Abstract:
Methods and apparatus for improving the loading ratio of a hydrogen gas in a transition metal are disclosed. Blocking desorption sites on the surface of a metallic structure increases the partial hydrogen/deuterium pressure when the absorption and desorption processes reach an equilibrium. The higher the number of desorption sites that are blocked, the higher the equilibrium pressure can be reached for attaining a higher hydrogen loading ratio. Moreover, since hydrogen desorption occurs at grain boundaries, reducing grain boundaries is conducive to reducing the hydrogen desorption rate. Methods and apparatus for increasing grain sizes to reduce grain boundaries are also disclosed.
Abstract:
A device comprising a magnetic element, which comprises a magnetic material, wherein the magnetic element is adapted to absorb hydrogen to form hydride. The magnetic aspect of the system enhances the hydrogen storage. Also disclosed is a metal hydride element comprising a magnetic material and absorbed hydrogen. The magnetic element and the metal hydride element can be an electrode. Further disclosed are methods for making and using the electrode.
Abstract:
Un dispositif de piégeage de gaz inflammables tels l'hydrogène comprend des moyens actifs (3) à l'intérieur d'une enveloppe (1) close sauf à des ouvertures obturées par des filtres (2) ne laissant normalement passer que les gaz à piéger. Le piégeage entretient une dépression à l'intérieur de l'enveloppe, qui aspire continuellement les gaz produits à l'extérieur. Le piège peut fonctionner sans aucun entretien et pendant de longues durées, y compris dans un milieu complètement clos.
Abstract:
Un matériau de stockage de l'hydrogène est préparé par un procédé comprenant une opération de déformation plastique sévère choisie parmi le laminage à froid, le forgeage rapide et l'extrusion coudée : - d'un matériau métallique choisi parmi un métal et un alliage à base dudit métal ou - d'un composé à base d'un matériau métallique choisi parmi un métal et un alliage à base dudit métal, dans lequel a été ajouté un hydrure dudit métal ou un hydrure dudit alliage, Lorsque l'opération de déformation plastique sévère est réalisée sur le matériau métallique, elle est suivie d'une opération d'ajout au matériau métallique d'un hydrure dudit métal ou d'un hydrure dudit alliage et d'une opération de dispersion.
Abstract:
Abstract A continuous process for the production of disilane is disclosed which comprises a transition metal catalyzed transformation of monosilane (monosilane). Hydrogen produced in said transformation is removed from the process by the use of a semi-permeable membrane or by an absorbent.
Abstract:
Thin nanostructured layers on surfaces of nickel or its alloys for quickly achieving high hydrogen adsorption values (H/Ni ~ 0.7) through direct metal/gas contact. The said layers are produced by a process comprising the step of oxidising the said surfaces, applying a film of aqueous silica sol to them, subsequent heating in an -oxidising atmosphere and final activation through reduction in a reducing atmosphere.
Abstract:
A solar energy collection and storage system and a method of collecting and storing solar energy. The system includes a device for focusing solar energy onto a reaction chamber for the conversion of metal hydride to liquid metal and hydrogen, a metal/metal hydride chamber containing a metal/metal hydride mixture, a liquid transport conduit extending from the metal/metal hydride chamber to the reaction chamber to transport liquid metal hydride to the reaction chamber, a return conduit for transporting liquid metal to the inner pressure chamber, and a hydrogen storage system.
Abstract:
The invention relates to a method for storing industrial gases which allows the density of the industrial gases stored under pressure to be increased without increasing the pressure. The accumulator is especially suitable for use as a tank of vehicles that are operated with combustible gases, such as natural gas or hydrogen. The industrial gas is stored at a temperature close to its critical point and at a pressure higher than its critical pressure up to a maximum of 1200 bar. The accumulator operating according to the method of the invention comprises a thermally insulated, pressure-tight container (1, 10) which has a closable opening (4) for withdrawal and filling and which is designed for internal pressures up to a maximum of 1200 bar. The industrial gas is cooled by means of a refrigerating machine (2) and/or by means of a relaxation unit (18) which is used to relax the emerging industrial gas in a controlled manner.
Abstract:
The invention relates to a method for producing a storage material for hydrogen, wherein a metal hydride or a complex metal hydride, optionally as an element of an alloy, is mixed with an organic carrier liquid and the mixture is then ground. According to the invention, the mixing ratio of the metal hydride, the complex metal hydride or the alloy to the carrier liquid and the grinding parameters are selected in such a manner that a suspension of the metal hydride, of the complex metal hydride or of the alloy is formed in the carrier liquid after grinding, resulting in the agglomeration of the grains to give smaller particles when the suspension dries than according to prior art method according to which a slurry is formed after grinding. Both the storage capacity for hydrogen and the speed of incorporation and removal of hydrogen are advantageously increased according to the invention. The suspension has a good storability and pumpability. The invention also relates to a storage material for hydrogen having specific properties which storage material can be produced according to the method of the invention.
Abstract:
Hydrogen energy systems for obtaining hydrogen gas from a solid storage medium using controlled coherent light. Also disclosed are systems for charging/recharging magnesium with hydrogen to obtain magnesium hydride. Other relatively safe systems assisting storage, transport and use (as in vehicles) of such solid storage mediums are disclosed.