142 results about "Nitrogen oxide" patented technology

The invention relates to the field of phosphorus-nitrogen flame retardants, and discloses a preparation method and application of a novel phosphorus-containing nitrogen oxide flame retardant, the preparation method comprises the following steps: S1, under the protection of nitrogen, dissolving diphenylphosphinyl hydroxylamine and triethylamine in a tetrahydrofuran solvent to prepare a reaction substrate solution; s2, slowly dropwise adding a diphenylphosphinyl chloride solution into the solution, and then sufficiently carrying out the reaction in a staged heating and heating reflux mode; s3, cooling and filtering to remove solid byproducts generated by reaction, and concentrating filtrate to obtain a crude product solid; and S4, recrystallizing and purifying the crude product by using ethyl acetate, and finally heating and drying the obtained crystal under a vacuum condition to obtain the product. An N-O group is innovatively introduced into the molecular structure of the flame retardant, so that the effect of efficiently capturing gas-phase free radicals in cooperation with a phosphorus-containing group is achieved, and the substantive technical progress that the material can be endowed with excellent flame retardant property with extremely low addition amount is realized.

The invention relates to the technical field of chemical plant smoke filtering, in particular to a chemical plant discharge filtering device with a monitoring function, which comprises a barrel, a gas inlet pipe, a gas outlet pipe and the like, the barrel is communicated with the gas inlet pipe, and the top of the barrel is communicated with the gas outlet pipe. Indexes of pollutants such as sulfur dioxide, nitric oxide, carbon monoxide and carbon dioxide in flue gas can be detected through the flue gas sensor, when the flue gas sensor detects that the pollutants in the flue gas exceed the standard, the controller can control an electric guide rail to work, the electric guide rail drives a first push plate to move forwards, and a first sealing plate can also move forwards; the first sealing plate seals the exhaust pipe, real-time response can be achieved after the filter element is aged and breaks down, the filter element is replaced without shutdown under the condition that it is ensured that smoke does not leak, smoke which is not completely purified is prevented from being exhausted out, and therefore pollution to the environment can be avoided.

Aiming at the problems of large flue gas nitrogen oxide generation amount, easy exceeding and serious pollution possibly existing in ammonia gas blending combustion, the invention provides an ammonia gas out-of-furnace bypass combustion blending combustion oxidation method, which comprises the following steps: preparing NO2 by virtue of an ammonia combustion system, generating O.free radicals by virtue of photo-thermal cracking of NO2, oxidizing NO in flue gas into NO2, cracking NO2 into N2, removing NO by virtue of NO2, and performing denitration by virtue of denitration, so that the nitrogen oxide in the flue gas is not easily generated. According to the method, SO2 is oxidized into SO3 through O.free radicals, the SO3 reacts with calcium for desulfurization, CO and VOCs are oxidized into CO2 and H2O, collaborative purification of multiple pollutants is achieved, reduction denitration and wet desulfurization are replaced and used for denitration and desulfurization of combustion flue gas and collaborative treatment of the multiple pollutants, and deep pollution reduction, carbon reduction, energy conservation and efficiency improvement are achieved.

The present application relates to a kind of carbon monoxide sensor with resistance to multiple gas and detection method, belong to coal mine environment gas detection sensor field.The present application includes carbon monoxide sensor, and the method of gas detection of the sensor.Therein, sensor mainly includes carbon monoxide / hydrogen sulfide dual gas detection module, nitrogen oxide detection module, modular mainboard, main shell and main shell display window, wherein carbon monoxide / hydrogen sulfide dual gas detection module and nitrogen oxide detection module measure the gas to be measured.The present application carries out gas concentration value calculation using cross interference compensation algorithm, and the concentration of carbon monoxide gas in coal mine environment is accurately detected by setting different working modes.The present application realizes the real-time monitoring of carbon monoxide, nitrogen oxide and hydrogen sulfide multi-component gas concentration by carbon monoxide, nitrogen oxide, hydrogen sulfide composite electrochemical element design, improves the precise perception ability of intelligent mine, and guarantees coal mine safety production.

