# US 10,307,737 B2 · Transition metal-noble metal complex oxide catalyst for dehydrogenation prepared by one-pot synthesis and use thereof

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- Number: US 10,307,737 B2
- Document ID: US10307737B2
- Status: Granted
- Kind: B2
- Application number: 15/339,082
- Filed: 2016-10-31
- Published: 2017-05-04
- Granted: 2019-06-04
- Earliest claimed: 2015-11-03
- Assignees: SK Innovation Co., Ltd.; Korea Advanced Institute of Science and Technology
- Applicants: SK Innovation Co., Ltd.; Korea Advanced Institute of Science and Technology
- Inventors: Tae Jin Kim; Chang Q Lee; Young Eun Cheon; Ju Hwan Im; Min Kee Choi
- Web page: https://patentgrep.com/patent/US10307737B2

## CPC

- B01J 23/63: with rare earths or actinides
- B01J 21/04: Alumina
- B01J 23/002: {Mixed oxides other than spinels, e.g. perovskite}
- B01J 23/62: with gallium, indium, thallium, germanium, tin or lead
- B01J 23/96: of catalysts comprising metals, oxides or hydroxides of the noble metals
- B01J 37/0211: {using a colloidal suspension}
- B01J 37/036: {to form a gel or a cogel}
- B01J 37/04: Mixing {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 37/08: Heat treatment {(B01J37/0009, B01J37/0018 take precedence)}
- B01J 38/12: Treating with free oxygen-containing gas
- C07C 5/3337: {of the platinum group}
- C07C 5/48: with oxygen as an acceptor
- B01J 2235/00: Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
- B01J 2235/30: Scanning electron microscopy; Transmission electron microscopy
- B01J 2523/00: Constitutive chemical elements of heterogeneous catalysts
- C07C 2521/04: Alumina
- C07C 2523/08: of gallium, indium or thallium
- C07C 2523/42: Platinum
- C07C 2523/62: with gallium, indium, thallium, germanium, tin or lead
- C07C 2523/63: with rare earths or actinides
- Y02P 20/52: using catalysts, e.g. selective catalysts
- Y02P 20/584: Recycling of catalysts
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Disclosed are a complex oxide catalyst for dehydrogenation, a method of preparing the same, and use thereof, wherein the catalyst includes a first transition metal selected from the group consisting of gallium, vanadium, chromium, manganese, molybdenum, and zinc, a hydrogen-activating metal including at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table, and alumina, the amount of the first transition metal being 0.1 wt % to 20 wt %, the amount of the hydrogen-activating metal being 0.01 wt % to 2 wt %, based on the amount of the alumina, the first transition metal being loaded on the alumina, and the hydrogen-activating metal being surrounded by the alumina.

## Claims

### Claim 1

A method of preparing a complex oxide catalyst for dehydrogenation, comprising:
providing a precursor of a first transition metal selected from the group consisting of gallium, vanadium, chromium, manganese, molybdenum, and zinc;
providing a precursor of a hydrogen-activating metal comprising at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table;
providing an alumina precursor;
mixing the precursor of the first transition metal, the precursor of the hydrogen-activating metal and the alumina precursor in one pot to obtain a mixture; and
synthesizing a catalyst from the mixture in one pot using a sol-gel process, wherein the precursor of the first transition metal, the precursor of the hydrogen-activating metal and the alumina precursor are dissolved in a water, and stirred to hydrolyze the alumina precursor,
wherein the amount of the first transition metal is 0.1 wt % to 20 wt % and the amount of the hydrogen-activating metal is 0.01 wt % to 2 wt %, based on an amount of alumina in a final catalyst.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
providing a precursor of a second transition metal selected from the group consisting of cerium and zirconium; and
mixing the precursor of the second transition metal in the one pot,
wherein the amount of the second transition metal is 0.1 wt % to 20 wt % based on the amount of the alumina in the final catalyst.

### Claim 3 (depends on 2)

The method of claim 2, further comprising impregnating a hydrogen-activating metal comprising at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table, after synthesizing the catalyst using the sol-gel process, wherein an amount of the hydrogen-activating metal is 0.01 wt % to 2 wt % based on the amount of the alumina in the final catalyst.

### Claim 4 (depends on 2)

The method of claim 2, further comprising impregnating a second transition metal selected from the group consisting of cerium and zirconium, wherein an amount of the second transition metal is 0.1 wt % to 20 wt % based on the amount of the alumina in the final catalyst.

### Claim 5 (depends on 2)

The method of claim 2, further comprising drying and thermally treating the catalyst, after synthesizing the catalyst using the sol-gel process.

### Claim 6 (depends on 5)

The method of claim 5, wherein the drying is performed at a temperature of 50 to 200° C., and the thermally treating is performed at a temperature of 350 to 1000° C.

### Claim 7 (depends on 1)

The method of claim 1, further comprising impregnating a second transition metal selected from the group consisting of cerium and zirconium, wherein an amount of the second transition metal is 0.1 wt % to 20 wt % based on the amount of the alumina in the final catalyst.

### Claim 8 (depends on 1)

The method of claim 1, further comprising drying and thermally treating the catalyst, after synthesizing the catalyst using the sol-gel process.

### Claim 9 (depends on 8)

The method of claim 8, wherein the drying is performed at a temperature of 50 to 200° C., and the thermally treating is performed at a temperature of 350 to 1000° C.

### Claim 10 (depends on 1)

The method of claim 1, wherein the hydrogen-activating metal comprises at least one selected from the group consisting of Co, Ni, Cu, Ru, Rh, Pd, Ag, Ir, Pt and Au.

### Claim 11 (depends on 1)

The method of claim 1, further comprising impregnating a hydrogen-activating metal comprising at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table, after synthesizing the catalyst using the sol-gel process, wherein an amount of the hydrogen-activating metal is 0.01 wt% to 2 wt% based on the amount of the alumina in the final catalyst.