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| Number | Title | Issue Date |
| 8173005 | Upgrading waste heat with heat pumps for thermochemical hydrogen production This invention relates to hydrogen production using combined heat pumps and a thermochemical cycle. Low grade waste heat can be upgraded to higher temperatures via salt/ammonia and/or MgO/vapor chemical heat pumps, which release heat at successively higher temperatu... | 05/08/2012 |
| 8157980 | Multi-cell dual voltage electrolysis apparatus and method of using same A method and apparatus for achieving high output efficiency from an electrolysis system (100) using a plurality of electrolysis cells all located within a single electrolysis tank (101) is provided. Each individual electrolysis cell includes a membrane... | 04/17/2012 |
| 7955491 | Methods, devices, and infrastructure systems for separating, removing, compressing, and generating hydrogen Hydrogen pumps include a proton conducting medium, and a nonporous hydrogen permeable anode electrode and/or nonporous hydrogen permeable cathode electrode. For example, the electrodes may be a solid thin metallic film such as palladium or a palladium alloy such as ... | 06/07/2011 |
| 7951283 | High temperature electrolysis for syngas production Syngas components hydrogen and carbon monoxide may be formed by the decomposition of carbon dioxide and water or steam by a solid-oxide electrolysis cell to form carbon monoxide and hydrogen, a portion of which may be reacted with carbon dioxide to form carbon monox... | 05/31/2011 |
| 7909980 | Process for the production of hydrogen Process for production of hydrogen of high purity by photoelectrochemical means with low energy consumption. The process is carried out in an electrochemical cell which comprises at least one anodic chamber with an anode and at least one cathodic chamber with a cath... | 03/22/2011 |
| 7906006 | Steam electrolysis The present invention relates to a method of producing hydrogen comprising: contacting steam (20) with a proton conducting membrane (7) supported on a porous redox stable substrate (8), through said substrate (8). The membrane (7) ... | 03/15/2011 |
| 7906007 | Optimizing photovoltaic-electrolyzer efficiency An array of photovoltaic (PV) module(s) is arranged in series and/or parallel electrical connection to deliver direct current electrical power to an electrolyzer to produce hydrogen. The electric power is delivered by the array at its maximum power point (Vmpp | 03/15/2011 |
| 7850838 | Cold weather hydrogen generation system and method of operation A system for providing hydrogen gas is provided. The system includes a hydrogen generator that produces gas from water. One or more heat generation devices are arranged to provide heating of the enclosure during different modes of operation to prevent freezing of co... | 12/14/2010 |
| 7790013 | Storing and transporting energy Among other things, hydrogen is released from water at a first location using energy from a first energy source; the released hydrogen is stored in a metal hydride slurry; and the metal hydride slurry is transported to a second location remote from the first locatio... | 09/07/2010 |
| 7722757 | Process for the production of hydrogen from water A method and device for the production of hydrogen from water and electricity using an active metal alloy. The active metal alloy reacts with water producing hydrogen and a metal hydroxide. The metal hydroxide is consumed, restoring the active metal alloy, by applyi... | 05/25/2010 |
| 7588676 | Base-facilitated production of hydrogen from carbonaceous matter A base-facilitated process for producing hydrogen. Hydrogen is produced from a reaction of carbonaceous matter with a base and water, preferably through the formation of a bicarbonate or carbonate by-product. The base-facilitated hydrogen-producing reactions are the... | 09/15/2009 |
| 7494581 | Production of hydrogen from non-cyclic organic substances having multiple alcohol functionality A method of producing hydrogen gas from a reaction of an organic substance having multiple alcohol functionality with a base. Hydrogen can be produced in a reaction of a base with an organic substance having multiple alcohol functionality that may proceed through th... | 02/24/2009 |
| 7402283 | Electrolytic eluent generator and method of use An acid or base is generated in an aqueous solution by the steps of: (a) providing a source of first ions adjacent an aqueous liquid in a first acid or base generation zone, separated by a first barrier (e.g., anion exchange membra... | 07/22/2008 |