The invention relates to the field of nitrogen oxide treatment, and particularly provides preparation and application of a Fe-Mn / NbOPO4 catalyst for improving water resistance and sulfur resistance of NH3-SCR (selective catalytic reduction) reaction. The preparation method comprises the following steps: 1, preparation of an NbOPO4 carrier: mixing and stirring a niobium source and a phosphorus source, dropwise adding ammonia water, filtering and washing to obtain a precipitate, further adding a CTAB / H2O solution, adjusting the pH value with H3PO4, carrying out hydrothermal aging in a reaction kettle, and finally filtering, washing, drying and calcining; and 2, loading Fe and Mn active components, dissolving an iron source and a manganese source in water by adopting a wet impregnation method, adding the NbOPO4 carrier, stirring, carrying out rotary evaporation, drying and calcining. When the air speed is 60000mL. G <-1 >. H <-1 >, the NOx conversion rate in the temperature range of 75-297 DEG C reaches 90% or above, and in a water-resistant and sulfur-resistant performance test of 5vol.% H2O and 100ppm SO2, the reaction activity is almost not obviously reduced. The SCR reaction temperature window of the manganese-based catalyst is widened, the water resistance and sulfur resistance of the manganese-based catalyst are effectively improved, and the manganese-based catalyst has wide application prospects.

Provided herein are methods of depositing molybdenum (Mo) films. The methods involve depositing a thin layer of a molybdenum (Mo)-containing film such a molybdenum oxide, a molybdenum nitride, or a molybdenum oxynitride. The Mo-containing film is then converted to an elemental Mo film. A bulk Mo film may then be deposited on the elemental Mo film. In some embodiments, the process is performed at relatively low temperatures.

The invention relates to the technical field of flue gas multi-pollutant synergistic purification, in particular to a preparation method of an ultralow-temperature denitration and decarbonization catalyst and application of the ultralow-temperature denitration and decarbonization catalyst to synchronous removal of nitrogen oxides and carbon monoxide in industrial flue gas. The catalyst is prepared by a two-step method comprising the following steps: S1, dispersing a cerium source and a platinum source in absolute ethyl alcohol, and synthesizing a Pt / CeO2 monatomic catalyst by a hydrogen combustion method; s2, compounding an iron source and Pt / CeO2 through a coprecipitation method, drying and calcining in a nitrogen atmosphere to obtain the Fe-Pt / CeO2 composite catalyst. The key process parameters comprise hydrogen / oxygen flow velocity, calcination temperature and mass ratio of the iron source to the carrier. The synergistic removal efficiency of the catalyst on NOx and CO at the ultralow temperature of 50-120 DEG C reaches 85% or above, and the bottleneck that the low-temperature activity of a traditional catalyst is insufficient is broken through; sulfur resistance and water resistance are remarkably improved through the porous structure and the oxygen storage capacity of CeO2, and the activity retention rate is larger than 90% when SO2 and H2O are contained; the device is suitable for high-efficiency purification of complex flue gas of steel, waste incineration and the like, and meets the policy requirements of pollution reduction, carbon reduction and synergistic interaction.

The present application belongs to the field of denitration agent preparation, and provides a selective non-catalytic reduction denitration agent and a preparation method thereof. First, urea is heat treated to change hydrogen bond strength and intermolecular force in the crystal, and increase thermal motion of urea molecules, so as to cause loose arrangement between molecules, increase exposure of reaction sites, and increase contact area of molecules, thereby increasing reaction rate. A phosphoric acid group is introduced into the urea after heat treatment, and phosphonated urea is formed through chemical reaction, so as to improve adsorption and reaction activity of the urea. This process helps to enhance the combination ability of urea and NOx, thereby improving the denitration efficiency. Appropriate amounts of sodium carbonate, sodium chloride and hydroxyl iron oxide are added to the reaction system, which helps to promote the activity improvement of the denitration agent, and can effectively deal with nitrogen oxide pollution in industrial waste gas.

The utility model discloses a reaction device for normal-pressure leaching of nitric acid, which is characterized in that in the reaction process, nitric oxide in a reaction kettle enters an absorption tower through a nitric oxide exhaust outlet, a first pipeline and a nitric oxide gas inlet, and an oxygen supply device supplies oxygen to the absorption tower; an absorption liquid circulating pump I conveys an absorbent in the absorption tower circulating device to an absorbent circulating inlet I and enters the absorption tower, the absorbent absorbs nitric oxide gas to form nitric acid, nitric oxide released in the process reacts with oxygen to generate nitrogen dioxide, and the nitrogen dioxide reacts with the absorbent to generate nitric acid; according to the device, nitrogen oxide gas generated in the reaction process can be absorbed, the obtained absorption acid (nitric acid) can be cyclically applied to the leaching reaction, and tail gas can be discharged after reaching the standard. And the method is environment-friendly.

