21 results about "Nitrogen monooxide" patented technology

The application discloses a preparation method of a copper-tin alloy catalyst and application of the copper-tin alloy catalyst in ammonia synthesis. A three-electrode system is adopted, a certain mass of copper salt and tin salt is dissolved in water, an acid solution with a certain concentration is added and is continuously stirred, a certain current density is applied at a cathode, and finally the electrodeposited catalyst is filtered and dried to obtain a dendritic nano Cu6Sn5 alloy catalyst. The application is used for electrocatalytic reduction of nitrogen monoxide to synthesize ammonia, the NH3 Faraday efficiency reaches more than 95% in a flow phase electrolytic cell, the highest current density reaches 1 A cm ‑2 , and the ammonia production rate is about 8 mmol cm ‑2 h ‑1 ; in a membrane electrode electrolyzer, the highest current density reaches 4 A cm ‑2 , and the ammonia production rate is 24.4 mmol cm ‑2 h ‑1 .

The present invention relates to a method for removing nitric oxide, nitrogen dioxide, and nitrous oxide from an exhaust gas stream obtained during nitration, the method comprising: (a) removing nitric oxide and nitrogen dioxide from the exhaust gas stream by adding an oxygen-containing gas to the exhaust gas stream to oxidize the nitric oxide in the gas stream to form nitrogen dioxide, thereby obtaining a nitric oxide-deficient gas stream; (b) washing the nitric oxide-deficient gas stream with water to obtain a nitric oxide- and nitrogen dioxide-deficient gas stream; and (c) converting the nitrous oxide in the nitric oxide- and nitrogen dioxide-deficient gas stream into nitrogen and carbon dioxide, and optionally oxygen, in the presence of a nitrous oxide reduction catalyst and in the presence of hydrogen cyanide.

The invention discloses a method for circularly absorbing nitric oxide in flue gas of an industrial furnace through potassium manganate. The method comprises the following steps: introducing NO-containing flue gas into a mixed solution of KOH and K2MnO4 for absorption, and converting NO into nitrate by using Mn (II) complexation and K2MnO4 oxidation; filtering the absorption tail liquid to obtain MnO2, and crystallizing the filtrate to obtain sylvite; mnO2 and sylvite are fused, oxygen is introduced, K2MnO4 is regenerated, and K2MnO4 is recycled; nOx generated in the regeneration process returns to the hearth and is reduced into N2. According to the method, an absorption-oxidation-regeneration-reduction closed-loop system is formed, the technical problems of low NO mass transfer efficiency, high oxidant / complexing agent consumption, high operation cost, secondary pollution and the like in the existing denitration technology are solved, efficient removal (the efficiency is greater than 95%) and resource circulation of NOx are realized, and the method has the advantages of low cost and no secondary pollution.

A semiconductor device and a manufacturing method thereof, the method comprising: providing a substrate, depositing an aluminum film on the substrate; performing nitrogen monoxide plasma treatment on a surface of the aluminum film to form an aluminum oxide protective layer on the surface of the aluminum film; and performing a patterning process on the aluminum film after forming the aluminum oxide protective layer. By performing N2O plasma treatment on the surface of the aluminum film after deposition and before photolithography development, an aluminum oxide protective layer is formed on the surface of the aluminum film, thereby avoiding metal residue caused by residual developer.

A method for simultaneously removing nitric oxide and sulfur dioxide, belonging to the field of air pollution control technology, is characterized by introducing the gas stream to be treated into a reactor, simultaneously introducing an absorbent into the reactor. Sulfur dioxide in the gas stream undergoes a redox reaction with ferric chloride in the absorbent, causing the sulfur dioxide to be oxidized to sulfate ions, which are then absorbed by the absorbent. Nitric oxide gas in the gas stream reacts chemically with solid ferric chloride crystals in the ferric chloride slurry of the absorbent and is absorbed. The absorbent, after saturation, is regenerated and recycled. This method can also remove harmful gases such as carbon disulfide, carbon oxysulfide, and hydrogen sulfide from the gas stream separately.

