# US 8,889,588 B2 · High-durability metal foam-supported catalyst for steam carbon dioxide reforming and method for preparing the same

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- Number: US 8,889,588 B2
- Document ID: US8889588B2
- Status: Granted
- Kind: B2
- Application number: 13/909,733
- Filed: 2013-06-04
- Published: 2014-05-22
- Granted: 2014-11-18
- Earliest claimed: 2012-11-21
- Assignees: Korea Institute of Science and Technology
- Applicants: Korea Institute of Science and Technology
- Inventors: Dong Ju Moon; Tae Gyu Kim; Dae Il Park
- Web page: https://patentgrep.com/patent/US8889588B2

## CPC

- B01J 23/755: Nickel
- B01J 37/0217: {Pretreatment of the substrate before coating}
- B01J 37/0219: {the coating containing organic compounds}
- B01J 37/08: Heat treatment {(B01J37/0009, B01J37/0018 take precedence)}
- C01B 3/40: characterised by the catalyst
- C01B 2203/0233: the reforming step being a steam reforming step
- C01B 2203/0238: the reforming step being a carbon dioxide reforming step
- C01B 2203/1058: Nickel catalysts
- C01B 2203/1082: Composition of support materials
- Y02P 20/141: Feedstock
- Y02P 20/52: using catalysts, e.g. selective catalysts
- Y10S 502/52724: Peculiar structure or physical form, e.g. foam, sponge, foil, sack, bag, fiber in a matrix, monolith, microstructure, microcracking, or microaggregates
- 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}
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

Disclosed is a catalyst support for steam carbon dioxide reforming reaction utilizing the advantages of superior thermal conductivity and thermal dispersion of a metal foam support and a large specific surface area of a carrier material, which allows selective control of coating amount and the thickness of a support layer and prevents cracking on the support surface, using both the sol-gel method and the slurry method that have been used for coating of a metal foam support.

## Claims

### Claim 1

A method for preparing a nickel-based catalyst for steam carbon dioxide reforming comprising nickel as an active metal and washcoated on alumina as a metal foam support, wherein the support has a porosity of 80-97% and 10-110 pores per inch (PPI), the nickel is included in an amount of 0.01-10 wt % based on the support and the alumina is washcoated with an amount of 0.1-30 wt %, comprising:
supporting alumina on a metal foam and sintering; and
supporting a nickel precursor on the alumina-supported metal foam support by an impregnation method and sintering again.

### Claim 2 (depends on 1)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 1, further comprising a sol-slurry solution for wash coating having an Al2O3/aluminum isopropoxide molar ratio of 1-5.

### Claim 3 (depends on 1)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 1, wherein the nickel precursor is at least one compound selected from the group consisting of nickel nitrate, nickel bromide, nickel chloride, nickel acetate and nickel iodide.

### Claim 4 (depends on 1)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 1, wherein the metal foam support is selected from the group consisting of a porous nickel metal, a porous copper metal, a porous silver metal, a porous aluminum metal and an iron-chromium alloy.

### Claim 5 (depends on 4)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 4, wherein the porous metal is an open-cell porous metal, a closed-cell porous metal or a high-melting-point porous metal.

### Claim 6 (depends on 1)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 1, wherein the metal foam support has a random pore structure, a channel pore structure or a fiber pore structure.

### Claim 7 (depends on 1)

The method for preparing a nickel-based catalyst for steam carbon dioxide reforming according to claim 1, wherein the metal foam support is a nickel porous metal support.

### Claim 8

A method for preparing a crack-free nickel-based catalyst for steam carbon dioxide reforming comprising nickel as an active metal and washcoated on alumina as a metal foam support, wherein the support has a porosity of 80-97% and 10-110 pores per inch (PPI), the nickel is included in an amount of 0.01-10 wt % based on the support and the alumina is washcoated with an amount of 0.1-30 wt %, comprising:
supporting alumina on a metal foam and sintering; and
supporting a nickel precursor selected from the group consisting of nickel nitrate, nickel bromide, nickel chloride, nickel acetate and nickel iodide on the alumina-supported metal foam support by an impregnation method and sintering again.