The invention relates to a silver-nitrate recovery method comprising the process steps of preparing a nitric-acid solution in a reactor tank and feeding silver sludge into the prepared acid solution to obtain an intermediate product. The silver-nitrate recovery method further comprises introducing N2 onto the intermediate product, sweeping the resulting NOx gases with the introduced N2 and reacting them with H2O2 so as to eliminate them, and collecting the silver nitrate formed in a vessel.

The invention discloses a cobalt-based catalyst for producing ammonia through catalytic oxidation of nitrous oxide and nitric oxide as well as a preparation method and application of the cobalt-based catalyst, and belongs to the technical field of catalysts and environmental pollution. The preparation method of the cobalt-based catalyst comprises the following steps: (1) mixing a cobalt source, a carbon-containing nitrogen compound, a precipitator and a solvent for reaction to obtain a precursor solution; (2) putting the precursor solution into a high-pressure reaction kettle for hydrothermal reaction to obtain a solid, namely a precursor; and (3) performing pyrolysis treatment on the precursor in an inert atmosphere to obtain the cobalt-based catalyst. The cobalt-based catalyst prepared by the invention is applied to electrocatalytic conversion from N2O to NH3 for the first time, and shows excellent catalytic activity.

To provide a memory device having a switching element with excellent characteristics. [Solution] The memory device of the embodiment includes a memory cell comprising: a first conductive layer; a second conductive layer; a third conductive layer between the first and second conductive layers; a switching layer between the first and third conductive layers; and a resistive switching layer between the third and second conductive layers. The switching layer comprises an oxide, nitride, or oxynitride of a first element selected from the group consisting of Al, Si, Ge, Zr, Y, Ta, La, Ce, Ti, Hf, and Mg; a second element, different from the first element, selected from the group consisting of Al, Zn, Sn, Ga, and In; and a third element selected from the group consisting of Te, S, Se, and Sb. The switching layer includes a first region and a second region, wherein the sum of the atomic concentrations of the second element and the third element in the first region is greater than the sum of the atomic concentrations of the second element and the third element in the second region.

The invention belongs to the technical field of adsorption materials, and particularly relates to a hydroxyl-free lead dioxide-based nitric oxide absorbent and a preparation method thereof. The method comprises the following steps: preparing a mixed solution of perchloric acid and lead perchlorate, standing to form a saturated solution, and performing electrodeposition by using the saturated solution as an electrolyte to obtain a lead dioxide deposition layer; and cleaning, drying and crushing the sediments, drying the sediments in an air dry oven with an air exchange function, and calcining the sediments at high temperature to form a target product. The obtained absorbent has the characteristics of hydroxyl-free structure, nanoscale particle size, high porosity, excellent adsorption performance and the like. Test results show that the absorbent has good selective adsorption capacity on NO2, and the adsorption efficiency can reach 85% or above. The material is suitable for nitrogen oxide interference absorption in the determination process of the hydrocarbon content in coal, and has important application value.

The present application belongs to the technical field of inorganic material synthesis, and provides an octahedral nano magnesium oxide, a preparation method and application thereof. The preparation raw materials (hydrated magnesium salt and a precipitating agent (including one or more of urea, hexamethylenetetramine and ethanolamine)) are heated at 25-95 DEG C to obtain a reaction liquid, the reaction liquid is subjected to hydrothermal reaction, the obtained gel intermediate is directly calcined to obtain the octahedral nano magnesium oxide. The present application strictly controls the ratio of water to magnesium in the reaction liquid to be ≤130 mL:1 mol, and the one-dimensional nano structure intermediate product can be obtained through hydrothermal reaction; the one-dimensional nano structure intermediate product is calcined to form the octahedral structure [(100) crystal surface] with the lowest energy and the most stable structure; the precipitating agent forms ammonium radical in the hydrothermal reaction, the ammonium radical escapes in the form of nitrogen oxide or ammonia gas, which enriches the pore structure of the octahedral nano magnesium oxide and improves the specific surface area thereof.

This invention discloses an integrated treatment method for desulfurization, denitrification, and waste heat recovery of coke oven flue gas, belonging to the field of coke oven flue gas treatment technology. The method includes: 1) flue gas pretreatment and high-temperature waste heat recovery; 2) directional oxidation conversion of nitrogen oxides and removal of residual oxidants; 3) synergistic desulfurization and denitrification treatment with activated carbon / activated coke; 4) side reaction suppression and control; 5) low-temperature waste heat recovery and reheat utilization; and 6) activated carbon / activated coke regeneration and sulfur resource recovery. This invention converts NO in flue gas into high-valence NO₂ through a pre-oxidation reaction, improving the kinetics of the denitrification reaction, increasing denitrification efficiency, and reducing ammonia consumption. By controlling the SO₂ concentration and acid gas content at the desulfurization layer outlet, it effectively inhibits the deposition of ammonium salts such as (NH₄)₂SO₄ and NH₄Cl, reducing bed blockage. Through high and low temperature staged waste heat recovery, it achieves tiered utilization of heat, improving the overall thermal efficiency of the system. This achieves synergistic optimization of efficient pollutant removal and efficient energy utilization.

