55results about "Oxygen/ozone/oxide/hydroxide" patented technology

This paper discloses a rapid cyclic pressure swing adsorption (PSA) method for separating O2 from N2 and / or Ar. The method uses a carbon molecular sieve (CMS) adsorbent with a driving force of 1 atma and 86 atma, as indicated by a linear driving force model. o F measures at least 5% O2 / N2 and / or O2 / Ar kinetic selectivity and at least 0.2000% O2 adsorption rate (1 / s).

The present invention relates to an exothermic process for producing metal oxides or metalloid oxides, comprising introducing metal and / or metalloid precursors into a flame formed by burning a gas mixture comprising oxygen and hydrogen, at least a portion of the hydrogen being obtained from the electrolysis of water or an aqueous solution using electrical energy obtained at least in part from a renewable energy source, and at least a portion of the thermal energy of the flame being transferred by at least one exchanger to a first heat transfer medium, thereby heating the first heat transfer medium to a maximum temperature in the range between 80°C and 150°C.

[Problem] Provided are an ammonia-hydrogen mixed fuel production apparatus and a fuel supply system, which are capable of stably acquiring hydrogen from ammonia even when a required ratio of a fuel is changed. [Solution] An ammonia-hydrogen mixed fuel production apparatus 1010A includes an oxygen separator 13 that separates oxygen (O2) 12 from air 11 at a desired concentration, a reforming reactor 15 that converts ammonia (NH3) supplied from a raw material supply portion 14 into hydrogen (H2) by using the oxygen of the desired concentration from the oxygen separator 13, and a gas component analyzer 17 that measures a concentration of one or both of the hydrogen and the ammonia in a reformed gas 16 from the reforming reactor 15.

The present invention relates to an enhanced catalytic nickel oxide sheet having an organic part which includes non-stoichiometric nickel oxides dispersed in an organic matrix, wherein the catalytic sheet is supported on a substrate. The invention also relates to a method for obtaining the catalytic film and to its uses as an electrode in electrocatalysis of water or in photocatalysis.

To provide a gas supply device capable of performing an energy-saving operation by supplementing the lack of heating capacity for preheating a solid electrolyte by heating a gas on an intake side of a gas generation unit or alternating a heating mechanism for preheating the solid electrolyte, and a gas production method using the gas supply device.SOLUTION: A gas supply device including a gas generation unit with a solid electrolyte comprises a gas generation unit, and a heat conduction mechanism which can exchange heat in a gas on the intake side or a gas on the exhaust side of the gas generation unit.SELECTED DRAWING: Figure 1

A method for efficient photocatalysis in which electric charge carriers are energetically excited upon absorption of electromagnetic radiation, characterized in that the charge carriers are separated by a pyroelectric field.

Method for producing pyrolytic metal and / or metalloid oxides with the aid of a burner (200) having a burner head (100) comprising an outlet end (104), a central section (110) having at least one central channel (112), and a jacket channel (116) positioned concentrically around the central section, and wherein the following method steps are included: providing at least one metal or metalloid precursor, at least one fuel gas and oxygen via the central section (110); providing at least one fuel gas via the jacket channel (116); providing a flame (190) by combusting the fuel gas at the outlet end (104), wherein the ratio R1 = VC / VJ is at most 6.0, wherein VC is the normalized gas outlet velocity of all gases from the central section (110), and VJ is the normalized outlet gas velocity of all gases from the jacket channel (116).

This invention relates to a water electrolysis system for producing compressed hydrogen, the system comprising a water electrolysis cell stack, a multiphase pump disposed downstream of the electrolysis cell stack, and a hydrogen gas-liquid separator. The multiphase pump is disposed between the water electrolysis cell stack and the hydrogen gas-liquid separator. The invention also relates to a method for producing compressed hydrogen in a water electrolysis system, the method comprising: supplying deionized water or liquid electrolyte to the water electrolysis cell stack; producing hydrogen in the water electrolysis cell stack; compressing the generated hydrogen and a mixture of entrained deionized water or liquid electrolyte in the multiphase pump; and performing gas-liquid separation of the compressed generated hydrogen and the entrained deionized water or liquid electrolyte mixture in the hydrogen gas-liquid separator.

