# US 8,785,065 B2 · Catalyst for generating hydrogen and method for generating hydrogen

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,785,065 B2
- Document ID: US8785065B2
- Status: Granted
- Kind: B2
- Application number: 13/607,093
- Filed: 2012-09-07
- Published: 2013-03-07
- Granted: 2014-07-22
- Earliest claimed: 2011-09-07
- Assignees: National Institute of Advanced Industrial Science and Technology
- Applicants: Qiang Xu; Sanjay Kumar Singh; Ashish Kumar Singh
- Inventors: Qiang Xu; Sanjay Kumar Singh; Ashish Kumar Singh
- Web page: https://patentgrep.com/patent/US8785065B2

## CPC

- B01J 23/755: Nickel
- B01J 35/45: Nanoparticles
- C01B 3/04: by decomposition of inorganic compounds (reversible storage of hydrogen C01B3/0018)
- H01M 8/0606: with means for production of gaseous reactants
- Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
- Y02E 60/50: Fuel cells
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The present invention provides a catalyst for generating hydrogen, containing a composite metal of iron and nickel, the catalyst used in a decomposition reaction of at least one compound selected from the group consisting of hydrazine and hydrates thereof; and a method for generating hydrogen, including contacting the catalyst for generating hydrogen with at least one compound selected from the group consisting of hydrazine and hydrates thereof. According to the invention, hydrogen can be efficiently generated with improved selectivity in the method for generating hydrogen that utilizes the decomposition reaction of hydrogen.

## Claims

### Claim 1

A method for generating hydrogen comprising contacting a catalyst for generating hydrogen with at least one compound selected from the group consisting of hydrazine and hydrates thereof, wherein the catalyst comprises a composite metal of iron and nickel, and the composite metal of iron and nickel contains 25 to 75% by mol of iron.

### Claim 2 (depends on 1)

The method for generating hydrogen according to claim 1, wherein the hydrogen generation reaction is conducted in an alkaline aqueous solution.

### Claim 3 (depends on 1)

A method for supplying hydrogen to a fuel cell, comprising supplying hydrogen generated by the method recited in claim 1 as a hydrogen source to a fuel cell.

### Claim 4 (depends on 1)

The method for generating hydrogen according to claim 1, wherein the composite metal of iron and nickel is an alloy, intermetallic compound, or solid solution of iron and nickel.

### Claim 5 (depends on 2)

The method for generating hydrogen according to claim 2, wherein the composite metal of iron and nickel is an alloy, intermetallic compound, or solid solution of iron and nickel.

### Claim 6 (depends on 1)

The method for generating hydrogen according to claim 1, wherein the composite metal of iron and nickel is composed of ultrafine particles having a particle size of 1 to 100 nm.

### Claim 7 (depends on 2)

The method for generating hydrogen according to claim 2, wherein the composite metal of iron and nickel is composed of ultrafine particles having a particle size of 1 to 100 nm.

### Claim 8 (depends on 4)

The method for generating hydrogen according to claim 4, wherein the composite metal of iron and nickel is composed of ultrafine particles having a particle size of 1 to 100 nm.