Abstract: The present invention provides a catalyst which is not corroded in an acidic electrolyte or at a high potential, is excellent in durability and has high oxygen reduction activity. The catalyst of the present invention comprises an oxycarbonitride of titanium. The oxycarbonitride of titanium is preferably represented by the composition formula TiCxNyOz (wherein x, y and z represent a ratio of the numbers of atoms and are numbers satisfying the conditions of 0<x?1.0, 0<y?1.0, 0.1?z<2.0, 1.0<x+y+z?2.0 and 2.0?4x+3y+2z). The catalyst is preferably a catalyst for a fuel cell.

Abstract: The present invention provides a catalyst carrier having excellent durability and capable of attaining high catalytic ability without increasing the specific surface area thereof, and a catalyst obtainable by using the catalyst carrier. The catalyst carrier of the present invention comprises a metal oxycarbonitride, preferably the metal contained in the metal oxycarbonitride comprises at least one selected from the group consisting of niobium, tin, indium, platinum, tantalum, zirconium, copper, iron, tungsten, chromium, molybdenum, hafnium, titanium, vanadium, cobalt, manganese, cerium, mercury, plutonium, gold, silver, iridium, palladium, yttrium, ruthenium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and nickel. Moreover, the catalyst of the present invention comprises the catalyst carrier and a catalyst metal supported on the catalyst carrier.

Abstract: Electrocatalyst layers include an electrocatalyst having high oxygen reduction activity that is useful as an alternative material to platinum catalysts. Uses of the electrocatalyst layers are also disclosed. The electrocatalyst layer includes an electrocatalyst that is formed of a metal oxide obtained by thermally decomposing a metal organic compound. The metal element forming the electrocatalyst is preferably one selected from the group consisting of niobium, titanium, tantalum and zirconium.

Abstract: The present invention provides a catalyst which is not corroded in an acidic electrolyte or at a high potential, is excellent in durability and has high oxygen reduction ability. The catalyst of the present invention is characterized by including a niobium oxycarbonitride. The catalyst of the invention is also characterized by including a niobium oxycarbonitride represented by the composition formula NbCxNyOz, wherein x, y and z represent a ratio of the numbers of atoms and are numbers satisfying the conditions of 0.01?x?2, 0.01?y?2, 0.01?z?3 and x+y+z?5.

Abstract: Catalyst layers include an electrocatalyst having high oxygen reduction activity that is useful as an alternative material to platinum catalysts. Uses of the catalyst layers are also disclosed. A catalyst layer of the invention includes an electrode substrate and an electrocatalyst on the surface of the electrode substrate, and the electrocatalyst is formed of a metal compound obtained by hydrolyzing a metal salt or a metal complex.

Abstract: Solder metal consists essentially of 8.8 to 5.0 mass % of Zn, 0.05 to 0 mass % of Bi and the balance of Sn and unavoidable impurities.

Abstract: A barium calcium titanate of the present invention has a remarkable effect that a fine barium calcium titanate powder having excellent dispersibility, reduced impurities and high crystallinity and being solid-dissolved at an arbitrary ratio, and a production process thereof are provided. The barium calcium titanate represented by the compositional formula: (Ba(1-X)CaX)YTiO3 (wherein 0<X<0.2 and 0.98?Y?1.02), which contains 3 mol % or less (including 0 mol %) of an orthorhombic perovskite compound and in which the specific surface area D is from 1 to 100 m2/g.

Abstract: The present invention relates to a method for producing a titanium-containing perovskite compound, characterized in that the method comprises a step of reacting titanium oxide produced through a vapor-phase method with at least one element selected from a group of alkaline earth metal compound and Pb compound in an alkaline solution; a perovskite compound obtained by the method; and electronic materials and the like using the compound. The titanium-containing perovskite compound obtained by the method in the present invention has a small particle diameter and few impurities, is excellent in electric characteristics, and enables to make the size of electronic devices smaller since the compound can be shaped in a thin film product.

Abstract: A titanium-containing perovskite composite oxide particle represented by the compositional formula: A(TixB(1?x))yO3 (provided that x and y each denoting a compositional ratio are 0?x?1 and 0.98?y?1.02, A is at least one or more element selected from Ca, Sr, Ba, Pb and Mg, and B is at least one or more element selected from Hf and Zr), wherein the specific surface area is from 1 to 100 m2/g, the average primary particle diameter D1 defined by formula (I) is from 10 to 1,000 nm, and the ratio D2/D1 of D1 to the average secondary particle diameter D2 is from 1 to 10: D1=6/?S??(I) (wherein ? is a density of the particle and S is a specific surface area).

Abstract: The present invention provides a perovskite titanium-containing composite oxide fine particle represented by the formula: (A1XA2(1?X))YTiO3±? (wherein 0?X?1, 0.98?Y?1.02, 0???0.05, A1 and A2 each is an atom selected from a group consisting of Ca, Sr, Ba, Pb and Mg and are different from each other), wherein the specific surface area is from 1 to 100 m2/g and the D2/D1 value is from 1 to 10.

Abstract: Solder metal consists essentially of 8.8 to 5.0 mass % of Zn, 0.05 to 0 mass % of Bi and the balance of Sn and unavoidable impurities.

Abstract: A civil engineering and construction fibrous reinforcing material having a metal oxide, metal hydroxide, and metal hydroxy-oxide fast deposited on a fibrous substance is practically useful as a substitute for asbestos. This material is produced by immersing the fibrous substance in a mixed solution of a metal salt and a solvent. Civil engineering and construction materials having the fibrous reinforcing material incorporated in inorganic refractory substances are used in the form of sheet-molded plates, for example.