172results about "Oxygen/ozone/oxide/hydroxide" patented technology

The present invention belongs to the technical field of design and synthesis of carbon-monoxide and carbon-dioxide-based Fischer-Tropsch synthesis catalysts, and discloses a novel iron-based Fischer-Tropsch synthesis catalyst containing both iron and carbon and a synthesis method and use thereof. The present invention specifically relates to a catalyst mixture for use in hydrogenation of CO and / or CO2, which catalyst mixture comprises i) iron oxide promoted by alkali metal, alkaline earth metal or transition metal, and ii) iron carbide. The invention further relates to a method for production of iron carbide composite comprising different iron carbides, and the use of said carbide composite in combination with alkali metal, alkaline earth metal or transition metal promoted iron oxide for use in hydrogenation of CO and / or CO2.

There is provided an aquaculture assembly for generating compressed air and concentrated oxygen. The assembly includes an aeration system. The assembly includes an oxygen concentrator. The assembly includes a compressor operatively connected to both the aeration system and the oxygen concentrator. The compressor selectively directs compressed air to the aeration system, the oxygen concentrator or both the aeration system and the oxygen concentrator. The assembly may include a variable speed engine directly coupled to the compressor. There is also provided oxygen generation system with a fluid-air heat exchanger configured to receive therethrough and cool compressed air. A filtration unit, downstream of the fluid-air exchanger, removes liquid from the compressed air so cooled. An oxygen concentrator, downstream of the filtration unit, includes one or more vessels via which the compressed air is selectively received. Each said vessel includes an adsorbent and a desiccant therewithin.

The invention relates to a method for simultaneously preparing lithium hydroxide and sulfuric acid. The invention provides a method for simultaneously preparing lithium hydroxide and sulfuric acid, which comprises the following steps: preparing a bipolar membrane electrodialysis device which comprises a first bipolar membrane, an anion exchange membrane, a cation exchange membrane and a second bipolar membrane, and forming an acid chamber between the first bipolar membrane and the anion exchange membrane, a salt chamber is formed between the anion exchange membrane and the cation exchange membrane, and an alkali chamber is formed between the cation exchange membrane and the second bipolar membrane; a lithium sulfate aqueous solution is added into a salt chamber of the bipolar membrane electrodialysis device, a sulfuric acid aqueous solution is added into an acid chamber, and a lithium hydroxide aqueous solution is added into an alkali chamber; and discharging the desalted solution formed in the salt chamber of the bipolar membrane electrodialysis device, discharging the sulfuric acid aqueous solution formed in the acid chamber, and discharging the lithium hydroxide aqueous solution formed in the alkali chamber.

The present invention relates to an alkaline electrolysis device comprising: - at least one electrolysis cell comprising a reactor chamber which comprises a hydrogen-side reactor chamber region containing the aqueous electrolyte for decomposing the aqueous electrolyte into gaseous hydrogen and an oxygen-side reactor chamber region containing the aqueous electrolyte for decomposing the aqueous electrolyte into gaseous oxygen; - a hydrogen separator connected to the hydrogen-side reactor chamber region for separating the gaseous hydrogen from the aqueous electrolyte introduced into the hydrogen separator; and - an oxygen separator connected to the oxygen-side reactor chamber region for separating the gaseous oxygen from the aqueous electrolyte introduced into the oxygen separator; wherein the hydrogen separator has a first hydrogen separator outlet for removing the aqueous electrolyte having a first hydrogen concentration and a second hydrogen separator outlet for removing the aqueous electrolyte having a second hydrogen concentration that is less than the first hydrogen concentration; and where the first hydrogen separator outlet and the second hydrogen separator outlet are connectable or connected to the reactor chamber.

An apparatus, includes: a first raw material supply unit 110 including a filter housing 111, a supply fan 112, a flow regulator 113, an electronic valve 114, and an air supply line 115, wherein the supply fan 112 is operated to suck in external air, in the process, the HEPA filter (not shown) mounted inside the filter housing 112 filters fine dust and adjusts the air supply flow rate from the flow regulator 113 to the appropriate flow rate and supplies through the supply line 115 to the ion generator 200; a second raw material supply unit 120 including a pressure regulator 122, a flow regulator 123, an electronic valve 124, and an air supply line 125.