The utility model relates to tail gas treatment equipment technical field discloses a nitrogen monoxide production tail gas treatment device, including spray tower and absorption tower, absorption tower is located one side of spray tower, one side below of spray tower is connected with the air inlet pipe, the inside assembly of spray tower has and links to each other the circulating assembly of spray assembly, circulating pump will collect liquid tank absorption liquid delivery to the storage ring, atomizes and sprays through annular spray head, the gas to be treated enters from the air inlet pipe, forms the cyclone through the cyclone vane in the flow guide box, makes the gas -liquid contact time extension, turbulent mixing enhances the mass transfer efficiency, makes the pollutant and absorption liquid fully contact and is absorbed efficiently, absorption liquid falls back to the collection liquid tank and is recycled, when spray tower runs, the absorption liquid after spraying is initially filtered through the dust sieve hole of flow guide box bottom surface, then is refined and filtered through the impurity filter board, after flowing into the collection liquid tank, is cooled by the condensing coil, finally is pumped back for use through the circulating pump, realizes absorption liquid recycling.

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of cryoablation system, including gas source, heat exchange capillary and evaporator, wherein, gas source medium is the nitrogen monoxide containing moisture, cryoablation system includes drying filter;The drying filter has air inlet and air outlet, the air inlet is connected with the gas source, and the air outlet is connected with the heat exchange capillary;The heat exchange capillary exchanges heat with the evaporator;The drying filter is filled with drying material that can absorb water molecules in gas source medium and is suitable for nitrogen monoxide molecule free passage, to remove the moisture in gas source medium that passes through drying filter.The utility model is by additionally providing drying filter, effectively reduce the risk that pipeline occurs blockage, improve balloon temperature and air inlet pressure curve smooth, be conducive to the judgment of operator, ensure the stability of operation.

The present invention comprises: a thermal decomposition unit (2) for thermally decomposing a nitrogen component in a sample so as to generate a sample gas that contains nitrogen monoxide; a reaction unit (4) which includes a reaction space (12) for reacting the nitrogen monoxide in the sample gas generated by the thermal decomposition unit (2) with an ozone gas so as to generate light, a sample gas introduction flow path (14) for introducing the sample gas into the reaction space (12), an ozone gas introduction flow path (16) for introducing the ozone gas into the reaction space (12), and window (18) for transmitting and guiding the light generated in the reaction space (12) to the outside; and an optical sensor (8) for detecting the light transmitted through the window (18). The ozone gas introduction flow path (16) of the reaction unit (4) is provided so as to form a flow of the ozone gas along the window (18) in a vicinity region (A) of the window (18) by introducing the ozone gas toward the vicinity region (A).

The invention discloses a PtCu cluster hypoxic radiotherapy sensitizer capable of controllably releasing nitric oxide, and belongs to the crossing field of nanomaterial chemistry and biochemistry. According to the invention, 4-nitro-1-(propargyl)-1H-imidazole with good biocompatibility is used as a protective ligand, and the nanocluster with accurate atomic size is synthesized by a room temperature volatilization one-pot method. The chemical formula of the nanocluster is [Pt4Cu8 (C6H4N3O2) 8 (C26H24P2) 4Cl4] (PtCl6) (PF6) 2 (abbreviated as Pt4Cu8), the nanocluster belongs to a monoclinic system, and the space group is P21 / n. The nano-alloy cluster has a small size (-2 nm) and good dispersibility, the material can controllably release nitric oxide under excitation of X rays, and the sensitization effect of radiotherapy is remarkably enhanced by improving a tumor hypoxic microenvironment, so that tumor cells are efficiently killed.