A separation membrane for separating hydrogen and a gas L, in which an activation energy Ep(S) (kJ / mol) of a permeance P(S) (mol / (m2·s·Pa)) of hydrogen through the separation membrane derived within a range of a temperature Tam (° C.) satisfying Formula (1-I) described below and an activation energy Ep(L) (kJ / mol) of a permeance P(L) (mol / (m2·s·Pa)) of a gas L (provided that hydrogen is excluded) through the separation membrane derived within the same temperature range satisfy Formula (1-II) described below: 5 (° C.)≤Tam (° C.)≤200 (° C.) (1-I)|Ep(L)|<|Ep(S)| (1-II). There can be provided a separation membrane for separating and recovering hydrogen, a separation membrane laminated body, a separation module or separation tower, a hydrogen recovery system, and a method for separating and recovering hydrogen, which enable safe and highly efficient separation and recovery of hydrogen from a mixed gas composed of molecules having relatively close dynamic molecular diameters even when a supply pressure is relatively low, including separation and recovery of hydrogen from a hydrogen-oxygen mixed gas.

A regolith oxygen extraction system that extracts oxygen and produces molten regolith by processing and heating a continuous regolith feed. The system feeds regolith through a vertical hopper to a reaction chamber, the regolith itself sealing the inlet to the reaction chamber while maintaining continuous flow. The heated regolith reacts within the reaction chamber to produce oxygen and processed regolith. The processed regolith is removed from the reactor chamber through an extrusion nozzle, the processed regolith itself sealing the produced gases within the reactor chamber while maintaining continuous flow of processed regolith. The system employs non-contact reaction temperature measurement and rapid oxygen content measurement in the regolith upstream and downstream of the reaction zone, and may be integrated with multiple oxygen extraction methods.

The application discloses a gas-liquid phase parallel flow rotating liquid film reactor and application thereof in preparation of metal hydroxide. The application is based on the basic process of preparing metal hydroxide from a gas-liquid phase precipitation method, and a gas-liquid phase multi-fluid parallel flow rotating liquid film reactor is designed through computational fluid dynamics simulation analysis, multiple gas-liquid fluid inlets are constructed, and the traditional vertical inlet is improved into tangential feeding along the rotating direction, so that the forced mixing process of the gas-liquid two phases in the reaction space is improved, the microscopic mixing and nucleation process of the reactants are strengthened, the inlet anti-overflow device is added, the upward overflow of the increased inlet flow fluid is avoided, the quality control of the product is strengthened, the efficient control of the nucleation particle size and distribution is realized, the production efficiency and product quality can be improved, the product with small particle size and narrow particle size distribution is obtained, the product particle size can be controlled in the range of 15-200 nm, and the primary particle size distribution range can be reduced to 30-60 nm.

Provided in the embodiments of the present application is a preparation method for an MOX fuel powder. An MOX fuel powder comprises a plurality of actinide nuclide oxides. The method comprises the following steps: S1, mixing different actinide nuclide salts with urea to form a mixed actinide eutectic system, the actinide nuclide salts being one of hexavalent actinide nitrates, tetravalent actinide nitrates, hexavalent actinide oxalates and tetravalent actinide oxalates; S2, heating the mixed actinide eutectic system obtained in step S1 to a first preset temperature for performing deamination treatment on the mixed actinide eutectic system, so as to remove the urea therein; and S3, heating the product obtained after the deamination treatment in step S2 to a second preset temperature for performing denitrification and / or decarburization treatment on the product obtained in step S2, so as to obtain a plurality of actinide nuclide oxides. Provided in the embodiments of the present application is the preparation method for an MOX fuel powder, which is simple, does not produce a waste liquid, is more economical and environmentally friendly, and can obtain a completely uniform MOX fuel powder.