| 7381313 | Integrated hydrogen production and processing system and method of operation A method of operating an integrated hydrogen production and processing system is provided. The method includes operating an electrolyzer to produce hydrogen from water and utilizing heat generated from the electrolyzer to increase a temperature of an electrolyte in ... | 06/03/2008 |
| 7360563 | System and method for refueling a hydrogen vessel Electrochemical systems and methods of operating the systems are disclosed herein. In one embodiment, a method for operating an electrochemical system, comprises: forming hydrogen gas in an electrolysis cell, maintaining the hydrogen gas at a temperature sufficient ... | 04/22/2008 |
| 7338590 | Water-splitting using photocatalytic porphyrin-nanotube composite devices A method for generating hydrogen by photocatalytic decomposition of water using porphyrin nanotube composites. In some embodiments, both hydrogen and oxygen are generated by photocatalytic decomposition of water. ... | 03/04/2008 |
| 7325392 | Control system for catalytic processes The present invention provides methods and systems for controlling a catalytic process. The control system includes: an electroconductive support having a layer of a catalyst thereon; a first electrode in contact with said electroconductive support; a second electro... | 02/05/2008 |
| 7326329 | Commercial production of hydrogen from water Large quantities of low cost hydrogen free of carbon oxides are required as fuel for the hydrogen economy. Commercial quantities of hydrogen can be produced from the electrolysis of water using a diaphragm-less electrolytic cell. The electrolytic cell has an anode c... | 02/05/2008 |
| 7316859 | Storage system and method for supplying hydrogen to a polymer membrane fuel cell A hydrogen storage system and method having a main hydrogen storage site that contains a sufficient amount of hydrogen for a fuel cell employing a polymer membrane to generate power in accordance with a predetermined electrical power requirement. A main storage site... | 01/08/2008 |
| 7314539 | Pressure electrolyzer and method for operating one such electrolyzer The invention discloses a pressure electrolyzer comprising a pressure vessel (2) and an electrolytic-cell block (3) arranged in the pressure vessel (2) and containing a plurality of electrolytic cells (4) combined in the form of a stack. ... | 01/01/2008 |
| 7291255 | Method and apparatus for producing high-purity hydrogen High-purity hydrogen is recovered from a pyrolysis gas, composed mainly of hydrogen and carbon monoxide, produced by pyrolysis of an organic material such as biomass. A method for producing such high-purity hydrogen includes supplying a reducing gas produced by pyro... | 11/06/2007 |
| 7291191 | Fuel cell cartridge filters and pressure relief Described herein is a portable storage device that stores a hydrogen fuel source. The storage device includes a bladder that contains the hydrogen fuel source and conforms to the volume of the hydrogen fuel source. A housing provides mechanical protection for the bl... | 11/06/2007 |
| 7285192 | Pressure electrolyzer and method for switching off a pressure electrolyzer A pressure electrolyzer having a pressure reservoir, an electrolytic cell block containing a number of electrolytic cells and positioned in the pressure reservoir, the electrolytic cells each containing anodes and cathodes, and an electrolyte circulatory system for ... | 10/23/2007 |
| 7273044 | Hydrogen fuel system for an internal combustion engine A hydrogen fuel system for an internal combustion engine includes an electrolyzer for generating hydrogen and oxygen gases. The engine exhaust may be recycled through the electrolyer where it is converted to hydrogen and oxygen. A water reservoir in fluid communicat... | 09/25/2007 |
| 7261874 | Gas phase electrolyzer process for producing hydrogen The invention provides a method for a sulfur based hydrogen production cycle wherein the sulfur products are maintained in a gaseous state throughout the cycle. The cycle includes a decomposition of a gaseous phase sulfur trioxide to sulfur dioxide and water in a de... | 08/28/2007 |
| 7258779 | Method and means for hydrogen and oxygen generation A method and means for producing a combustible mixture of hydrogen and oxygen by electrolysis of water using a pulsed application of water onto electrodes while applying an electrical potential between electrodes and where the electrodes are not immersed in the wate... | 08/21/2007 |
