low-temperature plasma surface modified silicon micro-powder, in particular to a preparation method and application of low-temperature plasma surface modified silicon micro-powder, and the preparation method comprises the following steps: S1, taking original silicon micro-powder, adding ethanol-deionized water mixed liquor, adding a silane coupling agent, tetrabutyl titanate and KH-560, performing temperature-controlled stirring, and then performing centrifugal drying to obtain silicon micro-powder; pre-treated silica powder is obtained; s2, putting the pretreated silica powder into a plasma reaction cavity, introducing argon-oxygen-ethylene mixed gas, spraying a dopamine-graphene quantum dot-chitosan composite liquid, and treating to obtain preliminarily modified silica powder; and S3, adding N, N-dimethylformamide into the preliminarily modified silica powder, adding isocyanate-terminated polyether, hydroxy acrylic resin and maleic anhydride, stirring at a controlled temperature, dropwise adding a catalyst, filtering, washing and drying to obtain the modified silica powder. The method has the advantages of high modification efficiency, low energy consumption, strong stability of the modified layer, capability of customizing the function of the silica powder, adaptation to different resin matrixes, improvement of the performance of the composite material, environment-friendly and controllable process and convenience in industrial production.

A head assembly includes an upper cover assembly disposed above a plasma reaction zone, the upper cover assembly including a top plate and a bottom plate defining a region for containing a cooling fluid therebetween, the bottom plate including one or more openings, one or more plasma modules coupled to the plasma reaction zone through the openings, each of the plasma modules including a microwave source generating a microwave oscillation, a waveguide assembly, and a resonant cavity, the microwave oscillation reacting with a reactant gas, and one or more guide line assemblies configured to direct an effluent from a semiconductor process to the plasma reaction zone.

The application relates to the field of advanced ceramic material preparation technology, and particularly discloses a system and a method for synthesizing composite ceramic nano-powder by using a multi-mode plasma, the system comprising: a plasma reaction unit provided with a cathode head, an anode head and a plurality of spiral micro gas inlets; a gas-solid separation unit; a quenching and collecting unit.The method sends raw materials such as a silicon source, nitrogen and a titanium source into the reaction unit in the form of a gas-solid two-phase flow through the spiral micro gas inlets, fully mixes and reacts in the high-temperature plasma jet generated by the cathode head and the anode head, and obtains silicon carbide, silicon nitride, titanium nitride or composite nano-powder thereof through gas-solid separation, rapid quenching and post-processing.The system has a compact structure, is coupled with the plasma jet through a unique spiral gas inlet mode, realizes high uniform dispersion and high-efficiency synthesis of reactants, and is particularly suitable for preparing high-purity and high-performance titanium-containing composite ceramic powder.

The invention relates to a vortex spinning lyocell coarse yarn and a preparation process thereof, and belongs to the technical field of vortex spinning, the vortex spinning lyocell coarse yarn is prepared by the following steps: pretreating lyocell fibers by using deionized water and a nonionic surfactant to remove impurities such as surface spinning oil and dust, and then treating the pretreated lyocell fibers in a low-temperature and low-pressure plasma environment to obtain the vortex spinning lyocell coarse yarn. The gas in the plasma reaction chamber is oxygen, active groups such as carboxyl and hydroxyl are introduced to the surfaces of the pretreated lyocell fibers, the surface roughness is increased while the mechanical property of the pretreated lyocell fibers is guaranteed, and the mechanical friction force between the fibers is enhanced; the modified lyocell fibers and the polyester staple fibers form hydrogen bonds and covalent bonds with amino groups in dopamine hydrochloride molecules in the forming process of the polydopamine coating, the stability of the coating is improved, in addition, the cohesive force between the modified lyocell fibers and the polyester staple fibers is further increased due to the viscosity of the polydopamine coating, and the tensile strength of the polyester staple fibers is improved. The mechanical strength and durability of the vortex spinning lyocell coarse yarn are synergistically improved.

The utility model discloses a microwave plasma reaction system, including: frame, microwave resonance cavity, assembles on the frame, microwave source device, assembles to the microwave resonance cavity outer wall, is used for to microwave resonance cavity inside microwave feed -in, quartz tube, from top to bottom through microwave resonance cavity setting, it has the reaction section in microwave resonance cavity, gas inlet component, with one end of quartz tube intercommunication, is used for the gas into, assembly spare, be located in the quartz tube, along the axial direction of quartz tube and extend to the reaction section, needle body, be located in the reaction section, perpendicular the axial arrangement of quartz tube, set up a plurality of, a plurality of needle body assembly spare is arranged along the axial direction of quartz tube and arranges, blanking component, with another end of quartz tube intercommunication, is used for discharging processing material, the microwave plasma reaction system that the utility model proposes, through microwave energy to gas ionization, can high -efficient production plasma, to material processing effect is good.

