A process for direct compression of hydrogen separated from a hydrocarbon source is described herein. The process comprises a first zone wherein a hydrocarbon reaction that produce hydrogen occurs, a ceramic proton conductor which under an applied electric field transport hydrogen from said first zone to said second zone, and a second zone where compressed hydrogen is produced. The heat energy generated by ohmic resistance in the membrane is partially recuperated as chemical energy in the hydrocarbon reforming process to generate hydrogen.

A method of joining and sealing a vanadium based membrane to a metallic connection section comprising: mounting a section of a vanadium based membrane on a connector formation of a connection section, the connection section being formed of a different metal to the vanadium based membrane, the connector formation providing a recess into which a section of the vanadium based membrane is seated and a connection interface in which the end face of the vanadium based membrane is proximate to or substantially abuts an adjoining face of the connector formation; mounting and operating a chiller arrangement in thermal contact with vanadium based membrane proximate the connection interface; heating a filler metal on the connection section to at least the liquidus temperature of the filler metal using a laser beam directed onto the filler metal located on the connection section and having a beam edge positioned at an offset location spaced apart from the connection interface a distance that attenuates direct heating of the vanadium based membrane by the laser beam, and on the connection section, such that the filler metal can flow over the connection interface from the offset location onto the vanadium based membrane; and cooling the filler metal to form a bridging section of filler metal between the vanadium based membrane and connection section over the connection interface.

A pass or tube or a section thereof or U bend in a coil in a paraffin cracker having section having a pore size in the metal substrate from about 0.001 to 0.5 microns over coated with a dense metal membrane permits the permeation of one or more of H.sub.2, CH.sub.4, CO and CO.sub.2 from cracked gases moving the reaction equilibrium to the production of ethylene and reduces the load on the down-stream separation train of the steam cracker.

The present invention pertains to a polycrystalline membrane containing metal nitride particles represented by the general formula MN.sub.x (where M is a metal element in which the Fermi energy is in a position higher than 4.4 eV vs L.V. and x is the range over which a rock salt-type structure can be assumed), in which the crystallite size determined by transmission electron microscopy is 10 nm or less, at least some of the crystallites have rock salt-type structure, and the crystallites exhibit (111) orientation but substantially do not exhibit (100) orientation. The present invention also pertains to a method for manufacturing a polycrystalline membrane, comprising forming, by sputtering, a polycrystalline membrane on a substrate having a temperature of less than 200 C., the polycrystalline membrane being represented by the general formula MN.sub.x and being such that at least some crystallites have a rock salt structure and the crystallites exhibit (111) orientation but essentially do not exhibit (100) orientation. The present invention provides a hydrogen-permeable TiN.sub.x microparticle membrane exhibiting a higher mixed hydride ion (H.sup.)-electron conduction.

(EN) The present invention relates to the field of high efficiency and high flow hydrogen generation and purification from a hydrogen tank provided in the form of ammonia (NH3). In particular, the present invention describes in particular an innovative and compact system for the dissociation of ammonia and therefore the production of molecular hydrogen (H2), all in a cycle totally free of carbon (hence carbon emissions), as well as by the generation of nitrogen oxide and nitric dioxide (NOx).

A hydrogen permeation membrane is provided that can include a carbon-based material (C) and a ceramic material (BZCYT) mixed together. The carbon-based material can include graphene, graphite, carbon nanotubes, or a combination thereof. The ceramic material can have the formula BaZr.sub.1-x-y-zCe.sub.xY.sub.yT.sub.zO.sub.3-, where 0x0.5, 0y0.5, 0z0.5, (x+y+z)>0; 00.5, and T is Yb, Sc, Ti, Nb, Ta, Mo, Mn, Fe, Co, Ni, Cu, Zn, Ga, In, or a combination thereof. In addition, the BZYCT can be present in the C-BZCYT mixture in an amount ranging from about 40% by volume to about 80% by volume. Further, a method of forming such a membrane is also provided. A method is also provided for extracting hydrogen from a feed stream.

Portable device (1) for producing hydrogen from a hydrogen precursor and a liquid, this device comprisinga main chamber (2), intended for receiving said hydrogen precursor and said liquid, an additional chamber (6), intended for collecting the hydrogen thus produced, a separation membrane (5), defining said main chamber relative to said additional chamber, means (8) for discharging the hydrogen out of the additional chamber, and characterized in that it comprises heat exchange means (21), provided on at least one portion of the periphery of said main chamber. This device produces pure hydrogen which may supply a fuel cell.

A hydrogen gas producing apparatus includes a porous body (100) and a mixed gas source (300). The porous body (100) is permeable to hydrogen gas and carbon dioxide gas, and has a property of being more permeable to hydrogen gas than carbon dioxide gas. The mixed gas source (300) causes a mixed gas including carbon dioxide gas and hydrogen gas to flow into the porous body (100) under a condition that a pressure gradient represented by (P.sub.1P.sub.2)/L is below 50 MPa/m, where L represents the length of the porous body (100) in a direction in which the mixed gas permeates; P.sub.1 represents an inflow pressure of the mixed gas into the porous body (100); and P.sub.2 represents an outflow pressure thereof from the porous body (100).

A separation membrane sheet that causes a specific fluid component to selectively permeate therethrough, comprises: a first porous layer; and a resin composition layer formed on the first porous layer. The resin composition layer has a filtration residue fraction of greater than or equal to 20% and less than or equal to 90%; and contains a resin having an ionic group or a salt thereof, and has an ion exchange capacity of greater than or equal to 1 millimole equivalent per 1 g of a dry resin in a filtration residue.

(EN) The present invention relates to the field of high efficiency and high flow hydrogen generation and purification from a hydrogen tank provided in the form of ammonia (NH3). In particular, the present invention describes in particular an innovative and compact system for the dissociation of ammonia and therefore the production of molecular hydrogen (H2), all in a cycle totally free of carbon (hence carbon emissions), as well as by the generation of nitrogen oxide and nitric dioxide (NOx).