128 results about "Non oxidative" patented technology

The invention provides a preparation method of alumina aerogel, and belongs to the field of aerogel. The method comprises the following steps: modifying industrial aluminum hydroxide, so that the industrial aluminum hydroxide is subjected to crystal form transformation; mixing the modified industrial aluminum hydroxide with a solvent to obtain first slurry; adjusting the pH value of the first slurry to a set pH value; performing hydrothermal treatment on the first slurry with a set pH value to obtain second slurry; adjusting the solid content of the second slurry to a set solid content; aluminum salt is added into the second slurry with the set solid content, and third slurry is obtained; sequentially freezing and freeze-drying the third slurry to obtain a frozen compound; the frozen compound is sequentially subjected to first heating in a non-oxidizing atmosphere and second heating in an oxidizing atmosphere, and the aluminum oxide aerogel is obtained. Therefore, the invention provides a novel preparation method of the aluminum oxide aerogel.

The invention relates to a high-temperature-resistant aluminum oxide aerogel and a preparation method thereof, and relates to the technical field of aluminum oxide aerogel preparation, the method comprises the following steps: industrial aluminum hydroxide is subjected to a solvothermal reaction, and then a solvothermal reaction product is ground to obtain a-type Al2O3.nH2O, where n is lt; 1.2; the preparation method comprises the following steps: carrying out heat treatment on industrial aluminum hydroxide, and carrying out solvothermal reaction on a product obtained by heat treatment and an acidic regulator to obtain an aluminum oxide substance containing a functional group; the preparation method comprises the following steps: mixing an aluminum oxide substance containing a functional group, a type Al2O3.nH2O, an acidity regulator and a solvent, and then freezing to obtain first aluminum oxide aerogel; and sequentially carrying out heat treatment on the first aluminum oxide aerogel in a non-oxidizing atmosphere and an air atmosphere to obtain the high-temperature-resistant aluminum oxide aerogel. The heat conductivity coefficient of the aluminum oxide aerogel provided by the invention under the condition of 25-1400 DEG C is not higher than 0.03 w / m.k.

Non-oxidizing 2-in-1 cleaning and disinfecting frothing compositions of the present disclosure comprise a cationic biocide, one or more frothing nonionic surfactants, a basicity source, and water. The 2-in-1 foaming composition is particularly suitable for ex-situ cleaning (COP) processes and is effective in cleaning and disinfecting hard surfaces and objects in a single step. The 2-in-1 foaming composition is effective in removing soil, including heavy fat and protein soil, and provides stable, rich foam. Methods of using the 2-in-1 cleaning and disinfecting frothing compositions are also provided.

An electrochemical cell is disclosed. The electrochemical cell may include a first electrode including carbon nanotubes and one or more catalysts formulated to accelerate one or more non-oxidative deprotonation reactions to produce at least one hydrocarbon compound, H+, and e− from at least one other hydrocarbon compound, a second electrode, and an electrolyte between the first electrode and the second electrode. The carbon nanotubes may be oriented at least substantially vertically relative to the electrolyte. Related methods and systems are disclosed.

One embodiment provides a method for measuring the amount of total organic fluoride content of a PFAS-containing sample, the method comprising: placing a sample comprising a PFAS compound into a measurement device, where the measurement device comprises an oxidation pond and a non-oxidation pond, where the oxidation pond comprises a boron-doped diamond electrode; measuring the amount of total inorganic fluoride of the sample prior to oxidation using the measuring device; applying an electric potential to a portion of the sample in the oxidation pond, wherein the electric potential oxidizes the PFAS compound; measuring an amount of total organic fluoride of the sample after the oxidation using the measuring device to provide a measurement signal of the total organic fluoride; and determining a first derivative of the measurement signal of the total organic fluoride. Other aspects are described and claimed.

Method of manufacturing a steel strip comprising the steps of: - casting a molten steel into a slab; - reheating the slab at a temperature of 1150°C or more for a time of 1 hour or more; - hot rolling the steel into a strip, preferably using an average F1 slab entry temperature of more than 1000°C; - coiling the hot rolled steel strip; - batch annealing the steel strip: - at a temperature in the intercritical range (i.e. between Ac1 and Ac3), preferably less than 700°C; - in a non-oxidizing and non-nitrogenizing atmosphere; - for a total annealing time of at least 5 hours, preferably at least 10 hours so as to obtain: a Mn enrichment in austenite such that the Mn content is at least 1.25 times the overall Mn content of the steel; and a C enrichment such that the C content is at least 1.2 times the overall C content of the steel; - cooling the steel after batch annealing in air, forced air or water quenching.