A water splitting system includes a hydrogen production chamber including a hydrogen production port, an oxygen production chamber including an oxygen collection port, an ion exchange membrane coupling the hydrogen production chamber and the oxygen production chamber, and a photocatalytic structure including a first catalytic portion disposed in the hydrogen production chamber and a second catalytic portion disposed in the oxygen production chamber. The first catalytic portion is configured for production of hydrogen via the hydrogen production port. The second catalytic portion is configured for production of oxygen via the oxygen production port.

The invention relates to a method for decontaminating a thermoplastic preform (14) by exposing at least a portion of the preform (14) to reactive species (RS) obtained by mixing a precursor agent (AP) with a plasma (P), the plasma (P) being generated by injecting a carrier gas (G) into a reactor (40), characterized in that the mixing of the precursor agent (AP) and the plasma (P) is carried out exclusively outside the reactor (40) before coming into contact with the preform (14). The invention also relates to a decontamination device (50) for implementing the method.

Methods and systems for producing sulfuric acid and / or sulfur trioxide, which may include contacting a first stream that includes oxygen and a second stream that includes sulfur to produce a third stream that includes sulfur dioxide, and subjecting the third stream to an oxidation reaction to produce a fourth stream that includes sulfur trioxide. The contacting of the first and second streams may include contacting a molar amount of oxygen that exceeds a molar amount of sulfur.

The invention discloses a preparation method of a hollow spherical inorganic oxide based on self-assembly, which comprises the following steps: (1) mixing a passivating agent with an inorganic oxide precursor, performing passivation protection on the inorganic oxide precursor in a transesterification or chelation reaction mode, adding water or an aqueous solution with the pH value of 4-14 for pre-crosslinking, and performing vacuum drying to obtain the hollow spherical inorganic oxide based on self-assembly; a solution A containing an amphiphilic composite precursor is obtained; (2) mixing the solution A with a non-polar compound to prepare a solution B, finally dispersing the solution B in water or an aqueous solution with the pH value of 4-14 to form an oil-in-water structure, then stirring to react for more than 6 hours, and then washing and drying to obtain a hollow spherical oxide precursor; and (3) calcining the hollow spherical oxide precursor to obtain the hollow spherical inorganic oxide. The method does not need an interface agent, a hard template or a high-temperature and high-pressure environment, and has the advantages of low cost, expandability, simple preparation, greenness and safety.

This disclosure relates to a replaceable photocatalytic cartridge for use in a reactor, and a method for producing the replaceable photocatalytic cartridge. The replaceable photocatalytic cartridge being suitable for use within a reactor that photocatalytically splits water, such as a PWS reactor. In one embodiment, the photocatalytic cartridge comprises a container that contains a substrate that is coated with photocatalytic particles, wherein, in use, the photocatalytic cartridge is configured to be removably inserted into a receiving portion of the reactor such that the coated substrate is adapted to participate in a photocatalytic reaction with H2O and solar radiation within the reactor.

Black mass from disused lithium batteries is leached for recovery of various metals in a process that includes precipitation, solvent exchange, ion exchange, and salt splitting to create multiple product streams for recovery of pure value products. Most typically, the process is a closed-loop process and allows for production of metallic cobalt and nickel, EMD, and a high purity lithium hydroxide or carbonate product with minimal generation of waste streams.