| 7241522 | Regenerative electrochemical cell system and method for use thereof An exemplary embodiment of a regenerative electrochemical cell system, comprises: a fuel cell module, an electrolysis module, a heat exchange, and an inverted hydrogen storage device. The fuel cell module can comprise a fuel cell hydrogen inlet in fluid communicatio... | 07/10/2007 |
| 7226529 | Electrolyzer system to produce gas at high pressure An apparatus and method to produce hydrogen gas a high pressure is disclosed. An electrolyzer is located inside a pressure vessel that is pressurized with high pressure water. The high pressure water is provided to both the anode and cathode sides of the electrolyze... | 06/05/2007 |
| 7220391 | UV photochemical option for closed cycle decomposition of hydrogen sulfide Methods and systems for separating hydrogen and sulfur from hydrogen sulfide(H2S) gas. Hydrogen sulfide(H2S) gas is passed into a scrubber and filtration unit with polysulfide solution. Interaction frees elemental sulfur which is filtered, exce... | 05/22/2007 |
| 7182851 | Electrolytic commercial production of hydrogen from hydrocarbon compounds This invention concerns the commercial production of electrolytic hydrogen from coal and other hydrocarbon compounds. The process provides high capacity and low impedance compared to conventional diaphragm electrolytic cells. The hydrogen produced is suitable for co... | 02/27/2007 |
| 7181316 | Energy distribution network A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. ... | 02/20/2007 |
| 7175751 | Method and apparatus for electrorefining impure hydrogen A method and system for electrochemically purifying an impure stream of hydrogen. Hydrogen is absorbed into a gas diffusion anode from the impure hydrogen stream and oxidized to form hydrogen ions and electrons which are released into an alkaline solution. An electr... | 02/13/2007 |
| 7168465 | Electrochemical cell system, hydrogen dispensing apparatus, and method for dispensing hydrogen Disclosed herein are mobile hydrogen gas dispensing apparatus, and methods for dispensing hydrogen gas. In one embodiment, the mobile hydrogen gas dispensing apparatus comprises a first outlet and a second outlet. The first outlet comprises a first valve, a first hy... | 01/30/2007 |
| 7153409 | Electrochemical cell system and method of operation In one embodiment, the electrochemical system comprises an electrochemical cell and hydrogen storage in fluid communication with the hydrogen electrode, the hydrogen storage comprising at least one of carbon nanotubes and carbon nanofibers. In one embodiment, the me... | 12/26/2006 |
| 7141323 | Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell system The invention relates to fuel cell systems and associated methods of operation where an electrochemical cell such as a fuel cell is used as an electrochemical hydrogen separator to separate hydrogen from a process stream (e.g., reformate or synthesis gas), or as an ... | 11/28/2006 |
| 7138046 | Process for production of hydrogen from anaerobically decomposed organic materials A process for the production of hydrogen from anaerobically decomposed organic materials by applying an electric potential to the anaerobically decomposed organic materials, including landfill materials and sewage, to form hydrogen, and for decreasing the time requi... | 11/21/2006 |
| 7132182 | Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell system The invention relates to fuel cell systems and associated methods of operation where an electrochemical cell such as a fuel cell is used as an electrochemical hydrogen separator to separate hydrogen from a process stream (e.g., reformate or synthesis gas), or as an ... | 11/07/2006 |
| 7128103 | Hydrogen fueling system Disclosed herein are an electrochemical system, a hydrogen gas fueling system, a cascade system, and methods for using the same. The hydrogen gas fueling system comprises a multiple-stage compressor disposed in fluid communication with a hydrogen gas source, the com... | 10/31/2006 |
| 7125480 | Methods for affecting the ultra-fast photodissociation of water molecules A method for the ultra-fast photodissociation of water molecules into H2 and O2 gases is presented. Water vapor is initially produced and supplied to a photolysis bottle. Within the photolysis bottle, the water vapor is illuminated by a light s... | 10/24/2006 |
| 7119240 | Method for converting natural gas to olefins A process for converting natural gas to an olefin includes heating the gas to a selected range of temperature to convert a fraction of the gas stream to reactive hydrocarbons, primarily ethylene or acetylene, and reacting with hydrogen in the presence of a catalyst ... | 10/10/2006 |
