Abstract: The objective of the present invention is to provide a steam electrolysis cell of which current efficiency is high and by which hydrogen can be efficiently produced, and a method for producing hydrogen using the steam electrolysis cell. The steam electrolysis cell according to the present invention is characterized in comprising an anode layer, a cathode layer, and a proton conducting oxide electrolyte layer between the anode layer and the cathode layer, wherein the anode layer comprises a perovskite oxide, and the perovskite oxide comprises Ba and Co.

Abstract: The objective of the present invention is to provide a steam electrolysis cell of which current efficiency is high and by which hydrogen can be efficiently produced, and a method for producing hydrogen using the steam electrolysis cell. The steam electrolysis cell according to the present invention is characterized in comprising an anode layer, a cathode layer, and a proton conducting oxide electrolyte layer between the anode layer and the cathode layer, wherein the anode layer comprises a perovskite oxide, and the perovskite oxide comprises Ba and Co.

Abstract: To provide a sustainable method for the synthesis of ammonia from nitrogen by low resources and low energy. The present invention is a method for the synthesis of ammonia by a thermochemical cycle, which uses nitrogen and water as raw materials and uses renewable energy as an energy source. Ammonia is synthesized without auxiliary raw materials by a step of obtaining ammonia by a reaction of nitrogen and a halogenated hydrogen by way of a halogenated ammonium as a cycle that proceeds in a thermodynamic manner, and a step of recycling the byproduced halogen.

Abstract: An object of the present invention is to provide an electrode catalyst which is excellent in catalyst performance compared with a conventional electrode catalyst. It is also an object of the present invention to provide an electrode composition for fuel cell and a polymer electrolyte fuel cell using the electrode catalyst. The fuel cell electrode catalyst of the present invention is characterized in that a catalyst component is supported on a carrier having a specific feature.

Abstract: The invention provides a method for treating waste water wherein organic and inorganic substances in waste water can be treated at high levels regardless of the concentration, and a unit itself can be made compact. The method of the invention is a method for treating waste water, which comprises treating waste water at 100° C. or less in the presence of oxygen and catalyst containing noble metal and active carbon and having pores, wherein the volume of pores having a radius of 40 ? or more and less than 100 ? is 0.05 ml/g or more.

Abstract: The invention provides a method for treating waste water wherein organic and inorganic substances in waste water can be treated at high levels regardless of the concentration, and a unit itself can be made compact. The method of the invention is a method for treating waste water, which comprises treating waste water at 100° C. or less in the presence of oxygen and catalyst containing noble metal and active carbon and having pores, wherein the volume of pores having a radius of 40 ? or more and less than 100 ? is 0.05 ml/g or more.

Abstract: A method is provided for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the presence of the catalyst under pressure such that the waste water retains the liquid phase thereof at a temperature of 50° C. to less than 170°C.; the catalyst contains activated carbon; and the oxygen concentration is controlled in an exhaust gas in the range from 0 to 5 vol %. The present inventive method is capable of treating waste water efficiently for a long period in a stable manner at reduced temperatures as compared with the substantially higher temperatures and pressures used in many of the prior art methods.

Abstract: This invention discloses a method for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the presence of the catalyst under pressure such that said waste water retains the liquid phase thereof at temperature of 50 to less than 170° C.; the catalyst contains activated carbon; and controlling an oxygen concentration in an exhaust gas in the range from 0 to 5 vol %. The present inventive method is capable of treating waste water efficiently for a long period in a stable manner at the reduced temperatures and as compared with the substantially higher temperatures and pressures used in many of the prior art method.

Abstract: This invention discloses a method for oxidizing and/or decomposing organic and/or inorganic oxidizable substances in waste water by wet oxidation with a use of a catalyst, wherein the oxidizable substances are oxidized and/or decomposed with an oxygen containing gas in the presence of the catalyst under pressure such that said waste water retains the liquid phase thereof at temperature of 50 to less than 170° C.; the catalyst contains activated carbon; and controlling an oxygen concentration in an exhaust gas in the range from 0 to 5 vol %. The present inventive method is capable of treating waste water efficiently for a long period in a stable manner at the reduced temperatures and as compared with the substantially higher temperatures and pressures used in many of the prior art method.