Title of the Invention: Pulsed-Mode Nitric Oxide Gas Delivery Apparatus. The invention relates to a NO delivery apparatus (1) comprising a main gas circuit (40; 40.1, 40.2) with flow control means (42, 43) including at least one main solenoid valve (42), and a bypass circuit (41) connecting (140, 141) to the main gas circuit (40; 40.1, 40.2) by bypassing the flow control means (42, 43). Secondary flow control means (45, 46) including at least one on / off secondary solenoid valve (45) are arranged on the bypass circuit (41). A fixed-flow device (46) is arranged on the bypass circuit (41). Control means (50) control the secondary solenoid valve (45) in pulsed mode to alternately switch it between open and closed positions so as to produce a NO / N2 mixture in the form of successive gaseous pulses having a pulse time (di) of non-zero duration.Installation for supplying NO (10) to a patient including the device (1). Figure of the abstract: Figure 2.

An apparatus for producing ammonia using electric discharge of water according to an embodiment of the present invention includes a plasma decomposition reaction part configured to produce hydrogen (H2) and oxygen (O2) from water by supplying the water to plasma generated by using nitrogen gas (N2) as electric discharge gas and produce nitrogen monoxide (NO) and nitrogen dioxide (NO2) by allowing oxygen (O2) to react with nitrogen (N2), a thermal decomposition reaction part connected to a lower side of the plasma decomposition reaction part and configured to produce solid carbon and hydrogen (H2) by decomposing water and hydrocarbon by further supplying hydrocarbon or hydrogen to an additional supply port, and a synthetic catalyst part connected to the thermal decomposition reaction part and configured to produce ammonia (NH3) by synthesizing hydrogen (H2) and nitrogen monoxide (NO) separated from water.

The invention discloses a high-sensitivity detection system and method for measuring nitrogen oxide in atmosphere, and relates to the technical field of atmosphere detection. The system comprises a laser generation module, a sampling and gas processing module and a fluorescence detection and data processing module, the laser generation module generates ultraviolet laser for exciting nitric oxide fluorescence, after to-be-detected atmosphere or sample gas provided by a standard gas cylinder is subjected to flow proportioning and control, a first path of gas enters the NO detection cavity, a second path of gas enters the NOx detection cavity after being subjected to photolysis conversion through the LED photolysis converter, the ultraviolet laser sequentially penetrates through the NOx detection cavity and the NO detection cavity, and the NOx detection cavity and the NO detection cavity are communicated with the NOx detection cavity. A fluorescence collection system is arranged in each detection cavity, the laser energy meter monitors the energy of laser penetrating through the two detection cavities in real time, and online monitoring of the concentration of NO and NO2 is achieved according to the fluorescence signal intensity and the laser energy. The system has the characteristics of compact structure, high optical path stability and high detection precision.

A desorption method of a nitrogen oxide adsorbent belongs to the technical field of air pollution control and environmental protection, and is characterized by comprising two processes of desorption of the adsorbent and treatment of mixed gas after desorption, wherein in the desorption process, at least one of water vapor, ammonia gas or carbon dioxide gas is adopted as desorption regeneration gas to desorb and regenerate the adsorbent after adsorption saturation, and the desorbed mixed gas flow passes through a desorbed mixed gas treatment system to remove moisture, ammonia gas or carbon dioxide and gas contained in the gas flow; the high-concentration nitric oxide gas is obtained, and the regeneration of the adsorbent and the recovery of the nitric oxide gas are realized.

The present invention generally relates to systems and methods for administering therapeutic gas to patients in need thereof by receiving breathing gas from a high-frequency ventilator by at least measuring the flow of an enhanced therapeutic gas (e.g., nitric oxide, NO, etc.). At least some of these enhanced therapeutic gas flow measurements can be used to address an unexpected event that may sometimes occur when a sidestream therapeutic gas flow is mixed with breathing gas received by a patient from a breathing circuit associated with a high-frequency ventilator.By using at least some of these enhanced therapeutic gas flow measurements, the dose of side-flow therapeutic gas mixed into the breathing gas received by the patient may be at least more accurate and / or under-delivery of therapeutic gas in the breathing gas may be avoided and / or reduced.

