Provided is a hydrogen separation filter having higher hydrogen selectivity. The hydrogen separation filter includes a foil of a first metal, a lattice expansion layer formed on the foil and consisting of a second metal, and a hydrogen dissociation layer formed on the lattice expansion layer and consisting of a third metal. The first metal is selected from the group consisting of Pd, V, Ta, Nb, and alloys thereof.

Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include at least one foil-microscreen assembly disposed between and secured to first and second end frames. The at least one foil-microscreen assembly may include at least one hydrogen-selective membrane and at least one microscreen structure including a non-porous planar sheet having a plurality of apertures forming a plurality of fluid passages. The planar sheet may include generally opposed planar surfaces configured to provide support to the permeate side. The plurality of fluid passages may extend between the opposed surfaces. The at least one hydrogen-selective membrane may be metallurgically bonded to the at least one microscreen structure. In some embodiments, the devices may include a permeate frame having at least one membrane support structure that spans at least a substantial portion of an open region and that is configured to support at least one foil-microscreen assembly.

A method is provided for preparing a carbon monoxide resistant gold-alloy gas separation membrane system. A palladium layer is provided upon a surface of a tubular porous substrate, wherein the palladium layer has a mean surface roughness (Sa) of less than 2.5 microns, followed by submerging the tubular porous substrate within a solution of chloroauric acid or a salt thereof. A volume of hydrogen peroxide is periodically introduced into the solution while spinning the tubular porous substrate at a set rate and for a time period so as to deposit upon the palladium layer a gold layer of desired uniformity and a desired thickness.

Herein disclosed is a dry reforming reactor comprising a gas inlet near the bottom of the reactor; a gas outlet near the top of the reactor; a fluidized bed comprising a catalyst; and one or more hydrogen membranes comprising palladium (Pd). In some cases, the one or more hydrogen membranes comprises Pd alloy membranes, or Pd supported on ceramics or metals. In some cases, the one or more hydrogen membranes are placed vertically in the reactor as hydrogen membrane tubes hanging from the top of the reactor. In some cases, the hydrogen membranes are configured to selectively collect hydrogen from the tubes via one or more internal manifolds and sent to an external hydrogen collection system.

Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include at least one foil-microscreen assembly disposed between and secured to first and second end frames. The at least one foil-microscreen assembly may include at least one hydrogen-selective membrane and at least one microscreen structure including a non-porous planar sheet having a plurality of apertures forming a plurality of fluid passages. The planar sheet may include generally opposed planar surfaces configured to provide support to the permeate side. The plurality of fluid passages may extend between the opposed surfaces. The at least one hydrogen-selective membrane may be metallurgically bonded to the at least one microscreen structure.

An integrated process for making high molecular weight hydrocarbons from a synthesis gas feed to a Fischer-Tropsch unit. A carbon monoxide resistant gold-on-palladium membrane system (membrane system) is used to control the hydrogen-to-carbon monoxide molar ratio of a feed to the Fischer-Tropsch unit. The membrane system is operatively connected between a steam reformer and the Fischer-Tropsch unit. The membrane system receives a synthesis gas stream and provides for the removal of hydrogen from the synthesis gas stream to provide a retentate stream having a desired H.sub.2/CO molar ratio that is fed to the Fischer-Tropsch unit.

A structure of assembly grasp for palladium-alloy tubes and the manufacturing method thereof are described. The structure of assembly grasp for palladium-alloy tubes includes a grasp with a plurality of holes, a plurality of palladium-alloy tubes inserted into the plurality of holes, and an intermetallic compound layer between the palladium-alloy tubes and the inner sidewalls of the plurality of holes.

An exemplary dehydrogenation device for generating a hydrogen gas through dehydrogenation according to the present disclosure comprises an anode containing a dehydrogenation catalyst, a cathode containing catalyst capable of reducing protons, and a proton conductor disposed between the anode and the cathode. The proton conductor has a perovskite crystal structure expressed by the compositional formula A.sub.aB.sub.1-xB.sub.xO.sub.3-. The A element is an alkaline-earth metal and is contained in a range of 0.4<a<0.9, where the a value represents a mole fraction of this element, and the B element is a trivalent group 3 or group 13 element and is contained in a range of 0.2<x<0.6, where the x value represents a mole fraction of this element.

There is described a method of producing hydrogen and nitrogen using a feedstock gas reactor. Reaction of feedstock and combustion gases in the reactor produces hydrogen and nitrogen through pyrolysis of the feedstock gas. Parameters of the process may be adjusted to control the ratio of hydrogen to nitrogen that is produced such that it may be suitable, for example, for the synthesis of ammonia.

A hydrogen separator having a first end plate, a second end plate, and a cylindrical support extending from the second end plate. A permeable tube support plate is suspended by the cylindrical support, wherein the second end plate, cylindrical support and permeable tube support plate define a collection chamber. A hydrogen permeable tube is coupled to the permeable tube support plate. A housing surrounds the cylindrical support. An exhaust tube support plate is within the housing and external of the collection chamber, wherein an exhaust chamber is defined between the exhaust tube support plate and the first end plate.