Metal oxide catalyst, method of preparing the catalyst, and method of alcohol using the same

Patent metadata

Field	Value
Publication number	US-2018280940-A1
Application number	US-201815937033-A
Country	US
Kind code	A1
Filing date	Mar 27, 2018
Priority date	Mar 28, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A metal oxide catalyst involved in a hydrogenation reaction in which a ketone is converted into an alcohol, a method of preparing the metal oxide catalyst, and a method of preparing an alcohol using the same are provided. The metal oxide catalyst has a spinel structure represented by the following Formula 1:
XAl 2 O 4 ,   <Formula 1>

wherein X represents nickel or copper.

First claim

What is claimed is:

1 . A metal oxide catalyst involved in a hydrogenation reaction in which a ketone is converted into an alcohol, wherein the metal oxide catalyst has a spinel structure represented by the following Formula 1:
XAl 2 O 4 ,   <Formula 1>
wherein X represents nickel or copper.

2 . The metal oxide catalyst of claim 1 , wherein a content of the nickel in the metal oxide catalyst is in a range of 20 to 65% by weight.

3 . The metal oxide catalyst of claim 1 , wherein a content of the copper in the metal oxide catalyst is in a range of 20 to 65% by weight.

4 . The metal oxide catalyst of claim 1 , wherein the metal oxide catalyst has an average particle size of 100 to 1,000 nm.

5 . A method of preparing a metal oxide catalyst, comprising:
(a) dissolving a nickel or copper precursor and an aluminum precursor in a polar solvent to prepare a precursor solution; (b) pyrolyzing the precursor solution while spraying the precursor solution into a reactor using a carrier gas so as to form a catalyst powder; and (c) transferring the catalyst powder to a storage tank, followed by calcining the catalyst powder in the storage tank to increase a surface area of the catalyst powder.

6 . The method of claim 5 , wherein the polar solvent in step (a) is distilled water.

7 . The method of claim 5 , wherein the pyrolysis in step (b) is carried out at a temperature of 600 to 850° C.

8 . The method of claim 5 , wherein the calcination in step (c) is carried out at a temperature of 350 to 450° C.

9 . A method of preparing an alcohol, comprising:
allowing hydrogen to react with a ketone in the presence of the metal oxide catalyst defined in claim 1 to convert the ketone into an alcohol.

10 . The method of claim 9 , wherein the ketone is methyl isobutyl ketone.

11 . The method of claim 10 , wherein the alcohol is methyl isobutyl carbinol.

12 . The method of claim 9 , wherein the reaction is carried out at a temperature of 70 to 150° C.

13 . The method of claim 9 , wherein the reaction is carried out at a pressure of 0.0 to 3.0 barg.

14 . The method of claim 9 , wherein the reaction is carried out at a liquid hourly space velocity of 0.1 to 1.7 hr −1 .

15 . The method of claim 9 , wherein the ketone and the hydrogen are allowed to react at a molar ratio of 1:4 to 8.

Assignees

• Korea Kumho Petrochemical Co Ltd

Inventors

• Park Ji Won
• Yun Yong Hee
• Row Kyoung Ho

Classifications

• B01J37/349

  making use of flames, plasmas or lasers · CPC title

• B01J37/082

  Decomposition and pyrolysis · CPC title

• C01G3/00

  Compounds of copper · CPC title

• B01J23/72

  Copper · CPC title

• B01J37/0072

  Preparation of particles, e.g. dispersion of droplets in an oil bath · CPC title