摘要:
Integrated Systems and methods for producing ethylene and hydrogen are described. The systems and methods integrate a photocatalytic water splitting (PCWS) process with the oxidative dehydrogenation of ethane (ODhE) process to produce hydrogen and ethylene production.
摘要:
Embodiments of the invention are directed to methods, processes, and systems for safely and reliably purifying hydrogen from a gas mixture containing hydrogen and oxygen. A process comprises injecting a flammability suppressor into a photocatalytic water-splitting reactor to form a suppressed feed source gas, introducing the suppressed feed source gas to a first membrane separation unit, and collecting a hydrogen product gas stream.
摘要:
This disclosure provides systems, methods, and apparatus related to a solar fuel generator. In one aspect, a device includes a photovoltaic cell, the photovoltaic cell having a first surface and a second surface, a mesh disposed on the first surface of the photovoltaic cell, and a polymer disposed on the mesh and on the first surface of the photovoltaic cell. The mesh has a catalyst disposed thereon. The polymer covers the first surface of the photovoltaic cell, with at least a portion of the mesh not being covered with the polymer.
摘要:
A method of producing hydrogen comprising receiving a sour gas comprising CO 2 , H 2 S, and ammonia from a sour water stripper; introducing the sour gas to an absorption system to produce an ammonia rich gas and a sulfide rich gas, wherein the ammonia rich gas comprises ammonia and CO 2 , and wherein the sulfide rich gas comprises H 2 S and CO 2 ; compressing the ammonia rich gas in a compressing unit to a pressure of 400-600 psig to produce a compressed ammonia rich gas; introducing the compressed ammonia rich gas to an ammonia cracker unit comprising a catalyst to produce a cracked gas, wherein the ammonia cracker unit is characterized by a cracking temperature of 450-550°C, and wherein the cracked gas comprises hydrogen, nitrogen, and CO 2 ; and introducing the cracked gas to a PSA unit to produce hydrogen and a PSA tail gas, wherein the PSA tail gas comprises nitrogen and CO2.
摘要:
Photocatalysts and methods of using the same for producing hydrogen and oxygen from water are disclosed. The photocatalysts include a photoactive layer having a thickness of 10 nanometers (nm) to 1000 nm and a plasmonic metal layer having a thickness of 2 nm to 20 nm and having surface plasmon resonance properties in response to ultra-violet and/or visible light, wherein the plasmonic metal layer is positioned proximal to the photoactive layer.
摘要:
Method for the irreversible dosage of hydrogen in LED light bulbs by means of heating an irreversible hydrogen dispenser containing at least an active material for hydrogen release.
摘要:
Disclosed is a method for producing oxygen (O 2 ) and hydrogen (H 2 ) from water, the method comprising (a) obtaining a composition comprising (i) a hybrid catalyst comprising an organo-iridium catalyst deposited on the surface of a titanium dioxide catalyst, and (ii) an aqueous solution having a buffer or having a base wherein the base is present in the aqueous solution in an amount at least 4 times equivalent with respect to the organo-iridium catalyst present on the hybrid catalyst, and (b) exposing the composition to light to produce O 2 and H 2 from water molecules in the aqueous solution.
摘要:
L'invention concerne un procédé de préparation de dihydrogène par photodissociation de l'eau par irradiation au moyen d'un rayonnement UV, visible ou IR proche, comprenant l'utilisation d'un composite photocatalytique comprenant - au moins un composé semi-conducteur à bande interdite allant de 2 à 5 eV; - des nanoparticules de diamant. L'invention concerne également un tel composite photocatalytique ainsi que des procédés pour sa préparation.