Abstract:
A method for synthesis of MgH 2 /Ni nanocomposites includes balancing magnesium (Mg) powder in a ball milling container with helium (H 2 ) gas atmosphere; adding a plurality of nickel (Ni) milling balls to the container; introducing hydrogen (¾) gas to the container to form a MgH 2 powder; milling the Mg¾ powder using the Ni -balls as milling media to provide MgH 2 /Ni nanocomposites. The milling can be high-energy ball milling, e.g., under 50 bar of hydrogen gas atmosphere. The high-energy ball milling can be reactive ball milling (RBM). The method can be used to attach Ni to MgH 2 powders to enhance the kinetics of hydrogenation/dehydrogenation of MgH 2 .
Abstract:
A process and apparatus where unipolar electrolysis is used to remove the electron from the hydrogen gas and the proton is stored in a very small volume in a high surface area electrode or in a conducting aqueous or non-aqueous conductive liquid containing fine particles of hydrogen receptors and unipolar electrolysis is used to add electrons to the hydrogen proton to produce the hydrogen gas when it is required as a fuel. The process and apparatus have applications in electric power generation from renewable energy and the use of hydrogen in land, water and air vessels.
Abstract:
A system (100) for distribution of hydrogen gas in a metal hydride reactor (109) is disclosed. The system (100) comprises a hydrogen distribution conduit (102) positioned within a metal tube (101) so as to define an annular space between the hydrogen distribution conduit (102) and the outer metal tube (101). The hydrogen distribution conduit (102) provides a flow passage for the hydrogen gas. A metal sponge matrix (103) containing hydrogen-storing metal powder or hydrogen-storing alloy powder is filled in the annular space. The system provides a more uniform distribution of hydrogen across the particles of the hydrogen- storing metal/alloy powder, provides mechanical support to the hydrogen distribution conduit, improves the thermal conductivity of the powdered metal/alloy bed and reduces the size and production cost of the reactor (109).
Abstract:
Die vorliegende Erfindung betrifft einen Wasserstoffspeicher umfassend ein hydrierbares Material, ein Verfahren zur Herstellung des Wasserstoffspeichers, sowie eine Vorrichtung zur Herstellung des Wasserstoffspeichers.
Abstract:
The invention relates to single crystals of metal-organic framework materials comprising at least one aluminium metal ion, processes for preparing the same, methods for employing the same, and the use thereof. The invention also relates to monocrystalline or polycrystalline aluminium metal-organic frameworks.
Abstract:
Eine Anlage zum Speichern von Energie umfasst eine Wasserstofferzeugungs-Einheit (12) zum Erzeugen von Wasserstoff, eine Wasserstoffspeicherungs-Vorrichtung (17) zum Speichern von Wasserstoff mit einer Belade-Einheit (16) zum Beladen eines Trägermediums mit dem in der Wasserstofferzeugungs-Einheit (12) erzeugten Wasserstoff und mit einer Entlade-Einheit (22) zum Entladen des Wasserstoffs von dem beladenen Trägermedium, und eine Wärme-Vorrichtung (4) zum Erzeugen und Speichern von Wärme, wobei die Wärme-Vorrichtung (4) mit der Entlade-Einheit (22) zum Bereitstellen von Wärme verbunden ist.
Abstract:
A method of downhole steam generation comprising determining a desired level of electrical conductivity for water to be converted to steam in a downhole location, acquiring a main feedwater supply, wherein water of the main feedwater supply has an electrical conductivity lower or higher than the desired level, mixing water of the main feedwater supply with water from one or more sidestreams to generate a resultant stream with an electrical conductivity of about the desired level, pumping the resultant stream to the downhole location, and passing an electrical current through the resultant stream in the downhole location to generate steam.
Abstract:
A heat engine that includes reversible metal hydride pairs of a same material type. One of the pairs alternately acts as a positive hydrogen displacement pump and the other simultaneously acts as hydrogen storage and heat pump. A hydrogen receiver is thermally coupled via a network of heat pipes to a thermal battery and heat pump, which uses the hydrogen mass flow from hydrogen pump and the heat rejection from hydrogen storage to power to heat pump and thermal battery and initiate a sinusoidal signal which makes heat engine a hydride chemical oscillator.
Abstract:
Die Erfindung betrifft ein Verfahren zur Speicherung von elektrischer Energie, umfassend die Schritte a) Erzeugung von Methan aus Wasser und Ruß unter Verwendung von elektrischer Energie, b) Speichern des Methans, c) Spalten des Methans in Wasserstoff und Ruß, wobei der Wasserstoff zur Energieerzeugung verwendet wirdoder Energieerzeugung durch Umsetzen des Methans in Ruß und Wasser in einer zyklischen Bromierungs-Oxidations-Prozess, wobei der bei der Methanspaltung oder dem zyklischen Bromierungs-Oxidations-Prozessgemäß Schritt c) anfallende Ruß aufgefangen wird und beim erneuten Durchlaufendes Verfahrens für die Methanerzeugung in Schritt a) verwendet wird, so dass ein geschlossener Kohlenstoffkreislauf entsteht, sowie ein System umfassend eine Strom-Methan-Umwandlungsanlage, wobei elektrischer Strom zusammen mit Ruß und Wasser in Methan umgewandelt wird, sowie eine Methan-Strom-Umwandlungsanlage, wobei Methan unter Abspaltung von Ruß in Wasserstoff umgesetzt wird.
Abstract:
The invention relates to a catalyst according to the formula lrCI(cod)(NHC)] + nP (n = 2, 3 or 4), or [lr(cod)(NHC)(P)] + nP (n = 1, 2 or 3), which is suitable to decompose formates in an aqueous reaction system, and for the production of hydrogen gas or hydrogenation of carbonates, wherein Ir means irydium; CI means chlorine; cod means 1,5-cyclooctadiene; NHC means N-heterocyclic carbene, preferably 1-R-3-methylimidasolium chloride, wherein R means C 1-5 alkyl es P means 1,3,5-triaza-7-phosphaadamantane (pta), monosulphonated triphenilphosphine ( m tppms), trisulphonated triphenylphosphine ( m tppts), or four times sulphonated diphenylphosphynopropane (dpppts). Furthermore, the invention relates to a process for the preparation of the catalyst accoring to the invention. Further, the invention relates to a process for the decomposition of formate in aqueous reaction system, and for the production of hydrogen gas free of CO x , still further, a process for the hydrogenation of hydrogen carbonate in an aqueous reaction system, as well as the production of the respective formate. Further, the invention relates to a process for the decomposition of formate accoring to the invention, and the hydrogenation of the carbonate generated in the same reaction system. The invention relates to a hydrogen storage system based on the process according to the invention, preferably battery or fuel cell, and the use thereof.