The invention discloses a non-oxidation type coloring composition and application thereof, and relates to the technical field of daily chemical products. The non-oxidative coloring composition comprises the following components: an acid dye, a rheology modifier, an acid regulator and a hair conditioner. The weight ratio of the acid dye to the rheological modifier to the acid regulator to the hair conditioner is (0.4 to 5) to (1.2 to 3.6) to (1.5 to 4) to (0.2 to 0.45). According to the non-oxidation type coloring composition and the application thereof, the components in the composition cooperate with each other to play a synergistic role, so that pigments can be adsorbed and deposited on the surface of hair, and the non-oxidation type coloring composition has excellent color persistence, color uniformity and anti-staining property, is mild and non-irritating, and also has a certain conditioning and repairing effect on the hair. The non-oxidation type coloring composition provided by the invention can be applied to non-oxidation type hair dyes, including semi-permanent type hair dyes and temporary hair dyes.

The application discloses a non-oxidative weak-acid polyacrylamide degrading agent and a preparation and use method thereof, and the degrading agent comprises the following components: a reducing agent, a regulator, a mutual solvent and water; the reducing agent is one of 3-O-ethyl ascorbic acid ether and L-ascorbic acid-2,6-dibutyrate; the regulator is ammonium chloride; and the mutual solvent is one of ethylene glycol monobutyl ether and isopropyl alcohol. The problems that the existing degrading agent needs to be isolated by a plug for redox reaction with subsequent injected mud acid or secondary precipitation is caused by metal ions such as Na + , K + , Fe 2+ and the like in the degrading agent and subsequent injected mud acid are effectively solved.

To provide a method for producing ethylene in high yield by selective hydrogenation of a gas mixture containing high-concentration acetylene generated by a methane pyrolysis process.SOLUTION: There is disclosed a process for converting methane into value-added compounds, wherein a gas mixture containing high-concentration acetylene as well as hydrogen formed through methane pyrolysis (for example, non-oxidative coupling of methane) is selectively hydrogenated in the presence of a bimetallic supported catalyst to obtain ethylene from acetylene in the gas mixture, while unreacted methane and hydrogen are recovered as byproducts and / or additionally recycled.SELECTED DRAWING: Figure 1

The present invention easily yields, in a short time, a gas consisting mainly of high-concentration methane, by gasifying a yielded biocoal carbonization product. In this subcritical-water treatment device, a first-stage treatment at 150-220°C for a predetermined and prescribed treatment time is set in a first-stage temperature range not higher than 220°C, and a second-stage treatment at 110-130°C for a predetermined and prescribed treatment time is set in a second-stage temperature range not higher than 130°C. In the first-stage treatment, low-grade coal as a raw material to be treated is deprived of moisture to form voids in a volume amount of 20% or larger per unit volume of the low-grade coal, and molten / liquefied components are formed from some of the low-grade coal. In the second-stage treatment, the molten / liquefied components are solidified in the voids and caused to adhere to components in the other portions that have not been melted or liquefied, thereby filling the voids and yielding a biocoal carbonization product having a void content of 9% or less with respect to the entire volume. This device for utilizing reformed low-grade coal is equipped with a gasification means for methanating the biocoal carbonization product, the gasification means gasifying, in a non-oxidization state, the reformed low-grade coal yielded from a bio-based carbonization product to yield methane.

The invention discloses a ruthenium-based ammonia synthesis catalyst, a preparation method thereof and application of the ruthenium-based ammonia synthesis catalyst in catalytic synthesis of ammonia. The ruthenium-based ammonia synthesis catalyst comprises a high-entropy oxide carrier and a ruthenium active component loaded on the carrier, the high-entropy oxide is a single solid solution phase formed by oxides of at least three of Mg, Ca, Sr and Ba and oxides of at least two of La, Ce, Pr, Nd and Sm. The preparation method comprises the following steps: mixing soluble salts corresponding to metals forming the high-entropy oxide with an organic foaming agent in water, evaporating and concentrating to form gel, and carrying out heat treatment at 110-150 DEG C to foam the gel to obtain a porous fluffy solid precursor; grinding the solid precursor, carrying out Joule heating treatment in a non-oxidizing atmosphere, instantly heating the solid precursor to 600-1200 DEG C within 10 seconds, carrying out heat preservation for 1-10 seconds, and then cooling to obtain a high-entropy oxide carrier; and loading a ruthenium active component on the high-entropy oxide carrier to obtain the ruthenium-based ammonia synthesis catalyst.

