A metal compound-graphene oxide composite that can be used for manufacture of hydrogen. A composite has graphene oxide and at least one metal compound selected from cobalt compounds, nickel compounds, and molybdenum compounds. If the metal compound includes a cobalt compound or a nickel compound, in the infrared absorption spectrum of the complex, absorption derived from CO groups is present and absorptions derived from OH groups and CO groups and absorption derived from bonds between graphene oxide and cobalt or nickel via oxygen atoms are essentially absent. If the metal compound is a molybdenum compound, in the infrared absorption spectrum of the complex, absorptions derived from CO groups, OH groups, and CO groups, and absorption derived from bonds between graphene oxide and cobalt or nickel via oxygen atoms, are all essentially absent.

An exothermic reaction of hydrogen/deuterium loaded into a metal or alloy is triggered by controlling the frequency of a hydrogen/deuterium plasma in a reaction chamber. The plasma frequency is controlled by adjusting its electron density, which in turn is controlled by adjusting the pressure within the reaction chamber. An exothermic reaction is generated at certain discrete plasma frequencies, which correspond to the optical phonon modes of D-D, H-D, and HH bonds within the metal lattice. For example, in palladium metal, the frequencies are 8.5 THz, 15 THz, and 20 THz, respectively.

Catalyst comprising an Ir layer having an outer layer with a layer comprising Pt directly thereon, wherein the Ir layer has an average thickness in a range from 0.04 to 30 nanometers, wherein the layer comprising Pt has an average thickness in a range from 0.04 to 50 nanometers, and wherein the Pt and Ir are present in an atomic ratio in a range from 0.01:1 to 10:1. Catalysts described herein are useful, for example, in fuel cell membrane electrode assemblies.

A catalyst containing nanosize zeolite particles supported on a support material for alkylation reactions, such as the alkylation of benzene to form ethylbenzene, and processes using such a catalyst is disclosed.

An exothermic reaction assembly includes a reaction chamber and a generator operative to generate an AC electrical signal and apply the signal to the reaction chamber by superimposing the AC signal over a DC signal. A gas manifold and controller is operative to connect a vacuum pump and one or more gas chambers to the reaction chamber and to control a pressure of the reaction chamber. The signal generator is operative to create a plasma in the reaction chamber by superimposing the AC electrical signal to the reaction chamber over the DC signal. The gas manifold and controller are operative to adjust the pressure within the reaction chamber to achieve a predetermined plasma frequency.

A catalyst containing nanosize zeolite particles supported on a support material for alkylation reactions, such as the alkylation of benzene to form ethylbenzene, and processes using such a catalyst is disclosed.

Method of forming micro channels in a polymeric nanocomposite film is provided. The method includes combining one or more monomers to form a mixture and adding a plurality of carbon fibers with metal nanoparticles dispersed therein to the mixture prior to or concurrently with formation of a polymer from the monomers. The method also includes adding at least one hydrophobic agent and at least one plasticizer to the polymer to form the polymeric nanocomposite film and forming a plurality of laser-etched micro channels in a surface of the polymeric nanocomposite film.

There is provided a photocatalyst sheet comprising a base material and a photocatalyst layer containing at least a photocatalyst, wherein the photocatalyst layer is firmly adhered to the base material. In an embodiment, there is provided a photocatalyst sheet comprising a base material; and a photocatalyst layer that contains at least a photocatalyst, and is formed on at least one surface of the base material through an aerosol deposition method. This photocatalyst sheet has an excellent photocatalytic activity and an excellent adhesion.

A device and method for producing a thin-film catalyst are provided. The device includes a vacuum chamber, a plurality of evaporators, a plurality of gas guide pipes, an ion generator, and a control unit. The plurality of evaporators are configured to evaporate at least one film material. The plurality of gas guide pipes are configured to introduce a reactive gas. The ion generator is configured to ionize the reactive gas and the evaporated film material. The control unit is configured to control the vacuum chamber to be vacuumed, control at least two evaporators of the plurality of evaporators to be simultaneously started, control the plurality of gas guide pipes to introduce the reactive gas, and control an ion source current of the ion generator to be adjusted, such that the evaporated film material reacts with the reactive gas to form a catalytic film layer on a surface of a substrate.

A method for preparing a catalyst having catalytically active materials selectively impregnated or supported only in the surface region of the catalyst particle using the mutual repulsive force of a hydrophobic solution and a hydrophilic solution and the solubility difference to a metal salt precursor between the hydrophobic and hydrophilic solutions. The hydrophobic solvent is a C2-C6 alcohol. The hydrophobic solvent is introduced into the catalyst support and then removed of a part of the pores connected to the outer part of the catalyst particle by drying under appropriate conditions. Then, a hydrophilic solution containing a metal salt is introduced to occupy the void spaces removed of the hydrophobic solvent, and the catalyst particle is dried at a low rate to selectively support or impregnate the catalytically active material or the precursor of the catalytically active material only in the outer part of the catalyst particle.