The invention discloses a dynamic self-regulation oxygen production and supply system for mining mechanical equipment in a high altitude area. The dynamic self-regulation oxygen production and supply system comprises a dirty air purification circulation system, an oxygen supply system, a fresh air mixing system and an environment detection and precise oxygen supply system, the dirty air purification circulation system performs two-stage purification treatment on operation dirty air through wet cyclone and dry filtration; the oxygen supply system is pressurized through an air compressor with air pressure compensation, and oxygen-enriched air is prepared by adopting a pressure swing adsorption principle; the fresh air mixing system is used for uniformly mixing the purified circulating air with the oxygen-enriched air; the environment detection and precise oxygen supply system drives a jet device to realize fixed-point oxygen supply by monitoring oxygen concentration in real time and positioning personnel. Through intelligent cooperation of multiple modules, the technical bottlenecks that oxygen carrying is difficult in the high-altitude low-pressure environment, traditional ventilation is high in energy consumption, and the oxygen utilization rate is low are overcome, efficient cyclic utilization of oxygen, accurate supply according to needs and system energy consumption optimization are achieved, and the safety of high-altitude mine excavation operation and the working efficiency of personnel are remarkably improved.

Methods and systems for producing sulfuric acid and / or sulfur trioxide may include contacting a first stream comprising oxygen and a second stream comprising sulfur to produce a third stream comprising sulfur dioxide, and subjecting the third stream to an oxidation reaction to produce a fourth stream comprising sulfur trioxide. The contacting of the first and second streams may include contacting a molar amount of oxygen that exceeds the molar amount of sulfur.

A method for forming aggregates of non-stoichiometric metal oxide nanoparticles is disclosed, comprising the steps described herein.

The invention relates to a method for separating gases which comprises: - a first step in which a gas fuel stream comprising combustible substances that produce gas products when oxidised, and an oxygen-rich inlet stream are passed through at least two modules of oxygen-separating ceramic membranes, such that the two streams come into contact through the membranes and exchange heat; - a second step of selective diffusion of oxygen from the oxygen-rich stream to the fuel stream, such that the outlet streams from the membrane modules are an oxygen-depleted or completely oxygen-free stream and a partially or completely oxidised stream; and - a third step of recovery of at least two separate outlet streams of at least two gases selected from oxygen, nitrogen, carbon dioxide and hydrogen

An apparatus for producing high-purity oxygen includes a heat exchanger for cooling feed air, a first rectification column, and a second rectification column. The first column reduces high-boiling-point impurities from the cooled air to produce an oxygen-containing liquid from a discharge portion. This liquid is then transferred to the second column, which reduces low-boiling-point impurities to yield the final high-purity oxygen product. A dedicated piping system connects the columns and features a branch. First piping, controlled by a first valve, directs the oxygen-containing liquid to the second column to regulate its flow rate. Second piping, controlled by a second valve, branches from the first. This arrangement allows for diversion of the liquid, enabling precise control over the properties of the feed to the second column. This control scheme ensures consistent product quality without reliance on expensive, real-time analytical instruments.

An apparatus for producing fumed silica from silica is described, wherein a plasma arc reactor includes at least one top electrode extending to the molten silica contained in the reactor, a conductive plate provided under the molten silica and a bottom anode. A plasma arc is adapted to be generated, wherein the plasma arc is provided at a tip of the electrode and is adapted to be transferred directly to the molten silica for forming SiO. A quenching system is also provided, such as hydrogen and oxygen containing gases that are injected within the reactor. The quenching system is adapted to reform SiO2 but in nano-sized amorphous particles, with a reactor outlet being provided for allowing the amorphous SiO2 nano particles in the form of fumed silica to exit the reactor.

A system and method of ultra-high purity (UHP) oxygen production from an argon and oxygen producing cryogenic air separation unit incorporating a dedicated methane rejection column or column section having a liquid to vapor (L / V) ratio lower than the L / V ratio in the associated argon rectifier is provided.

Reactor systems and methods of operation are described herein. In some methods, the system includes a reactor body defining an internal cavity and a three-dimensional structure disposed in the internal cavity. The three-dimensional structure includes an ion conductor. A power source is coupled to the three-dimensional structure in which an ionic current is generated to control the temperature of the reactor. In some embodiments, the three-dimensional structure includes a multi-layer structure having alternating layers of an ionic conductor and an electronic conductor. In some embodiments, the system includes a controller in operable communication with a power source. The controller can control the amount of thermal energy input to the reactor by adjusting parameters of the power supply. In some embodiments, the catalyst is disposed in a three-dimensional structure.