The utility model provides a sterilization and deodorization device which comprises a power supply part and a plasma reaction part, the power supply part is electrically connected with the plasma reaction part, and the power supply part is used for supplying power to the plasma reaction part; the plasma reaction component comprises a dielectric barrier, a high-voltage pole piece and a low-voltage pole piece, a containing cavity matched with the high-voltage pole piece is formed in the dielectric barrier, the high-voltage pole piece is arranged in the containing cavity, and the dielectric barrier and the high-voltage pole piece are integrally formed; the power supply end of the power supply component penetrates through the dielectric barrier through a first wire and is connected with the input end of the high-voltage pole piece; the low-voltage pole piece is sleeved on the dielectric barrier piece, and one side, close to the dielectric barrier piece, of the low-voltage pole piece is attached to the dielectric barrier piece. The sterilization and deodorization device has the technical advantages of being simple and small in structure, low in discharge voltage, convenient to assemble and maintain, ultralow in released ozone, high in plasma density, high in sterilization efficiency and wide in application range.

This invention belongs to the field of titanium nitride tungsten oxide composite films, and specifically relates to a method for preparing titanium nitride powder, titanium nitride tungsten oxide composites, and their composite films. A method for preparing titanium nitride powder includes the following steps: titanium tetrachloride is mixed with ethanol, nanocellulose, polyvinylpyrrolidone, tetrabutyl titanate, and ethanol; the mixture is heated and calcined; the calcined material is collected, ground, and placed in a plasma reaction vessel; after plasma arc discharge treatment, it is naturally cooled and then ball-milled to obtain titanium nitride powder. This application optimizes powder performance through component synergy and process integration. Simultaneously, it introduces tetrabutyl titanate, nanocellulose, and polyvinylpyrrolidone to construct a composite system, utilizing coordination and doping effects to regulate the microstructure of the powder from the source, effectively improving the dispersion stability and activity of the titanium nitride powder, laying a high-quality raw material foundation for the subsequent preparation of composites and composite films.

The present inventive concept relates to a device for treating an exhaust gas, and more particularly, to a plasma device capable of, even when connected to a vacuum pump, extending a lifetime of an electrode of a plasma torch. In the plasma device according to the present inventive concept, since an orifice is installed in a connection unit for connection with a vacuum pump to prevent a decrease in pressure of the vacuum pump, a pressure of a plasma reaction unit including the plasma torch of the plasma device can be maintained similar to normal pressure, thereby reducing the wear of a tungsten electrode in the plasma torch to extend a lifetime of the electrode.

The invention discloses a process for strengthening flotation of cuprite through nitrogen plasma surface reconstruction, which comprises the following steps of: crushing high-calcium and high-silicon cuprite, performing dry ball milling, and screening to obtain cuprite powder; the cuprite powder is evenly placed in a plasma reaction chamber, nitrogen is introduced, and high-activity nitrogen plasma selectively acts on the surface of cuprite; pulp mixing and sulfuration treatment: adding ultrapure water into the cuprite powder, uniformly stirring, then adjusting the pH value of the pulp, and then carrying out sulfuration treatment; and flotation separation and product collection are conducted, specifically, a collecting agent and a foaming agent are sequentially added into the cuprite ore pulp, flotation operation is conducted, and efficient separation of cuprite and gangue minerals is achieved. According to the method, selective surface reconstruction is conducted on the cuprite powder through the nitrogen plasma, the floatability difference between the cuprite and gangue minerals is enlarged, targeted strengthening of the vulcanization reaction activity and the adsorption capacity of the collecting agent is achieved, and the cuprite vulcanization flotation recovery rate and the concentrate Cu grade are improved.

