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US 8,785,342 B2Granted
Catalyst carrier, catalyst and process for producing the same
AssigneeShowa Denko K.K.
InventorsRyuji Monden, Tadatoshi Kurozumi, Toshikazu Shishikura
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AssigneeShowa Denko K.K.
InventorsRyuji Monden, Tadatoshi Kurozumi, Toshikazu Shishikura
Estimating the term…
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.
An ink for producing a catalyst layer for a fuel cell produced by dispersing, in a solvent, a catalyst comprising a catalyst carrier comprising a metal oxycarbonitride and a catalyst metal supported on the catalyst carrier, wherein the metal oxycarbonitride has a composition represented by MCxNyOz in which M is at least one metal selected from the group consisting of niobium, tin, indium, tantalum, zirconium, copper, iron, chromium, hafnium, titanium, vanadium, cobalt, manganese, cerium, mercury, plutonium, gold, silver, palladium, yttrium, lanthanum, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and nickel, x, y and z are each a proportion of each atomic number and satisfy 0.01≦x≦2, 0.01≦y≦2, 0.01≦z≦3 and 1.7≦x+y+z≦5.
An ink for producing a catalyst layer for a fuel cell produced by dispersing, in a solvent, a catalyst comprising a catalyst carrier comprising a metal oxycarbonitride and a catalyst metal supported on the catalyst carrier, wherein the metal oxycarbonitride has a composition represented by MCxNyOz in which M is at least one metal selected from the group consisting of niobium, tantalum, zirconium, hafnium, titanium and vanadium, x, y and z are each a proportion of each atomic number and satisfy 0.01≦x≦2, 0.01≦y≦2, 0.01≦z≦3 and 1.7≦x+y+z≦5.
Dependencies are inferred from the claim text.