This invention discloses a room-temperature phase pyroelectric material and its preparation method, relating to the field of pyroelectric material technology, with the chemical formula C4H. 14 N₂OPbCl₄ is prepared as follows: 2-Dimethylaminoethylamine is cooled and stirred in an ice-water bath, then hydrogen peroxide solution is added dropwise while stirring. After the reaction, the resulting reaction solution is vacuum dried to obtain the nitrogen oxide of 2-dimethylaminoethylamine. The nitrogen oxide of 2-dimethylaminoethylamine and lead chloride are added to a concentrated hydrochloric acid solution, heated in an oil bath, and stirred to obtain a pyroelectric material. The pyroelectric material of this invention has a perovskite structure and undergoes a reversible phase transition reaction at a phase transition temperature of 27°C. During the phase transition, a current is generated at the polar axis of the crystal. The phase transition temperature at room temperature allows the pyroelectric material to operate within a relatively stable temperature range, providing reliable energy collection performance and showing great application value in waste heat utilization, self-sustaining systems, and other fields.

The invention belongs to the technical field of organic synthesis, and discloses ketoxime ether as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a ketoxime compound, tert-butyl alcohol and alkali to obtain a mixed solution; and adding a methylation reagent into the mixed solution, and reacting to obtain ketoxime ether. The preparation method is low in raw material cost and simple in process operation; tert-butyl alcohol is used as a solvent, sodium tert-butoxide is used as an alkali source, no water participates in the reaction process, ketoxime hydrolysis is effectively reduced, side reactions are greatly reduced, the yield of the obtained product is high, and subsequent separation and solvent recycling are facilitated; use of toxic substances such as sulfur dioxide and sodium nitrite is avoided, and emission of toxic gases such as nitrogen oxides is reduced; and the process safety risk is reduced, and the method is safe, reliable, simple and feasible.

The invention relates to the technical field of synthesis of chlorine-containing pyridine intermediates, and discloses a method for synthesizing 2, 3, 4, 5-tetrachloropyridine by using 2, 5-dichloropyridine, which comprises the following steps: step 1, preparation of 2, 5-dichloropyridine nitrogen oxide: taking 2, 5-dichloropyridine as a raw material, reacting in the presence of a catalyst and acetic acid, and then filtering to remove the catalyst to obtain 2, 5-dichloropyridine nitrogen oxide; adding an acetic acid solution of 2, 5-dichloropyridine nitrogen oxide; step 2, nitration reaction: adding sulfuric acid and nitric acid, and reacting to obtain 2, 5-dichloro-4-nitropyridine nitrogen oxide; step 3, nitrogen and oxygen removal reaction: adding acetyl chloride to replace 4-position nitro to obtain 2, 4, 5-trichloropyridine nitrogen oxide, and then adding phosphorus trichloride to remove nitrogen and oxygen to obtain 2, 4, 5-trichloropyridine; and 4, chlorination and refining: adding Lewis acid into the 2, 4, 5-trichloropyridine, reacting to obtain a 2, 3, 4, 5-tetrachloropyridine crude product, and refining the crude product to obtain the finished product 2, 3, 4, 5-tetrachloropyridine. The invention solves the problems of more byproducts and unsatisfactory product purity and yield in the prior art.

The invention provides a preparation method of urea, which comprises the following steps: forming an electrode pair with a first counter electrode by taking a solution containing carbon dioxide and nitrogen oxide salt as a first electrolyte and a first working electrode as a cathode, a working voltage of-0.7 V to-1.0 V is applied to the first working electrode, so that carbon dioxide and the nitric oxide-containing salt in the electrolyte are subjected to a co-reduction reaction to obtain urea, and byproducts of carbon monoxide and ammonia are generated; a reaction solution after the co-reduction reaction is completed is used as a second electrolyte, a second working electrode is used as an anode to form an electrode pair with a second counter electrode, a working voltage of 0.6-0.9 V is applied to the second working electrode, so that carbon monoxide and ammonia in the second electrolyte are subjected to a co-oxidation reaction to obtain urea, and by-products carbon dioxide and nitrogen-containing oxide salt are generated; and taking the reaction liquid after the co-oxidation reaction as a first electrolyte, and alternately and repeatedly carrying out the co-reduction reaction and the co-oxidation reaction. The conversion rate of the urea prepared by the preparation method is high.