The application provides a diamond vapor deposition device using carbon dioxide as a carbon source, and relates to the technical field of diamond vapor deposition. The device comprises a microwave system for generating microwaves, and a plasma reaction cavity comprising a cavity and a liftable substrate table. A vertically extending hollow cylinder is arranged in the middle of the cavity, the axis of the hollow cylinder is opposite to the substrate table, the top of the hollow cylinder is connected to the inner side wall of the cavity through a first flat plate, a plurality of first through holes are arranged on the first flat plate, the first through holes are connected to an air outlet through a pipeline, a boss is arranged below the substrate table, the boss is attached to the inner wall of the hollow cylinder during the lifting of the substrate table, and isolation is formed, and a connecting mechanism for maintaining the height of the boss is arranged between the boss and the first flat plate. The cavity is isolated into two parts, the reaction gas, i.e. carbon dioxide, is prevented from entering the position below the substrate table, and the limitation of the overlapping area is eliminated.

The invention discloses a method and system for optimizing two-dimensional argon plasma uniformity by introducing a high-energy particle source, and the method comprises the steps: S1, filling a plasma reaction chamber with background gas, and simulating the distribution of neutral particles; s2, initializing the speed and the position of charged particles in the gas in the chamber, enabling the charged particles to be uniformly distributed in the chamber, and determining the intensity, the time sequence, the incident direction and the incident position of high-energy particles emitted by an external particle source; s3, calculation of charged particle density, potential and electric field; s4, calculating the force acting on the charged particles; s5, moving the charged particles; s6, checking and executing collision; and S7, repeating the steps S3 to S6, adjusting the high-energy particle injection time sequence until a steady state is reached, and obtaining the data distribution of the charged particles. Through controllable interaction between an external particle source and plasma or background gas, seed electrons-ions are actively generated in a specific space area or energy distribution is changed, and inherent space non-uniformity of the plasma is compensated.

The invention discloses preparation of a metal organic framework catalytic material and application of the metal organic framework catalytic material in radiation activation CO2 catalytic reduction. The preparation comprises the following steps: synthesizing a metal organic framework UiO-66; the phosphomolybdic acid is loaded on the metal organic framework UiO-66 to obtain the metal organic framework catalytic material. Aiming at the problem of low CO2 conversion rate in a plasma-driven CO2 and H2O reaction system, the metal organic framework catalytic material is successfully prepared, and activation and conversion of CO2 are effectively enhanced. Under normal-temperature and normal-pressure plasma reaction conditions, the phosphomolybdic acid / UiO-66 catalytic system realizes 17.78% of CO2 conversion rate which is increased by about 3 times compared with an unmodified material system and is about 6 times of that of a control group only using plasma, the key effect of a hydrogen bond microenvironment is further proved, the quenching effect of gas-phase water molecules on the plasma-induced CO2 dissociation process is effectively inhibited, and the CO2 dissociation efficiency is improved. And the free energy barrier of reducing CO2 into * COOH is reduced, so that the reaction kinetics of converting CO2 into CO is accelerated.

The invention discloses a self-separation ammonia synthesis system and method based on plasma coupling electrochemistry, and belongs to the technical field of ammonia synthesis. The invention designs a system and a method for realizing self-separation ammonia synthesis by coupling integrated plasma with electrochemistry, and the ammonia synthesis system disclosed by the invention has the advantages that high-temperature reaction heat generated in a plasma reaction area is directionally conducted to an electrochemical reaction area through a heat conduction structure by virtue of a highly integrated reactor body with an annular columnar laminated structure; the heat energy is utilized, on one hand, the electrochemical reduction reaction rate is effectively increased, on the other hand, the evaporation rate of ammonia in electrolyte is increased, in-situ efficient separation of ammonia products is facilitated, and the purpose of efficient and energy-saving integrated ammonia preparation is achieved.

The invention discloses a powder motion control method and system for processing graphite through a single plasma source, and relates to the technical field of plasma material processing, in particular to the powder motion control method and system for processing graphite through the single plasma source. According to the method, a plurality of rows of high-pressure inert gas injection small holes are introduced into a single plasma reaction chamber and located in the axial upstream and downstream of a powder feeding nozzle, and a controlled auxiliary flow field is formed in a reaction area by adjusting the pressure and the injection direction of the gas. The flow field can enhance the penetration depth of the graphite powder in a plasma high-temperature area, effectively prolong the high-temperature retention time of the graphite powder and remarkably improve the distribution uniformity of the powder in airflow, so that the treatment effect is improved. The device comprises a plasma source, a cylindrical reaction chamber, a powder feeding nozzle with a special structure and high-pressure gas injection small holes with adjustable angles and arrangement, and has the characteristics of reasonable structure, flexibility in control and capability of remarkably improving the graphite treatment quality.