A fuel cell system including: an electrochemical pump including a first anode, a first cathode, and a first electrolyte membrane including a proton conductive oxide, the electrochemical pump separating hydrogen from a gas containing the hydrogen, and a solid oxide fuel cell that includes a second anode, a second cathode, and a second electrolyte membrane including a solid oxide electrolyte, and that generates electricity by reacting a fuel gas and an oxidant gas with each other.

To provide a uniform-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, a uniform-type platinum-loaded alumina catalyst includes: an alumina carrier; sulfur or a sulfur compound dispersed over an entire cross section of the alumina carrier; platinum dispersed and loaded over the entire cross section of the alumina carrier; one or more alkali metals selected from the group consisting of sodium, potassium, and calcium. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of the sulfur or the sulfur compound preferably is 0.15 to 5.0 wt % calculated as elemental sulfur. The content of the alkali metal preferably is 0.1 to 5.0 wt % calculated as elemental alkali metal.

To provide an egg shell-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, an egg shell-type platinum-loaded alumina catalyst includes: an alumina carrier; platinum dispersed and loaded on an outer shell of the alumina carrier; and one or more second components selected from the group consisting of vanadium, chromium, molybdenum, and phosphorus. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of each second component preferably is 0.1 to 5.0 wt % calculated as each element. The alumina carrier has a surface area of 150 m.sup.2/g or more, a pore volume of 0.40 cm.sup.3/g or more, and an average pore diameter of 40 to 300 Å, with pores having a pore diameter in a range of ±30 Å from the average pore diameter occupying 60% or more of a total pore volume.

The present disclosure relates to a multi-sandwich composite catalyst and a preparation method and application thereof. The present disclosure provides a preparation method of a multi-sandwich composite catalyst, comprises the following steps: sequentially depositing a first layer oxide, a first active metal, an oxide interlayer, a second active metal and a surface oxide on a template, and sequentially performing calcination and reduction, thereby obtaining a multi-sandwich composite catalyst; wherein the first active metal and the second active metal are different kinds of active metals. In the present disclosure, a multi-sandwich structure is formed by depositing the oxides and active metals alternately, so that the position and spacing distance of the active centers can be precisely controlled. The multi-sandwich composite catalyst prepared by the method provided described herein has a higher conversion than that of a catalyst without an interlayer when used for the catalytic reaction.

Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a hydrogen purification unit that removes a dehydrogenation product from the hydrogen-containing gas obtained in the dehydrogenation reaction unit to obtain a purified gas including high-purity hydrogen; and a degassing unit that removes an inorganic gas contained in the raw material on an upstream side of the dehydrogenation reaction unit in a flow of the raw material.

An object of the present invention is to provide a catalyst composition that partially oxidizes a hydrocarbon to produce hydrogen and carbon monoxide, the catalytic activity of which is unlikely to deteriorate even when the catalyst composition is exposed to a high temperature, and the present invention provides a catalyst composition that partially oxidizes a hydrocarbon to produce hydrogen and carbon monoxide, including: a carrier that contains α-alumina; and a supported components that are supported on the carrier, wherein the supported components includes at least one platinum group element, a Ce oxide, and a Zr oxide.

A method for producing high-efficiency methanol capable of reducing emission of carbon dioxide. The method includes: a first step of preparing mixed gas by using steam and natural gas as raw materials and converting C.sub.2+ hydrocarbon contained in the natural gas into methane on a catalyst; a second step of preparing a synthesis gas including carbon monoxide, carbon dioxide, and hydrogen by reforming the mixed gas in a reformer filled with a reforming catalyst; and a third step of preparing methanol by using the synthesis gas as the raw material and reacting the synthesis gas.

A hydrogen generator includes: a reformer configured to generate a hydrogen-containing gas by a reforming reaction of a material gas; a combustor configured to heat the reformer by diffusion combustion of the material gas and combustion air; a supplementary air flow rate adjuster configured to adjust the flow rate of supplementary air added to the material gas; and a controller configured to control the supplementary air flow rate adjuster such that the flow rate of a mixture gas of the material gas and the supplementary air becomes a predetermined value.

A reformer assembly for a fuel cell includes a vortex tube receiving heated fuel mixed with steam. A catalyst coats the inner wall of the main tube of the vortex tube and a hydrogen-permeable tube is positioned in the middle of the main tube coaxially with the main tube.

Photocatalysts and methods of using photocatalysts for producing hydrogen and oxygen from water are disclosed. The photocatalysts include an iodide modified photoactive material having an electrically conductive material attached to the iodide ions.