A method for producing lithium sulfide according to the present invention is characterized by having a raw material mixing step (S1) in which lithium sulfate and a carbon material are mixed to form a mixed raw material, and a thermal reduction step (S2) in which the mixed raw material is heat-treated in a non-oxidizing atmosphere and the lithium sulfate is thermally reduced to generate lithium sulfide, the method also being characterized in that a carbon powder having a specific surface area measured by the BET method of 55 m2 / g or greater is used as the carbon material. A method for producing a sulfide-based solid electrolyte according to the present invention is characterized in that lithium sulfide produced through the method for producing lithium sulfide according to the present invention is used as a raw material.

The application provides a preparation method of an alumina aerogel, and belongs to the field of aerogels. The method comprises the following steps: modifying industrial aluminum hydroxide to cause a crystal type transformation of the industrial aluminum hydroxide; mixing the modified industrial aluminum hydroxide with a solvent to obtain a first slurry; adjusting the pH value of the first slurry to a set pH value; performing hydrothermal treatment on the first slurry with the set pH value to obtain a second slurry; adjusting the solid content of the second slurry to a set solid content; adding an aluminum salt to the second slurry with the set solid content to obtain a third slurry; sequentially performing freezing and freeze-drying on the third slurry to obtain a frozen composite; and sequentially performing first heating in a non-oxidizing atmosphere and second heating in an oxidizing atmosphere on the frozen composite to obtain the alumina aerogel. Thus, a new preparation method of the alumina aerogel is provided.

Provided are a stainless steel having excellent cold workability and a manufacturing method therefor; and a stainless steel product for which surface hardness is sufficiently high and for which corrosion resistance against acids, particularly non-oxidative acids, is excellent and a manufacturing method therefor.Provided are the stainless steel and the manufacturing method therefor, said steel having a component composition, in terms of % by mass, 0.18-0.25% of C, 0.1-1.5% of Si, 0.35-1.5% of Mn, 0.04% or less of P, 0.01% or less of S, 0.05-0.20% of Ni, 12.5-14.6% of Cr, 1.5-3.0% of one or both of Mo and W according to the relational expression (Mo+½W), 1.0-3.0% of Cu, and 0.03-0.10% of N, the remainder being Fe and impurities. Further provided are the stainless steel product and the manufacturing method therefor, said stainless steel product being obtained by quenching and tempering the foregoing stainless steel.

The product flow system comprises the following steps: preliminary processing of the surface of a copper processing product; keeping the surface of the copper processing product in a non-oxidized color-changing state; transferring the copper product and removing cutting fluid on the surface of the copper product; preventing residual cutting fluid; opening a carbon hydrogen cleaning machine, and automatically cleaning the copper processing product taken out from a cutting water agent tank through the carbon hydrogen cleaning machine; taking and storing the product; the product flow system provided by the application reduces the corrosion of copper by cutting fluid in the flow process, reduces the oxidation of copper body, removes water on the surface of copper, and makes the workpiece cleaning more clean. The copper product itself is processed and reserved, and subsequent soaking of cutting fluid is further recycled, which ensures industrial green production and does not pollute the environment.

The invention relates to glue for bonding a high-temperature electrostatic chuck as well as a preparation method and application thereof, and relates to the technical field of glue. The glue is prepared from the following components in parts by weight: 28 to 40 parts of octamethylcyclotetrasiloxane, 35 to 40 parts of aluminum oxide, 2 to 4 parts of calcium carbonate, 3 to 5 parts of silicon oxide, 2 to 4 parts of polymer filler, 2 to 5 parts of silicate, 5 to 8 parts of non-oxide filler, 3 to 6 parts of organic acid ester, 2 to 5 parts of tin catalyst and 1 to 2 parts of silane coupling agent. During preparation, aluminum oxide and octamethylcyclotetrasiloxane are firstly subjected to ball milling for 8 hours, and then other raw materials are added for ball milling for 16 hours. The glue has high thermal conductivity, excellent high temperature resistance, good mechanical strength and high bonding tensile strength, and can maintain good corrosion resistance at the working temperature of 400 DEG C or above if being applied to high-temperature bonding of the electrostatic chuck.

The present invention provides a method for sequential pyrolysis and carbon deposition to produce a composite carbonaceous product, the method comprising: a pyrolysis process step, which comprises pyrolyzing a pyrolyzable organic feed in a first reaction zone at a pyrolysis temperature in the presence of a non-oxidizing gas to produce hot char and pyrolysis gas, wherein the pyrolysis gas and the non-oxidizing gas are combined to form a gas mixture; discharging the gas mixture from the first reaction zone to a combustion zone, and combusting at least a portion of the pyrolysis gas in the combustion zone, wherein the heat generated by the combustion of the pyrolysis gas is transferred from the combustion zone to the first reaction zone to provide at least a portion of the pyrolysis heat; and a decomposition process step, which comprises directly contacting a hydrocarbon-rich organic gas with the hot char after the hot char is produced in the pyrolysis process step, wherein the hydrocarbon-rich organic gas is catalytically decomposed on the hot char at a decomposition temperature higher than the pyrolysis temperature, thereby producing a gaseous decomposition product and a composite carbonaceous material, the gaseous decomposition product comprising hydrogen, and the composite carbonaceous material comprising char having carbon deposits thereon.