This disclosure includes wound dressings and systems with remote oxygen generation for topical wound therapy and related methods. Some systems include a dressing for facilitating delivery of oxygen to the target tissue, the dressing having: a first manifold that defines a plurality of gas passageways and is configured to allow communication of oxygen to the target tissue; a gas-occlusive layer configured to be disposed over the first manifold and coupled to tissue surrounding the target tissue such that: an interior volume is defined between the gas-occlusive layer and the target tissue; and the gas-occlusive layer limits escape of oxygen from the interior volume between the gas-occlusive layer and the tissue surrounding the target tissue; a container outside the interior volume, the container having a sidewall that defines a chamber configured to be in fluid communication with the interior volume; and an oxygen-generating material disposed within the chamber of container and configured to release oxygen when exposed to water.

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.

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 is directed to piezo photocatalytic process for the production of hydrogen from water, wherein the process comprises the steps of: (a) providing non-metal-doped barium titanate which includes at least one defect; (b) contacting the non-metal-doped barium titanate provided in step (a) with water to form a mixture; and (c) subjecting the mixture formed in step (b) to: (i) actinic radiation; and (ii) mechanical force, to produce hydrogen from the water, as well as non-metal-doped barium titanate and methods of production thereof.

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.

An ethylene production apparatus for producing ethylene from a methane-containing gas includes a ceramic membrane having at least one of oxide ion conductivity and proton conductivity; a first catalyst layer that is disposed on a first face of the ceramic membrane and includes a catalyst for accelerating oxidative-coupling-of-methane reaction; a methane supply unit that supplies the methane-containing gas to a space located on the same side as the first face of the ceramic membrane; and a charge transfer unit that transfers an electron from the first face to a second face of the ceramic membrane or transfers a hole from the second face to the first face. The ethylene production apparatus produces ethylene in the first catalyst layer upon supply of the methane-containing gas from the methane supply unit.

The present application relates to a method and a plant (10) for processing an oxygen gas which is produced by electrolysis of water and / or steam and is used as an oxidizing agent in a metallurgical facility (1), wherein the oxygen gas produced by electrolysis is subjected to at least one drying step, via which the accompanying gases hydrogen and water contained in the oxygen gas are removed, preferably quantitatively.

A heat exchanger comprises a plurality of cells formed by a stack of alternate planar flow-guide plates (1) and heat transfer plates (2), each heat transfer plate having at least three apertures (3, 4, 6) therethrough, each aperture defining a part of a respective one of at least three fluid flow paths in the heat exchanger. Each flow-guide plate has apertures therethrough corresponding to at least two of the flow paths and a larger aperture (5, 7, 8) therethrough configured to guide fluid in the remaining flow path across the face of the heat transfer plates between which the flow-guide plate is located, each successive flow-guide plate in the stack forming part of a different flow path from the preceding one in the stack.

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.

The disclosure provides a method of producing hydrogen. The method comprises conducting a thermochemical reaction by contacting a metal, or an alloy thereof, with steam to produce a metal oxide and / or a metal hydroxide and hydrogen. The method then comprises contacting the metal oxide and / or the metal hydroxide produced in the thermochemical reaction with water or a basic aqueous solution to produce a solution comprising a metal ion. Finally, the method comprises conducting an electrochemical reaction by applying a voltage across an anode and a cathode, whereby at least a portion of the cathode contacts the solution comprising the metal ion, to produce hydrogen, oxygen and the metal, or the alloy thereof.

A processing system and method of producing a particulate material are provided. The processing system includes a system inlet connected to one or more gas lines to deliver one or more gases into the processing system, a buffer chamber, a dispersion chamber, a heating assembly, a reaction chamber and a system outlet for delivering particulate material out of the processing system. The method includes delivering one or more gases via a system inlet into a buffer chamber of a processing system, jetting a liquid mixture into one or more streams of droplets using one or more power jet modules into the processing system, delivering flows of one or more heated gases via a heating assembly, forming a reaction mixture and processing the reaction mixture at a reaction temperature into a product material inside the reaction chamber.

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.