A method of reducing nitrogen monoxide and / or nitrogen dioxide emissions produced when a diesel engine combusts a diesel fuel composition, the method comprising metering at least one nitrogen-containing cleaning agent as an additive to the diesel fuel composition.

A method of increasing growth of a plant, the method comprising applying a titanium dioxide photocatalyst to a surface of the plant, and converting nitrogen monoxide or nitrogen dioxide to nitrate on the surface of the plant.

The application belongs to the technical field of spacecraft propulsion, and specifically discloses a nitrogen monoxide-based cold composite high-mobility honeycomb star propulsion system, which comprises at least one nitrogen monoxide gas cylinder and at least one propane gas cylinder, the outlet of the nitrogen monoxide gas cylinder is connected to the nitrogen monoxide inlets of a single-element thruster, a cold gas thruster and a premixing cavity through a first pressure-reducing valve, the outlet of the propane gas cylinder is connected to the propane inlet of the premixing cavity through a second pressure-reducing valve, the outlets of the first pressure-reducing valve and the second pressure-reducing valve are connected to the premixing cavity, the outlet of the premixing cavity is connected to a double-element thruster, and the double-element thruster is provided with only one air inlet pipe. The application connects three kinds of thrusters in parallel through the same pressure-reducing gas source, supplies the double-element thruster with premixed single-pipe, and cooperates with nitrogen monoxide self-pressurized gas supply, so that the system structure is compact, the power consumption is low, high-precision attitude control and large-thrust orbit control are considered, and the mobility of the honeycomb star is improved.

The application belongs to the field of waste gas denitration treatment technology, and specifically discloses a device and method for making denitration catalysts to undergo rapid SCR reaction. The device comprises a NO oxidation device, a switch and an NH3-SCR reaction device arranged in sequence. The NO oxidation device comprises a Pt / CeO2 catalyst, and the NH3-SCR reaction device comprises a Cu / HZSM-5 molecular sieve denitration catalyst. The device further comprises a first heating device (for heating the NO oxidation device) and a second heating device (for heating the NH3-SCR reaction device). The second heating device is a microwave heating device. The device can realize the oxidation of part of NO into NO2 through the NO oxidation device, promote the rapid SCR reaction of the catalyst surface of the subsequent NH3-SCR reaction device, and thus realize the efficient catalytic reduction of nitrogen monoxide under high air speed and low temperature conditions.

Methods of depositing silicon-containing films by plasma-enhanced atomic layer deposition (PEALD) are disclosed. Exemplary methods include exposing a substrate in a processing system to a silicon-containing precursor; exposing the substrate to a nitrogen-containing reactant; exposing the substrate to a first plasma including one or more of nitrogen (N2) or hydrogen (H2), and one or more of argon (Ar) or helium (He); and exposing the substrate to a second plasma including one or more of nitrogen (N2), argon (Ar), helium (He), oxygen (O2), nitrous oxide (N2O), or carbon dioxide (CO2).

The invention relates to the technical field of molecular sieves, and discloses a short-cylinder-like ERI structure molecular sieve, a preparation method and application thereof, and a method for catalytic reduction of nitric oxide by ammonia gas, the microstructure of the molecular sieve is a short-cylinder-like shape formed by ordered aggregation of short-rod small crystal grains, and the ratio of the diameter to the thickness of the short-cylinder-like shape is not less than 3; the size of the short-rod small crystal grains in at least one dimension is less than 0.4 [mu] m. The molecular sieve is small in grain size, pure in crystal phase, good in diffusion performance and high in low-temperature activity, and is particularly suitable for being used as a gas adsorption separating agent or a catalyst component to be applied to carbon dioxide adsorption separation, synthesis gas, olefin preparation through methanol conversion, ammonia gas catalytic reduction of nitric oxide and other reactions; the catalyst is especially suitable for being used as a catalyst to be applied to ammonia gas catalytic reduction of nitric oxide, and the conversion rate of NO after reaction is high under the low-temperature condition.