A method for the resource utilization of chromium-containing sludge involves conditioning, decomposition, and roasting of the sludge. During roasting, a non-oxidizing atmosphere is introduced for protection, ensuring that chromium (Cr) is enriched in the residue in a non-toxic, non-volatile, low-valence state, thus producing high-value-added calcium-chromium sand. Simultaneously, sulfur-containing flue gas is collected during roasting to produce sulfuric acid or sodium sulfite, preventing sulfur diffusion and air pollution. This significantly reduces hazardous solid waste emissions from related production processes and lowers hazardous waste disposal costs. This method achieves both the harmless treatment of chromium-containing sludge and the comprehensive resource utilization of chromium, calcium, and sulfur within the sludge.

Reshaping compositions, methods or processes, and kits-of-part reshape keratin fibers. The reshaping composition is a non-reducing, non-oxidizing composition for keratin fibers having a pH in the range of 7 to 12, and comprising a) one or more organic alkalizing agents having a pKa of less than 9.0, b) one or more lipophilic compounds being liquid at 25° C. and atmospheric pressure, at a total concentration in the range of 10% to 80% by weight, calculated to a total weight of the composition, c) one or more surfactants, and d) one or more thickening agents.

This invention provides a manufacturing method suitable for mass production that enables the production of silicon-based alloys with extremely low titanium concentrations without the need for high-grade raw materials. The raw materials, including a silicon source and a reducing agent, are heated and melted to produce a molten material, which is then subjected to additional refining. In the first stage of additional refining, a non-oxidizing gas containing nitrogen is blown into the molten material, and in the second stage of additional refining, an oxidizing gas containing oxygen is blown into the molten material.

A method of measuring and suppressing carbon dioxide in oil and gas geologies is described. A lithological profile of an oil and gas well / reservoir is determined to understand the lithological components which is then used to derive compositions and concentrations of non-oxidizing reagents, corrosion / scale inhibitors, and surfactants for use in a well for the suppression of carbon dioxide formation.

The present invention relates to a catalyst article for treating exhaust gas, the catalyst article comprising a substrate and at least a first catalytic region disposed on the substrate, wherein the first catalytic region comprises a ceria-zirconia support material and a non-ceria-zirconia support material; wherein from 0.1 to 3 wt. % Pt is supported on the ceria-zirconia support material, based on the total weight of the Pt supported on the ceria-zirconia support material and the ceria-zirconia support material; wherein less than 0.1 wt. % Pt is supported on the non-ceria-zirconia support material, based on the total weight of the Pt supported on the non-ceria-zirconia support material and the non-ceria-zirconia support material; and wherein the first catalytic region comprises from 0.1 to 50 g / ft3 Pt, based on the total volume of the substrate.

A reactor, system, and method of converting methane non-oxidatively. A thermal catalytic reactor has a non-oxidative methane coupling (NMC) catalyst disposed on a first surface of a substrate. The NMC catalyst endothermically converts methane in a reaction zone on the catalyst side of the reactor to a product mixture. The reaction zone is heated by thermal conduction. The spatial temperature profile has a sharp increase and decrease that leads to selective control of the surface methane activation and gas phase reaction propagation. The reactor also has an inlet for introducing methane gas for contacting the NMC catalyst and an outlet for removing the product mixture. The heat source may generate the process heat chemically or electrically. Temperature profiles are controlled by zoning the combustion catalyst location or conductive heating element in the reactor.

This invention discloses a method for purifying single-walled carbon nanotubes (SHU). The purification method includes the following steps: mixing crude SHU with a non-oxidizing acid solution in a reaction vessel; introducing gas into the reaction vessel; heating the reaction; and separating the solid and liquid phases to obtain the final product. This invention uses a non-oxidizing acid and gas bubbles to synergistically purify SHU, ensuring effective removal of metallic impurities and amorphous carbon while protecting the SHU from structural damage.