To provide a hydrogen production device in which the total light utilization efficiency is made higher than before by efficiently utilizing a wide range of wavelength components from ultraviolet light of sunlight to infrared light including visible light.SOLUTION: A hydrogen production device that has a photocatalyst and generates hydrogen from water comprises a wavelength separation unit that separates sunlight into wavelengths, an infrared light conversion unit that converts infrared light separated by the wavelength separation unit into visible light, and an ultraviolet light conversion unit that converts ultraviolet light separated by the wavelength separation unit into visible light.SELECTED DRAWING: Figure 2

The storage apparatus according to the invention, a geo hydrogen storage system, is a system consisting of a plurality of groundwater wells drilled into the ground. Hydrogen is produced by electrolysis using green energy. The hydrogen and the associated oxygen are stored in and recovered from cartridges installed in said wells being flooded by the groundwater and located at appropriate distances from each other. The system uses closed-circuit circulating water to transport the gases generated in electrolysis in the form of bubbles. The gases are separated from the circulating water by volume expansion and form gas bubbles when they reach the corresponding cartridge. This gas bubble will, with continued operation, squeeze larger and larger volume of water from the groundwater in the cartridge, thereby pressurizing the system.

The present invention relates to a positive electrode active material precursor for a lithium secondary battery, a positive electrode active material for a lithium secondary battery, and a method for producing a positive electrode active material, wherein the positive electrode active material precursor for a lithium secondary battery has an XRD peak value of I 001 / I 100 Ratio is 0.5 to 6, I 001 / I 101 Ratio is 0.6 to 3, I 001 / I 102 Ratio is 2.5 to 8, I 001 / I 110 Ratio is 1.5 to 11, I 001 / I 111 Ratio is 2-14, I 100 / I 001 Ratio is 0.1 to 3.1, I 100 / I 101 Ratio is 0.1 to 1.5, I 100 / I 102 Ratio is 1.0 to 7.3, I 100 / I 110 Ratios between 1.5 and 3.2, and I 100 / I 111 The ratio can satisfy at least one of 2.5 to 5.3.

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.

Metal-containing precursor materials are contacted with an initial nitric acid solution containing a predetermined nitric acid concentration, at a predetermined temperature, and a predetermined atmospheric pressure to remove at least one valuable metal to form a nitrates solution having other metals therein. The resultant nitrate solution is transported to a converter. A sulfuric acid solution is introduced along with nitrate solution into the converter to convert the nitrates into sulfates in excess sulfuric acid solution. The formed solid sulfates and sulfuric acid are separated nitric acid solution containing a predetermined NOx concentration is recovered from the vapor stream by condensation therein.

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.

To provide an oxygen isotope concentrator where the reduction of an oxygen treatment amount can be performed by simplifying device configuration.SOLUTION: An oxygen isotope concentrator 1 comprises: a plurality of device groups having an ozone generation device 11, a carbon tetrafluoride feeder 17, an oxygen separator 12, an ozone photolysis device 13, a collector 14 and a concentrator 15; one or more oxygen supply passages 16 introducing oxygen separated at the concentrator 15 of the kth group (1≤k≤(n-1)) to the ozone generation device 11 of the (k+1)th group; and one or more mixed gas return passages 23' by which a mixed gas of ozone separated at the concentrator 15 of any jth group (2≤j≤n) and carbon tetrafluoride is introduced to any one of the first group to the (j-1) group.SELECTED DRAWING: Figure 1

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 present invention relates to a pyrogenic process for manufacturing metal oxides or metalloid oxides wherein a metal precursor and / or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a part of the hydrogen has been obtained from electrolysis of water or an aqueous solution, using electrical energy, at least a part of which has been obtained from a renewable energy source, and wherein at least a part of the thermal energy of the flame is transferred to a first heat transmission medium by means of at least one exchanger, thereby heating the first heat transmission medium to a maximal temperature in the range between 80 and 150 °C.

The present invention relates to a pyrogenic process for manufacturing metal oxides or metalloid oxides wherein a metal precursor and / or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a part of the hydrogen and at least a part of the oxygen have been obtained from electrolysis of water or an aqueous 5 solution, using electrical energy, at least a part of which has been obtained from a renewable energy source, and wherein water (H2O) is introduced into the flame, and wherein the total molar ratio TRON of oxygen gas to nitrogen gas TRON = n(O2) : n(N2) of all streams introduced into the flame prior to ignition combined is TRON ≥ 0.25 and ≤ 1. 10