The invention provides a preparation method of a lybula intermediate, which comprises the following steps of: selectively generating a compound II from a compound I under the action of an inducer, reacting the compound II with a compound III under the action of a halide and an alkali reagent, removing a protective agent to generate a compound IV, generating a compound V from the compound IV under the action of an oxidizing agent and a pro-oxygen agent, and purifying to obtain the lybula intermediate. And the obtained Leibolifera intermediate is high in yield and purity, and the content of nitrogen oxide impurities is low.

The application provides a method for preparing calcium thiocyanate by using desulfurization waste liquid, calcium nitrate and ammonium thiocyanate are respectively dissolved into 30-50% solution, the calcium nitrate solution is slowly dropped into the hot ammonium thiocyanate solution under the conditions of heating and stirring, under the heating state, the double decomposition reaction occurs to generate calcium thiocyanate and ammonium nitrate, with the continuous heating and the evaporation of water, the concentration of calcium thiocyanate gradually increases, the ammonium nitrate is heated and decomposed to generate nitrogen oxide and ammonia gas, the generated process gas rich in nitrogen oxide and ammonia gas is condensed and introduced into the coking ammonia removal and denitration section for treatment, and finally the evaporation and concentration obtain about 50% calcium thiocyanate product. The method uses industrial waste to provide raw materials, and the production cost is low; the process tail gas generated in the reaction only needs to be treated by the existing ammonia removal and denitration device of the coking enterprise, without increasing additional equipment, thereby saving the expenditure; and the method has environmental protection benefit, social benefit and economic benefit.

The application discloses indazole nitrogen oxide and a synthesis method and anticancer activity application thereof, and belongs to the technical field of organic synthesis and drug discovery. N-nitrosoaniline compound 1, diazindione compound 2, a catalyst, an additive and hexafluoroisopropanol are mixed, and the mixture is reacted by temperature rising to obtain indazole nitrogen oxide. The chemical structure of the indazole nitrogen oxide is as follows: researches show that the indazole nitrogen oxide has the activity of inhibiting the proliferation of Hela, A549 and HCT-116 cancer cells, and has potential medicinal value. Meanwhile, the synthesis method provided by the application is completed by one-pot multi-step tandem reaction, and the process is simple and efficient. The synthesis method has the following remarkable characteristics: raw materials are cheap and easy to obtain, the product is valuable, the steps are economical and atomic economy is high.

The application provides a deodorization catalyst and a preparation method and application thereof, and belongs to the technical field of deodorization catalysts. The application uses pseudo-boehmite as a catalyst active carrier, and uses diiron trioxide, titanium oxide and silicon oxide as effective active components of the catalyst. Through synergistic action, the catalyst accelerates the full combustion of foul-smelling gas in the production of animal carcass treatment and feather protein powder in a incinerator under the condition of ≤700 DEG C, and converts the foul-smelling gas into harmless products such as carbon dioxide, nitrogen, sulfur, water vapor, etc., and a small amount of over-oxidized products such as sulfur dioxide and nitrogen oxides, etc. have good alkaline conditions and water solubility, and are removed by spraying an alkaline aqueous solution, so as to reach the environmental protection standard discharge, and finally realize the efficient and low-cost elimination of the foul-smelling gas generated in the production of animal carcass treatment and feather protein powder.

The present application is named inert carbon and its preparation method and application, which can be applied to the field of manufacturing smoke and fire agent (medicine) and initiating explosive, completely replaces black powder and solves the emission of harmful gases of sulfur dioxide and nitrogen oxides after combustion and explosion, and greatly improves the launching power, sensitivity, smoke and hygroscopicity. The carbon source is crushed to form carbon powder, and the water-soluble substances with strong hygroscopicity in the carbon powder are removed by water washing to form clean carbon powder. The high-purity carbon powder can also be prepared by boiling the carbon powder with strong acid or strong base and then washing with water. Then, the carbon powder, clean carbon powder, high-purity carbon powder or mixed carbon powder is subjected to three-dimensional penetration coating by using high-temperature or high-temperature pressure pentaerythritol aqueous solution, so as to become a truly high-energy fast-burning inert carbon. Subsequently, the surface of the inert carbon can be modified and coated by using organic matter such as stearic acid to reduce the friction sensitivity and impact sensitivity of the smoke and fire agent (medicine), so as to replace sulfur and ordinary carbon powder, and make it perfectly applied in the smoke and fire agent (medicine) and initiating explosive.