A method for producing phosphorus in which a reaction for forming gaseous phosphorus (g) by bringing phosphorus oxide generated by heating a liquid phosphoric acid compound into contact with a carbon material to reduce the phosphorus oxide and for condensing the gaseous phosphorus (g) to obtain liquid phosphorus (L) is conducted by a flow reaction with a nonoxidizing gas flow, wherein the reduction reaction of the phosphorus oxide is conducted in a carbon material-packed bed, and the condensation of the formed gaseous phosphorus (g) is substantially conducted in a condensation accelerator-packed bed which is disposed downstream of the carbon material-packed bed in contact with the carbon material-packed bed.

The invention provides a passivation method of a sulfuration-state hydrogenation catalyst. The passivation method comprises the following steps: step 1, sulfurizing an oxidation-state hydrogenation catalyst; step 2, preparing a saturated solution of the passivator, and controlling the temperature to be 30-45 DEG C; step 3, in an inert atmosphere, impregnating the sulfurized hydrogenation catalyst in the saturated solution of the passivator, cooling the impregnated hydrogenation catalyst to room temperature in the inert atmosphere, and covering the passivator separated out by crystallization on the surface of the hydrogenation catalyst; wherein the passivating agent can be decomposed into a non-oxidizing small molecule compound at the temperature of 50 to 100 DEG C. The specific passivator is adopted, the hydrogenation catalyst is impregnated in the saturated solution of the passivator at a certain temperature, then the hydrogenation catalyst is cooled to the room temperature, and the passivator is crystallized, separated out and covered on the surface and pore channels of the hydrogenation catalyst, so that the catalyst can be isolated from external oxygen, and the effect of preventing the sulfurized hydrogenation catalyst from being oxidized is achieved.

The invention discloses a hollow positive electrode material precursor with an adjustable inner hole size. The chemical formula of the precursor is Ni < x > Co < y > Mn < z > (OH) < 2 >. The preparation method comprises the following steps: firstly, preparing a nickel-cobalt-manganese mixed salt solution, a precipitator, a complexing agent and a reaction kettle base solution; stirring is started, oxygen and nitrogen mixed gas is introduced, and then the mixed salt solution, the precipitator and the complexing agent are added into the base solution in a parallel flow mode for rapid nucleation. In the stage, the pH is controlled to be 12.00-12.40, the temperature is 45-70 DEG C, the ammonia concentration is 0.2-0.5 mol / L, and the nucleation duration accounts for 1-8% of the total duration. After nucleation, the pH value of the system is reduced to 11.3-12.0, feeding is continued for particle growth, and the atmosphere is switched into non-oxidizing gas. Increasing the flow of the mixed salt solution at the later growth stage until the reaction reaches the target particle size. Separating, aging, washing and drying the product to obtain a hollow precursor; the method is simple in process, low in cost, easy to scale and wide in industrialization prospect.

Multipurpose product with prolonged antimicrobial action comprising at least one quaternary ammonium and copper nanoparticles in non-oxidized metallic state (Cu0), where copper nanoparticles in non-oxidized metallic state (Cu0) are found nucleated in at least one quaternary ammonium. A method for producing a multipurpose product with prolonged antimicrobial action.

This invention relates to the field of high-performance thermoplastic composite materials, and in particular to a method for preparing polyaryletherketone resin. The method includes the following steps: under a non-oxidizing atmosphere, a dihydroxy aromatic monomer containing a bisphenol structure, a dihalogenated aromatic monomer containing a nitrile group, and a dihalogenated aromatic ketone monomer containing a difluorine substituted group are reacted in a polar solvent system with a boiling point above 150°C in the presence of an alkali metal carbonate to form the corresponding phenolate; an aromatic hydrocarbon dehydrating agent is added to the system for azeotropic dehydration to remove water generated during the reaction and promote the formation of the phenolate; a nucleophilic substitution polycondensation reaction is carried out at a higher temperature; during the polycondensation reaction, a capping agent is added to regulate the end-chain structure and molecular weight distribution, wherein the capping agent is 2,4′-difluorobenzophenone; after the reaction is completed, the reaction product is separated and purified to obtain the polyaryletherketone resin.

The application provides a synthesis method of aromatic primary amine compounds and relates to the technical field of organic synthesis. The synthesis method provided by the application comprises the following steps: under the action of a catalyst, aromatic hydrocarbon compounds and ammonium salt are reacted under visible light in a solvent system and a non-oxidizing atmosphere to generate aromatic primary amine compounds; and the catalyst comprises an acridine salt and a cobalt oxime complex. The application realizes primary amination of aromatic hydrocarbons by constructing C(sp 2 )‑N bonds through C‑H bond functionalization, and has the advantages of mild reaction conditions, simple operation, safety and greenness, no need of oxidants, atomic economy and step economy, and conformity to the green development concept.