# US 8,785,342 B2 · Catalyst carrier, catalyst and process for producing the same

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- Number: US 8,785,342 B2
- Document ID: US8785342B2
- Status: Granted
- Kind: B2
- Application number: 13/970,926
- Filed: 2013-08-20
- Published: 2013-12-19
- Granted: 2014-07-22
- Earliest claimed: 2008-02-20
- Assignees: Showa Denko K.K.
- Applicants: Showa Denko K.K.
- Inventors: Ryuji Monden; Tadatoshi Kurozumi; Toshikazu Shishikura
- Web page: https://patentgrep.com/patent/US8785342B2

## CPC

- H01M 4/9075: {Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence)}
- B01J 27/24: Nitrogen compounds
- B01J 37/0036: {Grinding}
- B01J 37/14: with gases containing free oxygen
- H01M 4/92: Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence)
- H01M 4/925: {supported on carriers, e.g. powder carriers}
- B01J 27/22: Carbides
- B01J 35/33: Electric or magnetic properties
- Y02E 60/50: Fuel cells
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The ink as claimed in claim 1, wherein the M is further at least two metals 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.

### Claim 3 (depends on 1)

The ink as claimed in claim 1, wherein the metal oxycarbonitride has a composition represented by NbaM′bCxNyOz in which M′ is at least one metal selected from the group consisting of iron, cobalt and nickel, a, b, x, y and z are each a proportion of each atomic number and when a+b=1, they satisfy 0.01≦a<1, 0<b≦0.99, 0.01≦x≦2, 0.01≦y≦2, 0.01≦z≦3 and 1.7≦x+y+z≦5.

### Claim 4

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.

### Claim 5 (depends on 4)

The ink as claimed in claim 4, wherein the metal oxycarbonitride further comprising at least one metal selected from the group consisting of iron, cobalt and nickel.