The separation membrane is a separation membrane for hydrogen gas and gas (L), the activation energy Ep (S) (kJ / mol) of the hydrogen gas with respect to the permeability P (S) (mol / (m2 * s * Pa)) of the separation membrane within the temperature Tam (DEG C) range satisfying the following formula (1-I), and the activation energy Ep (L) (kJ / mol) of the gas L (excluding hydrogen gas) with respect to the permeability P (L) (mol / (m2 * s * Pa)) of the separation membrane within the same temperature range satisfy the following formula (1-II). 5 (DEG C) < = Tam (DEG C) < = 200 (DEG C)... (1-I), Ep (L) lt; ep (S)... (1-II) can provide a separation membrane for separating / recovering hydrogen gas, a separation membrane laminate, a separation module or separation column, a hydrogen gas recovery system, and a method for separating / recovering hydrogen gas, in which the hydrogen gas is separated / recovered from a hydrogen-oxygen mixed gas, even if supplied at a lower pressure, and the hydrogen gas is separated / recovered from the hydrogen-oxygen mixed gas. Hydrogen gas can be safely and efficiently separated and recovered from a mixed gas containing molecules having relatively close dynamic molecular diameters.

The present invention relates to the field of medicine, and more particularly to restorative medicine. It can be used to enhance a person's adaptive capabilities through exposure of the body to a hypoxic effect. The method is carried out during the first half of the day. It is essential that oxygen saturation and heart rate are measured continuously up to and during exposure to the effect. A hypoxic gas mixture having an oxygen concentration of up to 16% is fed to the patient, wherein a feed rate of 45-52 l / min is maintained for an exposure time of 3 minutes. Hydrogen for inhalation is then fed continuously via a nasal cannula while the feed rate of the hypoxic mixture is reduced to 20 l / min for a period of from 5 to 10 min. When saturation decreases to 80%, the oxygen concentration is automatically increased to 21% until the patient's oxygen saturation and heart rate reach their initial values. The duration of a single procedure, including alternating breathing of the gas mixture and the mixture with hydrogen, is 40-60 minutes, wherein a single procedure consists of 4-5 cycles. Between 10 and 21 procedures are performed at one day intervals. The method enhances the adaptive restorative capability of the body without inducing side effects.

The present invention addresses the problem of providing a modified metal oxide particulate material having high dispersibility even when the amount of a modified material is small. The dispersibility can be improved by interposing a modifying material between particles of the metal oxide particulate material. In particular, by suppressing the reaction between pieces of the modifying material, a sufficient effect was successfully exhibited even if the amount of the modifying material was reduced. Specifically, this modified metal oxide particulate material comprises: a metal oxide particulate material having, on the surface thereof, a functional group other than a phenyl group; and a modifying material that comprises a silicon-containing compound having a phenyl group and that adheres to the surface of the metal oxide particulate material. After the modified metal oxide particulate material is washed with methyl ethyl ketone, the value of C / H calculated from the surface area H (m2) and the carbon content C (mass%) per gram is reduced by at least 0.03 but less than 0.1, the particle gauge is 20 μm or less, and the post-wash C / H value is not more than 0.07.

The disclosure provides a method of producing hydrogen. The method comprises conducting a thermochemical reaction by contacting an active reagent and a basic aqueous solution, to thereby cause water from the basic aqueous solution to react with the active reagent and to produce hydrogen and a basic aqueous solution comprising an oxidised product. The method further comprises disposing the basic aqueous solution comprising the oxidised product in an electrochemical cell comprising an anode and a cathode, such that at least a portion of the cathode contacts the solution; and conducting an electrochemical reaction by applying a voltage across the anode and the cathode to produce hydrogen, oxygen and the active reagent. The active reagent comprises a metal or metal ion in a first oxidation state and the oxidised product comprises the metal or metal ion in a second oxidation state which is higher than the first oxidation state.