Provided are a compound for recovering a p53 mutation function and use thereof, particularly relating to a compound represented by Formula M, or an enantiomer, a diastereomer, a racemate, a tautomer, a stereoisomer, a geometric isomer, a crystal form, a nitrogen oxide, a metabolite or pharmaceutically acceptable salt, ester, solvate, hydrate, isotope-labeled compound or prodrug of the compound.

The present application relates to a compound for inhibiting IRAK4 activity and a use thereof, and specifically provides a compound as represented by formula A, or an enantiomer, a diastereoisomer, a racemate, a tautomer, a stereoisomer, a geometric isomer, a nitrogen oxide, a metabolite or a pharmaceutically acceptable salt, an ester, a solvate, a hydrate, an isotope-labeled compound (preferably a deuterated substance), or a prodrug thereof,

This invention relates to a method and system for measuring nitrogen oxide emissions from soil in the field using an extraction-absorption method, belonging to the field of environmental monitoring technology. A soil sampling unit is sealed and placed on the surface of the soil to be tested. Gas is extracted from the soil sampling unit by a power unit, causing outside air to replace the gas inside the soil sampling unit, forming an airflow flowing across the surface of the soil. The airflow is sequentially guided to a first absorption bottle, an oxidation bottle, and a second absorption bottle connected in series. The concentration of nitrite ions in the first and second absorption solutions is measured respectively. Based on the measured nitrite ion concentration, sampling flow rate, sampling time, and the area of ​​the soil covered by the soil sampling unit, the nitrogen oxide emission flux is calculated. This invention achieves stable, efficient, and low-cost offline quantitative measurement of nitrogen oxide emissions from soil in the field, providing reliable technical support for research on land-atmosphere exchange, soil nitrogen cycle, and atmospheric pollution source tracing.

The application relates to the fine chemical technology field and discloses a method for synthesizing an ultraviolet absorber through an alcohol reduction reaction, and the method steps are as follows: under the action of a MOF-derived copper-nickel-cerium trimetallic catalyst, an azo compound (I) or an intermediate nitroxide (II) is reacted with alcohol R-(OH) n A reduction reaction is generated by heating in a reaction kettle, and a benzotriazole compound (III) is prepared. The application utilizes the reduction characteristics of alcohol, adopts the MOF-derived copper-nickel-cerium trimetallic catalyst, combines the porosity and metal synergistic effect regulated by a structure directing agent, effectively improves the catalytic reduction efficiency and reaction selectivity, and the synthesis method has the advantages of no sewage, low cost, high safety and high yield.

The application discloses an egg white loaded nitro radical nitrogen oxide nanocomposite material and a preparation method and application thereof, and belongs to the technical field of material preparation. The nitro radical nitrogen oxide nanocomposite material is regular in shape, has an average particle size of 100nm-150nm, and has good dispersibility. The preparation method is as follows: chitosan and tetramethylpiperidine-nitrogen oxide are respectively dissolved in water and dichloromethane or dimethyl sulfoxide, the two are mixed after stirring and complete dissolution, dialysis is performed after reaction, the material is washed with ultrapure water, centrifuged, and dispersed in ultrapure water after dialysis. In addition, the egg white is loaded on the nitro radical nitrogen oxide nanocomposite material, so that the nanomaterial is endowed with immunogenicity. The material prepared by the method has a magnetic resonance imaging enhancement effect and potential as an immunoadjuvant.

To provide a method of selectively depositing a film in a desired region on a substrate without switching an inhibition treatment or a reactive gas.SOLUTION: A Ru thin film is selectively deposited on a first region composed of a metal M on a substrate using a Ru chelate with a substrate selectivity of S>0 shown by an equation below as a precursor. A film deposition of the Ru thin film is suppressed in a second region that is composed of either of an oxide, a carbide, a nitride, a silicide, an oxycarbide, or an oxynitride on the substrate. T1: a thickness of the Ru thin film deposited for an arbitrary time at a film deposition temperature of 200°C or less on a metal M as a base material (T1>0 nm). T2: a film thickness when the Ru thin film is deposited on a compound C as the base material under a same condition as that for the metal M as the base material (T2≥0 nm).SELECTED DRAWING: Figure 3